Lower Neosho (Spavinaw) Watershed - 11070209

Home to approximately 11,000 Arkansans (2000 Census), the Lower Neosho watershed lies within the Arkansas River Basin in Northwest Arkansas crossing into Oklahoma.  The hydrologic unit code for this watershed is 11070209.  Upstream is the Lake O' The Cherokees (11070206) and the Dirty-Greenleaf (Oklahoma) is downstream.

State-Level Map - Lower Neosho-Spavinaw Watershed-Level Map - Lower Neosho-Spavinaw Watershed Land Use Map - Lower Neosho-Spavinaw
County Pages
(Contact Information)
Major Streams 2006 Land Use
(146 Square Miles)
  • Beaty Creek
  • Spavinaw Creek
  • Grassland:53.9%
  • Forest: 41.7%
  • Transitional: 2.3%
  • Suburban: 0.6%
  • Urban: 0.5%
  • Water: 0.1%

Data Source: CAST

Lower Neosho (Spavinaw) 303d Impaired Streams (what is an impaired stream?)


More Watershed-Related Information


  • Clean Water Act Section 303(d) Impaired Waters Data Update here
  • Arkansas’s Final/ Draft Impaired Waterbodies – 303(d) List by Year here
  • AR Water Newsletter, Summer, 2015 here
  • NPS Management Plan here
  • The projects presented at the 2015 annual NPS conference are located here

Interactive Map

Interactive Watershed Viewer
Explore your county or watershed with this flash-based interactive map.  View over 25 geographic and water-related layers. Open Interactive Watershed Viewer.