Annual compilation and analysis of hydrologic data for Pin Oak Creek, Trinity River basin, Texas, 1969
B.B. Hampton, D.R. Myers
1971, Open-File Report 71-144
The U.S. Soil Conservation Service is actively engaged in the installation of flood and soil erosion reducing measures in Texas under the authority of "The Flood Control Act of 1936 and 1944" and "Watershed Protection and Flood Prevention Act" (Public Law 566), as amended. The Soil Conservation Service has found...
Analysis of ground-water system in Orange County, California, by use of an electrical analog model
William F. Hardt, E. H. Cordes
1971, Open-File Report 71-145
Hydrologic data for Horseshoe Lake, Arkansas and vicinity
A. G. Lamonds
1971, Open-File Report 71-177
During the summer and fall, seepage and evaporation losses from Horseshoe Lake, an oxbow or an 'old river' lake adjacent to the Mississippi River, exceed inflow to the lake, and seasonal declines of 2.5-3.0 feet in the lake level are common. In exceptionally dry years, the minimum lake level has...
Progress report on the analog model study of the Magothy Aquifer in the Annapolis, Maryland area
Frederick K. Mack
1971, Open-File Report 71-194
Analog model study of the ground-water basin of the upper Coachella Valley, California
Stephen J. Tyley
1971, Open-File Report 71-287
Suggested criteria for hydrologic design of storm-drainage facilities in the San Francisco Bay Region, California
Saul Edward Rantz
1971, Open-File Report 71-341
This report presents basic criteria, in the form of tables and graphs, for each of the four methods of hydrologic design most commonly used in the San Francisco Bay region--flood-frequency analysis, Rational Method, unit-hydrograph method, and runoff simulation by means of hydrologic basin modeling. The term "hydrologic design" as used...
Data for wells in the Modesto-Merced area, San Joaquin Valley, California
Gary O. Balding, R. W. Page
1971, Open-File Report 72-11
The Modesto-Merced area is in the northeastern part of the San Joaquin Valley. The area includes about 1,800 square miles that lie in the eastern portions of Merced and Stanislaus Counties. Specifically the boundaries are: North, the Stanislaus River; south, the Merced-Madera County line; east, the Merced-Mariposa and the Stanislaus-Tuolumne...
The relation of turbulence to diffusion in open-channel flows
Thomas N. Keefer
1971, Open-File Report 72-206
This investigation examines the interrelation between turbulent diffusion, dispersion, and the statistical properties of turbulence in an open-channel flow. The experiments were conducted in a 3. 87- foot wide flume over four boundary roughnesses. The results are from studies made of: (1) the influence of turbulence on the vertical and...
Annual compilation and analysis of hydrologic data for Calaveras Creek, San Antonio River basin, Texas 1970
D.R. Reddy
1971, Open-File Report 72-307
The U.S. Soil Conservation Service is actively engaged in the installation of flood and soil erosion reducing measures in Texas under the authority of "The Flood Control Act of 1936 and 1944" and ''Watershed Protection and Flood Prevention Act" (Public Law 566), as amended. The Soil Conservation Service has found...
Annual compilation and analysis of hydrologic data for Honey Creek, Trinity River Basin, Texas, 1969
J.N. Sansom
1971, Open-File Report 72-328
The U.S. Soil Conservation Service is actively engaged in the installation of flood and soil erosion reducing measures in Texas under the authority of ''The Flood Control Act of 1936 and 1944" and ''Watershed Protection and Flood Prevention Act" (Public Law 566), as amended. The Soil Conservation Service has found...
Techniques for assessing water resource potentials in the developing countries: with emphasis on streamflow, erosion and sediment transport, water movement in unsaturated soils, ground water, and remote sensing in hydrologic applications
George C. Taylor Jr.
1971, Open-File Report 72-375
Hydrologic instrumentation and methodology for assessing water-resource potentials have originated largely in the developed countries of the temperature zone. The developing countries lie largely in the tropic zone, which contains the full gamut of the earth's climatic environments, including most of those of the temperate zone. For this reason, most...
Hydrogeologic characteristics of the valley-fill aquifer in the Arkansas River Valley, Bent County, Colorado
R. Theodore Hurr, John E. Moore
1971, Report
The investigation on which this report is based is a part of a comprehensive evaluation of the water resources of the Arkansas River valley undertaken by the U.S. Geological Survey in cooperation with the Colorado Water Conservation Board and the Southeastern Colorado Water Conservancy District. The study reach extends 150...
Impact breccias in carbonate rocks, Sierra Madera, Texas
H. G. Wilshire, Keith A. Howard, Terry W. Offield
1971, GSA Bulletin (82) 1009-1018
Two main types of deformational breccia occur in the Sierra Madera cryptoexplosion structure: monolithologic breccias composed of shattered rock of a single lithology and mixed breccias composed of rocks of several lithologies. Monolithologic breccias generally show no mineralogic signs of shock deformation, but a few samples are shatter-coned in a...
