Lower Arkansas

{
  "id": "MLC-T-ENV-016116",
  "term": "Lower Arkansas",
  "field": "Environment",
  "definition": "The Arkansas River Basin below Keystone Dam to the point of highest backwater effect of the Mississippi River below Lock and Dam 4 on the Arkansas River, but excluding the Canadian, Neosho, and Verdigris River Basins. Arkansas, Oklahoma. Area = 15600 sq.mi.",
  "references": [
    "USGS Water Resources of the United States. Boundary Descriptions and Names of Regions, Subregions, Accounting Units and Cataloging Units"
  ],
  "url": "https://mlchart.com/terminology/environment/lower-arkansas/"
}