Upper Post Lake
Upper Post Lake is a gravity dam located in Langlade County, Wisconsin, built in 1932. It carries a Low hazard potential classification and has a fair condition assessment.
About Upper Post Lake
The primary purpose of Upper Post Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Post Lake Protection & Rehabilitation District (private). It impounds the Wolf River near Pearson.
The dam stands 10 feet tall and stretches 200 feet across, creates a reservoir covering 1,134 acres, has a maximum storage capacity of 13,000 acre-feet, and collects water from a drainage area of 122 square miles. Completed in 1932, the structure is well-established, with more than 75 years of service.
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 10/19/2017.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Wisconsin |
| County | Langlade |
| Nearest City | Pearson |
| River/Stream | Wolf River |
| Coordinates | 45.43726, -89.08650 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 200 ft |
| Year Completed | 1932 (94 years old) |
Storage & Hydraulics
| NID Storage | 13,000 acre-ft |
| Max Storage | 13,000 acre-ft |
| Normal Storage | 4,000 acre-ft |
| Surface Area | 1,134 acres |
| Drainage Area | 122 sq mi |
| Max Discharge | 1,820 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Post Lake Protection & Rehabilitation District |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 10/19/2017 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WI00698 |
| Federal ID | WI00698 |
| More Info | State Dam Safety Program |