Fox Ridge Lake Dam

Fox Ridge Lake Dam is an earth dam located in Coles County, Illinois, built in 1941. It carries a Low hazard potential classification.

Hazard potentialLowFailure would cause limited damage
ConditionNot assessed
Emergency action planNone on file
Last inspection12/02/2023
Height36 ft
Built194185 years ago

Dam profile

NID height · 36 ft
36 FT TWO-STORY HOUSEMEDIAN U.S. DAM · 24 FT

36 ft tall and 365 ft long, taller than 82% of U.S. dams with a recorded height. 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 Fox Ridge Lake Dam

The primary purpose of Fox Ridge Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Illinois Natural History Survey (state). It impounds the Trib Embarras River near Greenup.

The dam stands 36 feet tall and stretches 365 feet across, creates a reservoir covering 13 acres, has a maximum storage capacity of 240 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1941, 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 12/02/2023.

At 36 feet, this dam is taller than 82% of dams nationwide.

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Location

StateIllinois
CountyColes
Nearest CityGreenup
River/StreamTrib Embarras River
Coordinates39.40289, -88.15766

Physical Characteristics

Dam TypeEarth
NID Height36 ft
Dam Height36 ft
Dam Length365 ft
Year Completed1941 (85 years old)

Storage & Hydraulics

NID Storage240 acre-ft
Max Storage240 acre-ft
Normal Storage104 acre-ft
Surface Area13 acres
Drainage Area1 sq mi
Max Discharge2,429 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerIllinois Natural History Survey
Owner TypeState
Hazard ClassificationLow
Condition AssessmentNot assessed
Last Inspection12/02/2023
Emergency Action PlanNo

Identifiers

NID IDIL00715
Federal IDIL00715
More InfoState Dam Safety Program