Kasoag Lake Dam is an earth dam located in Oswego County, New York, built in 1820. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 180 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 Kasoag Lake Dam
The primary purpose of Kasoag Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Oswego County (local government). It impounds the West Branch Fish Creek near Williamstown.
The dam stands 10 feet tall and stretches 180 feet across, creates a reservoir covering 58 acres, and has a maximum storage capacity of 192 acre-feet. Completed in 1820, the structure is one of the older dams in the region, with over a century and a half of service.
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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 05/19/2017.
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Location
| State | New York |
| County | Oswego |
| Nearest City | Williamstown |
| River/Stream | West Branch Fish Creek |
| Coordinates | 43.46778, -75.92222 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 180 ft |
| Year Completed | 1820 (206 years old) |
Storage & Hydraulics
| NID Storage | 192 acre-ft |
| Max Storage | 192 acre-ft |
| Normal Storage | 192 acre-ft |
| Surface Area | 58 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Oswego County |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 05/19/2017 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY01423 |
| Federal ID | NY01423 |
| More Info | State Dam Safety Program |