Abstract:to provide a sound, scientific understanding of the primary natural and human factors affecting the quality of these resources (Huntzinger, 1991). In meeting these long-term goals, the program provides water-quality information that will be useful to policy makers and managers at the national, state, and local levels. Sixty study units were identified for water-quality assessment activities. These study units generally correspond to the major river basins throughout the United States (fig. 1). The Central Nebr… Show more
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