East C-1 Detention Basin Dam Reservoir Report

Last Updated: December 5, 2025

The East C-1 Detention Basin Dam, located in Henderson, Nevada, is a vital piece of infrastructure designed for flood risk reduction along the Las Vegas Wash-TR.


°F

°F

mph

Wind

%

Humidity

Summary

Constructed in 2000 by VTN NEVADA, this earth dam stands at a height of 65 feet with a hydraulic height of 55 feet, providing a critical line of defense against high hazard potential. With a storage capacity of 1414 acre-feet and a surface area of 48.2 acres, this dam plays a crucial role in safeguarding the surrounding area from potential flooding events.

Despite its fair condition assessment as of October 2021, the East C-1 Detention Basin Dam is subject to regular inspections and state regulation by the Nevada Division of Water Resources. With a high hazard potential and moderate risk assessment rating, this dam remains a top priority for maintenance and risk management measures. The dam's uncontrolled spillway, measuring 200 feet in width, ensures efficient water discharge during peak flow events, further enhancing its flood risk reduction capabilities.

Congressional District 03, represented by Susie Lee, oversees the East C-1 Detention Basin Dam, emphasizing the importance of federal-state collaboration in managing water resources and climate-related challenges. With its strategic location and structural design, this dam serves as a crucial asset in protecting the community and environment against the impacts of extreme weather events, highlighting the intersection of infrastructure, water resource management, and climate resilience in the region.

Year Completed

2000

Dam Length

1050

Dam Height

65

River Or Stream

LAS VEGAS WASH-TR

Primary Dam Type

Earth

Surface Area

48.2

Hydraulic Height

55

Drainage Area

5.3

Nid Storage

1414

Structural Height

65

Outlet Gates

Uncontrolled - 1

Hazard Potential

High

Foundations

Soil

Nid Height

65
       
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.