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Page 581, results 14501 - 14525

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Hydrologic maps and data in the Mimbres Basin, New Mexico
John S. McLean
1977, Open-File Report 77-314
This report was prepared by the U.S. Geological Survey in cooperation with the New Mexico State Engineer Office and lists well and spring data, including well locations, water levels, well yields, and chemical analyses of well and spring water. Maps in the report show well locations, water-level contours, and water-level...
The United States Geological Survey in Alaska: Organization and status of programs in 1977
Kathleen M. Blean, editor(s)
1977, Circular 751-A
United States Geological Survey projects in Alaska include a wide range of topics of economic and scientific interest. Studies in 1976 include economic geology, regional geology, stratigraphy, environmental geology, engineering geology, hydrology, and marine geology. Discussions of the findings or, in some instances, narratives of the course of the investigations...
Ground-water hydrology and subsurface migration of radioisotopes at a low-level solid radioactive-waste disposal site, West Valley, New York
David E. Prudic, Allan D. Randall
1977, Open-File Report 77-566
Burial trenches for disposal of solid radioactive waste at West Valley, N.Y., are excavated in till that has very low hydraulic conductivity (about 5 x 10 to the minus 8th power centimeters per second). Fractures and root tubes with chemically oxidized and (or) reduced soil in their walls extend to...
Hydrologic data for Little Elm Creek, Trinity River basin, Texas, 1975
R.M. Slade Jr., J.M. Taylor
1977, Open-File Report 77-83
This report contains rainfall, runoff, and storage data collected during the 1975 water year for a 75.5 sq mi area above the stream-gaging station Little Elm Creek near Aubrey, Texas. Floodflows from 35.7 sq mi of the area are regulated by 16 floodwater-retarding structures constructed by the Soil Conservation Service....
The United States Geological Survey in Alaska: Accomplishments during 1976
Kathleen M. Blean, editor(s)
1977, Circular 751-B
United States Geological Survey projects in Alaska include a wide range of topics of economic and scientific interest. Studies in 1976 include economic geology, regional geology, stratigraphy, environmental geology, engineering geology, hydrology, and marine geology. Discussions of the findings or, in some instances, narratives of the course of the investigations...
Solution of three-dimensional groundwater flow equations using the strongly implicit procedure
P.C. Trescott, S. P. Larson
1977, Journal of Hydrology (35) 49-60
A three-dimensional numerical model has been coded to use the strongly implicit procedure for solving the finite-difference approximations to the ground-water flow equation. The model allows for: (1) the representation of each aquifer and each confining bed by several layers; and (2) the use of an anisotropic hydraulic conductivity at...
Hydrologic characteristics of the Madison Limestone, the Minnelusa Formation, and equivalent rocks as determined by well-logging formation evaluation, Wyoming, Montana, South Dakota, and North Dakota
William J. Head, Richard H. Merkel
1977, Journal of Research of the U.S. Geological Survey (5) 473-485
Geophysical logs from wells distributed throughout the Powder River Basin were digitized, processed, and interpreted to get a regional understanding of the lithologic and ground-water characteristics of aquifers in the Madison Limestone and Minnelusa Formation. The percentage of sand, porosity, and apparent ground-water resistivity of the Minnelusa closely follow structural...
Paleohydrologic phenomena recorded by lake sediments
Thomas C. Winter, H.E. Wright Jr.
1977, Earth and Space Science (58) 188-196
Hydrologic phenomena are dynamic, so their understanding and prediction are difficult and challenging. Many are cyclic, ranging from diurnal, seasonal, and annual cycles to climatic fluctuations of many hundreds or thousands of years. Predicting the magnitude and recurrence intervals of long-term fluctuations of these phenomena is a primary...
Disposal of saltwater during well construction--Problems and solutions
William A. Pitt Jr., Frederick W. Meyer, John E. Hull
1977, Groundwater (15) 276-283
The recent interest in the disposal of treated sewage effluent by deep-well injection into salt-water-filled aquifers has increased the need for proper disposal of salt water as more wells are drilled and tested each year.The effects on an unconfined aquifer of the improper disposal of salt water associated with the...
