Mt. Tom Wildlife Marsh is a gravity dam located in Washington County, Rhode Island, built in 1964. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 8 ft8 ft tall and 230 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Mt. Tom Wildlife Marsh
The primary purpose of Mt. Tom Wildlife Marsh is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Ri Dem Fish & Wildlife (private). It impounds the Woody Hill Brook near Exeter.
The dam stands 8 feet tall and stretches 230 feet across, creates a reservoir covering 25 acres, has a maximum storage capacity of 180 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1964, 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. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks.
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Location
| State | Rhode Island |
| County | Washington |
| Nearest City | Exeter |
| River/Stream | Woody Hill Brook |
| Coordinates | 41.55828, -71.73460 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 8 ft |
| Dam Height | 6 ft |
| Dam Length | 230 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 180 acre-ft |
| Max Storage | 180 acre-ft |
| Normal Storage | 130 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 94 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Ri Dem Fish & Wildlife |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Emergency Action Plan | No |
Identifiers
| NID ID | RI01107 |
| Federal ID | RI01107 |
| More Info | State Dam Safety Program |