Twin Parks 8
Twin Parks 8 is an earth dam located in Iowa County, Wisconsin, built in 1963. It carries a Low hazard potential classification and has a fair condition assessment.
About Twin Parks 8
The primary purpose of Twin Parks 8 is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by Iowa County (local government). It impounds the Trout Creek.
The dam stands 33 feet tall and stretches 637 feet across, has a maximum storage capacity of 970 acre-feet, and collects water from a drainage area of 9 square miles. Completed in 1963, 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 06/02/2015. That was over 10 years ago.
At 33 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Wisconsin |
| County | Iowa |
| Nearest City | None |
| River/Stream | Trout Creek |
| Coordinates | 43.06025, -89.95022 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 637 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 970 acre-ft |
| Max Storage | 970 acre-ft |
| Drainage Area | 9 sq mi |
| Max Discharge | 212 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | Iowa County |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/02/2015 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WI00361 |
| Federal ID | WI00361 |
| More Info | State Dam Safety Program |