Unnamed Thermal Spring
Drag the handle to compare the two views. The orange dot marks the spring, in a frame about three quarters of a mile wide.
An unnamed thermal point a couple of miles from Benicia in Solano County, a short distance off Lake Herman Road. Tepid, low seventies. You would feel the warmth with a hand in it and little beyond that. There is no owner, unit or access status in the record, and so close to Benicia that you will want to ask around before you go.
Low ground at about 200 feet, mild, with modest rain and no snow. Lake Herman Road is a couple hundred feet off. No land manager listed. The only camp entry tied to this record is a sailing-vessel anchorage at Aquatic Park Cove, some twenty-five miles off, which is no use to anyone coming by car.
Winter is the listed best period; the climate is mild all year. Roadside from Lake Herman Road. No usable camping in our data. Tepid water, as noted. Access is unrecorded, so confirm before visiting. No fee is noted either, and no land agency has claimed the point.
Aircraft with laser scanners measured this ground to within inches. The scan strips out trees and buildings, leaving the bare shape of the land around this spring.
- Setting
- Gentle slope
- The ground tilts gently up to the south.
- Highest ground nearby
- 179 ft above the spring
- Within a quarter mile, to the south
A slice through the ground from northwest to southeast, about 0.6 miles end to end.
Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.
That's about twice the US average of 65. It's higher than at 68% of the springs on this site.
Heat flow measures the warmth working its way up through the ground from deep inside the earth. Where it runs high, rain and snowmelt that seep down through cracks in the rock come back up hot.
See every spring on the geothermal heat map →
Heat flow estimate: Stanford Thermal Earth Model (Aljubran & Horne, 2024), CC BY 4.0.
Overview Aquatic Park Cove is a vibrantly urban harbor that mimics a natural anchorage and is located on the Pacific shores of one of America's great West Coast cities. San Francisco Maritime National Historical Park's Aquatic Park Cove is the small craft gateway to San Francisco. Vessels entering Aquatic Park Cove are instructed to contact the Park's permit officer on VHF marine radio channel 83A (157.175Mhz) using the call sign "Aquatic Park NPS" followed by transmission of the vessel'...
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