Lake Byllesby Dam
| Byllesby Dam | |
|---|---|
  Location of Byllesby Dam in Minnesota | |
| Country | United States |
| Location | Dakota County and Goodhue County, Minnesota |
| Coordinates | Coordinates: 44°30′42″N 92°56′24″W / 44.51180°N 92.94005°W |
| Status | Operational |
| Opening date | 1910 |
| Owner(s) | Dakota County, Minnesota |
| Dam and spillways | |
| Type of dam | Concrete gravity dam |
| Impounds | Cannon River |
| Height | 75-foot (23 m) |
| Reservoir | |
| Creates | Lake Byllesby |
| Total capacity | 20,000 acre feet (25,000,000 m3) |
| Surface area | 1,432 acres (580 ha) |
Lake Byllesby Dam is a concrete gravity dam located in Randolph Township, Dakota County and Stanton Township, Goodhue County, Minnesota, just west of the city of Cannon Falls. It is approximately 30-mile (48 km) southeast of the Twin Cities.
The 75-foot (23 m)-high dam was built in 1910 by H.M. Byllesby & Company to impound the Cannon River for hydroelectric power. Its nameplate capacity is 1.8 MW.[1][2] Byllesby, a former employee of both Edison and Westinghouse, formed what would become Northern States Power in 1909.[3]
The dam created Lake Byllesby, with a surface area of 1,432 acres (580 ha) and a capacity of 20,000 acre feet (25,000,000 m3).
The facility is owned and operated by Dakota County.
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