Onion Lake
Humboldt County, Nevada35 acresView mapDirections
No nutrient or algae sampling on record from NDEP for this lake.
Onion Lake in Humboldt County, Nevada has water-quality measurements published by NDEP, shown here as reported. Surface area: 35 acres.
Onion Lake is a 35-acre lake in Humboldt County, Nevada.
Source: EPA Water Quality Portal sampling records, NDEP. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Onion Lake is safe to swim in today is a call for the Nevada Division of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Onion Lake
These are the measurements NDEP publishes for Onion Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. TSI undefined.
Ask about Onion Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
35 acres
No bathymetric survey has been published for Onion Lake, so its depth is not documented here.
Stays via Stay22
Stays near Onion Lake
Compare lakeside cabins, hotels, and vacation rentals near Onion Lake in Humboldt County, Nevada — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Onion Lake
Prices for Oct 16–18, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Nevada’s top lakes →
Follow Onion Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Onion Lake
Nearby Lakes in Humboldt County
Frequently asked questions about Onion Lake
Where is Onion Lake?
- Onion Lake is a lake in Humboldt County, Nevada. Its water-quality measurements are published by NDEP and shown on this page as reported.
What is the water quality of Onion Lake?
- Onion Lake in Humboldt County, Nevada has water-quality measurements published by NDEP, shown here as reported. Surface area: 35 acres.
Is Onion Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Onion Lake across LakeQuality
More lakes in Nevada
Other Lakes in Nevada
Where this data comes from
Measurements for Onion Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.