Cowan Reservoir

Low Hazard ConditionEmergency Action Plan: Not Required

Location

StateMontana
CountyChouteau
Nearest CityBOX ELDER
River/StreamDUCK CREEK
Coordinates48.25680, -109.90360

Physical Characteristics

Dam TypeEarth
NID Height20 ft
Dam Height20 ft
Dam Length990 ft
Year Completed1936 (90 years old)

Storage & Hydraulics

NID Storage211 acre-ft
Max Storage211 acre-ft
Normal Storage89 acre-ft
Max Discharge120 cfs

Ownership & Safety

PurposeIrrigation
OwnerCOWAN & SON INC
Owner TypePrivate
Hazard ClassificationLow
Emergency Action PlanNot Required

Identifiers

NID IDMT01574
Federal IDMT01574
More InfoState Dam Safety Program

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