Progress in interpretation of transient electromagnetic data in terms of subsurface permeability
- Texas A&M Univ., College Station, TX (United States)
The relative importance of nonpoint-source (NPS) pollution in the degradation of water quality has increased in the last two decades due to the control of pollutant releases from point sources. The most important source of NPS pollutants are agriculture and urban areas, which impact water quality in rivers, lakes, estuaries and groundwaters through the release of eroded sediments, fertilizers, pesticides, and municipal sewage sludge. Because of this, NPS pollution is an important environmental concern at state and national levels. Several transport processes control the dispersal of NPS pollutants, including leaching to groundwater, surface runoff, and aerial transport and deposition. Once in groundwater, these contaminants can impact surface water during stream recharge. While the losses of NPS pollutants from agricultural fields or urban areas can be small as a percentage of the total amount released, the cumulative additions to river systems from large drainage areas can be significant.
- OSTI ID:
- 381504
- Report Number(s):
- CONF-960477--
- Country of Publication:
- United States
- Language:
- English
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