Non Potable Reservoir Dam 3 Reservoir Report

Last Updated: December 5, 2025

Non Potable Reservoir Dam 3, located in Colorado Springs, is a federal-owned structure designed by S.A.


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Summary

MIRO, SKIDMORE, OWINGS, AND MERRILL. The dam, completed in 1961, stands at a height of 50 feet and serves primarily for irrigation purposes, with a storage capacity of 70 acre-feet. Situated on TR-MONUMENT CR - OFFSTREAM, the dam has a spillway width of 20 feet and a maximum discharge of 1450 cubic feet per second.

Managed by the US Air Force, Non Potable Reservoir Dam 3 is regulated by the Department of Water Resources, with state permitting, inspection, and enforcement in place. Despite a hazard potential rating of "High", the condition assessment of the dam is listed as "Not Available", highlighting the need for ongoing monitoring and risk management measures. With a surface area of 3.8 acres and a drainage area of 0.1 square miles, the dam plays a crucial role in water resource management in the region, showcasing the intersection of infrastructure, climate, and environmental stewardship.

Year Completed

1961

Dam Length

890

Dam Height

50

River Or Stream

TR-MONUMENT CR - OFFSTREAM

Primary Dam Type

Earth

Surface Area

3.8

Hydraulic Height

45

Drainage Area

0.1

Nid Storage

70

Outlet Gates

None, Uncontrolled

Hazard Potential

High

Foundations

Rock, Soil

Nid Height

50
       
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.