Danelson Reservoir

Danelson Reservoir is an earth dam located in Daniels County, Montana, built in 1968. It carries a Low hazard potential classification.

About Danelson Reservoir

The primary purpose of Danelson Reservoir is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Julian Danelson (private). It impounds the Tr-line Coulee near Poplar.

The dam stands 22 feet tall and stretches 959 feet across, has a maximum storage capacity of 134 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1968, 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
CountyDaniels
Nearest CityPoplar
River/StreamTr-line Coulee
Coordinates48.68523, -105.28537

Physical Characteristics

Dam TypeEarth
NID Height22 ft
Dam Height22 ft
Dam Length959 ft
Year Completed1968 (58 years old)

Storage & Hydraulics

NID Storage134 acre-ft
Max Storage134 acre-ft
Normal Storage62 acre-ft
Drainage Area4 sq mi
Max Discharge780 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerJULIAN DANELSON
Owner TypePrivate
Hazard ClassificationLow
Emergency Action PlanNot Required

Identifiers

NID IDMT00966
Federal IDMT00966
More InfoState Dam Safety Program

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