Where is Lake Herman?

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

Are there campgrounds on Lake Herman?

Lake Herman has 1 public campground from USGS The National Map within 5 km, including Enroute Campground-Benicia State Recreation Area. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.

Lake Herman

Solano County, California96 acresView map Directions

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

Area

96 acres

Surface area

Shoreline

2.6 mi

Measured length

Impaired · Mercury
Limited data

See the measurements Directions Where to stay

Lake Herman in Solano County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 96 acres.

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Lake Herman is a 96-acre lake in Solano County, California.

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

What Lake Herman is good for

From access and monitoring records, not editorial picks.

Camping1 public campground nearby

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Lake Herman is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.

Whether Lake Herman 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 Lake Herman

These are the measurements SWRCB publishes for Lake Herman, 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 Lake Herman

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

Lake Details

Surface area

96 acres

Shoreline

2.6 mi

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

Recreation & Access

Campgrounds

Public campgrounds near Lake Herman

Enroute Campground-Benicia State Recreation Area3.9 km

Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes

Stays via Stay22

Stays near Lake Herman

Compare lakeside cabins, hotels, and vacation rentals near Lake Herman in Solano 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 Lake Herman

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 Lake Herman’s readings

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Fishing Lake Herman

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

EPA Impairment Status

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

Causes of impairment

Mercury

Designated uses not supporting: Fish consumption.

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit CAL2072103019980928163418 · Official waterbody report

Nearby Lakes in Solano County

Lake Chabot5.4 miView →Lake Frey13.9 miView →Lake Madigan15 miView →Lagoon—View →

Frequently asked questions about Lake Herman

Where is Lake Herman?: Lake Herman is a lake in Solano County, California. Its water-quality measurements are published by SWRCB and shown on this page as reported.
What is the water quality of Lake Herman?: Lake Herman in Solano County, California has water-quality measurements published by SWRCB, shown here as reported. Surface area: 96 acres.
Is Lake Herman safe to swim in?: Nutrient and algae readings are not a swimming clearance. Lake Herman is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
Are there campgrounds on Lake Herman?: Lake Herman has 1 public campground from USGS The National Map within 5 km, including Enroute Campground-Benicia State Recreation Area. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.