Allegheny River Lock And Dam 5
Allegheny River Lock And Dam 5 is a gravity dam located in Armstrong County, Pennsylvania, built in 1927. It carries a Low hazard potential classification.
About Allegheny River Lock And Dam 5
Allegheny River Lock And Dam 5 is a dam in Armstrong, Pennsylvania. The dam is owned by Usace - Pittsburgh District (federal). It impounds the Allegheny River near Freeport.
The dam stands 16 feet tall and stretches 856 feet across, creates a reservoir covering 660 acres, has a maximum storage capacity of 9,800 acre-feet, and collects water from a drainage area of 9,351 square miles. Completed in 1927, the structure is well-established, with more than 75 years 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. An emergency action plan is in place for this dam. The most recent inspection on record was 08/09/2024.
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Location
| State | Pennsylvania |
| County | Armstrong |
| Nearest City | Freeport |
| River/Stream | Allegheny River |
| Coordinates | 40.68360, -79.66662 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 16 ft |
| Dam Length | 856 ft |
| Year Completed | 1927 (99 years old) |
Storage & Hydraulics
| NID Storage | 9,800 acre-ft |
| Max Storage | 9,800 acre-ft |
| Normal Storage | 9,800 acre-ft |
| Surface Area | 660 acres |
| Drainage Area | 9,351 sq mi |
| Max Discharge | 82,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | USACE - Pittsburgh District |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 08/09/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | PA00115 |
| Federal ID | PA00115 |
| More Info | State Dam Safety Program |