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HomeMy WebLinkAboutFlood Control & Water Conservation Advisory Board 1961IVetropo/ttali 70t0 and Ieeion amervation Juthority MINUTES c -1 Flood & Pollution Control Advisory Board March 16th, 1961 No. 1 The Flood and Pollution Control Advisory Bcard met in the Committee Room of the Stouffville Municipal Building, on Thursday, March 16, 1961, commencing at 7:00 p.m. PRESENT WERE: Chairman R. G. Henderson Vice- Chairman W. J. Haggart Members R. E. Jones F. J. McKechnie A. E. Reeve J. S. Scott C. A. Tonks Authority Chairman Dr. G. Ross Lord Secretary- Treasurer F. L. Lunn Director of Operations K. G. Higgs Assistant Director of Operations E. F. Sutter Crysler, Davis & Jorgensen R. Crysler R. K. Kilborn & Assoc. W. Scott Also present for the presentation of the Stouffville report were the Reeve and Members of the Stouffville Council. MINUTES: The Minutes of Meeting No. 2/60 were presented. Res. #1 Moved By :- F. McKechnie Seconded By :- J. S. Scott Resolved That : - the Minutes of Meeting No. 2/60 as presented be adopted. Carried Unanimously. REPORT ON FLOOD PROTECTION -- VILLAGE OF STOUFFVILLE: At the request of the Chairman, a representative of R. K. Kilborn and Associates reviewed in detail the Report on Flood Protection for the Village of Stouffville, which has been carried out during the past few months. Res. #2 Moved By :- A. E. Reeve Seconded By :- W. J. Haggart Resolved That : - the Report on Flood Protection for the Village of Stouffville prepared by R. K. Kilborn and Associates be presented to the Council of the Village of Stouffville for their consideration. Carried Unanimously. A Staff Report concerning the Report on Flood Protection of the Village of Stouffville was presented and discussed in detail with representatives of the Village of Stouffville. C -2 - 2 Res. #3 Moved By: F. McKechnie Seconded By:- R. E. Jones Resolved That:- the Staff Report concerning the Report on Flood Protection for the Village of Stouffville prepared by R. K. Kilborn & Associates be received; and The Board Recommends That:- the recommendations contained therein, and set forth herein be adopted: (1) that the report of R. K. Kilborn & Associates be adopted in principle and that copies of the report be made available to the Corporation of the Village of Stouffville and the Metropolitan Toronto Planning Board; (2) Scheme II as outlined in the report be adopted; (3) if the Authority is requested to undertake any part of the works contained in the report as a Scheme that the Authority include in the Scheme only those works recommended for the Main Branch of the Duffin Creek within the bounds of the proposed annexation area and the east tributary to College Street, and that all other works recommended in the report be considered as a local storm drainage problem and the responsibility of the Village of Stouffville; (4) in order to eliminate one structure on the proposed channelization the Village of Stouffville consider the closing of Summerville Street; (5) the Village of Stouffville consider passing a by -law prohibiting the development of flood plain lands within the boundaries of the Village of Stouffville as proposed in the annexation plan and as indicated on Plate II of the report of R. K. Kilborn & Associates dated February 23rd, 1961; (6) the Village of Stouffville make immediate representation to the Ontario Department of High- ways to determine if the Department would consider the re- building of the culvert located on Highway 47 (Main Street) to the specifications as outlined in the Kilborn report and in conjunction with the present program of Highway improvements being undertaken by the Department; (7) in view of the fact that the Authority has obtained contour plans for a large section of the Village, that the Village consider the completion of this work to give it complete mapping coverage of the entire Village area, including the area proposed for annexation; Carried Unanimously. FLOOD CONTROL STUDY -- WEST BRANCH DUFFIN?S CREEK: Mr. Higgs presented a Flood Control Study of the West Branch of Duffin Creek which had been carried out at the request of the R.D.H.P. Advisory Board. Res. #4 Moved By:- W. J. Haggart Seconded By:- F. McKechnie Resolved That:- the Staff Flood Control Study of - 3 - the ?West Branch of Duffin Creek be received; and The Board Recommends That:- the recommendations contained therein and set forth herein be adopted: (1) the Authority proceed with the construction of the Green River dam and reservoir and the acquisition of flood plain lands on the West Branch of the Duffin Creek, as proposed in the Plan for Flood Control and Water Conservation, when funds are riade available for these works; (2) the Corporation of the Township of Pickering be requested to pass a by -law prohibiting the constructio= of buildings on lands subject to flooding and indicated on the flood line maps prepared by the Authority; (3) the Whitevale and Altona reservoir sites be acquired when funds are made available; (4) the Conservation Areas Advisory Board be re- quested to investigate the proposed Whitevale -Dixie Conservation Area for possible acquisition when funds are made available; (5) the Technical Staff of the Authority advise land- owners throughout the length of the West Branch of the Duffin Creek on methods for the control of stream bank erosion; and further that if the Conserv- ation Authority acquires flood plain and conservation lands in the West Branch of the Duffin Creek that a stream bank erosion control programme be under- taken in accordance with present Authority policy. Carried Unanimously. SCHEME W.C. -9 -- FLOOD LINE MAPS -- DISTRIBUTION: A Staff communication was presented advising that the Authority has now accepted delivery of Flood Line Maps for all the drainage basins within the Region except the Humber River, for which maps were prepared by the Department of Commerce and Development following Hurricane Hazel. The matter of distribution was discussed in some detail. Res. #5 Moved By :- F. McKechnie Seconded By :- A. E. Reeve Resolved That:- the Staff Report on distribution of Flood Line Maps - Scheme W.C. -9 be received; and The Board Recommends that:- the recommendations contained therein and set forth herein be adopted: (1) the policy for the issuing of Flood Line Maps on the °ollowing basis be confirmed: (a) the resale price of Flood Line Maps to private individuals be (per sheet) $25.00; (b) each Municipality be provided with one set of prints for their respective area at no charge to the Municipalities; (c) any further prints required by the Municipalities be provided at a resale price of (per print) $5.00. (2). the Flood Line Maps now be made available to C -4 - 4 - all Municipalities within the Authority region; (3) a Staff Report be prepared outlining the Authority's policy with respect to Flood Plain and Conservation lands; (4) the Executive appoint a Sub - Committee to present the Maps and the Report to all Councils and Planning Boards of all Municipalities within the Region and further that this Sub - Committee be paid per diem and mileage. Carried Unanimously. REPORT ON EROSION PROTECTION -- LOWER HIGHLAND CREEK: Mr. Crysler of Crysler, Davis and Jorgensen, presented the engineering report on Erosion Protection for the Lower Highland Creek. The report was considered in detail. The Staff presented a communication dealing with the subject and con- taining certain recommendations. Res. #6 Moved By:- C. A. Tonks Seconded By:- Dr. G. Ross Lord Resolved That:- the report of Crysler, Davis • and Jorgensen be received, together with the Staff communication on Erosion Protection for the Lower Highland Creek, and further; The Board Recommends That:- the recommendations contained in the Staff communication as set forth herein be adopted: (1) the report of Crysler, Davis and Jorgensen Limited be adopted in principle; (2) the works described in the report be under- taken as a part of Water Control Scheme W.C. -34 and that work commence in the Fall of 1961 as a Winter Works Project; (3) in undertaking these works, consideration be given to the following modifications of the plan: (a) as suggested by Mr. J. W. Murray, that the weir structure be replaced by two gabion weirs with drops of approximately 101' and that the steel sheet piling be deleted; (b) as suggested by Mr. T. W. Thompson, that the alignment of the northernmost portion of the channel be located further to the West to provide space for a roadway to connect the Lower Highland Creek Park with the /alley lands to the North of Highway No 2; (c) the road - crossing structure referred to in the report be added to the works to be undertaken. Carried Unanimously. FLOOD CONTROL -- MIMICO CREEK: A Resolution by the Township of Toronto requesting that the Authority determine the costs involved to have a study made of the Channelization and Flood Control Measures on the Mimico Creek within the Township of Toronto was presented. The matter was discussed in some detail. C -5 - 5 - Res. #7 Moved By :- F. McKechnie Seconded By:- W. J. Haggart Resolved that:- the Resolution of the Township of Toronto regarding Flood Control in the Mimico Creek be received; and The Board Recommends That : - the Staff be authorized to obtain a proposal from H. G. Acres and Company Limited, Consulting Engineers, for a Preliminary Engineering Study of the Flood Control Measures of the Mimico Creek. Carried Unanimously. ADJOURNMENT: On Motion, the Meeting adjourned at 10 :00 p.m. R. G. Henderson F. L. Lunn Chairman Secretary - Treasure March 21, 1961 C -6 REPORT NO. 1 of the FLOOD AND POLLUTION CONTROL ADVISORY BOARD (being recommendations to the Executive Committee) 1. Report on Flood Protection -- Village of Stouffville: (a) the report of R. K. Kilborn & Associates be adopted in principle and that copies of the report be made available to the Corporation of the Village of Stouffville and the Metropolitan Toronto Planning Board; (b): Scheee II as outlined in the report be adopted; (c) . if the Authority is requested to undertake any part of the works contained in the report as a Scheme that the Authority include in the Scheme only those works recommended for the Main Branch of the,Duffin Creek within the bounds of the proposed annexation area and the east tributary to College Street, and that all other works recommended in the report be considered as a local storm drainage problem and the responsibility of the Village of Stouffvill: (d) in order to eliminate one structure on the proposed channeliz- atlon the Village of Stouffville consider the closing of Summervill= Street; (e), the Village of Stouffville consider passing a by -law prohibit - ing;the development of flood plain lands within the boundaries of the Village of Stouffville as proposed in the annexation plan and as indicated on Plate II of the report of R. K. Kilborn & Associates dated February 23rd, 1961; (f) the Village of Stouffville make immediate representation to the-Ontario Department of Highways to determine if the Department would consider the re- building of the culvert located on Highway 47 (Main Street) to the specifications as outlined in the Kilborn report and in conjunction with the present program of Highway improvements being undertaken by the Department; • (g); in view of the fact that the Authority has obtained contour plansfor a large section of the Village, that the Village consider the;completion of this work to give it complete mapping coverage of the entire Village area, including the area proposed for annexation. 