Sand Draw No. 1 Dam

Sand Draw No. 1 Dam is a gravity dam located in Natrona County, Wyoming, built in 1961. It carries a Low hazard potential classification.

About Sand Draw No. 1 Dam

The primary purpose of Sand Draw No. 1 Dam is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by Doi Blm (federal). It impounds the Sand Draw.

The dam stands 34 feet tall and stretches 460 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 29 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1961, 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. The most recent inspection on record was 07/18/2017.

At 34 feet, this dam is taller than 80% of dams nationwide.

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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateWyoming
CountyNatrona
River/StreamSand Draw
Coordinates42.51683, -106.40054

Physical Characteristics

Dam TypeGravity
NID Height34 ft
Dam Length460 ft
Year Completed1961 (65 years old)

Storage & Hydraulics

NID Storage34 acre-ft
Max Storage29 acre-ft
Normal Storage34 acre-ft
Surface Area4 acres
Drainage Area0 sq mi
Max Discharge1,100 cfs

Ownership & Safety

PurposeDebris Control
OwnerDOI BLM
Owner TypeFederal
Hazard ClassificationLow
Condition AssessmentNot Rated
Last Inspection07/18/2017
Emergency Action PlanNot Required

Identifiers

NID IDWY01448
Federal IDWY01448
More InfoState Dam Safety Program

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