Mccoy is an earth dam located in Iowa County, Wisconsin, built in 1974. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 19 ft19 ft tall and 335 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Mccoy
The primary purpose of Mccoy is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Mccoy, James (private). It impounds the Tr Blue Mounds Branch near Blanchardville.
The dam stands 19 feet tall and stretches 335 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 60 acre-feet, and collects water from a drainage area of 0 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. The most recent inspection on record was 10/27/2020.
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Location
| State | Wisconsin |
| County | Iowa |
| Nearest City | Blanchardville |
| River/Stream | Tr Blue Mounds Branch |
| Coordinates | 42.85094, -89.86425 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | 335 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 60 acre-ft |
| Max Storage | 60 acre-ft |
| Normal Storage | 21 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 60 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Mccoy, James |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 10/27/2020 |
| Emergency Action Plan | No |
Identifiers
| NID ID | WI00861 |
| Federal ID | WI00861 |
| More Info | State Dam Safety Program |