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Page 4618, results 115426 - 115450

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Simulated effects of proposed reservoir-development alternatives on streamflow quantity in the White River, Colorado and Utah
Gerhard Kuhn, S. R. Ellis
1984, Water-Resources Investigations Report 84-4297
Numerous reservoirs have been proposed for the White River basin in Colorado and Utah, primarily to provide water for oil-shale development. A multireservoir-flow model was used to simulate the effects of streamflow withdrawal at four of the proposed reservoirs using historical streamflow data from the 1932-81 water years. The proposed...
Hydrologic data for the Larimer-Weld regional water-monitoring program, Colorado, 1975-82
S. R. Blakely, J.T. Steinheimer
1984, Open-File Report 84-139
The Larimer-Weld, Colorado, regional Monitoring Program was begun in 1976 to provide information on the quality and quantity of the surface-water resources in the area. Three stations on the big Thompson River and five stations on the Cache La Poudre River were selected for a data-collection network. Four previously established...
Maps showing ground-water units and withdrawal, Basin and Range Province, Texas
B. T. Brady, M. S. Bedinger, John Mikels
1984, Water-Resources Investigations Report 83-4121-A
This report on ground-water units and withdrawal in the Basin and Range province of Texas (see index map) was prepared as part of a program of the U.S. Geological Survey to identify prospective regions for further study relative to isolation of high-level nuclear waste (Bedinger, Sargent, and Reed, 1984), utilizing...
The thrust belt in Southwest Montana and east-central Idaho
Edward T. Ruppel, David A. Lopez
1984, Professional Paper 1278
The leading edge of the Cordilleran fold and thrust in southwest Montana appears to be a continuation of the edge of the Wyoming thrust belt, projected northward beneath the Snake River Plain. Trces of the thrust faults that form the leading edge of the thrust belts are mostly concealed, but...
Igneous activity and related ore deposits in the western and southern Tushar Mountains, Marysvale volcanic field, west-central Utah
Thomas A. Steven, editor(s)
1984, Professional Paper 1299-A,B
PART A: Igneous activity in the Marysvale volcanic field of western Utah can be separated into many episodes of extrusion, intrusion, and hydrothermal activity. The rocks of the western Tushar Mountains, near the western part of the volcanic field, include intermediate-composition, calc-alkalic volcanic rocks erupted from scattered volcanoes in Oligocene...
Statistical relations among earthquake magnitude, surface rupture length, and surface fault displacement
M. G. Bonilla, R. K. Mark, J. J. Lienkaemper
1984, Open-File Report 84-256
In order to refine correlations of surface-wave magnitude, fault rupture length at the ground surface, and fault displacement at the surface by including the uncertainties in these variables, the existing data were critically reviewed and a new data base was compiled. Earthquake magnitudes were redetermined as necessary to make them...
Definition of boundary and initial conditions in the analysis of saturated ground-water flow systems; an introduction
O.L. Franke, T. E. Reilly, G.D. Bennett
1984, Open-File Report 84-458
Accurate definition of boundary and initial conditions is an essential part of conceptualizing and modeling ground-water flow systems. This report explains the properties of the seven most common boundary conditions encountered in ground-water systems and discusses major aspects of their application. It also discusses the significance and specification of initial...
Glastonbury Gneiss and mantling rocks (a modified Oliverian dome) in south-central Massachusetts and north-central Connecticut: Geochemistry, petrogenesis, and isotopic age
G. W. Leo, R. E. Zartman, D. G. Brookins
1984, Professional Paper 1295
The Glastonbury dome is a long, narrow structure trending approximately 70 km north-northeast through Connecticut and Massachusetts along the west side of the Bronson Hill anticlinorium. Structurally and stratigraphically the dome is analogous to the Oliverian domes of New Hampshire. It is cored by Glastonbury Gneiss and is mantled by...
Hydrologic effects of impoundments in Sherburne National Wildlife Refuge, Minnesota
R. G. Brown
1984, Water-Resources Investigations Report 84-4175
The hydrologic effects of proposed impoundments in Sherburne National Wildlife Refuge were found to be insignificant with respect to both ground- and surface-water flow patterns and water quality. Monitoring of water levels in 23 observation wells and of discharge in the St. Francis River during 1980 and 1981 has shown...