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Page 1493, results 37301 - 37325

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Not all publications have extents, not all extents are completely accurate
Cost effectiveness of the stream-gaging program in northeastern California
S.H. Hoffard, V.F. Pearce, Gary D. Tasker, W.H. Doyle
1984, Water-Resources Investigations Report 84-4127
Results are documented of a study of the cost effectiveness of the stream-gaging program in northeastern California. Data uses and funding sources were identified for the 127 continuous stream gages currently being operated in the study area. One stream gage was found to have insufficient data use to warrant cooperative...
Use of the routing procedure to study dye and gas transport in the West Fork Trinity River, Texas
Harvey E. Jobson, R. E. Rathbun
1984, Water Supply Paper 2252
Rhodamine-WT dye, ethylene, and propane were injected at three sites along a 21.6-kilometer reach of the West Fork Trinity River below Fort Worth, Texas. Complete dye concentration versus time curves and peak gas concentrations were measured at three cross sections below each injection. The peak dye concentrations were located and...
Storage analyses for ephemeral streams in semiarid regions
K. C. Glover
1984, Water-Resources Investigations Report 83-4078
A model has been developed for determining the probability of a reservoir being unable to provide a specified downstream water supply. By applying the model with a number of assumed storage capacities, the long-term water supply potential of a stream below a reservoir can be evaluated. Previous methods for determining...
Hydrology of Prairie Dog Creek Valley, Norton Dam to state line, north-central Kansas
L.E. Stullken
1984, Water-Resources Investigations Report 84-4162
Development of water resources has been a major factor in the economy of Prairie Dog Creek Valley in north-central Kansas. Releases from Norton Reservoir to the Almena Irrigation District averaged 6,900 acre-feet per year during 1967-76. The number of irrigation wells increased from 4 to 147 during 1947-78. Ground water...
Conceptual hydrologic model of flow in the unsaturated zone, Yucca Mountain, Nevada
P.M. Montazer, W.E. Wilson
1984, Water-Resources Investigations Report 84-4345
The unsaturated volcanic tuffs beneath Yucca Mountain, Nevada, are being evaluated as a host rock for a potential repository for high-level radioactive waste. A conceptual hydrologic model is proposed to describe the flow of fluids through these rocks. Thickness of the unsaturated zone is about 500 to 750 meters and...
Availability of ground water from the alluvial aquifer on the Nisqually Indian Reservation, Washington
W. E. Lum II
1984, Water-Resources Investigations Report 83-4185
A digital model using finite-difference techniques was constructed to simulate ground-water flow in an alluvial aquifer on the Nisqually Indian Reservation. The maximum long-term rate of pumping from individual wells, based on available data, is about 0.75 cubic feet per second (340 gallons per minute). Data on the extent, hydraulic...
Statistical models for estimating flow characteristics of Michigan streams
D. J. Holtschlag, H.M. Croskey
1984, Water-Resources Investigations Report 84-4207
Multiple-regression equations were developed to estimate flow characteristics at ungaged sites. Several readily measureable basin characteristics and an areal adjustment factor are required in the equations. Equations have been prepared to estimate mean and mean monthly flow, flow duration, low flow, peak flow, and flood volume. The precision of the...
Habitat Suitability Index Models: Pronghorn
Arthur W. Allen, John G. Cook, Michael J. Armbruster
1984, FWS/OBS 82/10.65
This is one of a series of publications that provide information on the habitat requirements of selected fish and wildlife species. Literature describing the relationship between habitat variables related to life requisites and habitat suitability for the pronghorn (Antilocapra americana) are synthesized. These data are subsequently used to develop Habitat Suitability Index (HSI) models. The...
Comment on the International Atomic Energy Agency Report on the Advisory Group Meeting on Stable Isotope Reference Samples for Geochemical and Hydrological Investigation, Vienna, Austria, September 19-21, 1983
T.B. Coplen, Irving Friedman, J. R. O’Neil
1984, Water-Resources Investigations Report 84-4136
According to U.S. Geological Survey records, a report prepared by R. Gonfiantini summarizing the findings and recommendations of the 1983 Advisory Group Meeting on Stable Isotope Reference Samples for Geochemical and Hydrologic Investigations held in Vienna does not accurately represent the consultants ' consensus on three important points. The consultants...
Habitat Suitability Index Models: Rainbow trout
Robert F. Raleigh, Terry Hickman, R. Charles Solomon, Patrick C. Nelson
1984, FWS/OBS 82/10.60
A review and synthesis of existing information were used to develop riverine and lacustrine habitat models for rainbow trout (Salmo gairdneri), a freshwater species. The models are scaled to produce an index of habitat suitability between 0 (unsuitable habitat) to 1 (optimally suitable habitat) for freshwater areas of the continental...
