CONSTRUCTION 



Construction staff completed the construction of water con- 

 trol dams located at Omemee, LeCrou Lake, White Lake, 

 Southampton, Pine Lake. Pevensey Lake, Sheldrake Lake, 

 Billings Lake, Tiny Marsh, and Dryden Nursery. 



A water outlet control structure was built at Keewatin to 

 present the uncontrolled discharge of waters from the west 

 end of Portage Bay of Lake of the Woods. The structure will 

 assist in determining total outflow from Lake of the Woods. 



A program to save Marentette Beach from erosion and 

 protect cottages and low-lying farm lands was completed 

 with construction of erosion control structures along 5,000 

 feet of beach on the easterly shore of Point Pelee imme- 

 diately north of Point Pelee National Park. Installation of 

 gabion mattresses, headwalls and groynes, as well as timber 

 groynes and headwalls, clay dykes and stone-filled timber 

 cribs, was completed and a three-year study program 

 launched to determine their effectiveness. 



Other miscellaneous construction was completed, includ- 

 ing a water storage pond at Widhurst Nursery, a sheet pile 

 retaining wall at the Fisheries Research Station at Wheatley, 

 a dock at Rondeau Provincial Park, and a lamprey control 

 section in the Little French River. 



Construction was commenced on an outlet for Farren 

 Lake, and a water control dam at Mackenzie Lake, and an 

 access road was completed to the site of the Whitewater 

 Lake Dam, scheduled for construction in 1971. 



MAINTENANCE 



Maintenance of h>draulic structures and docks were sched- 

 uled on the basis of condition determined from inspection 

 and reports submitted from districts. In addition to main- 

 tenance of docks at MacDiarmid, Severn Falls and Rondeau 

 Provincial Park, routine maintenance was carried out on 

 locks at Port Carling, Huntsville, and Magnetawan. Mainte- 

 nance of dams at the following locations was carried out. 



Watts Lake 

 Kahshe Lake 

 Finlayson Lake 

 Port Sydney 

 Fluntsville 

 Magnetawan 

 Minnow Lake 

 Ahmic Lake 

 Knoephli Falls 

 Wood Lake 

 Bala (North dam) 

 Baysville 

 Naiscoot Lake 



Oxford Mills 

 Westport 

 Lyndhurst 

 Delta 

 Birch Lake 

 Tube Lake 

 Manitou Lake 

 Washagami Lake 

 Nepawassi Lake 

 Johnnie Lake 

 Lyso Lake 

 Minisinakwa Lake 

 Penache Lake 



North Milne Lake 

 Marten River 

 Turtle Lake 

 Tilden Lake 

 White River 

 Denbigh 

 Summit Lake 

 Dwyers Marsh 

 Skootamatta Lake 

 Malcolm Lake 

 Baptiste Lake 

 Weslemkoon Lake 

 Paudash Lake 



Wakami River 

 Chapleau 

 Ivanhoe Lake 

 Charlton Lake 

 Gowganda 

 Larder Lake 

 Duncan Lake 

 Kenogamisis Lake 



Shirley Lake 

 Ragged Lake 

 Rock Lake 

 Booth Lake 

 Galeairy Lake 

 Opeongo Lake 

 Burnt Island Lake 

 Lake Traverse 



Bottle Creek 

 Cordova Lake 

 Salerno Lake 

 Digby Lake 

 Kasshabog Lake 

 Round Lake 

 Kinmount 



IMPROVEMENTS TO FLOW CHANNELS 



improvements to flow channels, by clearing debris and 

 floating bogs, and the dredging, widening and deepening 

 of flow channels, was carried out to increase efficiency in 

 discharging water from Department-owned dams, to im- 

 prove flow between controlled waters, or to decrease down- 

 stream flooding resulting from the Department's operation 

 of a dam. 



This year, major improvements were undertaken on 

 Bernard Creek, the waterway connecting Pike, Crosby and 

 Little Crosby Lakes, and Skeleton River. 



INSPECTION 



Of the 250 Department owned and operated dams, approxi- 

 mately 15 per cent were inspected either as a result of 

 requests or expressions of concern for the safety and protec- 

 tion of down-stream interests or as a matter of routine. 

 Reports were prepared and recommendations made to 

 either repair or proceed to construction at some future date 

 in each instance. 



ENGINEERING CONSULTATIONS 



The Section provides engineering consultation for design, 

 construction or reconstruction of Departmental facilities. 

 Engineering studies and reports are provided by staff or by 

 utilizing the services of consultants specializing in given 

 areas. 



Specialists in ground water supply, soil analysis, aerial 

 surveying, hydraulics and erosion control were retained for 

 specific projects. Of particular interest this year were two 

 engineering reports — the first, an assessment of the flood 

 damage in the Sault Ste. Marie-Sudbury area resulting from 

 an intense storm which took place between May 30 and 

 June 3rd, prepared by a staff member; and the second, a 

 flood control study of the Onaping-Vermilion River water- 

 sheds prompted by severe flooding in the Municipality of 

 Dowling as a result of the May 30-June 3rd storm. The latter 

 study was undertaken by a consultant. 



Feasibility studies were undertaken, and reports and costs 

 estimates were prepared on matters related to equipment, 

 water supply, and outdoor facilities for fish culture stations. 



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