Buffalo No.1 Detention Dam

Buffalo No.1 Detention Dam is a gravity dam located in Washakie County, Wyoming, built in 2003. It carries a Low hazard potential classification and has a unsatisfactory condition assessment.

About Buffalo No.1 Detention Dam

The primary purpose of Buffalo No.1 Detention Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Doi Blm (federal). It impounds the Buffalo Creek Nowood River near Tensleep Wy.

The dam stands 33 feet tall and stretches 412 feet across, creates a reservoir covering 28 acres, has a maximum storage capacity of 372 acre-feet, and collects water from a drainage area of 7,900 square miles. Completed in 2003, the structure is relatively new.

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. Its condition is rated unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. The most recent inspection on record was 08/01/2016.

At 33 feet, this dam is taller than 78% of dams nationwide.

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Low HazardUnsatisfactory ConditionEmergency Action Plan: Not Required

Location

StateWyoming
CountyWashakie
Nearest CityTensleep Wy
River/StreamBuffalo Creek Nowood River
Coordinates43.82120, -107.53602

Physical Characteristics

Dam TypeGravity
NID Height33 ft
Dam Length412 ft
Year Completed2003 (23 years old)

Storage & Hydraulics

NID Storage372 acre-ft
Max Storage372 acre-ft
Normal Storage313 acre-ft
Surface Area28 acres
Drainage Area7,900 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeWater Supply
OwnerDOI BLM
Owner TypeFederal
Hazard ClassificationLow
Condition AssessmentUnsatisfactory
Last Inspection08/01/2016
Emergency Action PlanNot Required

Identifiers

NID IDWY01404
Federal IDWY01404
More InfoState Dam Safety Program

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