ERTH 2415 Lecture Notes - Lecture 20: Assiniboine River, Red River Floodway, Control Flow
3 Dec 2015
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Document Summary
Red river flows north and drains into lake winnipeg. Red river joins with the assiniboine river. Glacial lake agassiz deposited thick layers of clay creating a flat landscape in southern. After the glacial lake left, the red river started flowing. Red river is: meandering river, low gradient (~7cm per km, occupies a shallow valley (up to 15m deep, infamous for its floods! Europeans settled in southern manitoba in the 18th century so there are extensive flood records: long history of flooding, 1826 flood is largest flood of red river we know of, 1997 flood: Red river unique characteristics for canadian floods: flood is a flood not a lake, rise and fall slowly meaning they last for many weeks (not flash floods) Too much water: generally causes inundation damage and not erosion damage, basic red river flood recipe. Heavy snowfall during late part of winter (stores water) A late and sudden spring melt (generates runoff)
