The U.S. Army Engineer Research and Development Center's Fish Ecology Team in Vicksburg, Mississippi, is using new technology, an autonomous underwater vehicle, in a study of the value of borrow pits in the active floodplain of the Lower Mississippi River. The team is matching the water quality data it collects with the EcoMapper with fish sampling to determine the relative value of borrow pits, which make up more than 40 percent of aquatic habitat in the floodplain.