Mc Lean #1

Mc Lean #1 is an earth dam located in Custer County, Montana, built in 1957. It carries a Low hazard potential classification.

About Mc Lean #1

The primary purpose of Mc Lean #1 is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Mc Lean (private). It impounds the Tr-moon Creek near Miles City.

The dam stands 12 feet tall and stretches 300 feet across, and has a maximum storage capacity of 69 acre-feet. Completed in 1957, 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
CountyCuster
Nearest CityMiles City
River/StreamTr-moon Creek
Coordinates46.17990, -106.01310

Physical Characteristics

Dam TypeEarth
NID Height12 ft
Dam Height12 ft
Dam Length300 ft
Year Completed1957 (69 years old)

Storage & Hydraulics

NID Storage69 acre-ft
Max Storage69 acre-ft
Normal Storage17 acre-ft

Ownership & Safety

PurposeFire Protection, Stock, Or Small Fish Pond
OwnerMC LEAN
Owner TypePrivate
Hazard ClassificationLow
Emergency Action PlanNot Required

Identifiers

NID IDMT01661
Federal IDMT01661
More InfoState Dam Safety Program

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