Jewell Wetland Detention Reservoir Report

Last Updated: December 5, 2025

Located in Aurora, Colorado, Jewell Wetland Detention is a state-regulated flood risk reduction structure designed by ICON Engineering.


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Summary

Completed in 2000, this earth dam stands at a height of 14 feet and spans 1680 feet along Westerly Creek-TR. With a primary purpose of flood risk reduction, the dam also serves as a fish and wildlife pond, showcasing its environmental benefits in addition to its flood control capabilities.

With a normal storage capacity of 1 acre-foot and a maximum storage of 55 acre-feet, Jewell Wetland Detention plays a crucial role in managing stormwater and reducing flood risks in the Arapahoe County area. Despite its low hazard potential, the dam is inspected every 6 years to ensure its satisfactory condition. The structure features an uncontrolled spillway with a width of 99 feet, providing a controlled release of excess water during heavy rainfall events.

As a key component of the local government's flood management strategy, Jewell Wetland Detention not only contributes to flood risk reduction but also enhances the area's ecological diversity. With its strategic location and effective design, this wetland detention structure exemplifies the harmonious integration of water resource management and climate resilience efforts in the region.

Year Completed

2000

Dam Length

1680

Dam Height

14

River Or Stream

WESTERLY CREEK-TR

Primary Dam Type

Earth

Surface Area

19

Hydraulic Height

11

Nid Storage

55

Structural Height

21

Hazard Potential

Low

Foundations

Soil

Nid Height

21
       
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.