The Kings River has been designated by the state of Arkansas as an "Extraordinary Resource Waterbody." This designation imposes restrictions on streambed alterations and development and pollution in the river basin. The state of Arkansas describes the river: "High in the Boston Mountains of Madison County lie the beginnings of the Kings River. From this steep country the stream twists its way northward to the White River....In its upper reaches, the Kings cuts a narrow gorge through sandstone, shale and limestone. On downstream, the countryside is not quite so precipitous, but the water is the same -- clear and cool." The King's River Natural Area, established in 1979, is located on the upper Kings River east of the hamlet of Boston. The Natural Area includes and features a two-mile hiking trail which leads to Kings River Falls, a scenic 6-feet (2 mt) high waterfall. The Natural Area is located in a rugged mountain area. A mixed pine-hardwood forests cloaks the east slopes of the preserve; the steeper western slopes are covered with hardwood forest. The uppermost tributaries of the Kings River are in the
Ozark National Forest. The McIlroy Madison County Wildlife Management Area comprises including several miles along the Kings. In 2010, the
Nature Conservancy established a preserve which includes seven miles of frontage on the Kings River, a short distance downstream (north) of the Wildlife Management Area. Recreational paddlers divide the Kings River into two sections. An upper section of eleven miles, from Dripping Springs to the
Arkansas State Route 74 crossing of the river, is a turbulent class III whitewater stream, including the waterfall at the Kings River Natural Area. The water level of the river in this section is usually sufficient for floating in winter and spring until about July 1. Water quality is excellent. The lower Kings River comprises 82.5 river miles from State Highway 74 to
Missouri State Highway 86. It is a relatively gentle Class I stream that usually contains enough water to be floated in winter, spring, and early summer until August or after rains at any time. The Kings River has good sport fishing for
smallmouth bass and other species. ==References==