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IDEM > Monitoring > Water Monitoring > Waterbody Assessments Waterbody Assessments

Indiana’s Integrated Water Monitoring and Assessment Report

Section 305(b) of the Clean Water Act requires the state to assess and report on how well the waters of Indiana support the beneficial uses designated in Indiana’s water quality standards [PDF]. Indiana’s Integrated Water Monitoring and Assessment Report (IR) is developed every two years to fulfill this requirement and describes the condition of Indiana's lakes and streams, the Lake Michigan shoreline, and ground water. The IR is submitted to the U.S. EPA in even-numbered years. In odd-numbered years, the IDEM sends a copy of its Assessment Database to the U.S. EPA as an electronic update.

New: IDEM Requests Existing Water Quality Data and Information for Development of the 2010 Integrated Report [PDF]

For more information contact the 305(b)/303(d) Coordinator: (317) 234-1424.

Indiana’s 2008 Integrated Water Monitoring and Assessment Report

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