Where is Vasona Reservoir?

Vasona Reservoir is a lake in Santa Clara County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.

Are there boat ramps on Vasona Reservoir?

Vasona Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Vasona Lake County Park. Public access is listed as yes.

Can I fish at Vasona Reservoir?

Vasona Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by California's fish and wildlife agency, so check its current regulations before you go.

Vasona Reservoir

Santa Clara County, California52 acresView map Directions

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

Area

52 acres

Surface area

Shoreline

2.1 mi

Measured length

Impaired · Pesticides
Public access
Limited data

See the measurements Directions Where to stay

Vasona Reservoir in Santa Clara County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 52 acres.

Loading map…

Vasona Reservoir is a 52-acre lake in Santa Clara County, California. Limited fish-species data available. Public access is available with 1 public boat landing.

Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.

What Vasona Reservoir is good for

From access and monitoring records, not editorial picks.

Boat launch1 documented ramp

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Vasona Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for pesticides, pCBs. Check local advisories before you swim.

Whether Vasona 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 Vasona Reservoir →

Water quality measurements for Vasona Reservoir

These are the measurements SWRCB publishes for Vasona 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 Vasona Reservoir

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

Lake Details

Surface area

52 acres

Shoreline

2.1 mi

Public access

Yes

Listed by SWRCB

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

Recreation & Access

Boat Landings

Yes

Public Access

Vasona Lake County ParkPublic

Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps

Stays via Stay22

Stays near Vasona Reservoir

Compare lakeside cabins, hotels, and vacation rentals near Vasona Reservoir in Santa Clara 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 Vasona 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 Vasona Reservoir’s readings

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

Or email

Fishing Vasona Reservoir

→ Vasona Reservoir fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Vasona Reservoir is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).

Causes of impairment

PesticidesPCBs

Designated uses not supporting: Fish consumption.

Source: EPA ATTAINS assessment unit CAL2054005020020327162629 · Official waterbody report

Nearby Lakes in Santa Clara County

Guadalupe Reservoir6.2 miView →Stevens Creek Reservoir7 miView →Lake Elsman8.3 miView →Almaden Reservoir9 miView →Calero Reservoir10.9 miView →Halls Valley Lake15.5 miView →

Frequently asked questions about Vasona Reservoir

Where is Vasona Reservoir?: Vasona Reservoir is a lake in Santa Clara County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.
What is the water quality of Vasona Reservoir?: Vasona Reservoir in Santa Clara County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 52 acres.
Is Vasona Reservoir safe to swim in?: Nutrient and algae readings are not a swimming clearance. Vasona Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for pesticides, pCBs. Check local advisories before you swim.
Are there boat ramps on Vasona Reservoir?: Vasona Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Vasona Lake County Park. Public access is listed as yes.
Can I fish at Vasona Reservoir?: Vasona Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by California's fish and wildlife agency, so check its current regulations before you go.