Floating Rib

Floating Rib is an earth dam located in Pondera County, Montana, built in 1920. It carries a Low hazard potential classification.

About Floating Rib

The primary purpose of Floating Rib 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 William Judisch Et_al (private). It impounds the Miller Ditch near Dupuyer.

The dam stands 20 feet tall and stretches 150 feet across, and has a maximum storage capacity of 76 acre-feet. Completed in 1920, the structure is over a century 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
CountyPondera
Nearest CityDupuyer
River/StreamMiller Ditch
Coordinates48.16000, -112.76790

Physical Characteristics

Dam TypeEarth
NID Height20 ft
Dam Height20 ft
Dam Length150 ft
Year Completed1920 (106 years old)

Storage & Hydraulics

NID Storage76 acre-ft
Max Storage76 acre-ft
Normal Storage32 acre-ft

Ownership & Safety

PurposeFire Protection, Stock, Or Small Fish Pond
OwnerWILLIAM JUDISCH ET_AL
Owner TypePrivate
Hazard ClassificationLow
Emergency Action PlanNot Required

Identifiers

NID IDMT03498
Federal IDMT03498
More InfoState Dam Safety Program

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