Best Rocky Twist

Best Rocky Twist is an earth dam located in Blaine County, Montana, built in 1965. It carries a Low hazard potential classification.

About Best Rocky Twist

The primary purpose of Best Rocky Twist 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 Martha Listou (private). It impounds the Tr-lodge Creek near Chinook.

The dam stands 20 feet tall and stretches 400 feet across, and has a maximum storage capacity of 62 acre-feet. Completed in 1965, 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
CountyBlaine
Nearest CityChinook
River/StreamTr-lodge Creek
Coordinates48.79620, -109.41590

Physical Characteristics

Dam TypeEarth
NID Height20 ft
Dam Height20 ft
Dam Length400 ft
Year Completed1965 (61 years old)

Storage & Hydraulics

NID Storage62 acre-ft
Max Storage62 acre-ft
Normal Storage32 acre-ft

Ownership & Safety

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

Identifiers

NID IDMT03568
Federal IDMT03568
More InfoState Dam Safety Program

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