The age of groundwater in the Lincolnshire Limestone, England and its relevance to the flow mechanism
R.A. Downing, D. B. Smith, F.J. Pearson, R.A. Monkhouse, R.L. Otlet
1977, Journal of Hydrology (33) 201-216
Groundwater samples from the Lincolnshire Limestone have been analysed for tritium, radiocarbon, and the stable-isotope ratios 13C12C">13C12C, 18O16O">18O16O and D/H. The age of the water increases in a downgradient direction below overlying confining deposits and reaches a maximum age greater than...
Geohydrology of Muscatine Island, Muscatine County, Iowa
R.E. Hansen, W. L. Steinhilber
1977, Water Supply Bulletin 11
Muscatine Island is a wide segment of the west bank of the Mississippi River flood plain that covers about 50 square miles in Muscatine and Louisa Counties; the project area encompasses the 30 square miles in Muscatine County. The flood plain is underlain by thick, permeable alluvial deposits that comprise...
Classification of the hydrologic settings of lakes in the north central United States
Thomas C. Winter
1977, Water Resources Research (13) 753-767
The hydrologic settings of 150 lakes in the north central United States were investigated by principal component analysis as a first attempt to develop a general classification of the hydrologic settings of lakes. Precipitation-evaporation balance and the water quality variables have high loadings on the first principal component. Highest loadings...
Geochemical and hydrologic data for wells and springs in thermal-spring areas of the Appalachians
W.A. Hobba Jr., J.C. Chemerys, D.W. Fisher, F. J. Pearson Jr.
1977, Water-Resources Investigations Report 77-25
Current interest in geothermal potential of thermal-spring areas in the Appalachians enhances the value of data on thermal springs and wells in these areas. This report presents maps showing locations of selected springs and wells and tables of physical and chemical data pertaining to these wells and springs. The chemical...
Hydrochemistry of the Lake Magadi basin, Kenya
B.F. Jones, H.P. Eugster, S.L. Rettig
1977, Geochimica et Cosmochimica Acta (41) 53-72
New and more complete compositional data are presented for a large number of water samples from the Lake Magadi area, Kenya. These water samples range from dilute inflow (<0.1 g/kg dissolved solids) to very concentrated brines (>300 g/kg dissolved solids). Five distinct hydrologic stages can be recognized in the evolution...
Characteristics of aquifers in the northern Uinta Basin area, Utah and Colorado
J. W. Hood
1976, Technical Publication 53
This report presents a part of the results of an investigation of the hydrology of the northern Uinta Basin area by the U.S. Geological Survey in cooperation with the Division of Water Rights, Utah Department of Natural Resources. The purpose of the report is to summarize the hydraulic and geohydrologic...
Man against volcano: The eruption on Heimaey, Vestmann Islands, Iceland
R.S. Williams Jr., J.G. Moore
1976, Report
The U.S. Geological Survey carries out scientific studies in the geological, hydrological, and cartographic sciences generally within the 50 states, but also in cooperation with scientific organizations in many foreign countries for the investigation of unusual earth science phenomena throughout the world. The following material discusses the impact of the...
Stratigraphic and hydrologic relationship of the Piney Point aquifer and the Alloway Clay Member of the Kirkwood Formation in New Jersey
Bronius Nemickas, Louis D. Carswell
1976, Journal of Research of the U.S. Geological Survey (4) 1-7
Coarse quartzose (clastic) sediments of middle and late Eocene age in the subsurface of southern New Jersey are identified in this report as the Piney Point aquifer. The sediments are as thick as 220 feet (67 metres) and form a freshwater aquifer which is laterally continuous with the Piney Point...
Mathematical model of the West Bolsa Ground-water Basin, San Benito County, California
Robert E. Faye
1976, Water-Resources Investigations Report 76-71
Simulation of the West Bolsa ground-water basin hydrology in California had provided values of basin recharge and discharge and nodally distributed values of transmissivity and storage coefficient. Average net recharge from April 1945 to March 1969 was 6.2 cubic feet per second and occurred as subsurace recharge and infiltration of...
Summary appraisals of the nation's ground-water resources – Great Basin region
Thomas E. Eakin, Don Price, J. R. Harrill
1976, Professional Paper 813-G
Ground-water withdrawals by wells in the Great Basin Region were about 1.1 million acre-feet (1,360 cubic hectometres) in 1970. Most of these withdrawals were from 87 of the 234 hydrographic areas in the region. Withdrawals ranged from about 1,000 acre-feet (1.2 cubic hectometres) to more than 100,000 acre-feet (123 cubic...