D'andrea Detention Basin #1 Dam
D'andrea Detention Basin #1 Dam is an earth dam located in Washoe County, Nevada. It carries a High hazard potential classification and has a fair condition assessment.
About D'andrea Detention Basin #1 Dam
The primary purpose of D'andrea Detention Basin #1 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 D'andrea Nevada Llc (private). It impounds the North Truckee Drain-tr near Sparks.
The dam stands 25 feet tall and stretches 1,160 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 71 acre-feet, and collects water from a drainage area of 1 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 05/17/2023.
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 | Washoe |
| Nearest City | Sparks |
| River/Stream | North Truckee Drain-tr |
| Coordinates | 39.55500, -119.69200 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 21 ft |
| Dam Length | 1,160 ft |
Storage & Hydraulics
| NID Storage | 71 acre-ft |
| Max Storage | 71 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,154 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | D'ANDREA NEVADA LLC |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 05/17/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NV10818 |
| Federal ID | NV10818 |
| More Info | State Dam Safety Program |