Unified Interior Regions
Region 4: Mississippi Basin
Regions L2 Landing Page Tabs
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.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.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.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...
Coastal ecosystem studies and their application to oil spill response
No abstract available.
Parsons, John W.Preliminary analysis of energy flow impacts of a river rediversion
McKellar, H.; Homer, M.; Pearlstine, L.; Kitchens, Wiley M.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.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 GustafMercury 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.Cognitive model for recreational spatial behavior in an urban area
No abstract available
Lloyd, Robert E.; Ader, RobertFloods 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.Iowa observation well network; past, present, and future
Water-level measurements in wells were started by the USGS in Iowa in 1935. Since then a total of about 450 different wells have been measured. The present network consists of about 70 wells. The measurement of these water levels aids in evaluating the present and future water resources of the State. Many factors influence water-level fluctuations...
Logel, John D.