Doney Lake Dam

Doney Lake Dam is an earth dam located in Powell County, Montana, built in 1946. It carries a Low hazard potential classification.

About Doney Lake Dam

The primary purpose of Doney Lake Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by State Of Montana, D.o.c. (state). It impounds the Willow Creek near Drummond.

The dam stands 18 feet tall and stretches 285 feet across, and has a maximum storage capacity of 150 acre-feet. Completed in 1946, 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.

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Low HazardNot Available ConditionEmergency Action Plan: Not Required

Location

StateMontana
CountyPowell
Nearest CityDrummond
River/StreamWillow Creek
Coordinates46.44804, -112.95170

Physical Characteristics

Dam TypeEarth
NID Height18 ft
Dam Height18 ft
Dam Length285 ft
Year Completed1946 (80 years old)

Storage & Hydraulics

NID Storage150 acre-ft
Max Storage150 acre-ft
Normal Storage120 acre-ft
Max Discharge140 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeIrrigation
OwnerState Of Montana, D.O.C.
Owner TypeState
Hazard ClassificationLow
Condition AssessmentNot Available
Emergency Action PlanNot Required

Identifiers

NID IDMT01235
Federal IDMT01235
More InfoState Dam Safety Program

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