Pollution of ground and surface waters
There is a concern in the Southern Mississippi River Valley of the United States over non-point source pollution of ground and surface waters resulting from activities associated with agricultural production. This agriculturally intensive region consists of two major land resource areas (MLRAs): Southern Mississippi Valley Silty Uplands (MLRA 134) and the Southern Mississippi Valley Alluvium (MLRA 131). Both MLRAs have level to undulating and rolling topography, relatively fertile soils and a climate particularly conducive for row crop production.
Scott, H. D.. 1998. Vulnerability and use of Ground and Surface Waters in the Southern Mississippi Valley Region. Arkansas Water Resources Center, Fayetteville, AR. MSC269. 142