Overview
A spa that ran dry

Agua Caliente means "hot water," and for a long time the water was the whole story. Springs flowed from the foot of the Agua Caliente Mountains, a few miles north of the Gila River near the Yuma County line. Native people used them first. A Jesuit missionary named them in 1744, and in the 1850s the Butterfield stage line ran along the Gila a few miles south.
By 1864 the springs belonged to a ranch run by Martin and King Woolsey, the rancher and Indian fighter. The writer J. Ross Browne bathed there that year and compared the springs to the baths of Damascus. Word spread, and in 1897 a 22-room hotel went up, with a pool fed by the hot water. A post office opened in 1888, about 150 people lived in the precinct by 1910, and by 1929 the Phoenix–Yuma highway ran past the hotel. In World War II the hotel housed men training in the area, and a pool was built for officers from nearby Camp Horn.
Then the springs failed. Most accounts blame irrigation wells on the surrounding farms, which dropped the water table, though some say blasting destroyed the springs. Highways moved away, the post office closed in 1960, and the resort shut. The hotel survived on private land, along with a pump house, stone ruins and a pioneer cemetery, and in 1999 it was still lived in.
Timeline
Two centuries of hot water
- Native people use the hot springs at the foot of the mountains.
- The Jesuit missionary Jacob Sedelmayr names the springs Santa María del Agua Caliente. Francisco Garcés uses the short name in 1775.
- The Butterfield Overland Mail opens a stage station at Flap-Jack Ranch on the Gila River, about six miles from the springs and 84 miles from Fort Yuma.
- Union reports from the California Column list Grinnell's Ranch at the same spot. Nearby Stanwix Station sees the westernmost skirmish of the Civil War.
- J. Ross Browne, Charles Poston and Ammi White ride over to the ranch of Martin and King Woolsey by the springs, where Martin is irrigating a farm. Browne bathes in the springs and praises them.
- Woolsey still owns the ranch, and the springs draw a steady stream of visitors.
- A post office opens.
- A 22-room resort hotel goes up, with a pool fed by the hot water.
- The local count rises from 113 people in 1900 to 153 in the 1910 census of the Agua Caliente precinct.
- The USGS Aztec sheet shows the Phoenix–Yuma highway running past the resort, with water channels heading south toward the Gila.
- During World War II the hotel houses men training in the area, and a swimming pool is built for officers from nearby Camp Horn.
- The springs go dry, most sources say because irrigation wells lowered the water table. New highways bypass the town.
- The post office closes.
- A visitor finds the hotel still lived in, with trailers across the road, on private land.
- Photos show the hotel, the pump house, stone ruins and the pioneer cemetery still standing.
- A video posted in March shows the hotel still standing with its doors shut, along with the stone ruins, a tin-roofed shack and the pioneer cemetery.
What's left
Hotel, ruins and a cemetery


The hotel is a long, low white building with a covered porch on a base of dark stone, right beside the road. Photos from 2018 show it standing, with a white pump house topped by a railed platform and spiral stairs nearby. Around them are the walls of several stone houses built from the dark local rock, a small shack with a tin roof, and old farm and resort equipment. Heatwole's guide to Arizona ghost towns adds caretakers' quarters, an old store and about 2,700 acres of surrounding land in the same ownership. A video posted in March 2023 shows the hotel, the stone ruins and the shack still standing.
The Agua Caliente Pioneer Cemetery lies on the south side of the road just east of the ruins, so you pass it on the way in. Photos also show the lone grave of an unknown person, marked with a wooden cross.
The historic maps below follow the town's slide. The 1929 Aztec sheet marks Agua Caliente with a spring symbol at the foot of the mountains, the Phoenix–Yuma highway passing through, and an old road and water channels running south toward the Gila. The 1965 Agua Caliente sheet shows a tight cluster of buildings at the road bend and the cemetery to the east. By 1980 rectangular field boundaries and wells spread across the valley to the east.
- Agua Caliente Hotel (1897), closed
- Pump house
- Stone house ruins
- Tin-roofed shack
- Resort and farm equipment
- Agua Caliente Pioneer Cemetery
- Lone grave of an unknown person


Record and legend
Claims to check
What killed the springs? Wikipedia, azghosttowns.com and an undated listing say groundwater pumping for irrigation dried them up. A reader note on that listing and the GhostTownAZ site say they were destroyed by blasting, by the owners or by developers enlarging the resort. We haven't found a firsthand record of either.
The Oatman captives. J. Ross Browne wrote in 1869 that the people who had taken the Oatman girls captive in 1851 made their first stop at these springs. That is Browne's account, and we haven't seen it confirmed.
A governor's visit. George W. P. Hunt, later Arizona's first governor, is said to have stayed at the hotel. We found the claim only on secondary sites.
Historic maps
Agua Caliente on USGS maps, 1929–1980
Crops from the USGS Historical Topographic Map Collection, centered on the townsite. Each sheet shows what surveyors mapped that year; compare them with today's topo and aerial on this page.

Map & directions
Getting there
Gila Bend is the nearest town with services, about an hour east. From Phoenix, the route runs down AZ 85 to Gila Bend and west on I-8. Both leave I-8 at the Sentinel exit and head north on South Agua Caliente Road and South 571st Avenue, then turn onto Old Agua Caliente Road, past the cemetery to the ruins.


