Lonesome

Lonesome is an earth dam located in Phillips County, Montana, built in 1946. It carries a Low hazard potential classification.

About Lonesome

The primary purpose of Lonesome is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Lloyd Knudsen (private). It impounds the Lonesome Coulee near Saco.

The dam stands 16 feet tall and stretches 250 feet across, and has a maximum storage capacity of 216 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 Hazard ConditionEmergency Action Plan: Not Required

Location

StateMontana
CountyPhillips
Nearest CitySaco
River/StreamLonesome Coulee
Coordinates47.98210, -108.04590

Physical Characteristics

Dam TypeEarth
NID Height16 ft
Dam Height16 ft
Dam Length250 ft
Year Completed1946 (80 years old)

Storage & Hydraulics

NID Storage216 acre-ft
Max Storage216 acre-ft
Normal Storage91 acre-ft

Ownership & Safety

PurposeFire Protection, Stock, Or Small Fish Pond
OwnerLLOYD KNUDSEN
Owner TypePrivate
Hazard ClassificationLow
Emergency Action PlanNot Required

Identifiers

NID IDMT01328
Federal IDMT01328
More InfoState Dam Safety Program

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