Dreves is an earth dam located in Yellowstone County, Montana, built in 1938. It carries a Significant hazard potential classification.

About Dreves

The primary purpose of Dreves 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 Oreves Farming Corp (private). It impounds the Coulee.

The dam stands 39 feet tall and stretches 700 feet across, and has a maximum storage capacity of 170 acre-feet. Completed in 1938, the structure is well-established, with more than 75 years of service.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life.

At 39 feet, this dam is taller than 86% of dams nationwide.

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Significant Hazard ConditionEmergency Action Plan: Not Required

Location

StateMontana
CountyYellowstone
Nearest CityNone
River/StreamCoulee
Coordinates46.03940, -108.70000

Physical Characteristics

Dam TypeEarth
NID Height39 ft
Dam Height39 ft
Dam Length700 ft
Year Completed1938 (88 years old)

Storage & Hydraulics

NID Storage170 acre-ft
Max Storage170 acre-ft
Normal Storage150 acre-ft

Ownership & Safety

PurposeFire Protection, Stock, Or Small Fish Pond
OwnerOREVES FARMING CORP
Owner TypePrivate
Hazard ClassificationSignificant
Emergency Action PlanNot Required

Identifiers

NID IDMT01069
Federal IDMT01069
More InfoState Dam Safety Program