Habitat Suitability Index Models: Great egret
Brian R. Chapman, Rebecca J. Howard
1984, FWS/OBS 82/10.78
The great egret, also called common egret or American egret, is a large white heron tn the order Ciconiiformes, family Ardeidae. Great egrets stand 94.0-104.1 cm (37-41 inches) tall and have a wing spread to 139.7 cm (55 inches) (Terres 1980). The species is associated with streams, ponds, lakes, mud...
AQUIFEM-SALT; a finite-element model for aquifers containing a seawater interface
C.I. Voss
1984, Water-Resources Investigations Report 84-4263
Described are modifications to AQUIFEM, a finite element areal ground-water flow model for aquifer evaluation. The modified model, AQUIFEM-SALT, simulates an aquifer containing a freshwater body that freely floats on seawater. Parts of the freshwater lens may be confined above and below by less permeable units. Theory, code modifications, and...
Projected water-level declines in the Ogallala aquifer in Lea County, New Mexico
D. P. McAda
1984, Water-Resources Investigations Report 84-4062
A two-dimensional digital ground-water flow model was constructed of the Ogallala aquifer in Lea County, New Mexico. Simulations of predevelopment steady-state and historical pumping conditions were used to fit the model. Projections of water-level declines were made based on the condition of no additional development and the condition of a...
Preliminary estimate of possible flood elevations in the Columbia River at Trojan Nuclear Power Plant due to failure of debris dam blocking Spirit Lake, Washington
D. L. Kresch, Antonius Laenen
1984, Water-Resources Investigations Report 83-4197
Failure of the debris dam, blocking the outflow of Spirit Lake near Mount St. Helens, could result in a mudflow down the Toutle and Cowlitz Rivers into the Columbia River. Flood elevations at the Trojan Nuclear Power Plant on the Columbia River, 5 mi upstream from the Cowlitz River, were...
Analysis of the effects of proposed pumping from the principal artesian aquifer, Savannah, Georgia area
R.B. Randolph, R.E. Krause
1984, Water-Resources Investigations Report 84-4064
A two-dimensional finite-difference model of the principal artesian aquifer in the Savannah, Georgia, area, originally developed by Counts and Krause (1976), has been expanded and refined. The model was updated and the grid redesigned to provide more current and accurate detail for ground-water resources management alternatives. Improvements in the definition...
Flood frequency and storm runoff of urban areas of Memphis and Shelby County, Tennessee
B.L. Neely
1984, Water-Resources Investigations Report 84-4110
Techniques are presented for estimating the magnitude and frequency of peak discharges and storm runoff on stream in urban areas of Memphis, Tennessee. Comprehensive analyses were made in which physical characteristics of streams are related to snythetic flood characteristics at gaging stations. Equations derived from analyses provide estimates of peak...
Ground-water resources of the Mattapoisett River aquifer, Plymouth County, Massachusetts: Summary for water-resource managers
Virginia De Lima, Julio C. Olimpio
1984, Water-Resources Investigations Report 84-4023
Proposed increases in municipal pumpage in the Mattapoisett River valley will triple ground-water withdrawals in the next two decades. Because of State and local concern about the long-term effects of these withdrawals on ground-water levels and streamflow, a digital ground-water-flow model was developed to assist water-resource management. Ten development scenarios...
Flood-discharge profiles of selected streams in Rockland County, New York
Richard Lumia
1984, Water-Resources Investigations Report 84-4049
Flood-discharge profiles of 10 streams in Rockland County at six recurrence intervals ranging from 2 to 100 years are presented. Synthetic flood-frequency estimates were derived for nine rainfall-runoff sites from calibrated models; observed flood-frequency estimates were derived for three sites having long-term discharge records. A variance-weighting technique was applied to...
Summary of results of an investigation to define the geohydrology and simulate the effects of large ground-water withdrawals on the Mississippi River alluvial aquifer in northwestern Mississippi
D. M. Sumner, B. E. Wasson
1984, Water-Resources Investigations Report 84-4343
The 7,000 square-mile Mississippi River alluvial plain in north-western Mississippi (the Delta) is underlain by the prolific Mississippi River alluvial aquifer that currently (1983) yields about 1,100 Mgal/d of water to irrigation wells. Commonly, about 20 feet of clay underlying the Delta land surface is underlain by about 80 to...
An assessment of cumulative impacts of coal mining on the hydrology in part of the Powder River structural basin, Wyoming: A progress report
P. R. Jordan, R. M. Bloyd, P. B. Daddow
1984, Water-Resources Investigations Report 83-4235
The U.S. Geological Survey and the Wyoming Department of Environmental Quality are involved in a cooperative effort to assess the probable cumulative impacts of coal mining on the hydrology of a part of the Powder River Structural Basin in Wyoming. It was assumed that the principal impacts on the ground-water...