Willow Springs Lake
Willow Springs Lake is a gravity dam located in Waukesha County, Wisconsin, built in 1966. It carries a Low hazard potential classification and has a fair condition assessment.
About Willow Springs Lake
The primary purpose of Willow Springs Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Spring Brook Watershed Lake Management Dist (local government). It impounds the Spring Brook near Saylesville.
The dam stands 20 feet tall and stretches 1,940 feet across, creates a reservoir covering 60 acres, has a maximum storage capacity of 590 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1966, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 02/10/2022.
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Location
| State | Wisconsin |
| County | Waukesha |
| Nearest City | Saylesville |
| River/Stream | Spring Brook |
| Coordinates | 42.92613, -88.36641 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 1,940 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 590 acre-ft |
| Max Storage | 590 acre-ft |
| Normal Storage | 220 acre-ft |
| Surface Area | 60 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 250 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | SPRING BROOK WATERSHED LAKE MANAGEMENT DIST |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 02/10/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WI00444 |
| Federal ID | WI00444 |
| More Info | State Dam Safety Program |