Groundwater flow and solute movement to drain laterals, western San Joaquin Valley, California: 2. Quantitative hydrologic assessment
John L. Fio, S. J. Deverel
1991, Water Resources Research (27) 2247-2257
Groundwater flow modeling was used to quantitatively assess the hydrologic processes affecting ground water and solute movement to drain laterals. Modeling results were used to calculate the depth distribution of groundwater flowing into drain laterals at 1.8 m (drain lateral 1) and 2.7 m (drain lateral 2) below land surface....
Water resources data, New Mexico, water year 1990
Water Resources Division, U.S. Geological Survey
1991, Water Data Report NM-90
This annual hydrologic data report of New Mexico is one of a series of annual reports that document hydrologic data gathered from the U.S. Geological Survey's surface- and ground-water data-collection networks in each State, Puerto Rico, and the Trust Territories. These records of streamflow, ground-water levels, and water quality provide the...
Geology of caves
I.M. Morgan
1991, Report
A cave is a natural opening in the ground extending beyond the zone of light and large enough to permit the entry of man. Occurring in a wide variety of rock types and caused by widely differing geological processes, caves range in size from single small rooms to intercorinecting passages...
Approaches to the conservation of coastal wetlands in the Western Hemisphere
K.L. Bildstein, G.T. Bancroft, P.J. Dugan, D.H. Gordon, R.M. Erwin, E. Nol, L.X. Payne, Stanley E. Senner
1991, The Wilson Bulletin (103) 218-254
Coastal wetlands rank among the most productive and ecologically valuable natural ecosystems on Earth. Unfortunately, they are also some of the most disturbed. Because they are productive and can serve as transportation arteries, coastal wetlands have long attracted human settlement. More than half of the U.S. population currently lives within...
Sedimentary facies and depositional environments of early Mesozoic Newark Supergroup basins, eastern North America
J. P. Smoot
1991, Palaeogeography, Palaeoclimatology, Palaeoecology (84) 369-423
The early Mesozoic Newark Supergroup consists of continental sedimentary rocks and basalt flows that occupy a NE-trending belt of elongate basins exposed in eastern North America. The basins were filled over a period of 30–40 m.y. spanning the Late Triassic to Early Jurassic, prior to the opening of the north...
Channel evolution and hydrologic variations in the Colorado River basin: Factors influencing sediment and salt loads
A. Gellis, R. Hereford, S. A. Schumm, B.R. Hayes
1991, Journal of Hydrology (124) 317-344
Suspended-sediment and dissolved-solid (salt) loads decreased after the early 1940s in the Colorado Plateau portion of the Colorado River basin, although discharge of major rivers - the Colorado, Green and San Juan - did not change significantly. This decline followed a period of high sediment yield caused by arroyo cutting....
Hydrogeologic inferences from drillers' logs and from gravity and resistivity surveys in the Amargosa Desert, southern Nevada
W. J. Oatfield, J.B. Czarnecki
1991, Journal of Hydrology (124) 131-158
The Amargosa Desert of southern Nevada, in the Basin and Range province, is hydraulically downgradient from Yucca Mountain, the potential site of a repository for high-level nuclear waste. Groundwater flow paths and flow rates beneath the Amargosa Desert are controlled in part by the total saturated thickness and the hydraulic...
Detectability of the effects of a hypothetical temperature increase on the Thornthwaite moisture index
G. J. McCabe Jr., D.M. Wolock
1991, Journal of Hydrology (125) 25-35
Climatic changes that result from increasing concentrations of atmospheric carbon dioxide may affect the availability of water for vegetation, groundwater recharge, runoff, and human consumption. Most studies of the effects of climatic change on water resources focus on changes in mean characteristics of hydrologic variables and do not consider the...
Geohydrologic, geochemical, and geologic controls on the occurrence of radon in ground water near Conifer, Colorado, USA
E. Lawrence, E. Poeter, R. Wanty
1991, Journal of Hydrology (127) 367-386
Integrated studies of geohydrology, geochemistry, and geology of crystalline rocks in the vicinity of Conifer, Colorado, reveal that radon concentrations do not correlate with variations in concentrations of other dissolved species. Concentrations of major ions show systematic variations along selected groundwater flowpaths, whereas radon concentrations are dependent on local geochemical...
Effects of wetlands creation on groundwater flow
B.R. Hensel, M.V. Miller
1991, Journal of Hydrology (126) 293-314
Changes in groundwater flow were observed near four Experimental Wetland Areas (EWAs) constructed along a reach of the Des Plaines River in northeastern Illinois. These changes were observed during monthly monitoring of groundwater elevation in nested piezometers and shallow observation wells before and after the wetlands were filled with water....
