Diamond Island Diversion Dam
Diamond Island Diversion Dam is a concrete dam located in Jefferson County, New York, built in 1914. It carries a Low hazard potential classification.
About Diamond Island Diversion Dam
The primary purpose of Diamond Island Diversion Dam is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Central Rivers Power, Llc (private). It impounds the Black River near Watertown.
The dam stands 13 feet tall and stretches 710 feet across, creates a reservoir covering 31 acres, has a storage capacity of 134 acre-feet, and collects water from a drainage area of 1,888 square miles. Completed in 1914, the structure is over a century 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 07/31/1998. That was over 27 years ago.
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Location
| State | New York |
| County | Jefferson |
| Nearest City | Watertown |
| River/Stream | Black River |
| Coordinates | 43.98278, -75.88583 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 710 ft |
| Year Completed | 1914 (112 years old) |
Storage & Hydraulics
| NID Storage | 134 acre-ft |
| Normal Storage | 134 acre-ft |
| Surface Area | 31 acres |
| Drainage Area | 1,888 sq mi |
| Max Discharge | 52,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Central Rivers Power, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 07/31/1998 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY01534 |
| Federal ID | NY01534 |
| More Info | State Dam Safety Program |