Arkansas’s Final/ Draft Impaired Waterbodies – 303(d) List by Year

The 303(d) list is developed by ADEQ every two years under provisions of Section 303(d) of the Federal Clean Water Act. ADEQ assesses water quality monitoring data from numerous locations around the state and utilizes a comprehensive assessment methodology to determine which waters are not meeting their designated uses or water quality standards as listed in the Arkansas Water Quality Standards (Regulation 2 of the Arkansas Pollution Control and Ecology Commission).

Draft 2016 Impaired Waterbodies – 303(d) List

About the 2016 Maps

To assist with the review process, ADEQ has created maps by county depicting the waters included on the Draft 2016 303(d) list. The maps were creating using a subset of the streams from the USGS National Hydrography Dataset (NHD) Medium Resolution (1:100,000) Flowline.

  • Waters included on the Draft 2016 303(d) list in Category 5 are represented by purple lines and polygons.
  • Waters included on the Draft 2016 303(d) list in Category 4a are represented by black dashed lines and orange polygons.
  • Waters included on the Draft 2016 303(d) list in Category 1b are represented by yellow lines and polygons.

Draft 2014 Impaired Waterbodies – 303(d) List

About the 2014 Maps

To assist with the review process, ADEQ has created maps depicting the waters included on the Draft 2014 303(d) list by county. The maps were created using a subset of the streams from the USGS National Hydrography Dataset (NHD) Medium Resolution (1:100,000) Flowline electronic mapping layer.

  • Streams included on the Draft 2014 303(d) list in Category 5 are represented by purple lines and lakes included on the Draft 2014 303(d) list in Category 5 are represented as light purple polygons.
  • Streams included in Draft 2014 Category 4a are represented by dashed black lines and lakes included in Draft 2014 Category 4a are represented by tan polygons.
  • There are occasions in which a waterbody may be included on the Draft 2014 list in both Category 5 and Category 4a; therefore, these waters will have a dashed or hashed overlay with a purple underlay.

Draft 2012 Impaired Waterbodies – 303(d) List

About the 2012 Maps

To assist with the review process, ADEQ has created maps by county depicting the waters included on the Draft 2012 303(d) list. The maps were creating using a subset of the streams from the USGS National Hydrography Dataset (NHD) Medium Resolution (1:100,000) Flowline.

  • Waters included on the Draft 2012 303(d) list in Category 5 are represented by purple lines and shapes.
  • Waters included on the Draft 2012 303(d) list in Category 4a are represented by yellow lines and polygons.
  • The yellow lines representing the 2012 Draft Category 4a streams have been offset in order to be able to view the instances when a stream segment is listed in both Category 5 and Category 4a.

You can access a map in jpeg format by clicking the county name below. A complete list of all county maps in PDF format is also available.

Draft 2010 Impaired Waterbodies – 303(d) List

2008 Impaired Waterbodies – 303(d) List