San Ysidro Warm Springs

Sandoval County, New Mexico · Near Jemez Pueblo
35.5480°N, 106.8270°W · 5,516 ft
68°F 63°F air · Good soaking weather 5,516 ft Open Short Walk Bureau of Land Management Camping nearby (13.0 mi)
Aerial view of the ground around San Ysidro Warm Springs LiDAR bare-earth view of the same ground around San Ysidro Warm Springs
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.

BLM land in Sandoval County, under seven miles from Jemez Pueblo, holds San Ysidro Warm Springs. Barely warm, upper sixties, so no one is soaking here in any season. Public access is open, which is the main reason it earns a page. A 1982 sample found slightly acidic water with iron, sodium, calcium, magnesium, chloride and sulfate.

Location

Under 400 feet on foot from the road. The BLM Rio Puerco Field Office manages it and the designation is public land. Mid elevation near 5,500 feet, a modest snow year, dry otherwise. The record names no road. The annual average is mild. Nothing on file describes the outlet or where the water goes.

Open access, no fee recorded. Too cool to soak in. Vista Linda Campground is about thirteen miles away. Winter is the season the figures favor. If the interest is in public thermal ground near Jemez Pueblo this is one of the few with open access on file.

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 San Ysidro Warm Springs.

Setting
Hillside
The spring sits on a steep slope that climbs to the northwest.
Highest ground nearby
284 ft above the spring
Within a quarter mile, to the northwest
Cross-section through the spring

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.

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 50% 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
31°
Jan
37°
Feb
47°
Mar
55°
Apr
63°
May
76°
Jun
78°
Jul
76°
Aug
68°
Sep
56°
Oct
43°
Nov
32°
Dec
Annual Precip: 9.4 in Annual Snow: 14.6 in
Best Time to Visit
January Air 31°F · Water 68°F · +37° contrast
December Air 32°F · Water 68°F · +36° contrast
February Air 37°F · Water 68°F · +31° contrast
January offers 47°F more contrast than July
Current Conditions
63°F
W 16.6 mph 88% Good soaking weather
Today 80° Low 59° Partly Sunny then Chance Showers And Thunderstorms 27% precip
Wednesday 79° Low 58° Showers And Thunderstorms 87% precip
Thursday 78° Low 57° Rain Showers 90% precip
Friday 81° Low 55° Chance Rain Showers then Chance Showers And Thunderstorms 53% precip
Saturday 82° Low 54° Mostly Sunny then Slight Chance Showers And Thunderstorms 16% precip
Water Chemistry Sampled 1982-08-30

The water at San Ysidro Warm Springs is slightly acidic (pH 6.1). It is notably rich in calcium (may support bone density and joint health), magnesium (known for muscle relaxation and stress relief), and sodium (supports circulation and skin hydration).

pH 6.1 Slightly Acidic
pH influences mineral absorption through skin
Calcium 320 mg/L
May support bone density and joint health
Magnesium 72 mg/L
Known for muscle relaxation and stress relief
Sodium 1,800 mg/L
Supports circulation and skin hydration
Sulfate 1,200 mg/L
Traditionally used for skin conditions and inflammation
Chloride 1,700 mg/L
Natural antiseptic with skin health benefits
Iron 11000 µg/L
Iron-rich springs may support circulation
Nearby Camping
Nearby Camping
Vista Linda Campground 13.0 mi away

Overview Vista Linda Campground is a first come, first serve campground in the San Diego Canyon on the Jemez National Recreation Area. There are thirteen sites throughout the campground. Potable water and vault toilets are provided amenities. Each campsite has picnic tables, a fire ring, and a charcoal pedestal. Sites with shad features are available; not all sites provide shade features.  Recreation Vista Linda Campground is one of five developed campgrounds in the Jemez National Recreation...

Reservable Yes
Reserve on Recreation.gov →
Mile-High Advisory 5,516 ft

San Ysidro Warm Springs sits at 5,516 feet above sea level, way above the mile-high mark. You may not feel the altitude strongly, but hot water still dehydrates you faster at elevation. UV is about 22% stronger than at sea level, so bring sunscreen and drink more water than you normally would.

As an Amazon Associate, we earn from qualifying purchases.

Temperature
68°F
Warm Hot Boiling
Water Temp 68°F (20°C)
Avg Air Temp 55°F
Above Ambient +13°F
Mild soaking conditions September
Access
Open
Road Access Short Walk
Distance to Road 379 ft
Land
Ownership Federal
Agency Bureau of Land Management
Designation PUB
Unit Rio Puerco Field Office
Manager Bureau of Land Management
Protection 3 - Protected, subject to extractive use
Frequently Asked Questions
What is the water temperature at San Ysidro Warm Springs?
San Ysidro Warm Springs has a water temperature of 68°F (20°C). This is a warm thermal spring.
Where is San Ysidro Warm Springs located?
San Ysidro Warm Springs is located in Sandoval County, New Mexico at 5,516 feet elevation, near Jemez Pueblo. Coordinates: 35.5480°N, 106.8270°W.
How do I get to San Ysidro Warm Springs?
San Ysidro Warm Springs has Short Walk road access (379 ft from the road).
Is San Ysidro Warm Springs free to visit?
San Ysidro Warm Springs has Open access. It is managed by Bureau of Land Management.
Can I camp near San Ysidro Warm Springs?
Yes, Vista Linda Campground is located nearby (13.0 miles away).
What minerals are in the water at San Ysidro Warm Springs?
Water chemistry analysis shows the presence of pH, Calcium, Magnesium, Sodium, Sulfate, Chloride, Iron. The pH is 6.1 (slightly acidic).
Sources: USGS NWIS