Lone Tree

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

About Lone Tree

The primary purpose of Lone Tree is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Lloyd Knudsen (private). It impounds the Tr-beaver Creek near Saco.

The dam stands 17 feet tall and stretches 300 feet across, has a maximum storage capacity of 96 acre-feet, and collects water from a drainage area of 2 square miles. 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/StreamTr-beaver Creek
Coordinates47.95540, -108.05100

Physical Characteristics

Dam TypeEarth
NID Height17 ft
Dam Height17 ft
Dam Length300 ft
Year Completed1946 (80 years old)

Storage & Hydraulics

NID Storage96 acre-ft
Max Storage96 acre-ft
Normal Storage90 acre-ft
Drainage Area2 sq mi
Max Discharge500 cfs

Ownership & Safety

PurposeIrrigation
OwnerLLOYD KNUDSEN
Owner TypePrivate
Hazard ClassificationLow
Emergency Action PlanNot Required

Identifiers

NID IDMT01327
Federal IDMT01327
More InfoState Dam Safety Program

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