Lake De Smet Boat Ramps

4 boat launches are mapped on Lake De Smet in Johnson County, Wyoming.

Lake De Smet facts

Surface area3,332 acres
TypeReservoir
Average depthabout 34 ft (normal storage ÷ surface area)
Shoreline lengthabout 14 miles
Surface elevation4,568 ft above sea level
DamLake Desmet (South Dam), completed 1975
Dam size120 ft high, 4,000 ft long, earth dam
Dam purposesWater Supply
Dam ownerJOHNSON COUNTY-LAKE DESMET OPERATING DEPT (Local Government)
Normal storage111,827 acre-feet
Impounded streamPiney and Rock Creek

Sources: USGS National Hydrography Dataset (public domain); HydroLAKES v1.0 (Messager et al. 2016, CC BY 4.0); U.S. Army Corps of Engineers National Inventory of Dams (NID ID WY02302). Matched to this page by name and location; modelled values are approximate. See all sources.

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