Where is Rainbow Lake?

Rainbow Lake is a lake in Shasta County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.

Rainbow Lake

Shasta County, California92 acresView map Directions

SWRCB publishes the water-quality measurements for Rainbow Lake. Here is what has been measured.

Chlorophyll-a

1.3 µg/L

Less algae than most

Measured by SWRCB

Area

92 acres

Surface area

Shoreline

2.7 mi

Measured length

Limited data

See the measurements Directions Where to stay

Rainbow Lake in Shasta County, California has water-quality measurements published by SWRCB, shown here as reported. Chlorophyll-a (algae): 1.3 µg/L. Surface area: 92 acres.

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Rainbow Lake is a 92-acre lake in Shasta County, California.

Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2017-06-20. Methodology: how these readings are compared.

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Rainbow 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.

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Water quality measurements for Rainbow Lake

These are the measurements SWRCB publishes for Rainbow 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. Chlorophyll-a 1.3 µg/L.

Water quality readings
Measure	Reading	Where it sits
Water clarity (Secchi depth)		No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer.
Total phosphorus		No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential.
Chlorophyll-a (algae)	1.3µg/L	Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water.

Ask about Rainbow Lake

Answers come straight from the public measurements and survey records on this page.

Lake Details

Surface area

92 acres

Shoreline

2.7 mi

No bathymetric survey has been published for Rainbow Lake, so its depth is not documented here.

Stays via Stay22

Stays near Rainbow Lake

Compare lakeside cabins, hotels, and vacation rentals near Rainbow Lake in Shasta 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 Rainbow Lake

Prices for Oct 16–18, 4 adults. Change dates on the map below.

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Fishing Rainbow Lake

→ Rainbow Lake fishing regulations (limits, seasons, special rules)

Nearby Lakes in Shasta County

Whiskeytown Lake10.7 miView →Spring Creek Reservoir14.1 miView →Keswick Reservoir15.2 miView →Shasta Lake—View →Woodridge Lake—View →Pit Six Reservoir—View →

Frequently asked questions about Rainbow Lake

Where is Rainbow Lake?: Rainbow Lake is a lake in Shasta County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.
What is the water quality of Rainbow Lake?: Rainbow Lake in Shasta County, California has water-quality measurements published by SWRCB, shown here as reported. Chlorophyll-a (algae): 1.3 µg/L. Surface area: 92 acres.
Is Rainbow Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.