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By: Illinois. Division of Energy and Environmental Assessment. - Illinois. Office of Realty and Environmental Planning. - Illinois RiverWatch Network.Edition:Publication info: Springfield, Ill, Illinois Dept. of Natural Resources, Office of Realty and Environmental Planning, Division of Energy and Environmental Assessment, 1997Volume: 1997Series:Holding Institution: University Library, University of Illinois Urbana ChampaignSubjects: Handbooks, manuals, etc Illinois Illinois RiverWatch Project of the Critical Trends Assessment Program Stream conservation Water conservationBHL Collections: