Massawippa Lake Dam is an earth dam located in Orange County, New York, built in 1934. It carries a Low hazard potential classification.
Dam profile
NID height · 22 ft22 ft tall and 463 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 Massawippa Lake Dam
The primary purpose of Massawippa Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Nysoprhp - Palisades Interstate Park Commission (state). It impounds the Tr-popolopen Brook.
The dam stands 22 feet tall and stretches 463 feet across, creates a reservoir covering 26 acres, and has a maximum storage capacity of 325 acre-feet. Completed in 1934, the structure is well-established, with more than 75 years of service.
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. The most recent inspection on record was 04/17/2009. That was over 17 years ago.
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Location
| State | New York |
| County | Orange |
| Nearest City | None |
| River/Stream | Tr-popolopen Brook |
| Coordinates | 41.32833, -74.07167 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 463 ft |
| Year Completed | 1934 (92 years old) |
Storage & Hydraulics
| NID Storage | 325 acre-ft |
| Max Storage | 325 acre-ft |
| Normal Storage | 325 acre-ft |
| Surface Area | 26 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Nysoprhp - Palisades Interstate Park Commission |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 04/17/2009 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY01093 |
| Federal ID | NY01093 |
| More Info | State Dam Safety Program |