Patterson
Patterson is a timber crib dam located in Beaver County, Pennsylvania, built in 1825. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Patterson
The primary purpose of Patterson 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 Beaver Valley Power Company, Llc (private). It impounds the Beaver River near Beaver Falls.
The dam stands 14 feet tall and stretches 700 feet across, creates a reservoir covering 72 acres, has a maximum storage capacity of 380 acre-feet, and collects water from a drainage area of 1,981 square miles. Completed in 1825, 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 08/08/2017.
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Location
| State | Pennsylvania |
| County | Beaver |
| Nearest City | Beaver Falls |
| River/Stream | Beaver River |
| Coordinates | 40.74530, -80.31560 |
Physical Characteristics
| Dam Type | Timber Crib |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 700 ft |
| Year Completed | 1825 (201 years old) |
Storage & Hydraulics
| NID Storage | 380 acre-ft |
| Max Storage | 380 acre-ft |
| Normal Storage | 380 acre-ft |
| Surface Area | 72 acres |
| Drainage Area | 1,981 sq mi |
| Max Discharge | 60,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Beaver Valley Power Company, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/08/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | PA01790 |
| Federal ID | PA01790 |
| More Info | State Dam Safety Program |