Roundhill Effluent Dam
Roundhill Effluent Dam is an earth dam located in Douglas County, Nevada. It carries a High hazard potential classification and has a fair condition assessment.
About Roundhill Effluent Dam
Roundhill Effluent Dam is a dam in Douglas, Nevada. The dam is owned by Douglas County Sewer Improvement District #1 (local government). It impounds the Lake Tahoe-tr near Roundhill.
The dam stands 90 feet tall and stretches 520 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 160 acre-feet, and collects water from a drainage area of 0 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 09/13/2023.
At 90 feet, this dam is taller than 98% of all dams in the United States.
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 | Douglas |
| Nearest City | Roundhill |
| River/Stream | Lake Tahoe-tr |
| Coordinates | 38.98500, -119.92420 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 90 ft |
| Dam Height | 80 ft |
| Dam Length | 520 ft |
Storage & Hydraulics
| NID Storage | 160 acre-ft |
| Max Storage | 160 acre-ft |
| Normal Storage | 160 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 700 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | DOUGLAS COUNTY SEWER IMPROVEMENT DISTRICT #1 |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 09/13/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NV00084 |
| Federal ID | NV00084 |
| More Info | State Dam Safety Program |