East Side Detention Facility Reservoir Report

Last Updated: December 5, 2025

The East Side Detention Facility, also known as ESDF, is a local government-owned structure situated in Larimer County, Colorado.


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Summary

Completed in 2016, this Earth-type dam stands at 26 feet high and spans a length of 7700 feet along Boxelder Creek. The primary purpose of this flood risk reduction infrastructure is to protect the surrounding area from potential flooding, with a storage capacity of 1836 acre-feet and a drainage area of 252 square miles.

With a high hazard potential and satisfactory condition assessment, the East Side Detention Facility is regulated by the Colorado Department of Water Resources, ensuring that it meets state permitting, inspection, and enforcement requirements. The dam features an uncontrolled spillway with a width of 900 feet, allowing for a maximum discharge of 25300 cubic feet per second. In the event of an emergency, the facility is equipped with emergency action plans to mitigate risks and protect the local community from potential inundation.

Overall, the East Side Detention Facility plays a crucial role in managing flood risks in the region, with a moderate risk assessment score of 3. Designed by Andrea Faucett, this structure exemplifies the importance of sustainable water resource management and climate resilience in safeguarding communities against the impacts of extreme weather events.

Year Completed

2016

Dam Length

7700

Dam Height

26

River Or Stream

BOXELDER CREEK

Primary Dam Type

Earth

Surface Area

118

Hydraulic Height

23

Drainage Area

252

Nid Storage

1836

Structural Height

23

Outlet Gates

Uncontrolled - 0

Hazard Potential

High

Foundations

Soil

Nid Height

26
       
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.