Lakes / Nevada / Humboldt County / Onion Valley Reservoir
Onion Valley Reservoir, Nevada
64 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Nevada
41.69 degrees N, 118.74 degrees W - Humboldt County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.
How Onion Valley Reservoir Stacks Up
- Larger than 25% of the 203 lakes counted in Nevada.
- About 160 miles from Reno, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Little Onion Reservoir | Humboldt | 1.1 mi | 36 acres |
| Knott Creek Reservoir | Humboldt | 3.2 mi | 90 acres |
| Gridley Lake | Humboldt | 6.9 mi | 262 acres |
| Continental Lake | Humboldt | 14 mi | 1,427 acres |
| Dry Lake | Humboldt | 15 mi | 31 acres |
| Onion Lake | Humboldt | 15 mi | 35 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Onion Valley Reservoir
How Big Is Onion Valley Reservoir?
Onion Valley Reservoir covers 64 acres in Humboldt County, Nevada.
What Is the Largest Lake in Humboldt County?
Chimney Reservoir is the largest lake in Humboldt County, at 2,190 acres.
Largest Lakes in Nevada
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Mead | Clark | 133,758 acres | - |
| 2 | Pyramid Lake | Washoe | 108,982 acres | - |
| 3 | Walker Lake | Mineral | 29,655 acres | - |
| 4 | Rye Patch Reservoir | Pershing | 11,474 acres | - |
| 5 | Lahontan Reservoir | Lyon | 9,999 acres | - |
All 203 Nevada lakes ranked by surface area
Sources: USGS NHD (The National Map NHD MapServer layer 12) named waterbodies FTYPE 390/436; counties via Census point-in-polygon lake data (ID 153058263). Verified October 30, 2026.