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Page 538, results 13426 - 13450

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Well yields and chemical quality of water from water-table aquifers in the greater Denver area, Front Range urban corridor, Colorado
D. E. Hillier, P. A. Schneider Jr., E. C. Hutchinson
1983, IMAP 856-J
Knowledge of the well yields and chemical quality of water from water-table aquifers is useful to State and local officials in making decisions on land use and in locating water supplies in the rapidly urbanizing greater Denver are. This report presents the results of a 2-year investigation to obtain this...
Hydrology of Area 61, Northern Great Plains and Rocky Mountain Coal Provinces, Colorado and New Mexico
P.O. Abbott, Arthur L. Geldon, Doug Cain, Alan P. Hall, Patrick Edelmann
1983, Water-Resources Investigations Report 83-132
Area 61 is located on the Colorado-New Mexico boundary in Huerfano and Las Animas Counties, Colorado, and Colfax County, New Mexico, and includes the Raton Mesa coal region. The 5 ,900-square-mile area is an asymmetrical structural trough bounded by the Rocky Mountains on the west and the Great Plains on...
Structure, temperature, pressure, and salinity of Cenozoic aquifers of south Texas
John B. Wesselman
1983, Hydrologic Atlas 654
A study of the hydrogeology of deep sedimentary basins using the Neogene deposits of the northern Gulf of Mexico basin as a model was initiated by the U.S. Geological Survey in the 1960's (Jones, 1969). This study led to investigations of geopressured-geothermal resources in this basin (Papadopulos and others, 1975;...
Hydrology of the Ogallala aquifer in Ford County, southwestern Kansas
J. M. Spinazola, M.T. Dealy
1983, Water-Resources Investigations Report 83-4226
The rapid increase of ground-water withdrawal has caused concern over the future use of the Ogallala aquifer, the principal source of water in Ford County, in southwestern Kansas. Saturated portions of deposits of Tertiary and Quaternary age--excluding the Arkansas River alluvium--form the Ogallala aquifer. Saturated thickness of the Ogallala ranged...
Automatic dilution gaging of rapidly varying flow
M.D. Duerk
1983, Water-Resources Investigations Report 83-4088
It is often difficult to obtain discharge ratings at urban gaging stations. This report presents the results of using an automated constant-rate dyedilution technique to measure discharge at two sites in Madison, Wisconsin. The sites selected have well-defined stage-discharge ratings, developed during previous hydrologic studies. One site has a 60-inch...
Hydrology and subsidence potential of proposed coal-lease tracts in Delta County, Colorado
Tom Brooks
1983, Water-Resources Investigations Report 83-4069
Potential subsidence from underground coal mining and associated hydrologic impacts were investigated at two coal-lease tracts in Delta County, Colorado. Alteration of existing flow systems could affect water users in the surrounding area. The Mesaverde Formation transmits little ground water because of the neglibile transmissivity of the 1,300 feet of...
Computer routines for probability distributions, random numbers, and related functions
W. Kirby
1983, Water-Resources Investigations Report 83-4257
Use of previously coded and tested subroutines simplifies and speeds up program development and testing. This report presents routines that can be used to calculate various probability distributions and other functions of importance in statistical hydrology. The routines are designed as general-purpose Fortran subroutines and functions to be called from...
Potential effects of surface coal mining on the hydrology of the Greenleaf-Miller area, Ashland coal field, southeastern Montana
G. W. Levings
1983, Water-Resources Investigations Report 82-4101
The Greenleaf-Miller area of the Ashland coal field contains reserves of Federal coal that have been identified for potential lease sale. A hydrologic study was conducted in the potential lease area in 1981 to describe the existing hydrologic system and to assess potential impacts of surface coal mining on local...
Water-level changes in the high plains regional aquifer, northwestern Oklahoma, predevelopment to 1980
J.S. Havens
1983, Water-Resources Investigations Report 83-4073
During 1978, the U.S. Geological Survey began a 5-year study of the High Plains regional aquifer system to provide hydrologic information for evaluation of the effects of long-term development of the aquifer and to develop computer models for prediction of aquifer response to alternative changes in ground-water management (Weeks, 1978)....
Aquifer systems in the Great Basin region of Nevada, Utah, and adjacent states: A study plan
James R. Harrill, Alan H. Welch, David E. Prudic, James M. Thomas, Rita L. Carman, Russell W. Plume, Joseph S. Gates, James L. Mason
1983, Open-File Report 82-445
The Great Basin Regional Aquifer Study includes about 140,000 square miles in parts of Nevada, Utah, California, Idaho, Oregon, and Arizona. Within that area, 240 hydrographic areas occupy structural depressions formed primarily by basin-and-range faulting. The principal aquifers are in basin- fill deposits; however, permeable carbonate rocks underlie valleys in...
Hydrology of the Newberry Volcano caldera, Oregon
E.A. Sammel, R. W. Craig
1983, Water-Resources Investigations Report 83-4091
Precipitation in the Newberry Caldera is very nearly in balance with evaporation, evapotranspiration, and streamflow. Calcium, magnesium, and bicarbonate ions predominate in the more dilute ground and surface water. Thermal waters from springs and wells have concentrations of 900 milligrams per liter or more and are characterized by high concentrations...
Hydrologic-data stations and lake levels, Kenai-Nikiski area, Alaska, 1983
Bonnie J. Bailey
1983, Open-File Report 83-938
The locations of 2 National Weather Service stations, 29 observation wells, 4 stream gages, and 12 lake-stage stations are depicted on a 1:63, 360-scale map. The periods of record and station descriptions are listed. Hydrographs depict water-level fluctuations of 12 lakes during the period 1970-1983. ...