This supporting document for Iowa's 2000 Section 305(b) report (Water Quality in Iowa During 1998 and 1999 (DNR 2001)) presents information on the degree to which individual Iowa waterbodies (rivers, streams, lakes, flood control reservoirs, and wetlands) supported their beneficial uses during the biennial period from October 1997 through September 1999. This report does not contain information on groundwater quality (for information on groundwater. quality, see Part IV: Groundwater Assessment in Water Quality in Iowa During 1998 and 1999(DNR 2001)). This report presents assessment information for the 6,400 miles of streams and rivers, 136 publicly-owned lakes, four flood control reservoirs and 88 publicly-owned wetlands assessed for the 19...