Deer Lodge Sewage Lagoon

Deer Lodge Sewage Lagoon is an earth dam located in Powell 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
Height8 ft
Built196066 years ago

Dam profile

NID height · 8 ft
8 FT TWO-STORY HOUSEMEDIAN U.S. DAM · 24 FT

8 ft tall and 1,500 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 Deer Lodge Sewage Lagoon

Deer Lodge Sewage Lagoon is a dam in Powell, Montana. The dam is owned by City of Deer Lodge (local government). It impounds the Tr-clark Fork near Deer Lodge.

The dam stands 8 feet tall and stretches 1,500 feet across, and has a maximum storage capacity of 98 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
CountyPowell
Nearest CityDeer Lodge
River/StreamTr-clark Fork
Coordinates46.42760, -112.74090

Physical Characteristics

Dam TypeEarth
NID Height8 ft
Dam Height8 ft
Dam Length1,500 ft
Year Completed1960 (66 years old)

Storage & Hydraulics

NID Storage98 acre-ft
Max Storage98 acre-ft
Normal Storage98 acre-ft

Ownership & Safety

PurposeOther
OwnerCity of Deer Lodge
Owner TypeLocal Government
Hazard ClassificationLow
Condition AssessmentNot assessed
Emergency Action PlanNot Required

Identifiers

NID IDMT01421
Federal IDMT01421
More InfoState Dam Safety Program