2. Flood Control Study -- West Branch Duffin's Creek: (a) the Authority proceed with the construction of the Green Riyer dam and reservoir and the acquisition of flood plain lands on the West Branch of the Duffin Creek, as proposed in the Plan for Flood Control and Water Conservation, when funds are made available for these works; (b): the Corporation of the Township of Pickering be requested to pass a by -law prohibiting the construction of buildings on lands subject to flooding and indicated on the flood line maps prepared by the Authority; (c) the Whitevale and Altona reservoir sites be acquired when funds are made available; (d) the Conservation Areas Advisory Board be requested to investi- gate the proposed Whitevale -Dixie Conservation Area for possible acquisition when funds are made available; (e) the Technical Staff of the Authority advise landowners through- out the length of the West Branch of the Duffin Creek on methods for the control of otream bank erosion; and further that if the C7 Conservation Authority acquires flood plain and conservation lands in the West Branch of the Duffin Creek that a stream bank erosion control programme be undertaken in accordance with the present Authority policy. 3. Scheme W.C. -9 -- Flood Line Maps -- Distribution: (a) the policy for the issuing of Flood Line laps on the followin- basis be confirmed: (1) the re.-ale price of Flood Line Maps to private individuals be (per sheet) $25.00; (ii) each Municipality be provided with one set of prints for their respective area at no charge to the Municipalities; :(iii) any further prints required by the Municipalities be provided at a resale price of (per print) $5.00; (b) the Flood Line Maps now be made available to all Municipalitic within the Authority Region; (c) a Staff Report be prepared outlining the Authority2s policy with respect to Flood Plain and Conservation lands. (d) the Executive appoint a Sub - Committee to present the Maps and the Report to all Councils and Planniag Boards in all Municipalitic within the Region, and further that this Sub - Committee be paid per diem and mileage. 4. Report on Erosion Protection -- Lower Highland Creek: (a) the report of Crysler, Davis and Jorgensen Limited be adopted in. principle; (b) the works described in the report be undertaken as a part of Water Control Scheme W.C. -34, and that work commence in the.Fall of.'1961 as a Winter Works Project; (c)' in undertaking these works, consideration be given to the following modifications of the plan: (i) as suggested by Mr. J. W. Murray, that the weir structure be replaced by two gabion weirs with drops of approximately 10" and that the steel sheet piling be deleted; (ii) as suggested by Mr. T. W. Thompson, that the alignment of the norther•'most portion of the channel be located further to the West to provide space for a roadway to connect the Lower Highland Creek ±ark with the valley lands to the north of Highway No. 2; (iii) that the crossing structure referred to in the report be added to the works to be undertaken.• 5. Flood Control -- Mimico Creek: (a) the Staff be authorized to obtain a proposal from H. G. Acres ant Company Limited, Consulting Engineers, for a Preliminary Engineering Study of the Flood Control Measures of the Mimico Creek. Vetropoltcui Joros2¢o aid Ieeion CorkierL/ation 4u.tI,1orit � MINUTES c -8 Flood & Pollution Control Advisory Board Thurs. May 4. 1961 No. 2 The Flood and Pollution Control /dvisory Board met in the Board Room, 17 Mill Street, on Thursday, May 4th, 1961, commencing at 2:00 p.m. PRESENT WERE: Chairman Vice - Chairman Members Authority Chairman Secretary- Treasurer Asst. Director of Operations Property Co- Ordinator R. G. Henderson W. J. Haggart R. E. Jones F. McKechnie A. MacDonald A. E. Reeve J. S. Scott C. A. Tonks V. Vignale K. G. Waters Dr. G. Ross Lord F. L. Lunn E. F. Sutter W. E. Jones MINUTES: The Minutes of Meeting No. 1/61 were presented. Res. ;1/$ Moved By:- R. E. Jones Seconded By:- W. J. Haggart Resolved That:- the Minutes of Meeting No. 1/61 as presented, be adopted. Carried Unanimously. STAFF PROGRESS REPORT: Mr. Sutter presented the Staff Progress Report including an outline of the Project Planning for 1961. Res. Y9 Moved By:- C. A. Tonks Seconded By:- K. G. Waters Resolved That:- this Board concur with the action of the Executive Committe°in regard to Project Planning for 1961. Carried Unanimously. RICHMOND HILL FLOOD PROBLEM: The Chairman drew to the attention of the Board certain problems on the upper reaches of the Rouge River on the Eastern part of Richmond Hill where a flood problem is evident. Res. #10 Moved By:- W. J. Haggart Seconded By:- C. A. Tonks The Board Recommends That:- the Staff be directed to carry out a study of the flooding problem on the Rouge River in the Richmond Hill Area. Carried Unanimously. C -9 - 2 - FLOOD PLAIN AND CONSERVATION LANDS POLICY: The Staff presented a draft statement of Policy of Flood Plain and Conservation Lands. Res. #11 Moved By :- R. E. Jones Seconded By:- F. McKechnie Re :solved That:- th: Statement of Policy of Flood Plain and Conservation Lands be received and appended as Schedule til" of these Minutes; and further The Board Recommends that:- the Statement of Flood Plain and Conservation Lands as appended herewith be adopted. Carried Unanimously. RECOMMIENDATIONS OF THE R.D.H.P. ADVISORY BOARD: The Staff presented certain recommendations of the R.D.H.P. Advisory Board referred to the Board by the Executive Committee. Res. #12 Moved By :- A. E. Reeve Seconded By :- J. S. Scott The Board recommends that : - the recommendations of the R.D.H.P. Advisory Board with regard to the acquisition of Flood Plain lands in the Lower Duffin Creek and the Rouge River and the Milne Dam site be included as top - priority items in the proposed Flood Plain Acquisition Policy of the Authority. Carried Unanimously. STUDY OF FLOOD PLAIN LANDS: A Staff communication was presented outlining the action felt necessary for the preparation of a comprehensive programme of proposed land acquisition, including all the down - stream sections of all the major water courses, together with small dam sites in the Region. Res. #13 Mo v ea By:- F. McKechnie Seconded By :- A. MacDonald The Board Recommends That : - the proposed study of Flood Plain and Conservation Lands be carried out by the Staff during the Summer of 1961; and further that the necessary maps at a scale of 119 to 10009 be obtained from Hunting Survey Corporation at a cost not to exceed $1,$00.00. Carried Unanimously. On Motion, the Meeting adjourned at 4 :45 p.m. R. G. Henderson F. L. Lunn Chairman Secty. Treasurer May C, 1961 C -10 REPORT NO. 2 of the FLOOD & POLLUTION CONTROL ADVISORY BOARD (being recommendations to the Executive Committee) 1. The Staff. be directed to carry out a study of the flooding problem. on the Rouge River in the Richmond Hill Area. 2. The Statement of Flood Plain and Conservation Lands as appended as Schedule "A,v of the Flood & Pollution Control Advisory Board Meeting No. 2/61 be adopted. 3. The recommendations of the R.D.H.P. Advisory Board with regard to the acquisition of Flood Plain Lands in the Lower Duffin Creek and the Rouge River and the Milne Dam site be included as top - priority items in the proposed Flood Plain Acquisition Policy of the Authority. 4. The proposed study of Flood Plain and Conservation Lands be carried out by the Staff during the Summer of 1961; and further that the necessary maps at a scale of 1" to 10004 be obtained from Hunting Survey Corporation at a cost not to exceed $1,$00.00. SCHEDULE Q "Ati? FLOOD PLAIN AND CONSERVATION LANDS A STATEMENT OF POLICY METROPOLITAN TORONTO AND REGION CONSERVATION AUTHORITY May, 1961 C -11 C -12 CONTENTS 1. INTRODUCTION Page 1 2. DEFINITIONS Page 1 (a) FLOOD PLAIN LANDS Page 1 (b) FLOODWAY Page 1 (c) DESIGN FLOOD Page 1 (d) CONSERVATION LANDS Page 1 3. FLOOD PLAIN AND CONSERVATION LANDS -- A STATEMENT OF POLICY Page 1 4. FLOOD LINE MAPS Page 2 5. ZONING AND REGULATION Page 3 6. ACQUISITION OF FLOOD PLAIN AND CONSERVATION LANDS Page 4 7. RECREATION AND ANCILLARY MEASURE Page 5 $. MAINTENANCE OF WATERCOURSES Page 5 9. APPENDICES Page 6 (A) PERMISSIVE LEGISLATION Page 6 (B) TOWNSHIP OF ETOBICOKE FLOOD PLAIN BY -LAWS Page 6 (C) AUTHORITY REGULATIONS RE FILLING OF FLOOD PLAINSPage 7 (D) MUNICIPALITY OF METROPOLITAN TORONTO MAINTENANCE OF WATERCOURSES Page 9 (E) AGREEMENT WITH THE MUNICIPALITY OF METROPOLITAN TORONTO REGARDING THE USE AND DEVELOPMENT OF FLOOD PLAIN AND CONSERVATION LANDS FOR CONSERVATION PURPOSES Page 10 C -•13 1. INTRODUCTION: The Metropolitan Toronto and Region Conservation Authority is a corporate body established February, 1957, under The Conservation Authorities Act, R.S.O. 1960, Chapter 62. The Authority is responsible for carrying out a comprehensive programme to conserve the natural resources of the area under its jurisdiction. The area embraced by the Authority is 1,000 square miles in and adjacent to