Colstrip Diversion Dam

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateMontana
CountyRosebud
Nearest CityCOLSTRIP
River/StreamTR-EAST FORK ARMMELLS CREEK
Coordinates45.90530, -106.65220

Physical Characteristics

Dam TypeEarth
NID Height44 ft
Dam Height44 ft
Dam Length535 ft
Year Completed1976 (50 years old)

Storage & Hydraulics

NID Storage260 acre-ft
Max Storage260 acre-ft
Normal Storage15 acre-ft
Surface Area21 acres
Drainage Area0 sq mi
Max Discharge940 cfs

Ownership & Safety

PurposeOther
OwnerTALEN ENERGY
Owner TypePublic Utility
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection07/14/2014
Emergency Action PlanYes

Identifiers

NID IDMT03213
Federal IDMT03213
More InfoState Dam Safety Program

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