Haywire No. 1 Reservoir Report

Last Updated: December 13, 2025

Haywire No.


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Summary

1 is a private irrigation dam located in Converse, Wyoming, near the city of Douglas. Built in 1986, this earth dam stands at a height of 26 feet and has a maximum storage capacity of 119 acre-feet. The dam serves the primary purpose of irrigation and is designed to control the flow of the Dry Fork Sand Creek and Tr No Platte River.

With a fair condition assessment and low hazard potential, Haywire No. 1 poses a moderate risk, indicating the need for ongoing monitoring and maintenance. The dam features an uncontrolled spillway with a width of 100 feet and has a drainage area of 2.8 square miles. Despite its relatively small size, Haywire No. 1 plays a crucial role in water resource management in the region.

Managed by the State of Wyoming, this dam undergoes regular inspections and has a designated emergency action plan. As climate change continues to impact water resources, structures like Haywire No. 1 play a vital role in ensuring reliable water supply for agricultural activities in the area. Climate and water resource enthusiasts will find this dam's design and function intriguing, highlighting the intersection of engineering and environmental stewardship.

Year Completed

1986

Dam Length

800

Dam Height

26

River Or Stream

DRY FK SAND CR, TR NO PLATTE R

Primary Dam Type

Earth

Surface Area

12

Hydraulic Height

20

Drainage Area

2.8

Nid Storage

119

Structural Height

26

Outlet Gates

Uncontrolled - 0

Hazard Potential

Low

Foundations

Soil

Nid Height

26
       
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.