Vernon Marsh-mid.flowage
Vernon Marsh-mid.flowage is an earth dam located in Waukesha County, Wisconsin, built in 1962. It carries a Low hazard potential classification and has a fair condition assessment.
About Vernon Marsh-mid.flowage
Vernon Marsh-mid.flowage is a dam in Waukesha, Wisconsin. The dam is owned by Wisconsin Department Of Natural Resources (state). It impounds the Mill Brook.
The dam stands 7 feet tall and stretches 4,000 feet across, creates a reservoir covering 250 acres, has a maximum storage capacity of 830 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1962, 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 10/07/2020.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Wisconsin |
| County | Waukesha |
| Nearest City | None |
| River/Stream | Mill Brook |
| Coordinates | 42.92048, -88.28462 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 7 ft |
| Dam Height | 7 ft |
| Dam Length | 4,000 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 830 acre-ft |
| Max Storage | 830 acre-ft |
| Normal Storage | 330 acre-ft |
| Surface Area | 250 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 150 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | Wisconsin Department of Natural Resources |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 10/07/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WI01103 |
| Federal ID | WI01103 |
| More Info | State Dam Safety Program |