Lower Mississippi-Helena Watershed - 08020100

Home to approximately 1,000 Arkansans (2000 Census), the Lower Mississippi-Helena watershed lies within the Mississippi River Basin in Eastern Arkansas along the Mississippi border.  The hydrologic unit code for this watershed is 08020100.  Three watersheds are upstream:  The Lower Mississippi-Memphis (08010100)Lower St. Francis (08020203) and Lower White Watershed (08020303).  The Lower Mississippi-Greenville (08030100) is downstream.

State-Level Map - Lower Mississippi-Helena Watershed-Level Map - Lower Mississippi-Helena Watershed Land Use Map - Lower Mississippi-Helena
County Pages
(Contact Information)
Major Streams 2006 Land Use
(270 Square Miles)
  • Mississippi River
  • Forest: 38.6%
  • Cropland: 27.0%
  • Water: 23.6%
  • Transitional: 8.2%
  • Grassland: 1.4%
  • Suburban: 0.4%
  • Urban: 0.0%

Data Source: CAST

Lower Mississippi-Helena 303d list 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.