Autumn Lake Dam is an earth dam located in Oswego County, New York, built in 1971. It carries a Low hazard potential classification.
Dam profile
NID height · 28 ft28 ft tall and 510 ft long, taller than 62% 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 Autumn Lake Dam
The primary purpose of Autumn Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Barry Dean (private). It impounds the Tr-beaverdam Brook near Altmar.
The dam stands 28 feet tall and stretches 510 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 80 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1971, 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. The most recent inspection on record was 06/22/2000. That was over 26 years ago.
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Location
| State | New York |
| County | Oswego |
| Nearest City | Altmar |
| River/Stream | Tr-beaverdam Brook |
| Coordinates | 43.51889, -75.96444 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 510 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 80 acre-ft |
| Max Storage | 80 acre-ft |
| Normal Storage | 70 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 138 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Barry Dean |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/22/2000 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY00624 |
| Federal ID | NY00624 |
| More Info | State Dam Safety Program |