Metropolitan Toronto, and includes the drainage basins of the Etobicoke and Mimico Creeks, Humber, Don and Rouge Rivers, Highland, Petticoat, Duffin and Carruthers Creeks. One of the most important projects undertaken by the Authority is the acquisition and development of flood plain and conservation lands in the major valley systems of the region. Appendix "Ao briefly outlines the basic statutes that govern the program of the Authority. Within the framework of the permissive legislation the Authority has adopted policies to direct its activities. The purpose of this statement is to define flood plain and conservation lands and to set forth the policies of the Authority with respect to these lands. The statement should be of value to municipal councils, planning boards and officials concerned with the preparation and ad- ministration of official plans, restricted area by -laws and subdivision control by -laws. 2. DEFINITIONS: (a) FLOOD PLAIN LANDS -- The flood plain means the area adjoining the river or stream which has been or may be hereafter covered by flood water. (b) FLOODWAY -- Floodway means the channel of a river or stream' and those portions of the flood plains and adjoining channels which are reasonably required to carry and discharge the flood water or flood flow of any river or stream. (c) DESIGN FLOOD -- The design flood is a flood of the magnitude which would result from a storm of the intensity of Hurricane Hazel, October 14, 15, 1954, as centred over the Humber Water- shed, the maximum observed storm for the Province of Ontario. (d) CONSERVATION LANDS -- Conservation Lands as applied to the lower sections of the main valley systems means all lands included in the main valley systems from one crest of the valley to the opposite crest and which contain within them steep valley slopes, low lying marshy areas, flood plain lands, floodways and river beds. Flood Plain lands are a natural feature of all river valleys in the area under the jurisdiction of the Authority. Natural processes of erosion and deposition have created these flood plains and exert forces which subject flood plains to continuous change. The main valley systems within which conservation lands are contained are one of the greatest natural assets in the greater Toronto region. Erosion, valley slump, dumping encroachments by buildings and private development have caused irreparable damage to conservation lands. It is the aim of the Metropolitan Toronto and Region Conservation Authority to control conservation lands to preserve the aesthetic qualities and the natural amenities of the main valley systems that remain in their original state and to restore those sections where damage has not progressed to the point where restoration is no longer practical. 3. FLOOD PLAIN AND CONSERVATION LANDS - A STATEMENT OF POLICY: The following is a summary of the policy of the Metropolitan Toronto and Region Conservation Authority as adopted September 2, 1959, and C -14 - 2 - contained in full detail in the Plan for Flood Control and Water Conservation. There are three basic approaches to flood control and water conservation! (a) Construction of flood control and water conservation dams and reservoirs; (b) Construction of channel improvements and diversions; (c) Control of the use of lands in flood areas; The rapid growth of the Metropolitan Toronto region has resulted in the encroachment of urban development on flood vulnerable lands. The cost of occupancy of flood plain lands in terms of flood damages and loss of life was demonstrated by flood Hazel, October, 1954, to be too high to justify the use of flood plains for most purposes. However, the location of roadways, railways, bridges, sewers and other public utilities on flood plain lands is in many cases justifiable and unavoid- able. The use of flood plain exclusively for low risk, safely designed and protected public structures, or for farming and public parks does not create serious flood damage problems. The construction of protective works to permit development of flood plain lands is neither economically possible nor desirable. It is the Flood control policy of Metropolitan Toronto and Region Conservation Authority to pursue a comprehensive programme of flood control measures consisting of a combin- ation of (1) the construction of protective multi- purpose dams and reservoirs and protective channel improvements; and (2) the acquisition of flood plain land at equitable prices wherever feasible, and the zoning and regulation of flood plain lands where acquisition is not feasible or desirable. Further, it is the policy of the Authority to pursue a comprehensive programme of ancillary conservation measures and a programme of development of recreation and park lands in such a way as to maximize and perpetuate the benefits bestowed by nature.° 4. FLOOD LINE MAPS: The Ontario Department of Commerce and Development established high water marks following the flood of October 15, 1954, on all of the major rivers under the jurisdiction of the Authority. The Department purchased flood line maps from the Photographic Survey Corporation in 1954 of the Humber River. The Metropolitan Toronto and Region Conservation Authority has extended the map coverage to include all of the river basins within the region under the jurisdiction of the Authority. In addition, the Authority has engaged consulting hydraulic engineers to determine the magnitude of floods of the intensity of Hurricane Hazel as centred over the Humber watershed. The flood lines of these greater floods are also indicated on the flood line maps and are designated the stages for the design flood. The flood line maps are at a scale of 200 feet to the inch with a 5 foot contour interval, 2i foot interpolation. The actual high water marks of Hurricane Hazel, as established by the Ontario Department of Commerce and Development following Hurricaru?Iiazel, are indicated -on the plans. In addition, the high water marks for the design floods are indicated. The plans include not only the flood plain but in addition, cover the entire valley system together with adjacent table lands. Following is the policy of the Authority for the distribution of these maps: Private Individuals $25.00 per sheet C -15 - 3 - 1 complete Set to be provided to every municipality within the region at no cost. Additional prints for municipalities $5.00 per print The flood line maps must be ordered through the Authority. The maps form the basis for the flood plain and conservation land studies under - ;aken by the Authority. 5. ZONING AND REGULATION: Wise flood plain management involves the best use of the lands and resources as an integral part of the development of the region. Multi- purpose dams and reservoirs, other flood protective measures and regulated use of areas marginal to the streams and reservoirs must all be considered. The adjustment and control of land use to provide for the needs of the river valleys to carry flood waters are important parts of the flood control and water conservation policy of the Metropolitan Toronto and Region Conservation Authority. The power to regulate the use of flood plain lands is given to municipalities under Section 30 of the Planning Act. Section 30 (a) - For prohibiting the erection of a building or structure for residential or commercial purposes on land which is subject to flooding or on land where, by reason of its rocky, low lying, marshy or unstable character, the cost of construction of said waterworks, sewerage or drain- age facilities is prohibitive. The Conservation Authority is requesting all municipalities within the region under the jurisdiction of the Authority to pass by -laws designat- ing floodways, i.e. all lands subject to flooding by the design flood r?a flood equal to the intensity of Hurricane Hazel centred over the Humber watershed,.;. The flood line maps provided by the Authority will form the basis for the designation of the floodways. The co- operation of the municipalities is required for the Authority to be able to achieve its flood control and water conservation objectives. The main valley systems throughout Metropolitan Toronto and in some instances extending into adjacent municipalities have land use restrict- ions placed on them, either by the use of official plans or restricted area by -laws (zoning by -law). There is a multiplicity of definitions covering these land use zones. They include greenbelt, open spaces with a variety of definitions such as public open space, private open space and semi - public open space. In other instances, they have been termed conservation lands. The permitted uses within these zones vary from municipality to municipality. The policies of the various . municipalities for the amendment of the greenbelt and open space _. boundaries also vary considerably. Some municipalities are permitting encroachments on the valley slopes, both by buildings and by lots. In many instances, steep valley slopes are used as coverage for apart- ment developments. The effects of these encroachments on valley slopes is well illustrated throughout the Metropolitan region. Many developers constantly dump fill over these slopes and leave them in a condition: that destroys the natural vegc.ation and the natural amenities of the, valleys. Other municipalities are refusing to permit development of valley slopes and all efforts are taken to prevent encroachment. The Metropolitan Toronto and Region Conservation Authority is of the opinion that the following designations should be applied to the main river valleys under the jurisdiction of the Authority:. (1) Floodways -- Those lands subject to flooding by the design flood. (2) Public Open Space -- Those lands contained within the main valley systems from crest of slope to crest of slope that are scheduled for acquisition by the Authority as flood plain (3) C -16 -4- and conservation lands or by the municipality. Greenbelt or Private Open Space -- Those lands contained with- in the main valleys under the jurisdiction of the Authority from crest of slope to crest of slope, but not presently scheduled for acquisition by the Authority or the municipalit- ies. The floodway designation will be included within the greenbelt designat- ion in order to have absolute control over land use in the floodways. A sample by -law which designates floodways in the Township of Etobicoke is appended to this report for reference. 