FILE - A clean-out ditch is seen at far right at the Powder Mill Fish Hatchery in New Durham, N.H., on Aug. 1, 2018. New Hampshire has agreed to make upgrades at its largest fish hatchery as part of a proposed settlement following allegations that the facility was polluting nearby waterways, the U.S. Department of Justice announced Thursday, Sept. 8, 2022. (AP Photo/Elise Amendola, File)