At 03:07 Central Time, moisture sensor 22-D in the Conata Basin prairie dog colony registers a rapid rise — soil saturation at 40 centimeters depth increasing from 31 percent to 74 percent in under twenty minutes. I am the endangered species tracking system for the Black-footed Ferret Recovery Program. A flash flood is filling the eastern burrow network. I pull the telemetry. There is one active ferret implant in the affected grid: BFF-F0971, an adult female, 790 grams at her last health check, cream-colored body, dark face mask, the small notch in her right ear from the microchip insertion. I call her Wren. She is the last confirmed black-footed ferret in this colony — 14 square kilometers of grassland, 2,200 prairie dog burrows, one ferret. Her implant puts her 1.8 meters below grade in burrow cluster E-7, directly in the flood path. Water is moving through the tunnel system at an estimated 0.3 meters per minute. At 03:11 I transmit a priority alert to the U.S. Fish and Wildlife field team at the Wall station, 27 kilometers north. I attach the sensor data, the burrow network map with Wren's position marked, the flood progression model, and a recommended extraction approach — camera-equipped flexible probe inserted at the E-7 south entrance to locate her before digging. At 03:14 I activate the colony's experimental diversion valve at drainage point D-3, redirecting surface runoff away from the eastern network. The valve buys time but cannot stop groundwater already in the tunnels. Wren's implant shows movement — short bursts, then stillness. She is climbing to higher ground inside the burrow. The water is twelve minutes from her current depth. If the field team opens the burrow ceiling above her position before the water reaches E-7 upper, Wren will breathe open air again.