Publications
This list of Water Resources Mission Area publications includes both official USGS publications and journal articles authored by our scientists. A searchable database of all USGS publications can be accessed at the USGS Publications Warehouse.
Filter Total Items: 18468
Atrazine degradation in a small stream in Iowa
A study was conducted during 1990 through an 11.2-km reach of Roberts Creek in northeastern Iowa to determine the fate of atrazine in a surface water environment Water samples were collected at ~1-month intervals from April through November during stable low to medium flow conditions and analyzed for atrazine and two of its initial biotic degradation products, desethylatrazine and deisopropylatraz
Authors
D.W. Kolpin, S. J. Kalkhoff
Scour at a bridge over the Weldon River, Iowa
Contraction scour at the State Highway 2 bridge over the Weldon River in south-central Iowa was caused by a flood of record proportions on September 14 and 15, 1992. The peak discharge was 1, 930 cubic meters per second,which was 4 times the probable 100-year flood used to design the bridge, and resulted in road overflow. Contraction scour exposed the pier footings, but a subsurface layer of glaci
Authors
Edward E. Fischer
Determination of dissolved-phase pesticides in surface water from the Yakima River basin, Washington, using the Goulden large-sample extractor and gas chromatography/mass spectrometer
Concentrations of pesticides in the dissolved phase of surface water samples from the Yakima River basin, WA, were determined using preconcentration in the Goulden large-sample extractor (GLSE) and gas chromatography/mass spectrometry (GC/MS) analysis. Sample volumes ranging from 10 to 120 L were processed with the GLSE, and the results from the large-sample analyses were compared to those derived
Authors
Gregory D. Foster, Paul M. Gates, William T. Foreman, Stuart W. McKenzie, Frank A. Rinella
Boron, molybdenum, and selenium in aquatic food chains from the lower San Joaquin River and its tributaries, California
Boron (B), molybdenum (Mo), and selenium (Se) were measured in water, sediment, particulate organic detritus, and in various biota—filamentous algae, net plankton, macroinvertebrates, and fishes—to determine if concentrations were elevated from exposure to agricultural subsurface (tile) drainage during the spring and fall 1987, in the San Joaquin River, California. Concentrations of B and Se, but
Authors
Michael K. Saiki, Mark R. Jennings, William G. Brumbaugh
Ground-water conditions in Utah, spring of 1993
This is the thirtieth in a series of annual reports that describe ground-water conditions in Utah. Reports in this series, published cooperatively by the U.S. Geological Survey and the Utah Division of Water Resources, provide data to enable interested parties to keep abreast of changing ground-water conditions.This report, like the others in the series, contains information on well construction,
Authors
D.M. Batty, D.V. Allen, J.D. Sory, K.M. Hanson, W.J. Thomas, M.R. Greene, M.R. Danner, L. R. Herbert, H.K. Hadley, S.J. Gerner, B.A. Slaugh, R.L. Swenson, J.H. Howells, H.K. Christiansen
Comparison of episodic acidification of Mid-Atlantic Upland and Coastal Plain streams
Episodic acidification was examined in five mid-Atlantic watersheds representing three physiographic provinces: Coastal Plain, Valley and Ridge, and Blue Ridge. Each of the watersheds receives a similar loading of atmospheric pollutants (SO42− and NO3−) and is underlain by different bedrock type. The purpose of this research was to quantify and compare the episodic variability in storm flow chemis
Authors
Anne K. O'Brien, Karen C. Rice, Margaret M. Kennedy, Owen P. Bricker
Acid Rain
Acid deposition, or acid rain as it is more commonly referred to, has become a widely publicized environmental issue in the U.S. over the past decade. The term usually conjures up images of fish kills, dying forests, "dead" lakes, and damage to monuments and other historic artifacts. The primary cause of acid deposition is emission of S02 and NOx to the atmosphere during the combustion of fossil f
Authors
Owen P. Bricker, Karen C. Rice
Ground-water hydrology of the upper Sevier River Basin, south-central Utah, and simulation of ground-water flow in the valley-fill in Panguitch Valley.
The ground-water hydrology of the upper Sevier River basin, primarily of the unconsolidated valley-fill aquifers, was studied from 1988 to 1989. Recharge to the valley-fill aquifers is mostly by seepage from surface-water sources. Changes in soil-moisture content am water levels were measured in Panguitch Valley both at a flood-irrigated and at a sprinkler-irrigated alfalfa field to quantify seepa
Authors
Susan A. Thiros, William C. Brothers
Research and education to improve surface and ground-water quality of a claypan soil--Proceedings of agricultural research to protect water quality
No abstract available.
Authors
E.E. Alberts, D. W. Blevins, N. K. Kitchen, Tony Prato
Organic carbon sources and sinks in San Francisco Bay: variability induced by river flow
Sources and sinks of organic carbon for San Francisco Bay (California, USA) were estimated for 1980. Sources for the southern reach were dominated by phytoplankton and benthic microalgal production. River loading of organic matter was an additional important factor in the northern reach. Tidal marsh export and point sources played a secondary role. Autochthonous production in San Francisco Bay ap
Authors
Alan D. Jassby, T.M. Powell, James E. Cloern
Coupled effects of vertical mixing and benthic grazing on phytoplankton populations in shallow, turbid estuaries
Coastal ocean waters tend to have very different patterns of phytoplankton biomass variability from the open ocean, and the connections between physical variability and phytoplankton bloom dynamics are less well established for these shallow systems. Predictions of biological responses to physical variability in these environments is inherently difficult because the recurrent seasonal patterns of
Authors
Jeffrey R. Koseff, Jacqueline K. Holen, Stephen G. Monismith, James E. Cloern