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Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.

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1993 Annual summary: ENTERGY Lake Dardanelle fish and zebra mussel study 1993 Annual summary: ENTERGY Lake Dardanelle fish and zebra mussel study

Abstract not supplied at this time
Authors
J.N. Stoeckel, C.J. Gagen, D.O. McCollum, R.K. Beadel, J.J. Herod, S.D. Shook

Flood discharges in the upper Mississippi River basin, 1993 Flood discharges in the upper Mississippi River basin, 1993

From mid-June through early August 1993, flooding was severe in the upper Mississippi River Basin following a wet-weather pattern that persisted over the area for at least 6 months before the flood. The magnitude and timing of several intense rainstorms in late June and July, combined with wet antecedent climatic conditions, were the principal causes of the flooding. Flood-peak...
Authors
Charles Parrett, Nick B. Melcher, Robert W. James

2,3,7,8-Tetrachlorodibenzo-p-dioxin equivalents in tissues of birds at Green Bay, Wisconsin, USA 2,3,7,8-Tetrachlorodibenzo-p-dioxin equivalents in tissues of birds at Green Bay, Wisconsin, USA

The environment has become contaminated with complex mixtures of planar, chlorinated hydrocarbons (PCHs) such as polychlorinated biphenyls (PCBs), polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and structurally similar compounds. Because the potencies of individual congeners to cause the same adverse effects vary greatly and the relative as well as...
Authors
Paul D. Jones, John P. Giesy, John L. Newsted, David A. Verbrugge, Donald L. Beaver, Gerald T. Ankley, Donald E. Tillitt, Keith B. Lodge, Gerald J. Niemi

Acute toxicity of the herbicide bromoxynil to Daphnia magna Acute toxicity of the herbicide bromoxynil to Daphnia magna

The acute toxicities of technical-grade bromoxynil octanoate (BO) and two commercial formulations, Buctril® and Bronate®, to 24-h-old neonate Daphnia magna (Straus) were determined in soft, hard, and oligosaline water. In addition, effects of life stage, feeding, aging the herbicide, and exposure duration on BO toxicity to daphnids were investigated. Regardless of formulation, life...
Authors
Kevin J. Buhl, Steven J. Hamilton, James C. Schmulbach

National water summary 1990-91: Hydrologic events and stream water quality National water summary 1990-91: Hydrologic events and stream water quality

National Water Summary 1990-91 Hydrologic Events and Stream Water Quality was planned to complement existing Federal-State water-quality reporting to the U.S. Congress that is required by the Clean Water Act of 1972. This act, formally known as the Federal Water Pollution Control Act Amendments of 1972 (Public Law 92-500), and its amendments in 1977,1979,1980,1981,1983, and 1987, is the...

Scour at a bridge over the Weldon River, Iowa Scour at a bridge over the Weldon River, Iowa

Contraction scour at the State Highway 2 bridge over the Weldon River in south-central Iowa was caused by a flood of record proportions on September 14 and 15, 1992. The peak discharge was 1, 930 cubic meters per second,which was 4 times the probable 100-year flood used to design the bridge, and resulted in road overflow. Contraction scour exposed the pier footings, but a subsurface...
Authors
Edward E. Fischer
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