Foster No. 1 Dam 1a (2nd Enl.)

Foster No. 1 Dam 1a (2nd Enl.) is an earth dam located in Park County, Wyoming, built in 1953. It carries a Low hazard potential classification and has a poor condition assessment.

About Foster No. 1 Dam 1a (2nd Enl.)

The primary purpose of Foster No. 1 Dam 1a (2nd Enl.) is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Hoodoo Land Holdings, Llc (private). It impounds the Sage Creek near Byron.

The dam stands 24 feet tall and stretches 465 feet across, creates a reservoir covering 40 acres, and has a maximum storage capacity of 783 acre-feet. Completed in 1953, 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. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 08/15/2024.

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Low HazardPoor ConditionEmergency Action Plan: Not Required

Location

StateWyoming
CountyPark
Nearest CityByron
River/StreamSage Creek
Coordinates44.28139, -109.18778

Physical Characteristics

Dam TypeEarth
NID Height24 ft
Dam Height24 ft
Dam Length465 ft
Year Completed1953 (73 years old)

Storage & Hydraulics

NID Storage783 acre-ft
Max Storage783 acre-ft
Normal Storage573 acre-ft
Surface Area40 acres
Spillway TypeUncontrolled

Ownership & Safety

PurposeIrrigation
OwnerHOODOO LAND HOLDINGS, LLC
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentPoor
Last Inspection08/15/2024
Emergency Action PlanNot Required

Identifiers

NID IDWY01158
Federal IDWY01158
More InfoState Dam Safety Program

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