Allen #6 is an earth dam located in Powder River County, Montana, built in 1960. It carries a Low hazard potential classification.

Hazard potentialLowFailure would cause limited damage
ConditionNot assessed
Emergency action planNot reported
Last inspectionNot reported
Height23 ft
Built196066 years ago

Dam profile

NID height · 23 ft
23 FT TWO-STORY HOUSEMEDIAN U.S. DAM · 24 FT

23 ft tall and 250 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.

About Allen #6

The primary purpose of Allen #6 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 Allen Brothers Inc (private). It impounds the Tr-s L Creek near Miles City.

The dam stands 23 feet tall and stretches 250 feet across, and has a maximum storage capacity of 56 acre-feet. Completed in 1960, 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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Location

StateMontana
CountyPowder River
Nearest CityMiles City
River/StreamTr-s L Creek
Coordinates45.77750, -105.65670

Physical Characteristics

Dam TypeEarth
NID Height23 ft
Dam Height23 ft
Dam Length250 ft
Year Completed1960 (66 years old)

Storage & Hydraulics

NID Storage56 acre-ft
Max Storage56 acre-ft
Normal Storage27 acre-ft

Ownership & Safety

PurposeFire Protection, Stock, Or Small Fish Pond
OwnerAllen Brothers Inc
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot assessed
Emergency Action PlanNot Required

Identifiers

NID IDMT01825
Federal IDMT01825
More InfoState Dam Safety Program