West Texas has the world’s largest spring-fed pool and it’s been open for 11,000 years

It’s been drawing people for 11,000 years

Out in the Chihuahuan Desert, where the land flattens and the heat climbs and the Davis Mountains rise in the distance, there’s a pool of water that shouldn’t exist.

The San Solomon Springs have pushed cold, clear water through the desert floor for thousands of years, and today that water fills the largest spring-fed swimming pool on earth.

Millions of gallons flow through it every day, and the temperature never strays far from 74 degrees. What waits below the surface is even harder to explain until you’re in it.

Thousands of years of desert history beneath your feet

The springs drew Paleo-Indian people here as far back as 11,000 years ago.

In 1583, a Spanish expedition led by Antonio de Espejo met Jumano people at these springs, who guided the party through the region.

By 1849, the site went by Mescalero Springs, named for the Mescalero Apache who watered horses and irrigated crops here.

Mexican farmers later hand-dug canals to carry the water to fields and sold their harvest to Fort Davis.

The name Balmorhea came from four men who formed an irrigation company in the early 1900s: Balcom, Morrow, Joe Rhea and John Rhea.

The CCC built something that’s still standing 90 years later

In 1934, the State Parks Board acquired the land around the springs.

CCC Company 1856 arrived the following year, made up largely of local residents who knew the desert.

They quarried limestone, made adobe bricks by hand, and built the pool, bathhouses, a concession building, roads, and a set of motor court cabins.

The pool opened June 27, 1936, and work continued until the company left in January 1940. No chemicals were ever part of the design.

The springs flow straight through the pool, the same way they always have.

Step into 3.5 million gallons of crystal-clear spring water

The pool holds 3.5 million gallons and drops to 25 feet in the deep end.

A large circular section anchors the center, with two long rectangular arms extending out at shallower depths.

The water stays between 72 and 76 degrees year-round, so even in July, when the desert air hits 100 degrees, the pool cools you fast. Because the springs replace the water continuously, no chlorine touches it.

You can see straight to the sandy bottom where the springs bubble up. There’s no lifeguard on duty, so kids stay with an adult.

Strap on a tank and drop into 100 feet of visibility

Scuba divers come from across Texas and New Mexico to train in this pool.

Visibility runs 60 to 100 feet on a normal day, and the conditions stay calm and consistent, which makes it ideal for certification dives. Certified divers need to show proof and dive with a buddy.

If you’d rather snorkel, you can float a few feet above schools of fish, turtles, and swaying aquatic plants without going more than neck-deep. Night diving adds another layer.

Nocturnal species come out after dark, and the springs look different when your dive light is the only thing cutting through the water.

Swim with two fish found almost nowhere else on earth

The Comanche Springs pupfish and the Pecos gambusia live in these waters.

Both are endangered, and both depend almost entirely on spring-fed habitats in the Balmorhea area of West Texas. Their original homes elsewhere in the region dried up over the decades as groundwater dropped.

The park’s canals also hold a pure genetic strain of the headwater catfish, a rare and declining species.

You’ll see them while you swim, along with Mexican tetras and Texas spiny softshell turtles moving through the clear water around you.

The wetland the CCC destroyed has been growing back since 1995

When the CCC built the pool in the 1930s, the construction buried the natural cienega, the desert wetland that once collected the spring water at the surface.

In 1995, Texas Parks and Wildlife launched the Cienega Project to rebuild what was lost. Today, two man-made cienegas sit beside the pool, thick with cattails, rushes and reeds.

Water flows from the pool through those plants before moving into irrigation canals.

The project pulled together farming interests, state agencies and federal partners, and in 1998, it won a Texas Quality Initiative Award for that cooperation.

The birds here are worth a second morning

The cienegas and canals draw a wide range of birds, and if you’re up early, you’ll see why this park sits on the Davis Mountains birding loop, one of the top birding areas in Texas.

The vermilion flycatcher lives here year-round, a small bird with a red body so deep it looks painted. Kingfishers, phoebes, hummingbirds, wrens, hawks and overwintering waterfowl all move through.

There’s also an underwater viewing window in the park that lets you watch aquatic life in the cienega from below the surface, without getting wet.

Sleep in a 1930s motor court that just got a full restoration

The CCC built the San Solomon Motor Courts at the same time as the pool. Red tile roofs, white-plastered adobe walls, and a layout that put you close to the water.

The courts sat in rough shape for years, but in August 2024 they reopened after a full renovation. Workers uncovered original hardwood floors under old carpet and refurbished the CCC-built furniture.

Rooms now have air conditioning, microwaves and small refrigerators.

The bones are still 1930s, the era when road travelers first started making their way through West Texas.

Camp under some of the darkest skies in the lower 48

The park has 34 campsites for tents and RVs, all with electric hookups and water. The campground went through its own renovation, with new paving, a new restroom and upgraded utility systems.

West Texas sits far enough from city light that the Milky Way runs clear across the sky on most nights.

The flat, dry terrain and low humidity keep the air transparent, which means constellations you’d normally squint to find show up sharp. Two sites are ADA-accessible, and reservations go fast on weekends.

The whole region rewards an extra day or two

Davis Mountains State Park sits about 30 miles away, with hiking trails, a scenic drive and more birding.

McDonald Observatory, up in the Davis Mountains, runs star parties and public viewing programs that go deep into the night.

Fort Davis National Historic Site holds one of the best-preserved frontier military posts in the American West. The town of Marfa, known for its art scene and the Marfa Lights, is within driving distance.

The park also sits at the northern edge of Big Bend country, so a longer road trip connects easily from here.

Why the springs keep pulling people back

More than 200,000 people visit Balmorhea each year. In 2020, the park added 643 acres for conservation and future development.

The springs have sustained people, animals and agriculture for thousands of years, and every layer of that history is still visible here. The CCC stonework.

The endangered fish. The rebuilt wetlands.

The same water pushing up through the same sand it always has.

In one of the driest corners of the country, the springs just keep coming, and the park built around them keeps drawing people in.

Visit Balmorhea State Park in Texas

Balmorhea State Park sits in Toyahvale, Texas, about three miles south of the town of Balmorhea on State Highway 17, roughly an hour south of Interstate 10 at Exit 206.

The park is open year-round, seven days a week, with the gate open from 8 a.m. to 7:30 p.m. or sunset. Standard Texas state park entry fees apply for swimming.

Reservations for both day use and overnight stays are strongly recommended, especially on weekends and holidays. Book through the official Texas Parks and Wildlife website before you go.

This article was created with AI assistance and human editing.

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