Brown No. 2 Reservoir Report

Last Updated: December 5, 2025

Brown No.


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Summary

2, also known as Enl of 759r, is a private earth dam located in Bighorn, Wyoming, along Crystal Creek. Built in 1913 for irrigation purposes, this dam stands at 30 feet high with a hydraulic height of 25 feet and a length of 285 feet. It has a storage capacity of 271 acre-feet and a surface area of 19 acres, serving as a vital water resource for the surrounding area.

Despite its historical significance, Brown No. 2 has been assessed to be in poor condition, with a low hazard potential and a moderate risk level. The dam is under state regulation and inspection, with enforcement measures in place to ensure its safety and functionality. However, there are no recent records of modifications or updates, raising concerns about its long-term sustainability and resilience in the face of changing climate patterns.

With Liz Cheney (R) representing Congressional District 00, Wyoming, where Brown No. 2 is located, it is essential for water resource and climate enthusiasts to monitor the dam's condition and advocate for necessary improvements to enhance its safety and efficiency. As climate change continues to impact water resources, proactive measures must be taken to mitigate risks and ensure the longevity of critical infrastructure like Brown No. 2.

Year Completed

1913

Dam Length

285

Dam Height

30

River Or Stream

CRYSTAL CREEK

Primary Dam Type

Earth

Surface Area

19

Hydraulic Height

25

Nid Storage

271

Structural Height

30

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

30
       
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.