Pilster Diversion One Dam

Pilster Diversion One Dam is a gravity dam located in Carter County, Montana, built in 1960. It carries a Low hazard potential classification and has a fair condition assessment.

About Pilster Diversion One Dam

The primary purpose of Pilster Diversion One Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Doi Blm (federal). It impounds the Willow Ck./little Missouri Riv near Camp Cook,s.d..

The dam stands 14 feet tall and stretches 1,909 feet across, creates a reservoir covering 27 acres, and has a maximum storage capacity of 104 acre-feet. Completed in 1960, 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 08/20/2016.

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Low HazardFair ConditionEmergency Action Plan: Not Required

Location

StateMontana
CountyCarter
Nearest CityCamp Cook,s.d.
River/StreamWillow Ck./little Missouri Riv
Coordinates45.09312, -104.66843

Physical Characteristics

Dam TypeGravity
NID Height14 ft
Dam Length1,909 ft
Year Completed1960 (66 years old)

Storage & Hydraulics

NID Storage104 acre-ft
Max Storage104 acre-ft
Surface Area27 acres
Spillway TypeUncontrolled

Ownership & Safety

PurposeIrrigation
OwnerDOI BLM
Owner TypeFederal
Hazard ClassificationLow
Condition AssessmentFair
Last Inspection08/20/2016
Emergency Action PlanNot Required

Identifiers

NID IDMT00614
Federal IDMT00614
More InfoState Dam Safety Program

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