6. ACQUISITION OF FLOOD PLAIN AND CONSERVI'ION LANDS: The policy of the Metropolitan Toronto and Region Conservation Authority is to acquire the flood plain and conservation lands in the downstream sections of the main valley systems under the jurisdiction of the Authority. The Authority is of the opinion that for adequate control of these lands for flood control and conservation purposes, it is essent- ial that they be owned by a public agency such as the Authority. The ownership of these lands therefore ensures their proper use in order that the objectives of the Authority can be achieved. The flood plain and conservation lands in public ownership can be used for other than flood control and conservation purposes for they provide an opportunity for the provision of public open spaces and recreation facilities that are an essential feature of every urban development. The Authority has acquired major acreages of flood plain and conservation lands in the main valleys within Metropolitan Toronto and proposes the extension of this plan to cover the lower reaches of all the major watercourses under the jurisdiction of the Authority. These lands are acquired under what are known as Water Control Schemes. The schemes set forth the lands to be acquired, the estimated cost of the acquisition, the purpose for which the lands are to be used, and the scheduling of acquisition. The majority of water control schemes adopted to date have been in the Municipality of Metropolitan Toronto, and this municipality has been designated as the benefitting municipality and required to pay 50% of the cost of the acquisition of flood plain lands. The Province of Ontario contributes the remaining 50% of the cost. The Authority proposes the acquisition of 7,600 acres of flood plain land in its Plan for Flood Control and Water Conservation. It is proposed to finance these lands on the following basis: Province of Ontario 50% Authority 50;% In addition to the acquisition of flood plain and conservation lands, the Authority is responsible for the undertaking of conservation measures required for the control of stream bank erosion and for the development of the watercourses for flood control purposes. Some water control schemes include these works as part of the scheme, whereas others are undertaken as additional schemes after the lands have been acquired and development for recreation purposes has been completed. In many instances, municipally owned lands are included in water control schemes. The policy of the Authority and the Province of Ontario is that where municipally owned lands are within a scheme they must be transferred to the Authority for a nominal sum. The Province of Ontario will not pay grants for municipally owned lands included in water control schemes. Most of the municipalities within Metropolitan Toronto and in several instances outside Metro have co- operated with the Authority in the transfer of these lands to the Authority. The Authority assumes all survey and legal costs involved in the transfer of municipally owned lands. C -17 - 5 - 7. RECREATION AND ANCILLARY CONSERVATION MEASURES: The acquisition of flood plain and conservation lands is of tremendous value for the elimination of the risk of future heavy flood damage and the probability of heavy loss of life and the provision of floodways and, in addition, provides ancillary benefits from the standpoint of recreation and conservation. The Authority proposes to utilize the acquired flood plain lands to the fullest possible extent for recreation purposes, maintaining a balance between forest tracts and recreation park lands. The flood plain lands lying within the limits of Metropol- itan Toronto are leased to the Municipality of Metropolitan Toronto for development, maintenance and administration by the Metropolitan Parks Department. The Authority maintains ownership of the lands and must approve all plans of development to ensure that the efficiency )of the valleys to function as a floodway is not jeopardized. Picnic facilities, play areas, nature study and wildlife areas will be included in the development of flood plain lands. The Authority proposes to reforest areas of flood plain and conservation lands where required. The full cost of the development of flood plain and conservation lands for parks and recreation purposes is borne by the municipality (Metro- politan Toronto, when located within Metro) in which these lands are situated. The Authority does not have funds for the development, maintenance and operation of these lands. $. MAINTENANCE OF WATERCOURSES: The Metropolitan Toronto and Region Conservation Authority does not have direct control over all of the drainage courses in the region under the jurisdiction of the Authority. Control of these watercourses is accomplished by the Authority through the acquisition of the adjacent lands. A large portion of the watercourses throughout the region are in private ownership and the Authority does not have any jurisdiction o over these watercourses. The Authority does not have power nor does it have funds to undertake channel improvement and erosion control measures on valley properties that are owned privately or by municipal- ities. However, the maintenance of watercourses is an important flood control measure within the Metropolitan region. The Municipality of Metropolitan Toronto has assumed some responsibility for the maintenance of the major river valleys within Metro and this is set forth in the minutes of the Metropolitan Council adopted on February 7, 1961, and included as Appendix D. The Authority does have jurisdiction, however, over the filling of flood plain lands and river beds. The Authority has enacted regulations under Section 20 (1) (d) of The Conservation Authorities Act. These regulations and procedure for the administration of the regulations are set forth as Appendix ;Tu to this report. C -1$ 9. APPE?DICES: - 6 APPENDIX "A" The following excerpts from The Conservation Authorities Act, R.S.O. 1960, Chapter 62, are the basic statutes that govern the work of the Authority: Sec. 15 - The objects of an authority are to undertake and effect such scheme or schemes in respect of the watershed cr•part thereof for which it is established as the authority determines; R.S.O. 1950, c. 62, s. 13. Sec. 1 - "Scheme" means a scheme undertaken by an authority for the purposes of conservation, restoration and development of natural resources, other than gas, oil, coal and minerals, and the control of water in order to prevent floods and pollution, or for any such purposes; R.S.O. 1960, c. 252. Sec.- 17 - For the purposes of carrying out a scheme, an authority has power, (h) to use lands that are owned or controlled by the authority for such purposes, not inconsistent with its objects, as it deems proper; (i) to acquire lands, with the approval of the Minister, and to use lands acquired in connect- ion with a scheme, for park or other recreational purposes, and to erect or permit to be erected, buildings, booths and facilities for such pur- poses and to make charges for admission thereto and the use thereof. APPENDIX "B. TOWNSHIP OF ETOBICOKE BY -LAW # A BY -LAW TO PROHIBIT THE ERECTION OF BUILDINGS AND STRUCTURES FOR RESIDENTIAL OR COMMERCIAL PURPOSES IN PART OF THE TOWNSHIP OF ETOBICOKE WHEREAS aerial photographs have been taken showing the high water line reached by the waters of the Humber River and its branches in October 1954, and from which photographs contour maps have been compiled showing such line as a dotted line thereon, copies of which maps are attached to and form part of this by -law; AND WHEREAS such high water line varies considerably in its location and it is deemed desirable to more :accurately difine the line of reference to contour lines for the purposes of this b;r -law; . AND WHEREAS it is deemed expedient to prohibit the erection of buildings and structures for residential or commercial purposes in that part of the Township of Etobicoke lying within the bed of the Humber River and its branches, and lying between the red lines markbd on the said maps and the normal bed of the Humber River and its branches by reason of the fact that such land is subject to flooding. NOW, THEREFORE, THE MUNCIPAL COUNCIL OF THE CORPORATION OF THE TOWNSHIP OF ETOBICOKE ENACTS as follows: - 1. No person shall erect any building or structure for residential or commercial purposes in that part of the Township of Etobicoke lying on the bed of the Humbr River and any of its branches, and between the red lines as designated on the maps attached hereto, and the normal bed C -19 - 7 - of the Humber River and its branches, provided, however, that this By -la- shall not operate to prohibit the erection of buildings and structures designated to be used in connection with the use of the said lands for parks or recreational purposes. 2. This By -law shall not apply to any building or structure which, on the day of passing of the By -law, is erected on the said lands, nor shall the By -law apply to any building or structure the plans for which have, prior to the day of the passing of. the By -law, been approved by the Building Commissioner so long as the building or structure, when erected, is used for the purpose for which it was erected. 