Cortney Dam

Cortney Dam is an earth dam located in Fall River County, South Dakota, built in 1999. It carries a Low hazard potential classification.

About Cortney Dam

The primary purpose of Cortney Dam 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 Usda Fs (federal). It impounds the Cortney Creek.

The dam stands 20 feet tall and stretches 766 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 57 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1999, the structure is 27 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 08/28/2001. That was over 24 years ago.

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Low Hazard ConditionEmergency Action Plan: Not Required

Location

StateSouth Dakota
CountyFall River
River/StreamCortney Creek
Coordinates43.29174, -103.03204

Physical Characteristics

Dam TypeEarth
NID Height20 ft
Dam Height20 ft
Dam Length766 ft
Year Completed1999 (27 years old)

Storage & Hydraulics

NID Storage57 acre-ft
Max Storage57 acre-ft
Normal Storage30 acre-ft
Surface Area8 acres
Drainage Area1 sq mi
Max Discharge555 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFish and Wildlife Pond
OwnerUSDA FS
Owner TypeFederal
Hazard ClassificationLow
Last Inspection08/28/2001
Emergency Action PlanNot Required

Identifiers

NID IDSD02486
Federal IDSD02486
More InfoState Dam Safety Program

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