Williamson Pond Dam is an earth dam located in Lucas County, Iowa, built in 1915. It carries a Low hazard potential classification.
Dam profile
NID height · 32 ft32 ft tall and 575 ft long, taller than 74% of U.S. dams with a recorded height. 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 Williamson Pond Dam
The primary purpose of Williamson Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Iowa Department of Natural Resources (state). It impounds the Tr-english Creek near Harvey.
The dam stands 32 feet tall and stretches 575 feet across, creates a reservoir covering 25 acres, has a maximum storage capacity of 484 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1915, the structure is over a century 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. The most recent inspection on record was 10/11/1989. That was over 37 years ago.
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Location
| State | Iowa |
| County | Lucas |
| Nearest City | Harvey |
| River/Stream | Tr-english Creek |
| Coordinates | 41.09680, -93.21600 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 575 ft |
| Year Completed | 1915 (111 years old) |
Storage & Hydraulics
| NID Storage | 484 acre-ft |
| Max Storage | 484 acre-ft |
| Normal Storage | 223 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 2 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Iowa Department of Natural Resources |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/11/1989 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01296 |
| Federal ID | IA01296 |
| More Info | State Dam Safety Program |