Document Type

Technical Report

Publication Date



Arkansas, water monitoring, Kings River, dissolved oxygen


The Clean Water Act (CWA) establishes the basic structure used to regulate water quality. Under the CWA, States are required to assess water bodies relative to water‐quality standards and designated beneficial uses and then to submit lists of impaired bodies every other year to the US Environmental Protection Agency (USEPA). In 2015, at least 4,800 water bodies were listed as impaired by dissolved oxygen across the US (USEPA, 2015). Aquatic species like fish and macroinvertebrates depend on adequate dissolved oxygen for survival. Low dissolved oxygen can lead to fish kills, reduced aquatic diversity, and nuisance smells from anaerobic conditions – ultimately, low dissolved oxygen concentrations result in water bodies not being able to meet the aquatic life designated use.


The supplemental file is the water-date report that was used for data analysis and interpretation in this report.

DR-WQ-MSC378-Dissolved-Oxygen-Monitoring.pdf (3746 kB)
Data Report MSC378

Report Number