Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
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Frequency of the 1993 flood in the upper Mississippi River Basin Frequency of the 1993 flood in the upper Mississippi River Basin
The frequency of the 1993 flood in the upper Mississippi River Basin is characterized by applying Bulletin 17B and L-moment methods to 111 unregulated watersheds in the basin. The analysis indicated that the 1993 flood was primarily a 10- to 50-year event on unregulated watersheds less than about 50,000 square kilometers. Of the 111 stations analyzed, the L-moment and Bulletin 17B...
Authors
W.O. Thomas, D. A. Eash
Metal concentration in the gill, gastrointestinal tract, and carcass of white suckers (Catostomus commersoni) in relation to lake acidity Metal concentration in the gill, gastrointestinal tract, and carcass of white suckers (Catostomus commersoni) in relation to lake acidity
Adult white suckers were collected from four lakes in Maine that ranged in pH from 7.0 to 5.4. The gastrointestinal tract and remainder of the carcass of fishes of similar age and size from each lake, and gills from additional fishes of similar size, were analyzed for Al, Cd, Pb, and Zn. Carcasses were also analyzed for Hg. Concentrations of Al, Cd, and Pb were highest in the...
Authors
T.A. Haines, W. G. Brumbaugh
The Freshwater Fishes of Virginia The Freshwater Fishes of Virginia
Abstract not supplied at this time
Authors
R.E. Jenkins, N.M. Burkhead
Freshwater bivalves Freshwater bivalves
Abstract not supplied at this time
Authors
J.D. Williams, R.S. Butler
Geographic distribution: Anolis sagrei ordinatus (Bahamian Brown Anole) Geographic distribution: Anolis sagrei ordinatus (Bahamian Brown Anole)
Abstract not supplied at this time
Authors
R. Franz, C.K. Dodd
Bioaccumulation of metals by Hyalella azteca exposed to contaminated sediments from the upper Clark Fork River, Montana Bioaccumulation of metals by Hyalella azteca exposed to contaminated sediments from the upper Clark Fork River, Montana
Macroinvertebrates contaminated with metals in the Clark Fork River of Montana have been demonstrated to be a potentially toxic component in the diet of trout Because sediment was the suspected source of metals to these invertebrates, bioaccumulation of As, Cd, Cu, Pb, and Zn from sediment was evaluated by exposing the amphipod Hyalella azteca for 28 d in the laboratory to samples of...
Authors
Christopher G. Ingersoll, William G. Brumbaugh, F. James Dwyer, Nile E. Kemble
Hydrologic data for the Big Spring basin, Clayton County, Iowa, water year 1991 Hydrologic data for the Big Spring basin, Clayton County, Iowa, water year 1991
Hydrologic data were collected in the Big Spring Basin located in Clayton County, Iowa, during the 1991 water year. The data were collected by the U.S. Geological Survey in cooperation with the Iowa Department of Natural Resources, Geological Survey Bureau, to provide information on variation and movement of agricultural chemicals in the hydrologic cycle in the basin. Precipitation...
Authors
S. J. Kalkhoff, R.L. Kuzniar
Environmental contaminants in redheads wintering in coastal Louisiana and Texas Environmental contaminants in redheads wintering in coastal Louisiana and Texas
Whole body and liver analyses indicated that wintering redheads (Aythya americana; n = 70) in coastal Louisiana (one site) and Texas (two sites) were relatively free of contamination with common trace elements, organochlorines, and hydrocarbons. Most trace elements, including As, Cr, Hg, Mg, Mn, Ni, Pb, Se, Sr, and Zn, were within background concentrations in livers; levels of B, Cd, Cu...
Authors
T.C. Michot, T. W. Custer, A.J. Nault, C. A. Mitchell
Acute toxicity and hazard assessment of Rodeo®, X-77 Spreader®, and Chem-Trol® to aquatic invertebrates Acute toxicity and hazard assessment of Rodeo®, X-77 Spreader®, and Chem-Trol® to aquatic invertebrates
The herbicide Rodeo® provides waterfowl managers with an effective chemical tool for creating open water habitats in wetlands if its use does not adversely affect native invertebrate communities. The survival of caged Chironomus spp. (midge), Hyalella azteca (amphipod),Stagnicola elodes (pond snail), and Nephelopsis obscura (leech) was assessed in prairie pothole wetlands treated by air...
Authors
C. J. Henry, K. F. Higgins, K.J. Buhl
Dioxins, dibenzofurans, PCBs and colonial, fish-eating water birds Dioxins, dibenzofurans, PCBs and colonial, fish-eating water birds
No abstract available.
Authors
J. P. Giesy, J. P. Ludwig, D. E. Tillitt
Managing coastal wetlands: Complexities, compromises, and concerns Managing coastal wetlands: Complexities, compromises, and concerns
No abstract available
Authors
Joy B. Zedler, Abby Powell