Skip to main content
LakeQuality

Tunnel Reservoir

Shasta County, California33 acresView mapDirections

No nutrient or algae sampling on record from SWRCB for this lake.

Area
33 acres
Surface area
Shoreline
1.5 mi
Measured length
  • Limited data

Tunnel Reservoir in Shasta County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 33 acres.

Loading map…

Tunnel Reservoir is a 33-acre lake in Shasta County, California.

Source: EPA Water Quality Portal sampling records, your state environmental agency. 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 Tunnel 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.

Get alerts for Tunnel Reservoir →

Water quality measurements for Tunnel Reservoir

These are the measurements SWRCB publishes for Tunnel 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.

Ask about Tunnel Reservoir

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

Lake Details

Surface area

33 acres

Shoreline

1.5 mi

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

Stays via Stay22

Stays near Tunnel Reservoir

Compare lakeside cabins, hotels, and vacation rentals near Tunnel Reservoir 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 Tunnel Reservoir

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 Tunnel Reservoir’s readings

Email me when new measurements post for this lake. Updates stay free.


Or email

Fishing Tunnel Reservoir

Nearby Lakes in Shasta County

Frequently asked questions about Tunnel Reservoir

Where is Tunnel Reservoir?

Tunnel Reservoir 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 Tunnel Reservoir?

Tunnel Reservoir in Shasta County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 33 acres.

Measurements on this page ↑

Is Tunnel Reservoir safe to swim in?

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

Swimming on this page ↑

Where this data comes from

Measurements for Tunnel Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.