Dwyer Dam is a concrete dam located in Tompkins County, New York, built in 1966. It carries a Low hazard potential classification.
Dam profile
NID height · 36 ft36 ft tall and 78 ft long, taller than 82% 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 concrete gravity section and the water level is illustrative.
About Dwyer Dam
Dwyer Dam is a dam in Tompkins, New York. The dam is owned by Cornell University (private). It impounds the Cascadilla Creek near Ithaca.
The dam stands 36 feet tall and stretches 78 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 24 acre-feet, and collects water from a drainage area of 12 square miles. Completed in 1966, 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 07/31/1980. That was over 46 years ago.
At 36 feet, this dam is taller than 82% of dams nationwide.
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Location
| State | New York |
| County | Tompkins |
| Nearest City | Ithaca |
| River/Stream | Cascadilla Creek |
| Coordinates | 42.47667, -76.47667 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 78 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 24 acre-ft |
| Max Storage | 24 acre-ft |
| Normal Storage | 24 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 1,400 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | Cornell University |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 07/31/1980 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY01228 |
| Federal ID | NY01228 |
| More Info | State Dam Safety Program |