Taff
Taff is a gravity dam located in Columbia County, Wisconsin, built in 1954. It carries a Low hazard potential classification and has a fair condition assessment.
About Taff
The primary purpose of Taff is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Taff, Larry (private). It impounds the Rocky Run.
The dam stands 10 feet tall and stretches 300 feet across, creates a reservoir covering 15 acres, has a maximum storage capacity of 70 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1954, 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. The most recent inspection on record was 07/02/2015. That was over 10 years ago.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Wisconsin |
| County | Columbia |
| Nearest City | None |
| River/Stream | Rocky Run |
| Coordinates | 43.45588, -89.27235 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 300 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 70 acre-ft |
| Max Storage | 70 acre-ft |
| Normal Storage | 40 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 372 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Taff, Larry |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 07/02/2015 |
| Emergency Action Plan | No |
Identifiers
| NID ID | WI00645 |
| Federal ID | WI00645 |
| More Info | State Dam Safety Program |