Sentinel Detention Dam

Low HazardFair ConditionEmergency Action Plan: Not Required

Location

StateMontana
CountyPhillips
Nearest CityFORT PECK
River/StreamCK CK./MISSOURI RIVER
Coordinates47.76095, -108.42964

Physical Characteristics

Dam TypeGravity
NID Height33 ft
Dam Length491 ft
Year Completed1969 (57 years old)

Storage & Hydraulics

NID Storage256 acre-ft
Max Storage256 acre-ft
Normal Storage186 acre-ft
Surface Area29 acres
Drainage Area1 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeFire Protection, Stock, Or Small Fish Pond
OwnerDOI BLM
Owner TypeFederal
Hazard ClassificationLow
Condition AssessmentFair
Last Inspection10/24/2017
Emergency Action PlanNot Required

Identifiers

NID IDMT00718
Federal IDMT00718
More InfoState Dam Safety Program

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