Impaired Waters - 303(d) List (IDEM, 2016)
Impaired Waters - 303(d) List (IDEM, 2016) - Shows waterbodies in Indiana that have been included on the 2016 303(d) List of Impaired Waters submitted by IDEM to the U.S. EPA. Attributes include regulatory identification numbers (IDEM), Hydrologic Unit Code (HUC) IDs, stream segment names, and county names. Additional attributes contain assessment information for which the waterbody may be impaired, in relation to waterbody characteristics, water chemistry and various biological parameters. Provided by personnel of the Indiana Department of Environmental Management (IDEM), Office of Water Quality on October 19, 2018. The following is excerpted from IDEM, OWQ documentation:

"The Indiana Impaired Waters layer reported in 2016 as part of the Indiana Integrated Water Monitoring and Assessment Report, includes the rivers, streams, and tributaries that do not meet water quality standards for 1 or more monitored indicators, and are listed as not supporting one or more uses, i.e., recreation, fish consumption, aquatic life, and drinking water supply."

"This layer is a subset of the statewide high-resolution National Hydrography Dataset (NHD) of streams that have been updated with Assessment Unit Identifiers (AUIDs) to correspond to the assessments based on waterbody characteristics, water chemistry, and biological parameters, i.e., habitat conditions, the health and diversity of fish and macroinvertebrate communities, plus fish tissue evaluations. The NHD has been further edited using the HEM tool for segment records to coinside with impairment extent."

For more information about the Water Quality Assessments and Reporting, please visit the following IDEM Web site: ( https://www.in.gov/idem/nps/2348.htm ) 

For more information about the Section 303(D) List Of Impaired Waters, please visit the following IDEM Web site: ( https://www.in.gov/idem/nps/2647.htm ) 

For more information about the TMDL Reports, please visit the following IDEM Web site: ( https://www.in.gov/idem/nps/2347.htm )

For more information about the IDEM OWQ "Online E303d Tool": ( https://www.in.gov/idem/nps/pages/e303d/index.html )
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