Rockville Lake Dam is an earth dam located in Allegany County, New York, built in 1977. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 1,000 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 Rockville Lake Dam
The primary purpose of Rockville Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. It impounds the Black Creek near Belfast.
The dam stands 12 feet tall and stretches 1,000 feet across, creates a reservoir covering 27 acres, has a maximum storage capacity of 219 acre-feet, and collects water from a drainage area of 24 square miles. Completed in 1977, the structure is 49 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. The most recent inspection on record was 05/22/2002. That was over 24 years ago.
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Location
| State | New York |
| County | Allegany |
| Nearest City | Belfast |
| River/Stream | Black Creek |
| Coordinates | 42.30667, -78.15167 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 1,000 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 219 acre-ft |
| Max Storage | 219 acre-ft |
| Normal Storage | 96 acre-ft |
| Surface Area | 27 acres |
| Drainage Area | 24 sq mi |
| Max Discharge | 200 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner Type | Not Listed |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/22/2002 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY00923 |
| Federal ID | NY00923 |
| More Info | State Dam Safety Program |