3. Any person convicted of a breach of any of the provisions of this By -law shall forfeit and pay, in the discretion of the Convicting Magistrate, a penalty not exceeding the sum of Three Hundred Dollars ($300.00) exclusive of costs, for each offence, and every such penalty shall be recoverable under The Summary Conviction Act. 4. The provisions of Clause 3 shall be in addition to any other remedy which the Corporation of the Township of Etobicoke or a ratepayer thereof may have to restrain by action a contravention of this By -law. 5. Subject to the approval of The Ontario Municipal Board, this By -law shall come into force and take effect upon the date hereof. READ a first, second and third time and passed in Council this 5th day of November, A.D. 1956. APPENDIX "C W. B. LEWIS REEVE S. W. ECKERSLEY THE METROPOLITAN TORONTO AND REGION CONSERVATION AUTHORITY THE CONSERVATION AUTHORITIES ACT O. Reg. 91/60 Metropolitan Toronto and Region Dumping Fill Made -- 2nd March, 1960. Approved -- 25th March, 1960. Filed -- llth April, 1960. REGULATIONS MADE BY THE METROPOLITAN TORONTO AND REGION CONSERVATION AUTHORITY UNDER THE CONSERVATION AUTHORITIES ACT CLERK 1. In these regulations, (a) "Authority" means The Metropolitan Toronto and Region Conservation Authority; (b) "fill n means fill of any kind. 2. Subject to regulation 3, no person shall place or dump fill or per- mit fill to be placed or dumped in any area below the high water mark of any river, creek or stream in the area under the jurisdiction of the Authority. C -20 - $ - 3. Subject to The Ontario Water Rescurces Commission Act, 1957, or to any other private interest, the Authority may permit in writing the pia, ing or dumping of fill in an area below the high water mark, if, in the opinion of the Authority, the placing or dumping does not interfere with the ability of the river, creek or stream to safely carry the maximum flood flow and will not result in pollution of the river, cree'' or stream. 4. No dumping or placing of fill below the high water mark of the rive. creek or stream shall be commenced until the registered owner of the property has obtained the permission required by regulation 3. 5. Applications for permission to place or dump fill shall be filed with the Authority and shall include, (a) Two copies of a plan of the property on which the fill is to be placed, showing the proposed location of the filling, the depth to which it is proposed to fill and the proposed final grade of the land when filling is completed; (b) a complete description of the type of fill proposed to be placed or dumped; (c) a statement of the dates between which the placing or dumping will be carried out; and (d) a statement of the proposed use of the land following complet- ion of placing or dumping. 6. The Authority may, at any time, withdraw permission to place or dump fill if, in the opinion of the Authority, the representations contained in the application for permission to place or dump the fill are not carried out. ADMINI STRATION The Administration of the Regulations is set forth in Executive Res. No. 163 Executive Meeting No. 13, Aug. 10th, 1960, as follows: That the deport of the Regulations Sub - Committee be received and that the recommendations contained therein as amended and set forth herein be adopted: 1. The Director of Operations is hereby appointed as the officer to enforce the regulations of the Authority re- garding the dumping of fill. 2. The duties of the Officer shall be: (a) To enforce the Regulations; (b) To investigate complaints and to make observations on the filling of flood plain lands and take the necessary and proper action to abate nuisances therefrom; (c) To issue permits and notices under these regulations and to keep records of applications, plans, specifications, permits, violations, complaints and other matters on file for Authority purposes only; (d) To examine the plans and specifications for all areas where it is proposed to fill flood plain lands which meet the requirements of these regulations; (e) (f) To inspect areas where permits have been issued for the dumping of fill on flood plain lands; To enlist the co- operation of civic, technical and contractor groupp.s,in respect tc the control of dumping of fill on flood plain 1 -Inds, APPENDIX "Dte 9 C -21 MAINTENANCE OF WATERCOURSES: The Works Committee recommends the adoption of the appended report (December 6, 1960) received from the Commissioner of Works, viz; "Within the Metropolitan boundaries there are approximately 200 miles of river and stream channels; some large, such as the Humber and Don Rivers, and others small, similar to the Black and Wilket Creeks. These channels all serve as outlets for precipitation which falls on the Metropolitan Area in the form of rain and snow, and should be re- garded as a major municipal facility in much the same manner as the sanitary sewer system. "In order to promote their maximum usefulness, these watercourses shout be maintained free of obstruction. As a rejult of inadequate care, unsatisfactory conditions can arise, such as:- (a) Debris strewn along the river and, in many instances, log jams causing flooding to varying degrees. (b) Ice jams, which could cause serious flooding. (c) Eroded earth material, subsequently deposited in the ponding .areas behind dams, destroying the effectiveness of the purpose for which the dam was constructed. (d) Unsightly appearance of the river channels, caused by logs, branches, oil cans, and other items of junk. too numerous to mention. (e) Unnecessary silting, such as in the lower Don, which tends to accumulate in the Toronto Bay, requiring annual and expensive dredging. ,,By the institution of a modest annual cleaning programme along the channels of all the rivers and the shores adjacent thereto, the follow- ing benefits would accrue: 1. Reduction in local flooding conditions. 2. Reduction in silting in the bay. 3. A tidy appearance of the river channels, particularly adjacent to Conservation Authority and Metropolitan Parks areas. 4. Elimination of unsightly and unhealthy pollution pockets, which build up with the accumulation of twigs, logs and oil drums. "At many locations the Conservation Authority has completed flood control schemes, the maintenance of which is not normally financed by the Authority, but is left to the benefitting municipality. "Much of the shoreline of the water channels is owned privately, while extensive land adjacent to the waters is owned by the Metropolitan Parks Department and the Metropolitan Conservation Authority. The Metropolital Works Department also controls certain lands along the shoreline of thes= streams. bHaving regard for the foregoing, it is recommended for the consideration of your Committee: (1) that the Metropolitan Parks Department keep clear river channels and the shoreline for a distance of 20 feet from the river in locations where it owns the abutting land -- the Parks Maintenance appropriation assuming the charge for this work; (2) that the Metropolitan Department of Works maintains the remainder C -22 - 10 - of the river channels and adjacent shores for 20 feet back, to the extent possible in view of the fact that some of the land is privately owned. (This work could probably be done modestly with a crew of six men and one truck, together with the necessal- equipment, on an annual basis.) If this proposal is deemed acceptable, funds will be included in the Department of Works budget from this time forward; and (3) that the Department of Works and /or the Metropolitan Parks Department maintain any flood control structures which have been built by the Metropolitan Toronto and Region Conservation Authority. Funds for this will be looked upon as a Special Item each year. It should not be deemed the the Metropolitan Corporation is assuming direct responsibility for the rivers, because of privately -owned lands along the shorelines, but rather that the work is being carried.out solely in the interest of rendering the rivers capable of carrying maximum flow, presenting the best appearance, and elimination of pollution pockets." APPENDIX "E" MANAGEMENT Agreement with Municipality of Metropolitan Toronto MEMORANDUM OF AGREEMENT made this day of February, A.D. 195$ BETWEEN THE METROPOLITAN TORONTO & REGION CONSERVATION AUTHORITY, hereinafter called The Authority", OF THE FIRST PART, -and - THE MUNICIPALITY OF METROPOLITAN TORONTO hereinafter called Y4Metrote OF THE SECOND PART WHEREAS The Authority has propounded a scheme for the acquisition of flood -plain lands in the Lower Humber River; AND WHEREAS Metro has been designated as the benefitting municipal- ity and has approved the scheme of acquisition; AND WHEREAS Metro is desirous of administering park and recreational facilities in the Lower Humber; AND WHEREAS The Authority has obtained the approval in writing of the Minister of Commerce and Development of the Province of Ontario to the said scheme: AND WHEREAS The Authority is proceeding to acquire all the land necessary to carry out the scheme. NOW THEREFORE THIS AGREEMENT WITNESSETH that in consideration of the recitals herein and the carrying out of the various obligations contain- ed in this agreement, the parties hereto agree as follows: 1. The Authority shall obtain and register in its own name all the lands C -23 necessary for the due carrying out of the scheme for the acquisition and development of flood plain lands in the Lower Humber. 2. The Authority will, upon the request of Metro, permit Metro to devel- op and maintain for park and recreational purposes such lands as it shall deem to have a park potential. 3. Metro will develop and maintain these lands for public park purposes with the necessary administration and supervisory accommodation in connection therewith and for no other purpose except with the approval in writing of The Authority. 4e The cost of development and maintenance of these lands and the main- tenance of all other lands acquired by The Authority under the said scheme shall be borne by Metro and all plans for such development shall be submitted to The Authority for its approval in writing and unless and until such approval is obtained no work shall be started. 5. If fill is required by Metro for such development, then the consent to use of fill, the type of fill and the amount and method.of•using the fill shall be obtained from The Authority in writing. 6. No permanent buildings shall be erected on these lands by Metro without first obtaining the consent in writing of The Authority, both as to location and type of building. 7. Metro shall assume the full cost and responsibility for the mainten- ance of such park lands and other lands as set out in paragraph 4 above, provided, however, that if The Authority is of the opinion that Metro is not properly maintaining such lands, then The Authority may, on notice to Metro, enter upon the said lands for the purpose of main- taining them and any costs incurred by The Authority by reason of so doing shall be paid to The Authority by Metro forthwith upon the demand thereof. 