Unified Interior Regions

Region 4: Mississippi Basin

Regions L2 Landing Page Tabs

Filter Total Items: 4,580
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Year Published: 1982

Hydrology of the surficial aquifer in the Floyd River Basin, Iowa

The Floyd River basin was studied to provide water-resources Information for a typical surficial aquifer in northwest Iowa. Data collection included test drilling, water-level measurements, and chemical analyses of surface and ground water. The Floyd River basin drains 961 square miles of highly dissected to gently rolling topography. Major...

Wahl, K.D.; Meyer, M.J.; Karsten, R.A.

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Year Published: 1981

Floods in the English River basin, Iowa

Information describing floods is essential for proper planning, design, and operation of bridges and other structures on or over streams and their flood plains. This report provides information on flood stages and discharges, flood magnitude and frequency, bench mark data, and flood profiles for the English River and some of its tributaries....

Heinitz, A.J.; Riddle, D.E.
Floods in the English River basin, Iowa; 1981; OFR; 81-67; Heinitz, A. J.; Riddle, D. E.

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Year Published: 1981

An ecological characterization of the central and northern California coastal region. Vol. 4, part 2 (chapter 17-29): watersheds and basins

Jones and Stokes Associates, Inc.
An ecological characterization of the central and northern California coastal region. Vol. 4, part 2 (chapter 17-29): watersheds and basins; 1981; Federal Government Series; FWSOBS; 80/48.2; edited by Jones and Stokes Associates Inc.

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Year Published: 1981

Surface-water quality, Twin Ponies watershed, Pottawattamie and Mills counties, Iowa

Existing surface-water quality in the Twin Ponies watershed is significantly affected by runoff from agricultural lands that comprise most of the area. Runoff effects include the addition of phosphate, organic nitrogen, fecal bacteria, trace metals, pesticides and notably suspended sediment to streaMflow, because runoff commonly is a transport...

Detroy, Mark G.
Surface-water quality, Twin Ponies watershed, Pottawattamie and Mills counties, Iowa; 1981; OFR; 81-679; Detroy, Mark G.

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Year Published: 1981

Water resources data for Iowa, water year 1980

This report was prepared by personnel of the Iowa district of the Water Resources Division of the U.S. Geological Survey under the supervision of D. K. Leifeste, District Chief, and Alfred Clebsch Jr., Regional Hydrologist, Central Region. It was done in cooperation with the State of Iowa and with other agencies. This report is...

Water resources data for Iowa, water year 1980; 1981; WDR; IA-80-1; Geological Survey (U.S.)

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Year Published: 1981

Organochlorine residues in fish: National Pesticide Monitoring Program, 1970-74

As part of the National Pesticide Monitoring Program, the U.S. Fish and Wildlife Service analyzed organochlorine contaminant residues in fish samples collected from about 100 stations each year from 1970 to 1974. During this period, mean residues of DDT and its metabolites declined nationally but remained widespread, and high concentrations...

Schmitt, Christopher J.; Ludke, J. Larry; Walsh, D.F.

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Year Published: 1981

The freshwater‐inflow‐to‐estuaries issue

Over 55% of the United States commercial fish and shellfish catch is dependent upon estuaries for spawning and nursery functions, but estuaries cannot function ecologically without an adequate supply, seasonal inflow, and quality of freshwater from inland rivers. Such inland river development projects as constructing reservoirs, leveeing rivers,...

Benson, Norman Gustaf

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Year Published: 1981

Mercury in the muscle tissue of fish from three northern Maine lakes

There is evidence that fish in Canadian wilderness areas exhibit elevated mercury levels because of the oligotrophic nature of the lakes they inhabit (BROUZES et al. 1977). D'ITRI et al. (1971) reported higher levels of mercury in trout from oligotrophic waters than in trout from eutrophic waters in unpolluted areas. They attributed part of the...

Akielaszek, J.J.; Haines, T.A.
Mercury in the muscle tissue of fish from three northern Maine lakes; 1981; Article; Journal; Bulletin of Environmental Contamination and Toxicology; Akielaszek, J. J.; Haines, T. A.

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Year Published: 1980

Floods in the Raccoon River basin, Iowa

Evaluation of flood hazards, and the planning, design, and operation of various facilities on flood plains requires information on floods. This report provides information on flood stages and discharges, flood magnitude and frequency, bench mark data, and flood profiles for the Raccoon River and some of its tributaries. It covers the Raccoon River...

Heinitz, Albert J.
Heinitz, A.J., 1980, Floods in the Raccoon River basin, Iowa: U.S. Geological Survey 80–162; 110 p., https://doi.org/10.3133/ofr80162.