Griffis
Griffis is an earth dam located in Susquehanna County, Pennsylvania, built in 1989. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Griffis
The primary purpose of Griffis is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Anita Griffis (private). It impounds the Tr Middle Br Wyalusing Creek.
The dam stands 17 feet tall and stretches 300 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 110 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1989, the structure is 37 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 08/25/2020.
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Location
| State | Pennsylvania |
| County | Susquehanna |
| River/Stream | Tr Middle Br Wyalusing Creek |
| Coordinates | 41.86889, -75.98056 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 300 ft |
| Year Completed | 1989 (37 years old) |
Storage & Hydraulics
| NID Storage | 110 acre-ft |
| Max Storage | 110 acre-ft |
| Normal Storage | 14 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | ANITA GRIFFIS |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/25/2020 |
| Emergency Action Plan | No |
Identifiers
| NID ID | PA01420 |
| Federal ID | PA01420 |
| More Info | State Dam Safety Program |