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Reconnaissance investigation of sediment distribution, erosion, and transport in the upper Deschutes River, Deschutes County, Oregon, November 1986
K. A. Cameron, J. J. Major
1987, Water-Resources Investigations Report 87-4114
A preliminary investigation of sediment distribution, erosion, and transport in the upper Deschutes River was conducted in response to the perceived problem that brown trout spawning gravels were being rendered unusable due to an accumulation of fine-grained sediment. Contrary to the contention that channel gravels are being covered by fine-grained...
Comparison of irrigation pumpage with change in ground-water storage in the High Plains aquifer in Chase, Dundy, and Perkins counties, Nebraska, 1975-83
F.J. Heimes, C.F. Ferrigno, E. D. Gutentag, R.R. Lucky, D.M. Stephens, J.B. Weeks
1987, Water-Resources Investigations Report 87-4044
The relation between pumpage and change in storage was evaluated for most of a three-county area in southwestern Nebraska from 1975 through 1983. Initial comparison of the 1975-83 pumpage with change in storage in the study area indicated that the 1 ,042,300 acre-ft of change in storage was only about...
Regional ground-water discharge to large streams in the upper coastal plain of South Carolina and parts of North Carolina and Georgia
W. R. Aucott, R.S. Meadows, G. G. Patterson
1987, Water-Resources Investigations Report 86-4332
Base flow was computed to estimate discharge from regional aquifers for six large streams in the upper Coastal Plain of South Carolina and parts of North Carolina and Georgia. Aquifers that sustain the base flow of both large and small streams are stratified into shallow and deep flow systems. Base-flow...
Low-flow-frequency characteristics for continuous-record streamflow stations in Minnesota
A.D. Arntson, D. L. Lorenz
1987, Water-Resources Investigations Report 86-4353
Annual and summer (May 1 to September 30) low-flow frequency curves are presented for 175 continuous-record streamflow stations in Minnesota. The curves were developed for all stations with 10 or more years of continuous record. The 1-, 7-, and 30-day low-flow discharges at selected recurrence intervals obtained from these curves...
An assessment of low flows in streams in northeastern Wyoming
G.W. Armentrout, J.F. Wilson
1987, Water-Resources Investigations Report 85-4246
Low flows were assessed and summarized in the following basins in northeastern Wyoming: Little Bighorn, Tongue, Powder, Little Missouri, Belle Fourche, Cheyenne, and Niobrara River, and about 200 river miles of the North Platte River and its tributaries. Only existing data from streamflow stations and miscellaneous observation sites during the...
Roughness coefficients for densely vegetated flood plains
G.J. Arcement, V.R. Schneider
1987, Water-Resources Investigations Report 83-4247
Although much research has been done on Manning 's roughness coefficients for stream channels, very little has been done on the selection of roughness values for densely vegetated flood plains. In this report four method for determining roughness coefficients for flood plains are examined and evaluated. Field data were collected...
A conceptual framework for ground-water solute-transport studies with emphasis on physical mechanisms of solute movement
Thomas E. Reilly, O. Lehn Franke, Herbert T. Buxton, Gordon D. Bennett
1987, Water-Resources Investigations Report 87-4191
Analysis of solute transport in groundwater systems involves a complex, multi-discipline study that requires intensive and costly investigation. Groundwater contamination, particularly from point sources, has been growing in importance in recent years. This report examines the physical mechanisms of solute transport, advection and dispersion, and explains how they relate to...
Potentiometric surface of the Magothy Aquifer in southern Maryland during the Fall of 1986
F. K. Mack, D. C. Andreasen, S. E. Curtin, J. C. Wheeler
1987, Water-Resources Investigations Report 87-4216
The potentiometric map is highlighted with indications concerning: (1) outcrop areas of the Magothy aquifer; (2) the potentiometric contour of the aquifer; (3) observation and/or supply wells yielding < 10,000 gallons/day (gpd); and (4) other supply wells with yields > 10,000 gpd. (Lantz-PTT)...
Potentiometric surface of the Aquia Aquifer in southern Maryland during the Fall of 1986
F. K. Mack, D. C. Andreasen, S. E. Curtin, J. C. Wheeler
1987, Water-Resources Investigations Report 87-4214
Thr potentiometric map is highlighted with indications concerning: (1) outcrop areas of the Aquia aquifer; (2) the potentiometric contour of the aquifer; (3) observation and/or supply wells yielding < 10,000 gallons/day (gpd); and (4) other supply wells with yields > 10,000 gpd. (Lantz-PTT)...
Seismicity map of the state of Georgia
B. Glen Reagor, C. W. Stover, S. T. Algermissen, L.T. Long
1987, Miscellaneous Field Studies Map 1060
This map is one of a series of seimicity maps produced by the U.S. Geological Survey that show earthquake data of individual states or groups of states at the scale of 1:1,000,000.  This map shows only those earthquakes with epicenters located within the boundaries of Georgia, even though earthquakes in...
Overview of water resources in Owens Valley, California
L.S. Rogers
1987, Water-Resources Investigations Report 86-4357
In 1982-84, a water resources appraisal of Owens Valley was made by using available hydrologic information. Results of the appraisal provided an overview of water resources in Owens Valley; a better understanding of the groundwater system; and a framework for additional studies. Owens Valley is in east-central California and is...
Habitat Suitability Index Models: Barred owl
Arthur W. Allen
1987, FWS/OBS 82/10.143
A review and synthesis of existing information were used to develop a Habitat Suitability Index (HSI) model for the barred owl (Strix varia). The model consolidates habitat use information into a framework appropriate for field application, and is scaled to produce an index between 0.0 (unsuitable habitat) to 1.0 (optimum...