Telephone Flat Reservoir
Modoc County, California448 acresView mapDirections
No nutrient or algae sampling on record from SWRCB for this lake.
Telephone Flat Reservoir in Modoc County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 448 acres.
Telephone Flat Reservoir is a 448-acre lake in Modoc 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 Telephone Flat Reservoir 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 Telephone Flat Reservoir
These are the measurements SWRCB publishes for Telephone Flat Reservoir, 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.
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Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
448 acres
Shoreline
5.4 mi
No bathymetric survey has been published for Telephone Flat Reservoir, so its depth is not documented here.
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Frequently asked questions about Telephone Flat Reservoir
Where is Telephone Flat Reservoir?
- Telephone Flat Reservoir is a lake in Modoc County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.
What is the water quality of Telephone Flat Reservoir?
- Telephone Flat Reservoir in Modoc County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 448 acres.
Is Telephone Flat Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
Measurements for Telephone Flat Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.