Weir Pond Reservoir Report

Last Updated: December 5, 2025

Weir Pond, located in Sheridan, Wyoming, is a privately-owned concrete dam built in 1969 for irrigation purposes on the West Fork Big Goose Creek.


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Summary

The dam has a height of 8 feet and a hydraulic height of 3 feet, with a storage capacity of 131 acre-feet. Despite its low hazard potential, the dam is classified as having a poor condition assessment as of its last inspection in September 2019.

With a spillway width of 16 feet and an uncontrolled spillway type, Weir Pond has a surface area of 14 acres and a drainage area of 0. The dam is equipped with one slide (sluice gate) outlet gate for water release. The risk assessment for Weir Pond is moderate, indicating some potential concerns for its operation and maintenance.

Water resource and climate enthusiasts interested in Weir Pond can appreciate its role in providing irrigation water to the surrounding area, while also recognizing the need for regular inspections and maintenance to ensure its continued safety and functionality. The unique design features of the dam, coupled with its location in a picturesque setting, make Weir Pond a notable site for those interested in water infrastructure and management in Wyoming.

Year Completed

1969

Dam Length

150

Dam Height

8

River Or Stream

WEST FORK BIG GOOSE CREEK

Primary Dam Type

Concrete

Surface Area

14

Hydraulic Height

3

Nid Storage

131

Structural Height

8

Outlet Gates

Slide (sluice gate) - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

8
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.