The Mitchell Dam
The Mitchell Dam is the third flood control dam built by Intermountain Conservation District (IMCD). It was constructed in the fall of 2018 with the co-operation of landowner Mervin Mitchell, as part of IMCD’s long-term strategy to reduce flooding, erosion and infrastructure damages in the district.
The Mitchell Dam is designed as dry dam, so as to not hold water permanently. Rather, it has an undersized culvert pipe installed through it so it restricts water flow during spring runoff and large storms. It holds water back for a few days instead of a few hours, reducing the energy of the water and decreasing downstream flood damages. Then the dam reservoir will empty itself, ready and waiting for the next storm event.
Dam Construction Details:
Height of dam 2.5m (8ft)
Retention Capacity 15ac/ft
Drainage area 7800ac (12.2sq.mi)
Culvert diameter 900mm (3ft)
Culvert length 40m (130ft)
Earth used in dam 3500cu.m.
Rock in spillway 175cu.m.
Streambank Stabilization Project
Location: SW 25-29-19
This large streambank stabilization project has recently been finished. The rocks are being used to protect the streambank from falling into the river any further.
Before repairs, this riverbank was straight up and down with fully exposed soil. Many tons of soil have washed down the river on towards Lake Winnipegosis from this site, but will no more!