Gibbons No. 1

Gibbons No. 1 is an earth dam located in Campbell County, Wyoming, built in 1962. It carries a Low hazard potential classification and has a fair condition assessment.

About Gibbons No. 1

The primary purpose of Gibbons No. 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 Donald R. & Mary Jo Joslyn Rev. Trusts (private). It impounds the Gibbons Draw near Powderville.

The dam stands 29 feet tall and stretches 310 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 96 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1962, 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 04/24/2024.

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Low HazardFair ConditionEmergency Action Plan: Not Required

Location

StateWyoming
CountyCampbell
Nearest CityPowderville
River/StreamGibbons Draw
Coordinates44.61000, -105.76500

Physical Characteristics

Dam TypeEarth
NID Height29 ft
Dam Height29 ft
Dam Length310 ft
Year Completed1962 (64 years old)

Storage & Hydraulics

NID Storage96 acre-ft
Max Storage96 acre-ft
Normal Storage51 acre-ft
Surface Area7 acres
Drainage Area1 sq mi

Ownership & Safety

PurposeFire Protection, Stock, Or Small Fish Pond
OwnerDONALD R. & MARY JO JOSLYN REV. TRUSTS
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentFair
Last Inspection04/24/2024
Emergency Action PlanNot Required

Identifiers

NID IDWY00992
Federal IDWY00992
More InfoState Dam Safety Program

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