Greenwalt is an earth dam located in Westmoreland County, Pennsylvania, built in 1990. It carries a Significant hazard potential classification.
Dam profile
NID height · 27 ft27 ft tall and 785 ft long, taller than 59% 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 Greenwalt
The primary purpose of Greenwalt is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Terry L. Burns (private). It impounds the Crabtree Creek.
The dam stands 27 feet tall and stretches 785 feet across, creates a reservoir covering 15 acres, has a maximum storage capacity of 171 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1990, the structure is 36 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. An emergency action plan is in place for this dam. The most recent inspection on record was 02/20/2018.
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Location
| State | Pennsylvania |
| County | Westmoreland |
| River/Stream | Crabtree Creek |
| Coordinates | 40.36250, -79.45250 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 785 ft |
| Year Completed | 1990 (36 years old) |
Storage & Hydraulics
| NID Storage | 171 acre-ft |
| Max Storage | 171 acre-ft |
| Normal Storage | 92 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 2 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Terry L. Burns |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 02/20/2018 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | PA00476 |
| Federal ID | PA00476 |
| More Info | State Dam Safety Program |