Drainage areas for selected stream-sampling stations, Missouri River Basin

Release Date

2006-01-01

Publication Date

2023-09-15

Godberson, J.A., Zelt, R.B., and Zoller, A.L., 2006, Drainage areas for selected stream-sampling stations, Missouri River Basin: U.S. Geological Survey data release, https://doi.org/10.5066/P96E8WQJ.

The U.S. Geological Survey (USGS) began full implementation of the National Water-Quality Assessment (NAWQA) program in 1991. The program objectives are to describe current water-quality conditions and trends over time; and to improve our understanding of the natural and human factors that affect water quality. The Missouri River Basin (MRB4) is one of more than 50 areas to be studied for this program. The MRB4 study of trends in nutrients and suspended sediment includes available data from sampling stations operated both for the NAWQA program and for other USGS programs. Water-quality characteristics at each station are influenced by the natural and cultural characteristics of the drainage area upstream from the sampling station. Efficient quantification of drainage area characteristics requires a digital map of the drainage area boundary that may be processed, together with other digital thematic maps (such as geology or land use), in a geographic information system (GIS).

• Model Data Management Function (MDMF)