Tertiary igneous chronology of the Great Basin of western United States — Implications for tectonic models
Edwin H. McKee
1971, Bulletin of the Geological Society of America (82) 3497-3501
The chronology of igneous activity in the Great Basin of western United States is used as a time framework for a simple plate model. This chronology suggests that a plate (Farallon plate) became underthrust to sufficient depth by the middle Tertiary to trigger the eruption...
Ground-water pumpage in parts of Merced, Madera, Fresno, Kings, and Tulare Counties, California, 1962-66
Hugh T. Mitten, William Ogilbee
1971, Report
Quantitative estimates of ground-water pumpage from the principal ground-water basins in California are necessary for future appraisal studies, for constructing hydrologic models, and for systematic planning of water use and conservation. Methods of estimating pumpage for this report are based on metered pumpages, on electric-power consumption and fuel consumption by...
Tectonics of the Mendocino triple junction
Eli A. Silver
1971, Bulletin of the Geological Society of America (82) 2965-2977
Interpretation of reflection profiles and of the magnetic anomaly pattern over the Gorda Basin and Escarpment gives broad agreement with the triple junction model of McKenzie and Morgan (1969). However, the basin has undergone internal deformation, a local departure from rigid plate tectonics, and the...
Effects of karst features on circulation of water in carbonate rocks in coastal areas
V. T. Stringfield, H. E. LeGrand
1971, Journal of Hydrology (14) 139-157
The normal balance between fresh water in coastal aquifers and sea water applies also to carbonate-rock aquifers that have been karstified, but there are local modifications in the balance that need to be considered. Uneven distribution of permeability, expressed by a network of...
A method for discriminating between biogenic and chemical origins of the ore-stage pyrite in a roll-type uranium deposit
C. G. Warren
1971, Economic Geology (66) 919-928
Some roll-type uranium deposits are marginal to an altered tongue in sandstone beds that originally contained more-or-less uniformly distributed pyrite. Mineralizing solutions percolated through the sandstone, oxidized nearly all the pre-existing pyrite, and then redeposited part of the pyrite downstream in an embryonic ore zone....
The effect of salinity on the maximum thermal gradient of a hydrothermal system at hydrostatic pressure
John L. Haas Jr.
1971, Economic Geology (66) 940-946
The effect of salinity on the temperature-depth relations of a brine of constant composition, enclosed in a vein system, but freely connected to the surface, and everywhere at the boiling point for the hydrostatic head, was calculated by using a mathematical model. The Na-Ca-K-Cl brines...
Geochemical interpretations of groundwater flow systems
William Back, Bruce B. Hanshaw
1971, Journal of the American Water Resources Association (7) 1008-1016
Interest in the geochemistry of groundwater is increasing owing to the great number of current projects involving underground liquid waste storage, artificial recharge of potable water, accidental contamination of groundwater bodies, sanitary landfills, and pollution monitoring. Geochemical techniques used to facilitate the understanding of a groundwater...
Investigation of magnetization and density of a north Atlantic seamount using Poisson's theorem
Lindrith Cordell, Patrick Taylor
1971, Geophysics (36) 919-937
The relationship between the gravitational and magnetic potentials caused by a uniform distribution of mass and magnetization may be used to obtain independent information about these physical properties. The general relationship in the frequency domain between the Fourier transforms of the gravity and magnetic anomaly...
Geologic setting of the Apollo 14 samples
G.A. Swann, N.J. Trask, M. H. Hait, R. L. Sutton
1971, Science (173) 716-719
The Apollo 14 lunar module landed in a region of the lunar highlands that is part of a widespread blanket of ejecta surrounding the Mare Imbrium basin. Samples were collected from the regolith developed on a nearly level plain, a ridge 100 meters high, and a blocky ejecta deposit around...
Tertiary limestone aquifer system in the southeastern states
H. E. LeGrand, V. T. Stringfield
1971, Economic Geology (66) 701-709
The hydrogeologic history of the Tertiary limestone system of the Southeastern States is reconstructed, especially as it relates to circulation of ground water and the development of solution cavities. The development of these solution cavities resembles in many respects the development of cavities in carbonates...
A geochemical hypothesis for dolomitization by ground water
B.B. Hanshaw, W. Back, R.G. Deike
1971, Economic Geology (66) 710-724
Most modern disordered dolomite has been found in dynamic environments. However, solutions associated with modern dolomite formation do not have a common Mg/Ca ratio; the ratio ranges from about 3 to 100. Ground-water circulation may have a significant role in formation of regional dolomites; one of the primary requirements for...
Models of mineralized solution-collapse structures from drilling statistics: An aid to exploration
H. Wedow Jr.
1971, Economic Geology (66) 770-776
Variations in thickness and metal content of selected stratigraphic units cut by drill holes in the East Tennessee zinc districts have been analyzed by regression techniques. Such analysis demonstrated that as the thickness of an underlying limestone unit is decreased chiefly by solution thinning, overlying fine-grained dolomite units increase in...
