Las Vegas Wash Lower Detention Basin Dam
Las Vegas Wash Lower Detention Basin Dam is an earth dam located in Clark County, Nevada. It carries a High hazard potential classification and has a fair condition assessment.
About Las Vegas Wash Lower Detention Basin Dam
The primary purpose of Las Vegas Wash Lower Detention Basin Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by City Of North Las Vegas (local government). It impounds the Las Vegas Wash near North Las Vegas.
The dam stands 56 feet tall and stretches 4,200 feet across, creates a reservoir covering 40 acres, has a maximum storage capacity of 702 acre-feet, and collects water from a drainage area of 35 square miles.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 04/30/2023.
At 56 feet, this dam is taller than 94% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Nevada dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Nevada |
| County | Clark |
| Nearest City | North Las Vegas |
| River/Stream | Las Vegas Wash |
| Coordinates | 36.25500, -115.16056 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 56 ft |
| Dam Height | 53 ft |
| Dam Length | 4,200 ft |
Storage & Hydraulics
| NID Storage | 702 acre-ft |
| Max Storage | 702 acre-ft |
| Surface Area | 40 acres |
| Drainage Area | 35 sq mi |
| Max Discharge | 68,950 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | CITY OF NORTH LAS VEGAS |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 04/30/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NV10511 |
| Federal ID | NV10511 |
| More Info | State Dam Safety Program |