8. The Authority shall retain control of all other lands acquired by it under the scheme, including all aspects of the river channels, flood control river protection, erosion control and dams and Metro shall not interfere with the carrying out of such works as are necessary for these projects. 9. Nbtro shall not alter the course of any river, brook, stream or watercourse without authority from The Authroity. 10. Metro shall not have the right to lease or otherwise dipsose of the .park lands herein, but may permit concessionaires thereon with the approval of The Authority, the said approval to be given in writing. 11. Metro shall pay all taxes or other charges levied against the said park lands. 12. Metro covenants and agrees to idemnify and save harmless The Author- ity of and from any and all manner of claims, damages, loss, costs or charges whatsoever occasioned to or suffered by or imposed upon the Authority or its property, either directly or indirectly, in respect of any matter or tang in consequence of or in connection with or arising out of Metro's use, occupancy or development of the lands herein or out of any operation connected therewith or in respect of any accident, damage or injury to any person, animal or thing by, from or on account of the same. Metro covenants that the idemnity herein contained shall extend to all damages and claims for damages by reason of improper or faulty erection or construction of structures hereafter erected or installed on the said park lands or in connection therewith by Metro, its servants or agents and by reason of any insufficiency in such structures and whether or not same have been approved by The Authority, its servants or agents. 13. This agreement shall remain in full force and effect until supersed- ed by an agreement mutually acceptable to the parties hereto. C -24 - 12 - IN WITNESS WHEREOF THE parties hereto. have hereunto affixed their corporate seals attested by the hands of their proper officers duly authorized in that behalf. SIGNED, SEALED...U'JD DELIVERED) THE METROPOLITAN TORONTO AND REGION IN THE PRESENCE OF: ) CONSERVATION AUTHORITY ) THE MUNICIPALITY OF METROPOLITAN TORONTO fl?etropofttan 700t0 an" ie10n, Corkseruation Jugori% MINUTBS C -25 Flood & Pollution Control Advisory Board. Thursday, January 11/62 No. 3 The Flood and Pollution Control Advisory Board met in the Board Room at 17 Mill Street, on Thursday, January llth, 1962, commencing at 2 :00 P. m. Members of the Etobicoke - Mimico Advisory Board attended by invitation fcr the presentation of the MacLaren Report on the Etobicoke River at Brampton. PRESENT WERE: Authority Chairman Chairman, Flood & Pollution Control Advisory Board Vice - Chairman Members Members Etobicoke- Mimico Advisory Board Secretary- Treasurer Director of Operations Asst. Director of Operations Geographer Dr. G. Ross Lord R. G. Henderson W. J. Haggart R. E. Jones F. J. McKechnie A. Macdonald A. E. Reeve J. S. Scott V. Vignale K. G. Waters C. C. Core M. J. Breen H. M. Griggs C. F. Kline F. L. Lunn K. G. Higgs E. F. Sutter J. H. Horton MINUTES: The Minutes of Meeting No. 2/61 were presented. Res. #14 Moved By:- F. McKechnie Seconded By :- K. G. Waters Resolved That:- the Minutes of Meeting No. 2/61 as presented, be adopted. Carried Unanimously. STAFF PROGRESS REPORT: The Staff Progress Report for the period of September 1st to December 31st, 1961 was presented. Res. #15 Moved By:- F. McKechnie Seconded By:- J. S. Scott Resolved That:- the Staff Progress Report for the period of September 1st to December 31st, 1961, be received. Carried Unanimously. C -26 - 2 - PRELIMINARY BUDGET ESTIMATES - 1962 Res. #16 Moved By:- K. G. Waters Seconded By:- V. Vignale The Board Recommends That:- the Budget Estimates for 1962 as set forth herein be included in the 1962tBudget of the Authority: General Budget Items Acct. Item Budget A -102 Mapping $ 2,000. A -104. Operation of Flood Warning System 1,000. Stream Survey (pre impoundment) 2,500. Mimico Creek Engineering Study 50,000. Stouffville Engineering 6,000. Highland Creek Preliminary Engineering 10,000. Scheme for Extension of Flood Warning System 12,000. Fencing Flood Control Projects 10,000. $ 93,500. Carried Unanimously. REPORT ON THE ETOBICOKE RIVER AT BRAMPTON: Messrs. James''F. MacLaren and H. Fennerty presented an Engineering Report on the Etobicoke River at Brampton. The Report was discussed at some length. Res. #17 Moved By:- W. J. Haggart Seconded By:- R. E. Jones The Board Recommends That:- if the Authority is requested to undertake any part of the works contained in the report as a Schen e, that the proposed Mains Creek Storm Sewer Extension and the Ambleside Bridge be considered as local improvements and the responsibility of the T wn of Brampton; The Board Further Recommends Thatt- the Town of Brampton consider passing a by -law prohibiting the development of Flood Plain Lands within the boundaries of the Town; The Board Further Recommends That:- the Town of Brampton make representation to the Ontario Depart- ment of Highways to replace the two bridges on No. 10 Highway to the specifications as outlined in the MarcLaren Report; The Board Further Recommends That:- the Flood Plain and Conservation Lands in the valley of the Etobicoke Creek in the Town of Brampton be acquired as a part of the Plan for Flood Control and Water Conservation; The Board Further Recommends That:- a meeting be arranged with officials of the Town of Brampton to arrange for the carrying out of the necessary maintenance of the existing Diversion Channel. Carried Unanimously. C -27 3 FLOOD FORECASTING SYSTEM: The Staff presented a report for a Programme for the Establishment and Maintence of Hydrometric and Recording Rain Gauges, and the Operation of a Flood Forecasting System which is required by the Agree- ment between the Authority and the Province of Ontario for the Flood Control and Water Conservation Plan. Res. #1$ Moved By: R. E. Jones Seconded By: A. Macdonald Resolved That: the Report for the Establishment and Maintenance of Hydrometric and Recording Rain Gauges, and the Operation of a Flood Forecasting System, be received and appended as Schedule i "A" of these Minutes; The Board Recommends That : - the Programme be adopted, and further in this connection that the following action be taken: (a) that the Programme be submitted to the Minister of Lands and Forests for his consideration and approval and for the :fulfillment of Clause 21, Section 1, of the Agreement between the Authority and the Province of Ontario signed June 14th, 1961; (b) that when approved, copies be provided to all Municipalities and E.M.O. officials in the region under the jurisdiction of the Authority; Carried Unanimously. A Staff communication was presented suggesting that in accordance with the policy of the Authority to establish and operate a Flood Warning System, a further extension of this System be carried out in 1962. Res. #19 Moved By :- W. J. Haggart Seconded By:- A. E. Reeve The Board Recommends That:- Scheme W.C. -35 -- 74A Scheme for the Extension of the Flood Warning System"be adopted; and further in this connection that the following action be taken: (a) all Municipalities be designated as benefitting; (b) the Minister of Lands and Forests be requested to approve of the Scheme and a Grant of 50% of the cost thereof; (c) the Department of Lands and Forests, Conservation Authorities Branch, be requested to design Stream Gauging Stations for the Don River at Don Mills Road, the Humber River at Bolton, the Humber River at Woodbridge, and the Duffin Creek at the 4th Line; (d) following approval of the Scheme by the Minister of Lands and Forests, that.theSStaaff of the Authority, in co- operation with the Department of Northern Affairs and National Resources be authorized to construct the Stream Gauges to the extent of the Budget allotted for this purpose during 1962. Carried Unanimously. C -2$ 4. MASTER PLAN FOR FLOOD PLAIN AND CONSERVATION LANDS: As directed by the Executive, the Staff prssented a draft Master Plan of Flood Plain and Conservation Lands for all the major valleys within the region under the jurisdiction of the Authority. The Plan was studied in detail. Res. #20 Moved By: -_ A. Macdonald Seconded By- F. McKechnie Resolved That:- the Staff Report on the Master Plan for Flood Plain and Conservation Lands be received and appended as Schedule aBa of these Minutes; And Further In This Connection, the Board Recommends That:- the Master Plan for Flood Plain and Conservation Lands be adopted by tte Authority and submitted to the Minister of Lands and Forests for his approval; The Board Further Recommenris That:- when approval has been received, the Plan be made available to all interested Municipal officials for their in- formation and assistance; The Board Further Recommends That:- the Staff proceed with the preparation of detailed Property Plans for those lands included in the Master Plan; Carried Unanimously. PROPOSED CHANGE OF NAME: The name under which this Advisory Board has functioned was discussed at some length and it was felt desirable to consider changing it to comply with the designation of the Plan For Flood Control and Water Conservation. Res. #21 Moved By:- J. S. Scott Seconded By:- W. J. Haggart The Board Recommends That:- The Flood and Pollution Control Advisory Board henceforth be known as the Flood Control and Water Conservation Advisory Board. ADJOURNMENT: On Motion, the Meeting adjourned at 4:30 p.m. R. G. Henderson F. L. Lunn Chairman Secretary-Treasurer January 12th, 1962 C -29 REPORT NO. 3 of the FLOOD & POLLUTION CONTROL ADVISORY BOARD (being recommendations to the Executive Committee) 1. That the Budget Estimates for 1962 as set forth herein be included in the 1962 Budget of the Authority: General Budget Items Acct. Item Budget A -102 Mapping $ 2,000. A -104 Opertion of Flood Warning System 1,000. Stream Survey (pre impoundment) 2,500. Mimico Creek Engineering Study 50,000. Highland Creek Preliminr.y Engineering 10,000. Stouffville Engineering 6,000. Scheme for Extension of Flood Warning System 12,000. Fencing Flood. Control Projects 109000. $ 93,500. 