Document Type
Technical Report
Publication Date
7-2022
Keywords
HUC-8, total nitrogen, total phosphorus, nutrient gradients
Abstract
The annual formation of the Northern Gulf of Mexico hypoxic zone is driven by nutrient loading from the Mississippi-Atchafalaya River Basin (MARB). Member States of The Mississippi River/Gulf of Mexico Hypoxia Task have developed statewide strategies to identify priorities and opportunities for nutrient export reduction in the MARB. In 2014, the State of Arkansas joined the Task Force and initiated an Arkansas Nutrient Reduction Strategy (ANRS), which currently prioritizes ten Hydrologic Unit Code 8 (HUC-8) watersheds (ANRD, 2014). These priority watersheds were not selected based on measured in-stream nutrient concentrations or trends, which impedes quantitative assessment, goal setting, and linking investments to nutrient reduction progress. The ANRS is currently under revision to address these concerns, and the goal of this project was to develop a prioritization framework for the State of Arkansas based on robust statistical analysis of extensive, statewide ambient water quality monitoring data sets.
Citation
Grantz, Erin and Haggard, Brian E.. 2022. Watershed prioritization to reduce nutrient export: A framework for the State of Arkansas based on ambient water quality monitoring data. Arkansas Water Resource Center, Fayetteville, AR. MSC392. 56
https://scholarworks.uark.edu/awrctr/367
Report Number
MSC392
Page
56
Comments
Funded by Arkansas Dept. of Agriculture Natural Resources Division