Publications
Browse more than 150,000 publications authored by our scientists over the past 100+ year history of the USGS. Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.
Upper Midwest Environmental Sciences Center Publications
Filter Total Items: 3223
The study of buried drift aquifers in Minnesota by seismic geophysical methods
Buried-drift aquifers are stratified sand and (or) gravel aquifers in glacial deposits that cannot be seen or inferred at the land surface. During the Pleistocene Epoch, four continental glaciations advanced and retreated across Minnesota, blanketing the bedrock surface with drift as much as 700 feet thick (fig. 1). Most of the drift consists of till, an unsorted, un-stratified mixture of clay sil
Authors
D. G. Woodward
Precipitation and streamflow data - Collections techniques
No abstract available.
Authors
R. G. Brown
Effects of an urban wetland on sediment and nutrient loads in runoff
An urban wetland in the Minneapolis-St. Paul Metropolitan Area was found to retain sediment and nutrient loads in runoff routed through the wetland. Sediment and nutrient loads in runoff were measured during 1982 at the inlet and outlet of the 6.4-bectare urban wetland. Comparison of annual loads entering and leaving the wetland showed that retention of incoming loads in the wetland was 97 percent
Authors
R. G. Brown
Determination of hydraulic conductivity in three dimensions and its relation to dispersivity: Chapter D in Ground-water contamination by crude oil at the Bemidji, Minnesota, research site; US Geological Survey Toxic Waste--ground-water contamination st
Recent investigations suggest that dispersion in aquifers is scale dependent and a function of the heterogeneity of aquifer materials. Theoretical stochastic studies indicate that determining hydraulic-conductivity variability in three dimensions is important in analyzing the dispersion process. Even though field methods are available to approximate hydraulic conductivity in three dimensions, the
Geohydrology and hydrochemistry of aquifers in Cretaceous rocks, Minnesota
No abstract available.
Authors
H. W. Anderson, J. F. Ruhl
Occurrence and timing of second clutches in common terns
Eighteen pairs of Common Terns (Sterna hirundo) at three different colonies laid second clutches while still feeding young from their first broods. Seven clutches were laid before the chicks from the first brood fledged, and 11 were laid after the chicks from the first brood fledged. In each case, parents alternately fed chicks from the first brood and incubated the second clutch. Sixteen of the 1
Authors
D.A. Wiggins, R.D. Morris, I.C.T. Nisbet, T. W. Custer
Measuring the surface area of sediment particles in measurement and analysis of sediment loads in streams
No abstract available.
Authors
J. V. Skinner
Procedures for use of freshwater fishes in the development of reproducible toxicological information
Abstract not submitted to date
Authors
L. L. Marking
Water chemistry at selected sites on pools 7 and 8 of the upper Mississippi River: a ten-year survey
Abstract not submitted to date
Authors
V. K. Dawson, G. A. Jackson, C. E. Korschgen
Species composition of fish communities in northern Wisconsin lakes: Relation to pH
Fish communities in circumneutral Wisconsin lakes contained significantly more species than did those in acidic lakes (pH 5.1-6.0). Common, as well as rare, species occurred with lower frequency in acidic lakes than in circumneutral lakes. Certain taxa, such as minnows and darters, were either absent or rare in the acidic lakes, probably because of pH-related stress. The differences in species
Authors
J.G. Wiener, P.J. Rago, J.M. Eilers
Longitudinal distribution of trace elements (As, Cd, Cr, Hg, Pb, and Se) in fishes and sediments in the upper Mississippi River
Abstract not submitted to date
Authors
J.G. Wiener, G. A. Jackson, T.W. May, B.P. Cole