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2008 Impaired Streams 303 d list in Category 4a

2016 Impaired Streams 303 d list in Category 4a

Downloadable Data!

Updated: 2014-08-21 10:49:00

Publisher: Arkansas Department of Environmental Quality

Publication Date: 17-May-10

REST Endpoint

Data Description

2016 Impaired Streams 303 d list in Category 4a


The purpose of this dataset is to provide a cartographic representation of the streams on the Impaired Waterbodies 303(d) list in Category 4a. Additional information can be found Part IV of the 2016 Integrated Water Quality Monitoring and Assessment Report (305(b)).


This data includes streams of Arkansas that have been designated as Impaired Waterbodies and have completed TMDLs (Total Maximum Daily Loads) for the listed pollutant pair(s) (Category 4a). It consists of a subset of the streams from the National Hydrography Dataset (NHD) Medium Resolution (1:100,000) Flowline. Category 4 is described as follows:

Category 4. Water quality standards are not attained for one or more designated uses but the development of a TMDL is not required because:

4a. A TMDL has been completed for the listed parameter(s);

4b. Other pollution control requirements are expected to result in the attainment of the water quality standard; or

4c. Non-support of the water quality standard is not caused by a pollutant.



Use limitations

The dataset included in this file is intended for mapping purposes only. The official record for the 2016 Impaired Waterbodies (303(d) list) can be found at the following URL:

[Keywords: inlandwaters environment ADEQ Category 4a Impaired Waterbodies ]