Newsom Springs
Newsom Springs delivers 99-degree water at just 638 feet elevation in the coastal ranges, creating a remarkable 39-degree temperature differential in this Mediterranean climate zone. The modest walk from the road makes thermal waters easily accessible to visitors.
The spring sits along Newsom Springs Road with coastal oak woodland and grassland dominating the landscape. The 350-foot approach crosses exposed chaparral terrain in this transitional zone between the coast and inland valleys.
Access via a short walk from Newsom Springs Road provides easy day-visit opportunity. The low elevation means mild temperatures year-round, with virtually no snow and moderate annual precipitation of 14 inches making visits feasible any season.
Newsom Springs represents geothermal activity in San Luis Obispo County's coastal mountain system. The thermal feature relates to deeper geological processes in California's Coast Ranges, a region known for scattered thermal and mineral springs.
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Overview American Canyon is a small, secluded campground which borders the Machesna Wilderness. While the campground is accessible through the wilderness, it is a long and strenuous hike as vehicles are not permitted in wilderness areas. The only motorized entrance is through the Avenales Ranch. This is a working cattle ranch, and the owners have been generous to grant access to American Canyon through their ranch. Entrance via the ranch gate is opened only during deer hunting season, by rese...
Newsom Springs is road-accessible, so you can bring more gear.
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