Atascadero Lake
San Luis Obispo County, California27 acresView mapDirections
No nutrient or algae sampling on record from SWRCB for this lake.
Atascadero Lake in San Luis Obispo County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 27 acres.
Atascadero Lake is a 27-acre lake in San Luis Obispo County, California.
Source: EPA Water Quality Portal sampling records, your state environmental agency. 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 Atascadero 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 Atascadero Lake
These are the measurements SWRCB publishes for Atascadero 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 Atascadero Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
27 acres
Shoreline
1.1 mi
No bathymetric survey has been published for Atascadero Lake, so its depth is not documented here.
Stays via Stay22
Stays near Atascadero Lake
Compare lakeside cabins, hotels, and vacation rentals near Atascadero Lake in San Luis Obispo 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 Atascadero 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.
Follow Atascadero Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Atascadero Lake
Nearby Lakes in San Luis Obispo County
Frequently asked questions about Atascadero Lake
Where is Atascadero Lake?
- Atascadero Lake is a lake in San Luis Obispo County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.
What is the water quality of Atascadero Lake?
- Atascadero Lake in San Luis Obispo County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 27 acres.
Is Atascadero Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Atascadero Lake across LakeQuality
More lakes in California
Other Lakes in California
Where this data comes from
Measurements for Atascadero Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.