Chaumont Swamp Dam is an earth dam located in St. Lawrence County, New York, built in 1954. It carries a Low hazard potential classification.
Dam profile
NID height · 100 ft100 ft tall and 9,000 ft long, taller than 98% 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 embankment section and the water level is illustrative.
About Chaumont Swamp Dam
The primary purpose of Chaumont Swamp Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by St Lawrence County Development Agency (private). It impounds the Tr-oswegatchie River near Star Lake.
The dam stands 100 feet tall and stretches 9,000 feet across, creates a reservoir covering 207 acres, has a maximum storage capacity of 4,500 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1954, 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. The most recent inspection on record was 07/14/2010. That was over 16 years ago.
At 100 feet, this dam is taller than 98% of all dams in the United States.
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Location
| State | New York |
| County | St. Lawrence |
| Nearest City | Star Lake |
| River/Stream | Tr-oswegatchie River |
| Coordinates | 44.19333, -74.97167 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 100 ft |
| Dam Height | 100 ft |
| Dam Length | 9,000 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 4,500 acre-ft |
| Max Storage | 4,500 acre-ft |
| Normal Storage | 4,500 acre-ft |
| Surface Area | 207 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | St Lawrence County Development Agency |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 07/14/2010 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY01388 |
| Federal ID | NY01388 |
| More Info | State Dam Safety Program |