John Patrick Pond Dam
John Patrick Pond Dam is a concrete dam located in Rockland County, New York, built in 1955. It carries a Significant hazard potential classification and has a poor condition assessment.
About John Patrick Pond Dam
The primary purpose of John Patrick Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Pf Re Holdings, Llc (private). It impounds the Tr-mahwah River near Suffern.
The dam stands 13 feet tall and stretches 500 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 30 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1955, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 04/29/2022.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | New York |
| County | Rockland |
| Nearest City | Suffern |
| River/Stream | Tr-mahwah River |
| Coordinates | 41.17528, -74.07639 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 500 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 30 acre-ft |
| Max Storage | 30 acre-ft |
| Normal Storage | 27 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 234 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | PF RE Holdings, LLC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 04/29/2022 |
| Emergency Action Plan | No |
Identifiers
| NID ID | NY13260 |
| Federal ID | NY13260 |
| More Info | State Dam Safety Program |