One old ranching rule of thumb — don’t name your livestock — collided with desperation and modern technology on a small spread outside Douglas, Arizona. The Pauns had intended to leave their newest calf unnamed, in keeping with tradition and the practical distance ranch life demands, but their daughter christened the blue‑eyed, soft‑snouted newborn Frankie on a visit to the barn. Frankie’s survival, the Pauns say, is tied to a new generation of precision ranching tools that are reshaping how livestock owners fight the worst drought in decades.
The landscape these families steward is a patchwork of grasslands known as the Sky Islands, straddling the U.S.–Mexico border in what is commonly called the Malpai region. The roughly 1‑million‑acre mosaic of rangeland and mountain foothills supports wildlife and cattle alike, and many ranchers here view themselves as conservationists as much as producers. They practice rotational grazing, repair erosion, and cooperate with conservation easements to maintain biodiversity and soil health. But the rains have faltered: monsoons have been weak, winter storms sparse, and grasses that once fed herds are failing to green up. Supplemental feed is costly, and for some families the only option has been to shrink their herds or exit ranching entirely.
Faced with thinning forage and shrinking water supplies, a growing number of Malpai ranchers are supplementing traditional skills with a suite of technologies designed to squeeze more resilience from a fragile system. Solar‑powered sensors, remote water gauges, GPS‑enabled collars and artificial intelligence tools are being tested and adopted to monitor water, track animals across rugged terrain and analyze animal behavior — all with the aim of making limited resources go further.
On a desk in his home office, Richard Winkler watches a digital map populated by rain gauges, tank monitors and labeled waypoints on pastures that spread out across thousands of acres. Winkler, the owner of Sunrise Cattle Ranch, has had to sell roughly two‑thirds of his herd over the last two years. The remaining livestock are managed with help from a three‑year precision ranching study led by researchers at New Mexico State University, in which Winkler and five other ranchers participate.
“ It means summer has started,” Winkler said of a lone turkey vulture seen riding an unusually early blue sky — a small omen of a season every rancher watches nervously. For him, the real omen is the alert that pings his monitor: an automated sensor reporting a rapid drop in a storage tank’s level at a trough three miles from his house. Sensors beam water‑level updates every 15 minutes, allowing him to spot leaks sooner than routine drives could. In some cases a remote‑controlled pump or automatic timers refill troughs without a trip to the field; at other times the data lets him call a neighbor or crew and patch a leak before the tank runs dry.
Most of the water Winkler collects comes from winter catchment; in drought years he supplements with pumped groundwater. “It takes me all winter to store the water,” he said. “It’s nerve‑wracking. You don’t sleep good at night.” The sensor network does not remove the worry, but it changes its shape. Rather than cruising hundreds of miles in a day inspecting tanks and troughs, ranchers can prioritize which sites need immediate attention and which can wait until later, freeing time for other work or off‑ranch employment many families rely on.
Similar systems have been a lifeline for Dawn Strelow, who commutes more than an hour and a half from her job at an extension office to check on her ranch across the Peloncillo Mountains. Smart sensors let her check water levels from her cellphone; if a reading looks wrong, she can call in help. And when livestock wander, GPS tracking has replaced hours of aimless searching. “You can find your cow on Google maps like you find somebody's address,” Strelow said, describing the relief of shrinking a four‑hour search into a 45‑minute recovery.
The GPS collars, roughly the size of a brick, dangle from an animal’s neck and broadcast location data. Batteries typically require replacement about once a year, a modest maintenance demand for ranchers who have long chased strays across brushy hills and narrow canyons. Beyond location, the collars feed data into AI systems that analyze movement and behavior. Those analytics can distinguish between leisurely grazing and long, purposeful treks for forage, offering insights about which animals are more proactive foragers and which are struggling. In tight seasons, this helps owners decide which individuals to keep and which to cull, and it can flag health or birthing emergencies so ranchers can intervene more quickly.
Those interventions matter. Strelow described tracking a tagged heifer near the time she was expected to calve; the cow eventually miscarried, but the GPS data enabled her team to locate the animal quickly and administer antibiotics and care that saved the cow’s life. For newer operators who did not inherit land or a generational support network, technology can lower barriers to entry by reducing the labor and mystery involved in managing large, remote tracts.
The Pauns, who took over Lee Station Ranch six years ago without the cushion of a family inheritance, said they adopted GPS collars and sensors because “we needed to find an edge.” Their decision reflects a broader shift in the Malpai: ranching traditions persist — horses, ropes and decades of local knowledge — but are increasingly augmented by real‑time data. That hybrid approach aims to balance production with stewardship, allowing pastures stressed by overgrazing and drought to recover while still keeping livestock on the landscape.
Precision ranching is not a cure for extended dry spells, and it cannot replace the rain that once underwrote the region’s grazing systems. But the tools give ranchers information and speed that can make the difference between losing animals and saving them, between patching a leak and losing a tank, between tracking a straggler and spending a day searching. In the harsh arithmetic of the current drought, those margins of time and data are critical.
A solar-powered field sensor station among rows of crops, collecting soil and weather data that help ranchers manage water use during Arizona's prolonged drought.
An irrigation canal and adjacent farmland — water-delivery infrastructure ranchers monitor and optimize with sensors, GPS and AI to cope with dwindling supplies.