Unified Interior Regions

Region 4: Mississippi Basin

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Filter Total Items: 4,580
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Year Published: 1985

National Pesticide Monitoring Program: Residues of organochlorine chemicals in freshwater fish, 1980–81

The U.S. Fish and Wildlife Service analyzed residues of organochlorine chemicals in 315 composite samples of whole fish collected in 1980–81 from 107 stations nationwide as part of the National Pesticide Monitoring Program (NPMP). The mean concentrations of total DDT and allp,p′-ho-mologs exceptp,p′-DDT showed significant but small declines...

Schmitt, Christopher J.; Zajicek, James L.; Ribick, M.A.

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Year Published: 1985

Population biology of bluegills, Lepomis macrochirus, in lotic habitats on the irrigated San Joaquin Valley floor

Rapid expansion of irrigated agriculture in the western United States has prompted concerns for aquatic resources. Although the impacts of irrigation activities on quality and quantity of river water are well documented (e.g., high turbidity from soil erosion, eutrophication from nutrient runoff, pesticide contamination, reduced dis- charge),...

Saiki, M. K.; Schmitt, C. J.

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Year Published: 1985

Interactions among temporary and permanent meiofauna: Observations on the feeding and behavior of selected taxa

Meiofauna diets and behavioral patterns are relatively unknown despite the fact that in any system, predatory relationships and behavioral responses may play an important role in determining community structure. Therefore, observations on food preferences, feeding behavior, and encounter interactions of members of a meiofauna assemblage were made...

Watzin, Mary C.

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Year Published: 1985

Water resources of north-central Iowa

One of man's fundamental needs is water.  Modern man needs both a safe and dependable supply of water to maintain his present economic, industrial, and cultural level.  In order to use this natural resource in the most efficient and beneficial manner, a basic knowledge and understanding of water sources, and of the occurrence and...

Buchmiller, Robert; Gaillot, Gary; Soenksen, P.J.

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Year Published: 1985

Analysis of the low-flow characteristics of streams in Louisiana

The U.S. Geological Survey, in cooperation with the Louisiana Department of Transportation and Development, Office of Public Works, used geologic maps, soils maps, precipitation data, and low-flow data to define four hydrographic regions in Louisiana having distinct low-flow characteristics. Equations were derived, using regression analyses, to...

Lee, Fred N.

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Year Published: 1985

Methods for the quantitative determination of multiple, specific polychlorinated dibenzo-p-dioxin and dibenzofuran isomers in human adipose tissue in the parts-per-trillion range. An interlaboratory study

No abstract available.

Albro, P.W.; Crummett, W.B.; Dupuy, A.E.; Gross, M.L.; Hanson, M.; Harless, R.L.; Hileman, F.D.; Hilker, D.; Jason, C.; Johnson, J.L.; Lamparski, L.L.; Lau, B.P.Y.; McDaniel, D.D.; Meehan, J.L.; Nestrick, T.J.; Nygren, M.; O'Keefe, P.; Peters, T.L.; Rappe, C.; Ryan, J.J.; Smith, L.M.; Stalling, D.L.; Weerasinghe, N.C.A.; Wendling, J.M.
Methods for the quantitative determination of multiple, specific polychlorinated dibenzo-p-dioxin and dibenzofuran isomers in human adipose tissue in the parts-per-trillion range. An interlaboratory study; 1985; Article; Journal; Analytical Chemistry; Albro, P. W.; Crummett, W. B.; Dupuy, A. E. Jr; Gross, M. L.; Hanson, M.; Harless, R. L.; Hileman, F. D.; Hilker, D.; Jason, C.; Johnson, J. L.; Lamparski, L. L.; Lau, B. P. Y.; McDaniel, D. D.; Meehan, J. L.; Nestrick, T. J.; Nygren, M.; O'Keefe, P.; Peters, T. L.; Rappe, C.; Ryan, J. J.; Smith, L. M.; Stalling, D. L.; Weerasinghe, N. C. A.; Wendling, J. M.

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Year Published: 1984

Availability and quality of water from the Dakota aquifer, northwest Iowa

The Dakota aquifer in northwest Iowa consists of sandstones in the Dakota Formation. It underlies most of the study area and is the most extensive source of ground water in the area. Individual sandstone beds are from less than 10 to more than 150 feet thick. The cumulative thickness of sandstone is more than 200 feet throughout much of the area....

Burkart, M.R.
Availability and quality of water from the Dakota aquifer, northwest Iowa; 1984; WSP; 2215; Burkart, M. R.

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Year Published: 1984

Cost-effectiveness of the stream-gaging program in Iowa

This report documents the results of a study of the cost-effectiveness of the stream-gaging program in Iowa. Data uses and funding sources were identified for the 122 surface-water stations (including reservoir, lake, stage only, and miscellaneous stations) operated by the U. S. Geological Survey in Iowa. There are 110 continuous streamflow...

Burmeister, I.L.; Lara, O.G.
Cost-effectiveness of the stream-gaging program in Iowa; 1984; WRI; 84-4171; Burmeister, I. L.; Lara, O. G.