Knowlesville Marsh Dam
Knowlesville Marsh Dam is an earth dam located in Genesee County, New York, built in 1964. It carries a Low hazard potential classification and has a fair condition assessment.
About Knowlesville Marsh Dam
The primary purpose of Knowlesville Marsh Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Us Fish And Wildlife Service (federal). It impounds the Tributary To Oak Orchard Creek.
The dam stands 11 feet tall and stretches 940 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 274 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1964, 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 07/22/2019.
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Location
| State | New York |
| County | Genesee |
| River/Stream | Tributary To Oak Orchard Creek |
| Coordinates | 43.11330, -78.33330 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 940 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 274 acre-ft |
| Max Storage | 274 acre-ft |
| Normal Storage | 12 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 48 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | US FISH AND WILDLIFE SERVICE |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 07/22/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY00381 |
| Federal ID | NY00381 |
| More Info | State Dam Safety Program |