Cornish Flowage

Cornish Flowage is an earth dam located in Aitkin County, Minnesota, built in 1976. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Cornish Flowage

The primary purpose of Cornish Flowage 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 Mndnr-wildlife (state). It impounds the Savannah River-tr near Libby.

The dam stands 11 feet tall and stretches 38 feet across, creates a reservoir covering 300 acres, has a maximum storage capacity of 2,000 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1976, the structure is 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 08/22/2019.

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Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateMinnesota
CountyAitkin
Nearest CityLibby
River/StreamSavannah River-tr
Coordinates46.88688, -93.21769

Physical Characteristics

Dam TypeEarth
NID Height11 ft
Dam Height10 ft
Dam Length38 ft
Year Completed1976 (50 years old)

Storage & Hydraulics

NID Storage2,000 acre-ft
Max Storage2,000 acre-ft
Surface Area300 acres
Drainage Area4 sq mi
Max Discharge30 cfs

Ownership & Safety

PurposeFish and Wildlife Pond
OwnerMNDNR-Wildlife
Owner TypeState
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection08/22/2019
Emergency Action PlanNot Required

Identifiers

NID IDMN00997
Federal IDMN00997
More InfoState Dam Safety Program

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