Muddy Run Recreation Dam is a rockfill dam located in Lancaster County, Pennsylvania, built in 1967. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 90 ft90 ft tall and 750 ft long, taller than 97% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic rockfill embankment section and the water level is illustrative.
About Muddy Run Recreation Dam
The primary purpose of Muddy Run Recreation Dam 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 Constellation Energy Generation, LLC (nyro) (public utility). It impounds the Susquehanna River near Cold Cabin Boat Launch.
The dam stands 90 feet tall and stretches 750 feet across, creates a reservoir covering 100 acres, has a maximum storage capacity of 3,000 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1967, the structure is well into its service life at over 50 years old.
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. An emergency action plan is in place for this dam. The most recent inspection on record was 08/20/2022.
At 90 feet, this dam is taller than 97% of all dams in the United States.
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Location
| State | Pennsylvania |
| County | Lancaster |
| Nearest City | Cold Cabin Boat Launch |
| River/Stream | Susquehanna River |
| Coordinates | 39.84063, -76.28288 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 90 ft |
| Dam Height | 90 ft |
| Dam Length | 750 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 3,000 acre-ft |
| Max Storage | 3,000 acre-ft |
| Normal Storage | 2,700 acre-ft |
| Surface Area | 100 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 11,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Constellation Energy Generation, LLC (nyro) |
| Owner Type | Public Utility |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/20/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | PA01562 |
| Federal ID | PA01562 |
| More Info | State Dam Safety Program |