Haymes Storage Reservoir Report

Last Updated: December 5, 2025

Haymes Storage, located in Fountain, Colorado, is a federally-owned dam managed by the US Army primarily for recreational purposes.


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Summary

Built in 1887, this earth dam on Rock Creek stands at 20 feet high with a storage capacity of 160 acre-feet. Despite its age, the dam has a low hazard potential and a moderate risk assessment rating, indicating a stable and well-maintained structure.

With a spillway width of 1 foot and uncontrolled spillway type, Haymes Storage is designed to handle overflow efficiently. The dam's condition assessment is currently not available, but it undergoes inspections every four years to ensure safety and reliability. Although the drainage area is listed as zero, the reservoir provides fire protection, stock watering, and small fish pond functions in addition to its recreational use.

Overall, Haymes Storage serves as a vital water resource in El Paso County, providing essential services while also offering a picturesque recreational area for visitors to enjoy. Its historical significance, combined with its modern maintenance practices, showcases a commitment to preserving and utilizing water resources in a sustainable and responsible manner.

Year Completed

1887

Dam Length

1500

Dam Height

20

River Or Stream

Rock Creek

Primary Dam Type

Earth

Surface Area

3

Hydraulic Height

22

Nid Storage

160

Structural Height

20

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

22
       
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.