Publications
All of our publications are accessible through the USGS Publication Warehouse. Publications by scientists of the Oregon Water Science Center are listed below.
Filter Total Items: 758
Estimation of ground-water recharge from precipitation, runoff into drywells, and on-site waste-disposal systems in the Portland Basin, Oregon and Washington
The average recharge rate in the Portland Basin, in northwestern Oregon and southwestern Washington, is estimated to be about 22.0 inches per year. Of that amount, precipitation accounts for about 20.8 inches per year, runoff into drywells 0.9 inches per year, and on-site waste disposal about 0.4 inches per year. Recharge is highest, about 49 inches per year, in the Cascade Range. Recharge is lowe
Authors
D.T. Snyder, D. S. Morgan, T.S. McGrath
Use of a precipitation-runoff model for simulating effects of forest management on streamflow in 11 small drainage basins, Oregon Coast Range
The Precipitation-Runoff Modeling System (PRMS) model of the U.S. Geological Survey was used to simulate the hydrologic effects of timber management in 11 small, upland drainage basins of the Coast Range in Oregon. The coefficients of determination for observed and simulated daily flow during the calibration periods ranged from 0.92 for the Flynn Creek Basin to 0.68 for the Priorli Creek Basin; pe
Authors
J. C. Risley
Application of a Geographic Information System for regridding a ground-water flow model of the Columbia Plateau Regional Aquifer System, Walla Walla River basin, Oregon-Washington
Computerized Geographic Information Systems (GIS) have become viable and valuable tools for managing,analyzing, creating, and displaying data for three-dimensional finite-difference ground-water flow models. Three GIS applications demonstrated in this study are: (1) regridding of data arrays from an existing large-area, low resolution ground-water model to a smaller, high resolution grid; (2) use
Authors
M.E. Darling, L.E. Hubbard
Reconnaissance investigation of water quality, bottom sediment, and biota associated with irrigation drainage in the Owyhee and Vale Projects, Oregon and Idaho, 1990-91
A reconnaissance investigation was conducted during 1990--91 in the Owyhee and Vale projects in eastern Oregon and southwestern Idaho, as well as at a number of sites in the Snake River and tributaries to the Snake River in the area of study. The objective of the study was to determine if agricultural drainwater entering the study area was causing, or had the potential to cause, significant harmfu
Authors
F. A. Rinella, W.H. Mullins, C.A. Schuler
Surface-water-quality assessment of the Yakima River basin in Washington: major-and minor-element data for sediment, water, and aquatic biota, 1987-91
Major- and minor-element concentrations are presented for streambed and suspended sediment, filtered- and unfiltered-water, and aquatic-biota samples collected during 1987-91 from the Yakima River Basin in south-central Washington. The samples were collected as part of the U.S. Geological Survey's National Water-quality Assessment (NAWQA) program which is designed to provide results that are usefu
Authors
Gregory J. Fuhrer, Shelley L. Fluter, Stuart W. McKenzie, Joseph F. Rinella, J. Kent Crawford, Daniel J. Cain, Michelle I. Hornberger, Jennifer L. Bridges, Kenneth A. Skach
Evaluation of organic compounds and trace elements in Amazon Creek Basin, Oregon, September 1990
Water and bottom sediment were collected from Amazon Creek, Oregon during a summer low-flow condition and analyzed for different classes of organic compounds, including many from the U.S. Environmental Protection Agency's priority pollutant list. Bottom sediment also was analyzed for trace elements typically associated with urban runoff. Trace-element concentrations in the less than 63 micrometer
Authors
F. A. Rinella
Use of a rainfall-runoff model for simulating effects of forest management on streamflow in the east fork Lobster Creek basin, Oregon
No abstract available.
Authors
L.Y. Nakama, J. C. Risley
Summary appraisal of water resources of the Umatilla Indian Reservation
No abstract available.
Authors
J. B. Gonthier, E.L. Bolke
Estimated average annual ground-water pumpage in the Portland Basin, Oregon and Washington 1987-88
Data for ground-water pumpage were collected during an inventory of wells in 1987-88 in the Portland Basin located in northwestern Oregon and southwestern Washington. Estimates of annual ground-water pumpage were made for the three major categories of use: public supply, industry, and irrigation. A large rapidly expanding metropolitan area is situated within the Portland Basin, along with several
Authors
C. A. Collins, T.M. Broad
Preliminary evaluation of water-quality conditions of Johnson Creek, Oregon
No abstract available.
Authors
T.K. Edwards, D. A. Curtiss
Preliminary results of the simulation of Oregon coastal basins using precipitation-runoff modeling system (PRMS)
No abstract available.
Authors
R. L. Allen, Antonius Laenen
A review of possible causes of nutrient enrichment and decline of endangered sucker populations in Upper Klamath Lake, Oregon
Upper Klamath Lake, and the connecting Agency Lake, is a large (140 square mile) lake in south-central Oregon. The lake has a recent history of long-duration, near-monoculture, blue-green algal blooms of Aphanizomenon flos-aquae. Typically, the algal bloom causes nuisance and detrimental conditions, including a deep-green "pea soup" appearance, from mid-May to late October. Accompanying the blooms
Authors
Gilbert C. Bortleson, Marvin O. Fretwell