Langlade County Flowage
Langlade County Flowage is an earth dam located in Langlade County, Wisconsin, built in 1974. It carries a Low hazard potential classification and has a fair condition assessment.
About Langlade County Flowage
The primary purpose of Langlade County Flowage is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Wisconsin Department Of Natural Resources (state). It impounds the Tr Trappe River.
The dam stands 9 feet tall and stretches 400 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 90 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1974, 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 09/19/2017.
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Location
| State | Wisconsin |
| County | Langlade |
| Nearest City | None |
| River/Stream | Tr Trappe River |
| Coordinates | 45.14050, -89.35631 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 9 ft |
| Dam Height | 9 ft |
| Dam Length | 400 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 90 acre-ft |
| Max Storage | 90 acre-ft |
| Normal Storage | 70 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 45 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Wisconsin Department of Natural Resources |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 09/19/2017 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WI00859 |
| Federal ID | WI00859 |
| More Info | State Dam Safety Program |