- Shellmouth Reservoir
Infobox lake
lake_name = Lake of the Prairies
image_lake = Shellmouth.jpg
caption_lake = Shellmouth Dam
image_bathymetry =
caption_bathymetry=
location =Manitoba
coords = coord|50|58|35|N|101|24|26|W|type:waterbody_region:CA-MB|display=inline,title
type = reservoir
inflow =Assiniboine River , Shell River, Cupar Creek
outflow =Assiniboine River
catchment =
basin_countries =Canada
length =
width =
area =
depth =
max-depth =
volume = 480,000,000 m³
residence_time =
shore =
elevation = m to ft|425|abbr=yes|wiki=yes
islands =
cities =
frozen = The Shellmouth Reservoir is a man-made reservoir inManitoba ,Canada . It is located near the border withSaskatchewan The Shellmouth Dam was built by PFRA(Prairie Farm Rehabilitation Administration). Construction started in 1964 and was completed in 1972 costing $10.8 million. The dam is convert|70|ft|m high and convert|4200|ft|m long. The reservoir is convert|35|mi|km in length and stores 390,000 acre-foot (480,000,000 m³) at it full supply level of convert|1408.5|ft|m. Outflows are controlled by three gated conduits and a convert|210|ft|m|sing=on wide concrete chute spillway.
The dam and reservoirs are part of a strategy to reduce the risk of flooding on the
Assiniboine River and inWinnipeg . For example in 1997 the inflow to the reservoir peaked at convert|10000|cuft|m3 per second but the outflow didn't exceeded 1700 cfs. The reservoir is also used supplement flows on the Assiniboine when conditions are dry ensuring water supply for Brandon, Portage la Prairie, irrigations and some industries.The reservoir is also known by the name "Lake of the Prairies".
Asessippi Provincial Park is established around the southern arm of the lake.ee also
*
Portage Diversion (Assiniboine River Floodway)
*Red River Floodway
*Assiniboine River External links
* [http://www.quantumlynx.com/water/vol7no2/story2.html Flood control works]
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