Manitoba has an abundant supply of surface water with many large lakes and thousands of smaller ones (chapter 2). However, much of the water is in the north or drains to the north where there is a sparse population. In the south dams and reservoirs have been constructed to conserve water in some areas, whereas in other places projects were designed to drain water from the land to make it suitable for cultivation. The province’s rivers offered enormous potential for hydroelectric power, much of which has now been exploited, starting with a small-scale project on the Little Saskatchewan River and progressing to large projects on the Winnipeg, Saskatchewan and Nelson rivers. Two thermal power stations at Brandon and Selkirk on the Assiniboine and Red rivers illustrate the need for an assurred water supply. Flooding has been a problem since the earliest days of the province, especially along the Assiniboine and Red rivers culminating in the 1997 “Flood of the Century” in the Red River Valley. Dams, diversions and ring dikes are used to divert the floodwaters to less critical areas.
One strategy to cope with flooding is to divert a stream or river around the vulnerable area. At St Pierre Jolys, Joubert Creek has been re- routed south 1 and west 2 of the main built-up area. Indications of its former natural channel can be seen in the south 3.
Figure 16.55: Diversion Channel at St. Pierre Jolys
Vertical colour air photo by Prairie Agri Photo
Flight height: ; lens focal length:
Scale 1:5,300 (approx.)
Location: Townships 5 and 6, Range 4 E (Note St. Pierre is located in an area surveyed into long lots; the location given is what it would be in the DLS system.)
Map sheets: 1:250,000 62H Winnipeg
1:50,000 62H/7 St. Malo
[i] Warkentin, J. and Ruggles, R. I. Historical Atlas of Manitoba. Winnipeg: Manitoba Historical Society. 1970, 370. A map of St. Pierré is included on page 371.