Wyoming Upper

Wyoming Upper is a masonry dam located in Washington County, Rhode Island, built in 1885. It carries a High hazard potential classification and has a satisfactory condition assessment.

About Wyoming Upper

The primary purpose of Wyoming Upper 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 (state). It impounds the Wood River near Hopkinton.

The dam stands 15 feet tall and stretches 310 feet across, creates a reservoir covering 74 acres, has a maximum storage capacity of 444 acre-feet, and collects water from a drainage area of 59 square miles. Completed in 1885, the structure is over a century old.

This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam.

Living Downstream

If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Rhode Island dam safety program can provide more specific information about emergency planning for this structure.

Search for dams near your address to see all dams in your area with hazard classifications and safety data.

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateRhode Island
CountyWashington
Nearest CityHopkinton
River/StreamWood River
Coordinates41.51592, -71.70341

Physical Characteristics

Dam TypeMasonry
NID Height15 ft
Dam Height11 ft
Dam Length310 ft
Year Completed1885 (141 years old)

Storage & Hydraulics

NID Storage444 acre-ft
Max Storage444 acre-ft
Normal Storage385 acre-ft
Surface Area74 acres
Drainage Area59 sq mi
Max Discharge2,290 cfs

Ownership & Safety

PurposeFish and Wildlife Pond
OwnerRI DEM FISH & WILDLIFE
Owner TypeState
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Emergency Action PlanYes

Identifiers

NID IDRI01401
Federal IDRI01401
More InfoState Dam Safety Program

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