Publications
The following list of California Water Science Center publications includes both official USGS publications and journal articles authored by our scientists.
Filter Total Items: 1725
Surface-water quality-assurance plan for the California District of the U.S. Geological Survey
No abstract available.
Authors
Robert W. Meyer
Combined use of flowmeter and time-drawdown data to estimate hydraulic conductivities in layered aquifer systems
The vertical distribution of hydraulic conductivity in layered aquifer systems commonly is needed for model simulations of ground-water flow and transport. In previous studies, time-drawdown data or flowmeter data were used individually, but not in combination, to estimate hydraulic conductivity. In this study, flowmeter data and time-drawdown data collected from a long-screened production well an
Authors
R. T. Hanson, Tracy Nishikawa
Stratification dynamics and gravitational circulation in northern San Francisco Bay
No abstract available.
Authors
Stephen G. Monismith, Jon R. Burau, Mark T. Stacey
Climatic and hydrologic oscillations in the Owens Lake basin and adjacent Sierra Nevada, California
Oxygen isotope and total inorganic carbon values of cored sediments from the Owens Lake basin, California, indicate that Owens Lake overflowed most of the time between 52,500 and 12,509 carbon-14 (14C) years before present (B.P.). Owens Lake desiccated during or after Heinrich event H1 and was hydrologically closed during Heinrich event H2. The magnetic susceptibility and organic carbon content of
Authors
L. V. Benson, J.W. Burdett, Michaele Kashgarian, S.P. Lund, F. M. Phillips, R. O. Rye
Anthropogenic sediment resuspension mechanisms in a shallow microtidal estuary
The mechanisms that resuspend bottom sediments in Hillsborough Bay, a shallow, microtidal, subtropical estuary in West-central Florida, were determined by analysing hydrodynamic and suspended-solids concentration data collected during several instrument deployments made in 1990 and 1991. Large vessels in a dredged ship channel can generate forced solitary long waves that cause large water velociti
Authors
D. H. Schoellhamer
Pesticides and pesticide degradation products in stormwater runoff: Sacramento River Basin, California
Pesticides in stormwater runoff, within the Sacramento River Basin, California, were assessed during a storm that occurred in January 1994. Two organophosphate insecticides (diazinon and methidathion), two carbamate pesticides (molinate and carbofuran), and one triazine herbicide (simazine) were detected. Organophosphate pesticide concentrations increased with the rising stage of the hydrographs;
Authors
Joseph L. Domagalski
Copper, cadmium, and zinc concentrations in aquatic food chains from the Upper Sacramento River (California) and selected tributaries
Metals enter the Upper Sacramento River above Redding, California, primarily through Spring Creek, a tributary that receives acid-mine drainage from a US EPA Superfund site known locally as Iron Mountain Mine. Waterweed (Elodea canadensis) and aquatic insects (midge larvae, Chironomidae; and mayfly nymphs, Ephemeroptera) from the Sacramento River downstream from Spring Creek contained much higher
Authors
M. K. Saiki, D. T. Castleberry, T. W. May, B.A. Martin, F. N. Bullard
Land use and water use in the Antelope Valley, California
Urban land use and water use in the Antelope Valley, California, have increased significantly since development of the valley began in the late 1800's.. Ground water has been a major source of water in this area because of limited local surface-water resources. Ground-water pumpage is reported to have increased from about 29,000 acre-feet in 1919 to about 400,000 acre-feet in the 1950's. Completio
Authors
William E. Templin, Steven P. Phillips, Daniel E. Cherry, Myrna L. DeBortoli, T.C. Haltom, Kelly R. McPherson, C.A. Mrozek
Effects of two contrasting agricultural land uses on shallow groundwater quality in the San Joaquin Valley, California; design and preliminary interpretation
From 1992 through 1994, the San Joaquin-Tulare Basins Study team of the USGS National Water Quality Assessment program investigated the occurrence and distribution of water quality constituents in shallow groundwater underlying two areas of different agricultural land uses: almond orchards and vineyards. The study was restricted to the alluvial fans of the eastern San Joaquin Valley, the area of m
Authors
N. M. Dubrovsky, Karen R. Burow, Jo Ann M. Gronberg
Effects of geothermal development on deformation in the Long Valley Caldera, eastern California, 1985-1994
Long Valley caldera in east central California has been the site of crustal unrest in the form of seismicity and ground deformation in response to magmatic inflation since 1980. Uplift of the resurgent dome has totaled ∼0.6 m over the 1975–1992 period. Within this region of uplift, and near the southwestern edge of the resurgent dome, is the Casa Diablo area, which experienced relative subsidence
Authors
M. L. Sorey, C. D. Farrar, G. A. Marshall, J.F. Howie
Evidence of impaired reproduction by Western mosquitofish inhabiting seleniferous agricultural drainwater
Western mosquitofish Gambusia affinis from the San Luis Drain (SLD), a major conveyance system for seleniferous agricultural subsurface (tile) drainage water in the San Joaquin Valley, California, experienced lower reproductive success than did mosquitofish from a nearby reference area (Pond 26 at the Volta Wildlife Area, VOLTA) that had no history of receiving tile drainage. At birth, mean surviv
Authors
Michael K. Saiki, R. Scott Ogle
Deducing the distribution of terminal electron-accepting processes in hydrologically diverse groundwater systems
The distribution of microbially mediated terminal electron-accepting processes (TEAPs( was investigated in four hydrologically diverse groundwater systems by considering patterns of electron acceptor (nitrate, sulfate) consumption, intermediate product (hydrogen (H2)) concentrations, and final product (ferrous iron, sulfide, and methane) production. In each hydrologic system a determination of pre
Authors
Francis H. Chapelle, Peter B. McMahon, Neil M. Dubrovsky, Roger F. Fujii, Edward T. Oaksford, Don A. Vroblesky