(1) The General Assembly declares the following areas to be nutrient surplus areas for phosphorus and nitrogen: The Illinois River watershed, included within Benton, Crawford, and Washington counties;
(2) The Spavinaw Creek watershed, included within Benton County;
(3) The Honey Creek watershed, included within Benton County;
(4) The Little Sugar Creek watershed, included within Benton County;
(5) The upper Arkansas River watershed, which includes Lee Creek within Crawford and Washington counties and Massard Creek within Sebastian County;
(6) The Poteau River watershed, included within Polk, Scott, and Sebastian counties;
(7) The Mountain Fork of the Little River watershed, included within Polk County; and
(8) The upper White River watershed above its confluence with Crooked Creek.
(9) The Arkansas Natural Resources Commission shall promulgate rules to further define the geographical boundaries of any area declared a nutrient surplus area.