A comparison of short-term measurements of lake evaporation using eddy correlation and energy budget methods
D.I. Stannard, D.O. Rosenberry
1991, Journal of Hydrology (122) 15-22
Concurrent short-term measurements of evaporation from a shallow lake, using eddy correlation and energy budget methods, indicate that sensible and latent heat flux between lake and atmosphere, and energy storage in the lake, may vary considerably across the lake. Measuring net radiation with a net radiometer on the lake appeared...
The temperature dependence of ponded infiltration under isothermal conditions
J. Constantz, F. Murphy
1991, Journal of Hydrology (122) 119-128
A simple temperature-sensitive modification to the Green and Ampt infiltration equation is described; this assumes that the temperature dependence of the hydraulic conductivity is reciprocally equal to the temperature dependence of the viscosity of liquid water, and that both the transmission zone saturation and the wetting front matric potential gradient...
National water summary 1988–89 — Hydrologic events and floods and droughts
1991, Water Supply Paper 2375
National Water Summary 1988-89 - Hydrologic Events and Floods and Droughts documents the occurrence in the United States, Puerto Rico, and the U.S. Virgin Islands of two types of extreme hydrologic events floods and droughts on the basis of analysis of stream-discharge data. This report details, for the first time,...
Hydrologic monitoring in the area of the Tennessee-Tombigbee Waterway, Mississippi-Alabama, fiscal year 1988
Fred Morris III
1991, Open-File Report 91-511
National Water-Quality Assessment Program - Western Lake Michigan Drainage Basin
J.O. Setmire
1991, Open-File Report 91-161
In 1991 , the U.S. Geological Survey (USGS) began to implement a full -scale National Water-Quality Assessment (NA WQA) program. The long-term goal of the NA WQA program are to desc ribe the tatus and trends in the quality of a large, representative part of the Nation's urface- and ground-water...
Geochemical investigation of an oil spill in San Francisco Bay, California
F. D. Hostettler, J. B. Rapp, K.A. Kvenvolden
1991, Open-File Report 91-130
No abstract available....
System requirements specification for the U.S. Geological Survey's National Water Information System II
Sharon B. Mathey, editor(s)
1991, Open-File Report 91-525
The U.S. Geological Survey's Water Resources Division is designing and developing a new computer software system for processing and storing hydrologic data. This system, the National Water Information System (NWIS-II) will replace the current water-data and information systems: the National Water Data Storage and Retrieval System (WATSTORE), the National Water...
Hydrologic monitoring in the area of the Tennessee-Tombigbee Waterway, Mississippi-Alabama, fiscal year 1989
Fred Morris III
1991, Open-File Report 91-520
Hydrology of the Texas Gulf Coast aquifer systems
Paul D. Ryder, Ann F. Ardis
1991, Open-File Report 91-64
A complex, multilayered ground-water flow system exists in the Coastal Plain sediments of Texas. The Tertiary and Quaternary clastic deposits have an areal extent of 114,000 square miles onshore and in the Gulf of Mexico. Two distinct aquifer systems are recognized within the sediments, which range in thickness from a...
Hydrologic changes associated with the Loma Prieta earthquake in the San Lorenzo and Pescadero drainage basins
Stuart Rojstaczer, Stephen Wolf
1991, Open-File Report 91-567
Assessment of hydrogeologic conditions with emphasis on water quality and wastewater injection, Southwest Sarasota and West Charlotte counties, Florida
C. B. Hutchinson
1991, Open-File Report 90-709
No abstract available....
Geologic and hydrologic data collected at test well NC-5, Barceloneta, Puerto Rico
Jesús Rodríguez-Martínez, John L. Hartley, Arturo Torres-Gonzalez
1991, Open-File Report 90-390
Geologic and hydrologic data collected at test holes NC-1 and NC-3, Guaynabo and San Juan, eastern Puerto Rico
Jesús Rodríguez-Martínez, Richard A. Scharlach, Arturo Torres-Gonzalez
1991, Open-File Report 91-217
Hydrologic monitoring in the area of the Tennessee-Tombigbee Waterway, Mississippi-Alabama, fiscal year 1990
Fred Morris III
1991, Open-File Report 91-521
History of the applications and development Section of the Hydrologic Instrumentation Facility, Gulf Coast Hydroscience Center, Stennis Space Center, Mississippi
S.E. Rickly
1991, Open-File Report 90-380
