Upper Letts Lake
Colusa County, California34 acresView mapDirections
No nutrient or algae sampling on record from SWRCB for this lake.
Upper Letts Lake in Colusa County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 34 acres.
Upper Letts Lake is a 34-acre lake in Colusa County, California.
Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.
What Upper Letts Lake is good for
From access and monitoring records, not editorial picks.
- Camping8 public campgrounds nearby
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Upper Letts Lake is safe to swim in today is a call for the California State Water Resources Control Board and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Upper Letts Lake
These are the measurements SWRCB publishes for Upper Letts 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 Upper Letts Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
34 acres
Shoreline
1.2 mi
No bathymetric survey has been published for Upper Letts Lake, so its depth is not documented here.
Recreation & Access
Public campgrounds near Upper Letts Lake
- Saddle Camp Loop C.G.0.3 km
- Stirrup C.G. (letts Lake)0.5 km
- Main Letts C.G.0.5 km
- Spillway C.G. (letts Lake)0.5 km
- Letts Lake Campground0.5 km
- Mill Valley1.5 km
- Dixie Glade Campground3.5 km
- Cedar Camp4.8 km
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
Stays via Stay22
Stays near Upper Letts Lake
Compare lakeside cabins, hotels, and vacation rentals near Upper Letts Lake in Colusa County, California — 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 Upper Letts Lake
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Fishing Upper Letts Lake
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Frequently asked questions about Upper Letts Lake
Where is Upper Letts Lake?
- Upper Letts Lake is a lake in Colusa County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.
What is the water quality of Upper Letts Lake?
- Upper Letts Lake in Colusa County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 34 acres.
Is Upper Letts Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there campgrounds on Upper Letts Lake?
- Upper Letts Lake has 8 public campgrounds from USGS The National Map within 5 km, including Saddle Camp Loop C.G., Stirrup C.G. (letts Lake), Main Letts C.G., Spillway C.G. (letts Lake). This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
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Where this data comes from
Measurements for Upper Letts Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Public campgrounds from USGS The National Map Structures, within about 3 miles