Wesley #1

Wesley #1 is an earth dam located in Prairie County, Montana, built in 1957. It carries a Low hazard potential classification.

About Wesley #1

The primary purpose of Wesley #1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Tibbetts Ranch Inc (private). It impounds the Tr-spring Creek near Fallon.

The dam stands 25 feet tall and stretches 360 feet across, has a maximum storage capacity of 77 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1957, the structure is well into its service life at over 50 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.

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Low Hazard ConditionEmergency Action Plan: Not Required

Location

StateMontana
CountyPrairie
Nearest CityFallon
River/StreamTr-spring Creek
Coordinates46.75900, -105.30120

Physical Characteristics

Dam TypeEarth
NID Height25 ft
Dam Height25 ft
Dam Length360 ft
Year Completed1957 (69 years old)

Storage & Hydraulics

NID Storage77 acre-ft
Max Storage77 acre-ft
Normal Storage40 acre-ft
Drainage Area5 sq mi
Max Discharge800 cfs

Ownership & Safety

PurposeIrrigation
OwnerTIBBETTS RANCH INC
Owner TypePrivate
Hazard ClassificationLow
Emergency Action PlanNot Required

Identifiers

NID IDMT02389
Federal IDMT02389
More InfoState Dam Safety Program

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