Base map: USGS The National Map (public domain). Routes: OSRM on © OpenStreetMap contributors data (ODbL), computed October 2026. Times assume dry roads.
- From downtown Gila Bend, take Pima Street (I-8 Business) west and join I-8.2 mi
- Follow I-8 west to the Sentinel exit, exit 87.27.6 mi
- Turn right on South Agua Caliente Road and continue north as it becomes South 571st Avenue.11.3 mi
- Turn left on West Old Agua Caliente Road. The cemetery is on the left, then the ruins and the hotel at the road bend.1.1 mi
- Take I-10 west from downtown Phoenix to exit 112.33.8 mi
- Follow AZ 85 south to Gila Bend and join I-8 west.36.7 mi
- Follow I-8 west to the Sentinel exit, exit 87.27.6 mi
- Turn right on South Agua Caliente Road, continue north on South 571st Avenue, then turn left on West Old Agua Caliente Road to the townsite.12.4 mi
Road and safety notes
- OpenStreetMap tags South Agua Caliente Road, South 571st Avenue and Old Agua Caliente Road as asphalt (October 2026), except an untagged 1.3-mile stretch where the first becomes the second. Photos from March 2018 show the road paved past the hotel. A 1999 guide called the roads well maintained and passable year-round.
- The hotel and ruins are on private land. A visitor in 2012 reported no-trespassing signs at the hotel. Look from the road.
- The cemetery is on the south side of the road before the ruins. Treat the graves with respect.
- Summers here are very hot. Go between October and April, and carry water; we know of no services past Gila Bend on this route.
Photos
Agua Caliente in photos
Visitor reports
Been to Agua Caliente?
Been there lately? Tell the next visitor what you found: whether you could get in, the state of the road and what's still standing. Photos are welcome. We read every report before it appears here.
Mill, lumber and company
More mill, lumber and company ghost towns
The nearest in Arizona.

GuideSundad
33.18, -113.24Maricopa County, Arizona
A desert health colony from the 1920s that never took off. What's left is a scatter of foundations on federal land, and its name spelled out in rocks…

GuideAllah
33.93, -112.69Maricopa County, Arizona
A pioneer ranch on a desert river that became the Garden of Allah resort, with its own train stop and post office. The grounds are now a nature…
Nearby
Other sites near Agua Caliente
Straight-line distance from the townsite to other mapped sites in our Arizona index.
- Griswell's Station12.4 mi SW · Yuma
- Aztec14.1 mi SW · Yuma
- Sundad14.5 mi N · Maricopa
- Texas Hill Station22.2 mi SW · Yuma
- Murderer's Grave Station23.1 mi E · Maricopa
- Harqua25.9 mi NE · Maricopa
- Peterman's Station32.2 mi SW · Yuma
- Kofa42.0 mi NW · Yuma
Sources
Sources and credits
- ghosttowns.com, "Agua Caliente": fact sheet fields (roads, legal description, climate, best time, remains), the 22-room hotel of 1897, the closed hotel and caretakers, and a reader's note on blasting.
- Wikipedia, "Agua Caliente, Arizona", retrieved October 2026: the 1744 and 1775 names, the Butterfield station and California Column itinerary, J. Ross Browne's 1864 visit (from Adventures in the Apache Country, 1869), Woolsey in 1873, population counts, and Thelma Heatwole's description of the property.
- Wikipedia, "List of historic properties in Agua Caliente, Arizona": the wartime pool and Camp Horn, the highways that bypassed the town, the cemetery, and the photos used here.
- azghosttowns.com, "Agua Caliente" (visit of October 1999): private property viewable from the road, directions from exit 87, the cemetery, the occupied hotel, the wartime pool, the falling water table, coordinates.
- GhostTownAZ, "Agua Caliente Ghost Town" (visit of 2012): no-trespassing signs at the hotel, Governor Hunt's visit, the blasting story.
- Cactus Atlas, "The CURIOUS Ghost Towns of AGUA CALIENTE and SUNDAD | Arizona", YouTube, posted March 16, 2023: the newest report we found, used only for what it shows (the pioneer cemetery, stone ruins, the tin-roofed shack, the hotel standing with its doors shut, and people and parked cars on the grounds behind it). Not embedded.
- Jim Forte Postal History, Maricopa County post offices: Agua Caliente, 1888–1960.
- Coordinates: USGS GNIS "Agua Caliente" (feature ID 24294), as on Wikipedia. Land status: BLM Surface Management Agency data. Legal description: BLM PLSS (CadNSDI). Cemetery and road surfaces: OpenStreetMap, October 2026. Elevation: USGS 3D Elevation Program point query. Routes: OSRM on OpenStreetMap data, October 2026. Status checked against the sources above on October 22, 2026.
Photo and map credits
- The 1897 hotel beside Old Agua Caliente Road, 2018: Marine 69-71, Wikimedia Commons, CC BY-SA 4.0
- The hotel from the hillside above, 2018: Marine 69-71, Wikimedia Commons, CC BY-SA 4.0
- The resort's pump house, 2018: Marine 69-71, Wikimedia Commons, CC BY-SA 4.0
- A small shack with a tin roof, 2018: Marine 69-71, Wikimedia Commons, CC BY-SA 4.0
- The lone grave of an unknown person, 2018: Marine 69-71, Wikimedia Commons, CC BY-SA 4.0
- Topo map, area base map and aerial imagery: USGS The National Map (public domain).
- Historic maps: USGS Historical Topographic Map Collection (public domain): Aztec 1929, 1:62,500; Aztec 1950, 1:62,500; Agua Caliente 1965, 1:24,000; Aztec 1968, 1:50,000; Dateland 1980, 1:100,000.
