North Catamount Reservoir Report

Last Updated: December 4, 2025

North Catamount is a captivating earth dam located in Teller, Colorado, specifically in the city of Green Mountain Falls.


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Summary

Built in 1959 by BLACK & VEATCH, this dam stands at a height of 210 feet and stretches 1300 feet in length, creating a reservoir with a storage capacity of 15,050 acre-feet. Its primary purpose is water supply, serving as a vital resource for the local community and surrounding areas.

With a high hazard potential and a satisfactory condition assessment as of June 2020, North Catamount is regulated by the Colorado Department of Water Resources (DWR) and undergoes regular inspections, permitting, and enforcement to ensure its safety and functionality. The dam is situated on North Catamount Creek, with a drainage area of 6 square miles and a maximum discharge capacity of 5,854 cubic feet per second. It features an uncontrolled spillway, valve outlet gates, and a stone core structure, contributing to its hydraulic height of 205 feet and surface area of 269 acres.

As a key component of the local water infrastructure, North Catamount plays a crucial role in water resource management and climate resilience efforts in the region. Its strategic location and design elements make it a noteworthy structure for water resource and climate enthusiasts, showcasing the importance of sustainable dam operations and maintenance for community water supply needs.

Year Completed

1959

Dam Length

1300

Dam Height

200

River Or Stream

NORTH CATAMOUNT CREEK

Primary Dam Type

Earth

Surface Area

269

Hydraulic Height

205

Drainage Area

6

Nid Storage

15050

Structural Height

210

Outlet Gates

Valve

Hazard Potential

High

Nid Height

210
       
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.