USGS and USFWS personnel in the Cabeza Prieta National Wildlife Refuge desert, AZ

A team of USGS and US Fish and Wildlife personnel who worked on remote sensing of water catchments called "tinajas" in Cabeza Prieta National Wildlife Refuge in order to assess their water storage. Desert bighorn sheep rely on persistent water throughout the year, and consistent accurate information about the water volume in the catchments allows the USFWS to assess whether they need to transport water for bighorn sheep survival. Photo by Josh Caster, USGS.