Hilloch
Hilloch is an earth dam located in Delaware County, Pennsylvania, built in 1951. It carries a Significant hazard potential classification and has a fair condition assessment.
About Hilloch
The primary purpose of Hilloch is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Hilloch Homeowners Association (private). It impounds the Tr Harvey Run.
The dam stands 20 feet tall and stretches 345 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 55 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1951, the structure is well into its service life at over 50 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 09/11/2018.
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Location
| State | Pennsylvania |
| County | Delaware |
| River/Stream | Tr Harvey Run |
| Coordinates | 39.86917, -75.56722 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 345 ft |
| Year Completed | 1951 (75 years old) |
Storage & Hydraulics
| NID Storage | 55 acre-ft |
| Max Storage | 55 acre-ft |
| Normal Storage | 39 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | HILLOCH HOMEOWNERS ASSOCIATION |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 09/11/2018 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | PA00933 |
| Federal ID | PA00933 |
| More Info | State Dam Safety Program |