Harstad #1

Harstad #1 is an earth dam located in Rosebud County, Montana, built in 1968. It carries a Low hazard potential classification.

About Harstad #1

The primary purpose of Harstad #1 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 Harstad Inc (private). It impounds the Tr-living Ash Creek near Forsyth.

The dam stands 26 feet tall and stretches 360 feet across, has a maximum storage capacity of 103 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1968, 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
CountyRosebud
Nearest CityForsyth
River/StreamTr-living Ash Creek
Coordinates46.45400, -106.86960

Physical Characteristics

Dam TypeEarth
NID Height26 ft
Dam Height26 ft
Dam Length360 ft
Year Completed1968 (58 years old)

Storage & Hydraulics

NID Storage103 acre-ft
Max Storage103 acre-ft
Normal Storage67 acre-ft
Drainage Area3 sq mi
Max Discharge1,000 cfs
Spillway TypeUncontrolled

Ownership & Safety

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

Identifiers

NID IDMT00541
Federal IDMT00541
More InfoState Dam Safety Program

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