Dorys is a timber crib dam located in Pike County, Pennsylvania, built in 1919. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 471 ft long. 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 Dorys
The primary purpose of Dorys is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Blue Heron Development Company, Inc. (private). It impounds the Rock Hill Creek.
The dam stands 10 feet tall and stretches 471 feet across, creates a reservoir covering 52 acres, has a maximum storage capacity of 360 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1919, the structure is over a century 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 06/18/2020.
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Location
| State | Pennsylvania |
| County | Pike |
| River/Stream | Rock Hill Creek |
| Coordinates | 41.27333, -75.05639 |
Physical Characteristics
| Dam Type | Timber Crib |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 471 ft |
| Year Completed | 1919 (107 years old) |
Storage & Hydraulics
| NID Storage | 360 acre-ft |
| Max Storage | 360 acre-ft |
| Normal Storage | 199 acre-ft |
| Surface Area | 52 acres |
| Drainage Area | 6 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Blue Heron Development Company, Inc. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 06/18/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | PA00311 |
| Federal ID | PA00311 |
| More Info | State Dam Safety Program |