Hundred Springs Reservoir Report

Last Updated: December 5, 2025

Hundred Springs, also known as Leazenby, is a private fish and wildlife pond located in Laramie, Wyoming.


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Summary

The dam, constructed in 1915, stands at a height of 14 feet and spans a length of 1570 feet. With a storage capacity of 213 acre-feet, the dam serves as a vital resource for the surrounding area, providing water for wildlife and recreational purposes.

Despite its historical significance, the dam at Hundred Springs is facing challenges with a poor condition assessment and a high risk potential. With the last inspection conducted in June 2021, the structure requires immediate attention to ensure its safety and longevity. The risk assessment categorizes the dam as high risk (2), emphasizing the need for comprehensive risk management measures to safeguard the surrounding community and environment.

Water resource and climate enthusiasts should take note of Hundred Springs as a valuable yet vulnerable asset in Wyoming. With its critical role in supporting fish and wildlife populations, maintaining water quality, and providing recreational opportunities, efforts to address the dam's deteriorating condition are essential to ensure its continued functionality and resilience in the face of changing environmental conditions.

Year Completed

1915

Dam Length

1570

Dam Height

14

River Or Stream

SPRINGS, TRIB. OF HARNEY CREEK

Primary Dam Type

Earth

Surface Area

32

Hydraulic Height

12

Nid Storage

213

Structural Height

14

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

14
       
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.