Duck Creek Lower Detention Dam Reservoir Report
Last Updated: December 6, 2025
Duck Creek Lower Detention Dam, located in Las Vegas, Nevada, is a key structure owned by the local government to manage flood risk along the Las Vegas Wash-TR.
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Summary
Designed by Montgomery Watson and completed in 1999, this earth dam stands at 30 feet high with a hydraulic height of 22 feet. It has a storage capacity of 1050 acre-feet and covers a surface area of 65 acres, serving as a critical flood risk reduction measure in the region.
With a spillway width of 414 feet and uncontrolled outlet gates, Duck Creek Lower Detention Dam has a high hazard potential but is currently assessed to be in fair condition as of the last inspection in October 2021. While the dam is regulated and permitted by the Nevada Division of Water Resources, it is important to note that it has not undergone any modifications in recent years. Despite the moderate risk associated with this structure, the local government and relevant agencies have not prepared an Emergency Action Plan meeting guidelines, highlighting the need for further risk management measures to ensure the safety and resilience of the dam in the face of potential emergencies.
Enthusiasts interested in water resources and climate adaptation will find Duck Creek Lower Detention Dam to be a fascinating case study of flood risk reduction infrastructure in a dynamic urban environment. As climate change continues to pose challenges to water management systems, the maintenance and operation of structures like Duck Creek Lower Detention Dam will be crucial in safeguarding communities against the increasing threat of extreme weather events and flooding in the region.
Year Completed |
1999 |
Dam Length |
3550 |
Dam Height |
30 |
River Or Stream |
LAS VEGAS WASH-TR |
Primary Dam Type |
Earth |
Surface Area |
65 |
Hydraulic Height |
22 |
Drainage Area |
136 |
Nid Storage |
1050 |
Structural Height |
30 |
Outlet Gates |
Uncontrolled - 3 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
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