2(e)That if the Authority is requested to undertake as a Scheme any part of the wa: ks contained in the Report on the Etobicoke River at Brampton as prepared by James F.. MacLaren Associates, that the proposed Mains Creek Storm Sewer Extension and the Ambleside Bridge be considered as local improvements and the responsibility of the Town of Brampton; 2(b)That the Town of Brampton consider passing a by -law prohibiting the development of Flood Plain Lands within the boundaries of the Town; 2(c)That the Town of Brampton make representation to the Ontario Department of Highways to replace the two bridges on No. 10 Highway to the specifications as outlined in the MacLaren Report; 2(d)That the Flood Plain and Conservation Lands in the valley of the Etobicoke Creek in the Town of Brampton be acquired as a part of the Plan For Flood Control and Water Conservation; 2(e)That a meeting be arranged with officials of the Town of Brampton to arrange for the carrying out of the necessary maintenance of the existing Diversion Chtnne1; 3. That the Programme for the Establishment and Maintenance of Hydro- metric and Recording Rain Gauges, and the Operation of a Flood Forecasting System be adopted, and further in this connection that the following action be taken: ('a) that the Programme be submitted to the Minister of Lands and Forests for his consideration and approval and for the fulfillment of Clause 21, Section 1, of the Agreement between the Authority and the Province of Ontario, signed June 14th, 1961; (b) that when approved, copies of the Programme be provided • to all Municipalities and E.M,O. officials in the region under the jurisdiction of the Authority; 4. That Scheme W.C. -35 -- "A Scheme for the Extension of the Flood Warning Systen'be adopted, and further in this connection that the following action be taken: C -30 - 2 - 4(a) all Municipalities be designated as benefitting; (b) the Minister of Lands and Forests be requested to approve of the Scheme and a Grant of 50% of the cost thereof; (c) the Department of Lands and Forests, Conservation Authorities Branch be requested to design Stream Gauging Stations for the Don River at Don Mills Road, the Humber River at Bolton, the Humber River at Woodbridge, and the Duffin Creek at the 4th Line; (d) following the approval of the Scheme by the Minister of Lands and Forests, that the Staff of the Authority, in co- operation with the Department of Northern Affairs and National Resources be authorized to construct the Stream Gauges to the extent of the Budget allotted for this purpose during 1962. 5(a)That the Master Plan for Flood Plain and Conservation Lands be adopted by the Authority and submitted to the Minister of Lands and Forests for his approval; .i (b)That when approval of the Master Plan has been received, that it be made available to all interested Municipal officials for their information and assistance; (c)That the Staff proceed with the preparation of detailed Property Plans for those lands included in the Master Plan; 6. That the Flood and Pollution Control Advisory Board henceforth be known as the Flood Control and Water Conservation Advisory Board. • SCHEDULE "A" PROGRAMME FOR THE ESTABLISHMENT AND MAINTENANCE OF HYDROMETRIC AND RECORDING RAIN GAUGES and THE OPERATION OF A FLOOD FORECASTING SYSTEM C -31 INTRODUCTION: The Metropolitan Toronto and Region Conservation Authority since its inception has operated a Flood Forecasting System. The Authority has been refining the System yearly and has established a number of Record- ing Stream Gauges, Recording Rain Gauges and Plastic Rain Gauges through out the region under its jurisdiction. On June 14th, 1961, the Authority signed an Agreement with the Province of Ontario for the purposes of carrying out a comprehensive plan to control floods and conserve water in the region under the jurisdiction of the Authority. One of the requirements of this Agree- ment is contained on Page 13 of the Agreement, Clause 21 (1), which states as follows: "The Authority will subnit to the Provincial Minister for approval within six months of the signing of this Agree- ment: (a) a Programme for the control and operation of the Dams and Reservoirs in the Metropolitan Toronto region under routine emergency conditions, and (b) a Programme for the establishment and maintenance of hydrometric and recording rain gauges in the Metropolitan Toronto region." The Authority respectfully submits this Report as part of the require- ments (1) (b). A further Report, as required for Section 21 (a), will be submitted upon completion of further studies. In the Plan For Flood Control and Water Conservation, the Metropolitan Toronto and Region Conservation Authority proposes a series of fifteen Dams and Reservoirs across the Authority?s watersheds which will have the primary purpose of controlling flood waters on the various rivers. In addition, the Authority will operate the Reservoirs to supplement low Summer flows, and many of these Reservoirs will offer much needed recreational benefits to the area. Construction of these units will extend over a 10 -year period beginning in 1962. The present Flood Forecasting System is designed in such a way as to integrate these flood control units, and it is primarily an extension of a system that has been put into effect by the Authority over the past few years. The Flood Forecasting System has therefore a two -fold purpose. First, the System must function effectively during the 10 -year construction period of the Dazes and Reservoirs. ' Along with this, it must be flexible enough to accommodate the flood control units as they are completed. Secondly, the system must provide hydrological data that will enable the characteristics of each water- shed to be determined. Information of this type is necessary in order that the flood forecasting unit be able to evaluate the seriousness of a flood situation. Such hydrological data will serve as well to influence the final design of the yet unconstructed Dam and Reservoir units. Ultimately, unit hydrographs for each part of the watershed will be prepared and flood routing procedures defined in order that the operation of the flood control units may be co-ordinated in the most effective manner to minimize danger to life and property. C -32 -. 2 - RAINFALL OBSERVER SYSTEM: The existing System comprises seven Recording Rain Gauges operated by the Authority and co- operating agencies as follows: Watershed Gauge Location and Agency Humber Mimic: Humber - Don - Rouge Albion Hills Conservation Area - M.T.R.C.A. Malton Airport - Meteorological Service of Canada Lake Wilcox - M.T.R.C.A. Don Maple - Dept. of Lands & Forests and Conservation Branch Don Bloor St. Headquarters - Canadian Meteorological Service Rouge - Duffin Stouffville - M.T.R.C.A. Duffin Greenwood Conservation Area - M.T.R.C.A. and Canadian Meteorological Service In addition, the Authority has established approximately forty observers throughout the entire region and each one of these is equipped with a Plastic Rain Gauge. Regular readings are taken by the observers of these Gauges and in addition, the observers are instructed to report as follows: (1) under alert conditions to report a significant amount of precipitation according to the instruction of the Report Centre; (2) under non -alert conditions to report a significant amount of precipitation, which is presently defined as one inch in twelve hours, or two inches in 24 hours; supporting this network of special (Plastic Gauge) rainfall observers are some 45 precipitation observation stations of the Meteorological Service of Canada using M.S.C. Standard Rain Gauges. These stations also supply rainfall data on request; The Authority proposes to maintain the existing System and to continue to expand the network of volunteer observers as required, and to replace non - operative observers as required. In addition, all head- quarter sites at each Dam and Reservoir will be provided with standard Rain Gauges and Plastic Rain Gauges. STREAM GAUGE SYSTEM: To obtain a complete hydrological history of the watersheds, it is necessary to:complement the precipitation readings with stream flow data. A number of types of Stream Gauges are in operation across the watersheds. Their locations are shown in the map appended to this Report. For flood warning purposes and for preparing hydrological descriptions of the areas, Recording Stream Gauges are considerably more useful than the Non - recording types. However, their high initial costs limit the numbers to be used. The Metropolitan Toronto and Region Conservation Authority, in co- operation with the Water Resources Branch of the Department of Northern Affairs and National Resources, and the Conservation Branch of the Department of Lands and Forests, has estab- lished and operates the following Recording Stream Gauges; Etobicoke Creek - Highway #5 at Summerville Humber River - West Branch at Thistletown Humber River Don River Highland Creek Duffin Creek Rau ge River Black Creek - 3 - - Main Branch at Weston - Main Branch at Woodbridge - East Branch at Pine Grove. - West Branch at York Mills - East Branch at Lansing - at Kingston Road - Main Branch at Highway No. 2 - East Branch at 4th Concession - Markham - Scarlett Road C -33 The Metropolitan Toronto and Region Conservation Authority, in co -oper- ation with the above listed agencies, proposes establishing Recording Stream Gauges at the following locations: Humber River - at Bolton Don River - Don Mills Road The Recording Stroam Gauges will provide a continuous record of flows and along with data from Recording Rain Gauges will indicate the effect of the rainfall on run -off. A hydrological picture of the water- shed characteristics would thus be obtained. In times of serious flooding, Gauges will indicate dangerous river stages and from an analysis of the situation prepared by the Flood Forecase Unit, warning can be given to,the areas in immediate danger. Non - recording, as well as Recording Gauges will also serve this latter purpose. The map appended to this report shows the location of existing recording Stream Gauges and tentative locations for additional Gauges to be constructed. As with the Rainfall Observers network, suitable Stream Gauge Observers are required at each location. Conservation Patrol Officers inspect sites at regular intervals. COMMUNICATIONS: The Metropolitan Toronto and Region Conservation Authority proposes