Lone Tree Mineral Spring

San Joaquin County, California · Near Tracy
37.5730°N, 121.4450°W · 868 ft
73°F 868 ft Roadside
Aerial view of the ground around Lone Tree Mineral Spring LiDAR bare-earth view of the same ground around Lone Tree Mineral Spring
Aerial LiDAR bare earth

Drag the handle to compare the two views. The orange dot marks the spring, in a frame about three quarters of a mile wide.

Lone Tree Mineral Spring in San Joaquin County sits about eleven miles outside Tracy. The water is barely warm, well under body temperature, so the interest here is mineral, if there is any. Nobody has recorded who owns it or if the public can go there. No photo is attached. The row lists no campground and gives no chemistry.

Location

Four feet from the road, according to the record, road unnamed. Elevation is low, under a thousand feet, in low country with no snow and light rain. Nothing marks the land unit or owner, and no designation is attached. Nothing in the row says what the spring looks like on the ground.

Winter is listed as best, and the climate allows any month. The water cannot burn you, and most people would not call it a soak. Who owns the ground is unknown; being this close to a road it could easily be private frontage, so look for posting.

Terrain

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 Lone Tree Mineral Spring.

Setting
Canyon floor
Steep ground climbs away on both sides of the spring.
Highest ground nearby
491 ft above the spring
Within a quarter mile, to the west
Cross-section through the spring

A slice through the ground from west to east, about 0.6 miles end to end.

Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.

Heat Below
102 milliwatts per square meter of heat flow

That's about 1½ times the US average of 65. It's higher than at 51% 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.

Heat flow estimate: Stanford Thermal Earth Model (Aljubran & Horne, 2024), CC BY 4.0.

Monthly Climate
49°
Jan
51°
Feb
54°
Mar
60°
Apr
66°
May
75°
Jun
79°
Jul
78°
Aug
74°
Sep
66°
Oct
55°
Nov
49°
Dec
Annual Precip: 15.5 in Annual Snow: 0.4 in
Best Time to Visit
December Air 49°F · Water 73°F · +25° contrast
January Air 49°F · Water 73°F · +24° contrast
February Air 51°F · Water 73°F · +22° contrast
December offers 31°F more contrast than July
Current Conditions
SSW 18.0 mph
Tuesday 86° Low 64° Sunny
Wednesday 81° Low 60° Sunny
Thursday 81° Low 58° Sunny 2% precip
Friday 85° Low 62° Sunny
Saturday 86° Low 65° Sunny
Temperature
73°F
Warm Hot Boiling
Water Temp 73°F (23°C)
Avg Air Temp 63°F
Above Ambient +10°F
Mild soaking conditions September
Access
Road Access Roadside
Distance to Road 4 ft
Frequently Asked Questions
What is the water temperature at Lone Tree Mineral Spring?
Lone Tree Mineral Spring has a water temperature of 73°F (23°C). This is a warm thermal spring.
Where is Lone Tree Mineral Spring located?
Lone Tree Mineral Spring is located in San Joaquin County, California at 868 feet elevation, near Tracy. Coordinates: 37.5730°N, 121.4450°W.
How do I get to Lone Tree Mineral Spring?
Lone Tree Mineral Spring has Roadside road access (4 ft from the road).