Occurrence and Transport of Agricultural Chemicals in the Mississippi River Basin, July Through August 1993
Author: Charles A. Perry
Publisher:
Published: 1984
Total Pages: 300
ISBN-13:
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Author: Charles A. Perry
Publisher:
Published: 1984
Total Pages: 300
ISBN-13:
DOWNLOAD EBOOKAuthor: D. A. Goolsby
Publisher:
Published: 1993
Total Pages: 0
ISBN-13:
DOWNLOAD EBOOKAuthor: D. A. Goolsby
Publisher:
Published: 1993
Total Pages: 32
ISBN-13:
DOWNLOAD EBOOKAuthor: Etats-Unis. Geological Survey
Publisher:
Published: 1993
Total Pages: 22
ISBN-13:
DOWNLOAD EBOOKAuthor: Donald A. Goolsby
Publisher:
Published: 1993
Total Pages: 22
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DOWNLOAD EBOOKAuthor: Donald B. | Battaglin Goolsby (William A.)
Publisher:
Published: 1993
Total Pages:
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DOWNLOAD EBOOKAuthor: Dana W. Kolpin
Publisher:
Published: 1995
Total Pages: 32
ISBN-13:
DOWNLOAD EBOOKThe historic stream flooding and intense rainfall across the upper Mississippi River Basin during summer 1993 had an immediate effect on near-surface unconsolidated aquifers by raising the water levels closer to the land surface. The objective of this study was to determine if this flooding also had immediate effects on ground-water quality. Water samples were collected during September and October 1993 from 110 wells completed in near-surface unconsolidated aquifers and were analyzed for herbicides, herbicide metabolites, inorganic nutrients, and volatile organic compounds. The results of these samples were compared with those obtained during summer 1991 or 1992. Water samples from the Missouri River alluvial aquifer had a fourfold increase in the frequency of herbicide detection. There also appears to be a relation between increases in total herbicide concentration and the occurrence of stream flooding near a well. Water samples from wells that had at least a 20% increase in dissolved-oxygen concentration had the greatest frequency of substantial changes in total herbicide concentration and substantial increases in nitrate concentration.
Author: United States. Army. Corps of Engineers. North Central Division
Publisher:
Published: 1994
Total Pages: 104
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1984
Total Pages: 30
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1994
Total Pages: 32
ISBN-13:
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