2016 Impaired Streams 303 d list in Category 1b
The purpose of this dataset is to provide a cartographic representation of the streams in Category 1b as a result of the 2016 assessment of the State’s waters. 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 assessed as meeting their water quality standards and designated uses, and have completed TMDLs (Total Maximum Daily Loads) in place for a previously impaired pollutant pair(s) (Category 1b). It consists of a subset of the streams from the National Hydrography Dataset (NHD) Medium Resolution (1:100,000) Flowline. Category 1 is described as follows:
Category 1. Attains all water quality standards for all designated uses; categorized by existence of a TMDL or not for one or more constituents:
1a. Attaining water quality standards for all designated uses, no use is threatened. No TMDL exists for any constituents.
1b. Attaining all water quality standards for all designated uses; however, a TMDL remains in place for one or more constituents.
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: https://www.adeq.state.ar.us/water/