Allan #2

Allan #2 is an earth dam located in Custer County, Montana, built in 1955. It carries a Low hazard potential classification.

About Allan #2

The primary purpose of Allan #2 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 Diamond Two Ranch (private). It impounds the Broughton Creek near Miles City.

The dam stands 24 feet tall and stretches 594 feet across, and has a maximum storage capacity of 79 acre-feet. Completed in 1955, 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/StreamBroughton Creek
Coordinates45.90020, -105.65200

Physical Characteristics

Dam TypeEarth
NID Height24 ft
Dam Height24 ft
Dam Length594 ft
Year Completed1955 (71 years old)

Storage & Hydraulics

NID Storage79 acre-ft
Max Storage79 acre-ft
Normal Storage37 acre-ft

Ownership & Safety

PurposeFire Protection, Stock, Or Small Fish Pond
OwnerDIAMOND TWO RANCH
Owner TypePrivate
Hazard ClassificationLow
Emergency Action PlanNot Required

Identifiers

NID IDMT01205
Federal IDMT01205
More InfoState Dam Safety Program

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