to establish at its head office a central co- ordinating station for the operation of all Dams and Reservoirs constructed by the Authority. For the purposes of this Report, the central co- ordinating station is indicated as the Report Centre. Rainfall observers and Stream Gauge observers will report directly to the Report Centre. While telephone communication is adequate for the Rainfall and Stream Gauge observers, an extremely reliable method of communication is required for the links in the Flood Forecasting System. It is important that the Report Centre be in close contact with all Flood Control units. The Metropolitan Toronto and Region Conservation Authority proposes to underta'ce a study on the advisability and feasibility of developing a supervisory control system for the efficient operation of the flood control units to be constructed by the Authority. A competent consultant in this field will be engaged by the Authority. The study will include the means by which the Stream Gauges, Recording Rain Gauges and Dams can relay data to the Report Centre by the use of telemetering devices and a communications system. A complete investiga- tion of the communications network required for the supervisory control system will be made. Included in this aspect of tie:study will be a • comparative analysis of communications network established by: (a) the Bell Telephone Company of Canada and leased to the Authority; (b) the Authority's own radio network system; C -34 - 4 - (c) co- operation with the Municipality of Metropolitan Toronto; In addition, consideration will be given to the possibility of combining the Authority9s supervisory control system with a control centre to be developed by the Municipality of Metropolitan Toronto. OPERATION OF FLOOD FORECASTING SYSTEM: The operation of the flood forecasting system can be defined as follows. Case I will describe the situation where an alert has been issued. Case II will describe the situation where no alert has been given. Note: Forecast Unit is the River Forecast Office of the Conservation Branch, Ontario Department of Lends and Forests, Toronto. Case I: With Alert (1) Malton weather office alerts Forecast Unit. Details of approaching storm iven; rainfall expected, danger areas (storm location), expected duration of storms etc. (2) Forecast Unit alerts Report Centre. (3) Report Centre alerts: (i) Flood Control Units (ii) Mobile Units (iii) Metropolitan Works Departmant (iv) Other Municipal Offices (4) Rainfall and Stream Gauge Recorders alerted by tele- phone from Report Centre. (5) Critical flood situation develops. (6) Forecast Unit issues flood forecasts and warnings to Report Centre and press, radio and T.V. agencies. Flood forecasts and warnings relayed by Report Centre to Metropolitan Works Department, Metropolitan Emergency Measures Organization, Police and other Municipal Offices; (8) Instructions to Flood Control Units issued by Report Centre as directed by Forecast Unit. (9) Flood danger passes. (10) "Flood danger over" bulletin issued by Forecast Unit to Report Centre and press, radio and T.V. agencies. (11) "Flood danger over" bulletin relayed by Report Centre to (i) Metropolitan Works Department, (ii) Metropolitan Emergency Measures Organization, (iii) other Municipal Offices, (iv) Flood Control Units,'(v) Mobile Units. (12) Report Centre, on advice from Forecast Unit, instructs Dam operators on water dumping procedures. (7) Case II: With No Alert (1) Forecast Unit receives reports from Rainfall Observers which indicate possibility of flood. (2) Forecast Unit alerts Report Centre. (3) Report Centre alerts (i) Flood. Control Units, C -35 - 5 - (ii) Mobile Units, (iii) Metropolitan Works. Department, (iv) Metropolitan Emergency Measures Organization, and (v) other Municipal Offices. (4) to -as in Case I. (12) OPERATIONAL RESPONSIBILITIES AND PROCEDURES: Conservation Branch (Forecast Unit) (a) To issue flood alerts to the Conservation Authority (Report Centre) when a potential flood threat exists. (b) To issue specifically worded flood forecasts and warnings to the Report Centre and to the general public through press, radio and T.V. (c) To issue amendments to forecasts when conditions warrant, as in (b). (d) To issue "Flood danger over" bulletins at appropriate times, as in (b). (e) To issue instructions to Report Centre on operation of flood control units. Metropolitan Toronto and Region Conservation Authority (Report Centre) (a) To adequately staff the Report Centre during critical flood periods. (b) To direct Conservation Patrol Officers in their flood warning system duties. (c) To keep constant check on gauge readers and be certain that each knows when and where to report, and that they do so when required. (d) To collect information from rain gauge and stream gauge stations and Conservation Patrol Officers upon declaration of flood alert, and to forward same to Forecast Unit. (e) To direct operation of flood control units in accord with instructions from the Forecast Unit. (f) To disseminate flood alerts, forecasts and warnings to Metropolitan Emergency Measures Organization, Metropolitan Works Department, Police, and also to officials of municipalities outside Metropolitan Toronto but which are associated with the Authority, on receipt of same from the Forecast Unit. (g) To disseminate "flood danger over" bulletin to Metro- politan Emergency Measures Organization, Metropolitan Works Department, and other alerted agencies, on receipt of same from Forecast Unit. Public Weather Office, Department of Transport, Malton (a) To provide weather forecasts and weather observations on a routine basis to the Forecast Unit. (b) To issue special forecasts and reports of heavy rainfall to the Forecast Unit. C -36 -6 Metropolitan Works Department (a) To collect, during periods of floods and flood alerts, stream flow and rainfall data from their observation stations and forward same directly to the Report Centre. (b) To take action to protect public property under their jurisdiction upon receipt of a flood warning. Metropolitan Emergency Measures Organization (a) To disseminate flood warnings to public agencies, on receipt of same from the Report Centre. Public warnings will not be issued when a flood ?alert? is declared, but only when a specific flood warn- ing message is issued by the forecast unit. (b) To perform civil disaster duties as considered necessary. (c) To set up a mobile radio network in the region on receipt of flood warning, in order to collect flood data and relay same to Report Centre or Forecast Unit, as directed. In future, a direct 44tie -in22 with the Report Centre radio communications network will be possible. SCHEDULE "Bi' A MASTER PLAN FOR FLOOD PLAIN AND CONSERVATION LANDS C -37 Under the Authority9s Plan for Flood Control and Water Conservation, it is proposed to acquire approximately 7,200 acres of Flood Plain and Valley lands over the next 10 -year period. It is anticipated that most of this acreage will be included in the present report. A study was made of all the Flood Plain and Conservation Lands in the major valley systems of the Region -- more specifically the downstream sections of the Etobicoke and Mimico Creeks; the Humber, Don and Rouge Rivers; and the Highland and Duffin4s Creek. In accordance with the stated policy of the Authority, Flood Plain and Conservation Lands were considered to include all those lands lying be- tween the crest of the slope on one side of a river valley to the crest of the slope on the other side. The basic source of information was careful field study of each of the valleys under consideration. This was supplemented by reference to existing Authority Scheme Maps, Municipal Zoning and Assessment Maps, and Aerial Photographs. Further assistance was gained from a series of consultations with Municipal Planning Officials. Mapping was done on specially prepared Flood Line Maps at a scale of 10004 to 1". This scale was chosen because it was considered large enough to provide sufficient accuracy of detail, but small enough to present the material on a minimum number of sheets of useful, manageable size. All land falling within the definition of Flood Plain and Conservation Lands has been mapped and classified in one of the following c]a ssificat- ions, based on the ownership: (a) Authority -owned Lands: Lands already acquired by the Authority in connection with the Water Control Schemes. (b) Public Lands: All publicly -owned lands other than those already acquired by the Authority. This includes lands owned by Municipalities and Departments or Agencies of tle Province of Ontario and the Govern- ment of Canada. (c) Semi - private Lands: All lands held by private corporation such as hospitals and golf courses,vhich are available for open space type of use by some segment of the general public. Under their present use, these lands are not proposed for acquisition. (d) Private Lands: All lands under private ownership which are proposed for acquisition for Flood Control and Conservation purposes. The following table provides a breakdown of the acreages of each of the four categories of property on a watershed basis. The accompanying maps delineate those lands which, in the opinion of the Staff, should be included in the Master Plan. Altogether approximately 14,000 acres of Valley Land have been included in this Plan. It is recognized, however, that not all this land will be C -3$ - 2 - acquired by the Authority. Some of the publicly -owned lands will not become available to the Authority. As previously mentioned, it is not desirable at this time to acquire much of the semi - private land as its present use is consistent with policies of the Authority. The privately -owned lands are of particular importance and it is from within this framework that the majority of the Flood Plain and Conserv- ation Lands should be acquired under the Flood Control Plan, MASTER PLAN ACREAGES OF FLOOD PLAIN & CONSERVATION LANDS SEMI TOTAL WATERSHED PUBLIC PRIVATE PRIVATE AUTHORITY ACREAGE Etobicoke 662 1,413 330 $ 2,413 Mimic. 316 555 132 1,003 Humber 667 1,774 266 271 2,978 Don 1,485 790 700 518 3,493 Rouge 157 1,185 11. 40 1,393 Highland 247 570 219 377 1,413 Duffin's 102 1,15$ 56 1,316 GRAND TOTAL 3,636 7,445 1,714 1,214 14,009