Reeves No. 1 Reservoir Report

Last Updated: December 5, 2025

Reeves No.


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Summary

1 is a privately owned Earth dam located on Thurston Draw in Park, Wyoming. Built in 1985 by designer Roy R Holm, this dam serves a primary purpose of Fish and Wildlife Pond, with additional uses for Fire Protection, Stock, Irrigation, and Small Fish Pond. With a height of 75 feet and a hydraulic height of 70 feet, Reeves No. 1 spans 360 feet in length and has a storage capacity of 26 acre-feet.

Despite its low hazard potential and fair condition assessment, Reeves No. 1 is subject to state regulation, inspection, and enforcement by the SEO agency in Wyoming. This dam features an uncontrolled spillway with a width of 20 feet and has a maximum discharge capacity of 147 cubic feet per second. The surrounding area is characterized by a moderate risk level, as indicated by the risk assessment rating of 3.

Water resource and climate enthusiasts will find Reeves No. 1 to be an interesting case study in dam infrastructure management and risk assessment. With its diverse range of purposes and state oversight, this dam presents a unique opportunity to explore the intersection of water resource management, environmental conservation, and public safety in the context of a Fish and Wildlife Pond in Wyoming.

Year Completed

1985

Dam Length

360

Dam Height

75

River Or Stream

THURSTON DRAW

Primary Dam Type

Earth

Surface Area

2

Hydraulic Height

70

Nid Storage

26

Structural Height

70

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

75
       
Seasonal Comparison

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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.