Avon Marsh Dam is an earth dam located in Livingston County, New York, built in 1980. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 500 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 Avon Marsh Dam
The primary purpose of Avon Marsh Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Nys Dec Division of Fish and Wildlife (state). It impounds the Tr-honeoye Creek near North Avon.
The dam stands 10 feet tall and stretches 500 feet across, creates a reservoir covering 14 acres, has a maximum storage capacity of 46 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1980, the structure is 46 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 10/31/2024.
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Location
| State | New York |
| County | Livingston |
| Nearest City | North Avon |
| River/Stream | Tr-honeoye Creek |
| Coordinates | 42.90194, -77.66806 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 500 ft |
| Year Completed | 1980 (46 years old) |
Storage & Hydraulics
| NID Storage | 46 acre-ft |
| Max Storage | 46 acre-ft |
| Normal Storage | 37 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 163 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Nys Dec Division of Fish and Wildlife |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/31/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY10933 |
| Federal ID | NY10933 |
| More Info | State Dam Safety Program |