Cedar Lake Dam
Cedar Lake Dam is an earth dam located in Oswego County, New York, built in 1985. It carries a Significant hazard potential classification and has a poor condition assessment.
About Cedar Lake Dam
The primary purpose of Cedar Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Thomas N. Kerr Jr. (private). It impounds the Beaverdam Brook near Altmar.
The dam stands 15 feet tall and stretches 200 feet across, creates a reservoir covering 30 acres, has a maximum storage capacity of 448 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1985, the structure is 41 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 10/04/2023.
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Location
| State | New York |
| County | Oswego |
| Nearest City | Altmar |
| River/Stream | Beaverdam Brook |
| Coordinates | 43.52222, -75.95611 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 200 ft |
| Year Completed | 1985 (41 years old) |
Storage & Hydraulics
| NID Storage | 448 acre-ft |
| Max Storage | 448 acre-ft |
| Normal Storage | 251 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 313 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Thomas N. Kerr Jr. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 10/04/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | NY00338 |
| Federal ID | NY00338 |
| More Info | State Dam Safety Program |