Felt Coulee Dam

Felt Coulee Dam is an earth dam located in Petroleum County, Montana, built in 1971. It carries a Low hazard potential classification.

About Felt Coulee Dam

The primary purpose of Felt Coulee Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Hans Marks (private). It impounds the Tr-box Elder Creek near Mosby.

The dam stands 19 feet tall and stretches 680 feet across, has a maximum storage capacity of 129 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1971, 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
CountyPetroleum
Nearest CityMosby
River/StreamTr-box Elder Creek
Coordinates47.08550, -108.29650

Physical Characteristics

Dam TypeEarth
NID Height19 ft
Dam Height19 ft
Dam Length680 ft
Year Completed1971 (55 years old)

Storage & Hydraulics

NID Storage129 acre-ft
Max Storage129 acre-ft
Normal Storage96 acre-ft
Drainage Area1 sq mi
Max Discharge1,000 cfs

Ownership & Safety

PurposeIrrigation
OwnerHANS MARKS
Owner TypePrivate
Hazard ClassificationLow
Emergency Action PlanNot Required

Identifiers

NID IDMT02253
Federal IDMT02253
More InfoState Dam Safety Program

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