Richard D. Koch, Raymond L. Elliott
1978, Open-File Report 78-156-A
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Publication Extents
Not all publications have extents, not all extents are completely accurateLeonard F. Konikow, M. S. Bedinger
1978, Open-File Report 78-27
The salt load in the Dolores River increases by about 200,000 tons per year where it crosses Paradox Valley, Colorado, because of the discharge of a sodium chloride brine from an underlying aquifer. A ground-water management program to nearly eliminate this major source of salt, which eventually enters the Colorado...
Leonard F. Konikow
1978, Open-File Report 78-138
The development of an interstate ground-water compact for the Madison aquifer in the Northern Great Plains may provide a framework to allocate equitably this large ground-water resource while avoiding possible future interstate legal conflicts. However, some technical problems will have to be resolved first. A compact designed to regulate or...
Bruce A. Kososki, Stephen L. Robbins, James W. Schmoker
1978, Open-File Report 78-696
Since 1972 the U.S. Geological Survey has been conducting a series of field evaluation studies in southeastern New Mexico for the Waste Management Division of the Department of Energy (formerly U.S. Energy Research and Development Administration). On the basis of these studies, a tentative site for a nuclear waste repository/disposal...
M. Dennis Krohn, Michael J. Abrams, Lawrence C. Rowan
1978, Open-File Report 78-585
Landsat Multispectral Scanner (MSS) images of the northwestern part of the Battle Mountain-Eureki, Nevada mineral belt were evaluated for distinguishing hydrothermally altered rocks associated with porphyry copper and disseminated gold deposits. Detection of altered rocks from Landsat is based on the distinctive spectral reflectance of limonite present at coatings on...
Mel A. Kuntz, John O. Kork
1978, Open-File Report 78-691
The Arco-Big Southern Butte area of the eastern Snake River Plain, Idaho, includes a volcanic rift zone and more than 70 Holocene and late Quaternary basalt volcanoes. The Arco volcanic rift zone extends southeast for 50 km from Arco to about 10 km southeast of Big Southern Butte. The rift...
T.E. Lamb
1978, Open-File Report 78-175
The results of a 1-year study of surface-water quality in the Tyronza River Watershed are presented to document conditions before implementation of Soil Conservation Service programs. The report includes a general description of the watershed's topography, geology, and aquifers, and the results of monthly measurements of discharge at five sites,...
William H. Langer, Stephen F. Obermeier
1978, Open-File Report 78-779
Landsliding is a common problem in eastern Fairfax County, an area underlain by Potomac Group (Lower Cretaceous) Coastal Plain deposits of silt and clay interbedded and interfingered with sand and gravel. The slides commonly are present in clay and silt that, on the basis of laboratory tests, appear to be...
E.G. Lappala, P.F. Hemphill, R.E. Booker
1978, Open-File Report 78-461
Surface-water supplies are diminishing in the Hitchcock-Red Willow and Frenchman Valley Irrigation Districts in southwest Nebraska. Stream depletions due to ground-water withdrawals upstream from Enders Reservoir (northwest of the study area) have resulted in a shortage of about 8,700 acre-feet per year. The availability of ground water to supply part...
J. D. Larson
1978, Open-File Report 78-719
Water samples were collected and stream discharges were measured at 49 sites in Fairfax County, Virginia during a period of low flow in August 1977. In addition, pesticide and metal content of residue on stream-bottom sediments from several major streams in the county were analysed. Waters from the streams in...
J. D. Larson
1978, Open-File Report 78-144
The U. S. Geological Survey's National Center is on a 105-acre tract straddling rocks of two distinct types. These are pelitic schists of late Precambrian and early Paleozoic age; and sandstone, shale, siltstone, and conglomerate of Triassic age. Within the Triassic part is a diabase dike and an associated contact...
S. P. Larson
1978, Open-File Report 79-202
Myung W. Lee
1978, Open-File Report 78-270
Robert B. Leonard, Tordis M. Brosten, Norman A. Midtlyng
1978, Open-File Report 78-438
During 1975-77 the Montana district of the U.S. Geological Survey collected and assembled data describing the flow, temperature, and chemical characteristics of thermal and related waters. The work was part of an assessment of the geothermal resources of southwestern Montana, excluding Yellowstone Park. The purpose of this report is to...
Robert B. Leonard, Ronald R. Shields, Norman A. Midtlyng
1978, Open-File Report 78-199
Water quality in and adjacent to geothermal lease-application areas near Chico and Hunters Hot Springs was investigated during two surveys in October 1976 and April 1977. The resulting data were needed to evaluate the effects of proposed geothermal exploration and development on the Yellowstone River and its tributaries.Waters from the...
Harold L. Leone, Alton J. Dupuy
1978, Open-File Report 78-792
Five core-material-sampling sites were chosen by the U.S. Army Corps of Engineers to represent areas of proposed dredging activity. Four receiving-water sites also were selected to represent the water that will contact the proposed dredged material. Chemical and physical analyses were performed upon core material and native-water samples from these...
Joel S. Leventhal, Joan K. Jennings, Alan J. Lemke
1978, Open-File Report 78-235
Samples from Summit County, Colo., were fractionated for analyses of organic content and uranium. The uranium is related to organic content but not to type of organic matter. In one area uranium values are around 100 ppm in bulk samples and as much as 200 ppm in certain separated fractions...
Roy C. Lindholm
1978, Open-File Report 78-512
The Potomac Group sands sampled in Fairfax County are dominantly microcline-rich lithic arkoses. Quartz averages 59%, microcline 25%, plagioclase less than 1% and lithic grains 16%. Most sands are texturally submature and medium grained. Microcline is somewhat more abundant in the deeper beds in the subsurface than in the shallow...
David A. Lindsey, Lee M. Osmonson
1978, Open-File Report 78-114
A mineralized area near Blawn Mountain in the southern Wah Wah Range has potential for deposits of lithophile metals, including uranium, tin, molybdenum, and beryllium. An area of iron oxide, alunite, and kaolinite alteration in rhyolite on Blawn Mountain overlaps southward with an area of fluorite, montmorillonite, and illite alteration...
David A. Lockner, John D. Weeks, J.D. Byerlee
1978, Open-File Report 78-125
Ben Elder Lofgren
1978, Open-File Report 78-597
Geodetic surveys since 1972-73 reveal significant crustal deformation in The Geysers-Clear Lake region. Resurveys of precise control networks are measuring both vertical and horizontal ground movement, with most of the change continuing in the area of geothermal fluid withdrawal. Preliminary evidence suggests right-lateral horizontal movement on northwest-trending fault systems and...
J. D. Love, Ann Coe Christiansen, Laura W. McGrew
1978, Open-File Report 78-343
No abstract available....
Robert W. Luce, James R. O’Neil, Robert O. Rye
1978, Open-File Report 78-388
No abstract available....
Richard Lumia, Bernard Dunn
1978, Open-File Report 78-85
A flood-stage and discharge analysis was made for a 3.61 mile reach of Ninemile Creek between Amboy and Camillus. Water-surface profiles were developed for 50-year, 100-year, and September 26, 1975 flood discharges at Camillus for four different channel conditions: (1) with four culverts at Camillus bypass and a bridge at...
Richard Lumia
1978, Open-File Report 78-348
As a supplement to a 1975 report, titled "Floodflow Characteristics at Proposed Bridge Site on Mohawk River, Whitesboro, New York," by Bernard Dunn (U.S. Geological. Survey open-file report), in which the hydraulic effects of two alternative highway plans during a large-magnitude flood were evaluated, a hydraulic analysis was made for...