"New emails detail drained ponds, salvaged fish and a tense relationship with the Department of Homeland Security."
"During the fall of 2019, the Department of Homeland Security began pumping large amounts of water from a southern Arizona aquifer to mix concrete for the Trump administration’s border wall. The aquifer is an essential water source for the San Bernardino National Wildlife Refuge, so when the pumping escalated, U.S. Fish and Wildlife officials watched helplessly as the water levels at several ponds — the main habitat for the endangered fish at this Sonoran Desert refuge — dropped “precipitously.”
In what Bill Radke, who has managed the refuge for two decades, called “life support” actions, staff was forced to shut off water to three of the ponds to minimize broader damage. As a result, biologists had to salvage endangered fish from the emptying ponds. It was “like cutting off individual fingers in an attempt to save the hand,” Radke wrote in an email to staff.
Since its creation in 1982 the 2,300-acre refuge’s sole mission has been to protect the rare species of the Río Yaqui, including endangered fishes like the Yaqui chub and Yaqui topminnow, and other species, such as the tiny San Bernardino springsnail and the endangered Huachuca water umbel, a plant that resembles clumps of tubular grass. Through a series of artesian wells connected to an aquifer, the refuge has kept ponds filled in this fragile valley for nearly 40 years."