Numerical simulation of ground-water flow in basin-fill material in Salt Lake Valley, Utah
P. M. Lambert
1995, Technical Publication 110-B
A three-dimensional, finite-difference, numerical model was developed to simulate ground-water flow in the basin-fill material in Salt Lake Valley, Utah. The model was calibrated to steady-state and transient-state conditions. The steady-state simulation was developed and calibrated using hydrologic data defining average conditions for 1968. The transient-state simulation was developed and...
Chemical composition of ground water, hydrologic properties of basin-fill material, and ground-water movement in Salt Lake Valley, Utah
Susan A. Thiros
1995, Technical Publication 110-A
The chemical composition and movement of ground water and hydrologic properties of the basin‑fill material were studied to better under‑ stand the flow system in Salt Lake Valley, Utah. Recharge sources and water‑rock interactions influence the water chemistry in the principal and shallow unconfined aquifers. Chloride concentration in water from...
Hydrology of Sanpete Valley, Sanpete and Juab Counties, Utah, and simulation of ground-water flow in the valley-fill aquifer
Dale E. Wilberg, V.M. Heilweil
1995, Technical Publication 113
The surface-and ground-water hydrology of Sanpete Valley and the San Pitch River drainage basin, Sanpete and Juab Counties, Utah, was studied to define the current conditions of the hydrologic system, to detect causes for downstream changes in water quality in the San Pitch River and in areas of high concentration...
Hydrology and simulation of ground-water flow in southern Utah and Goshen Valleys, Utah
L.E. Brooks, Bernard J. Stolp
1995, Technical Publication 111
The ground-water resources of southern Utah and Goshen Valleys were assessed from 1988 to 1993 to determine the effects that additional ground-water withdrawals would have on water levels, surface water, and water quality. Recharge, movement, and discharge of ground-water were emphasized. The main ground-water system in southern Utah and Goshen...
Hydrology of the Sevier-Sigurd ground-water basin and other ground-water basins, central Sevier Valley, Utah.
P. M. Lambert, J. L. Mason, R. W Puchta
1995, Technical Publication 103
The hydrologic system in the central Sevier Valley, and more specifically the Sevier-Sigurd basin, is a complex system in which surface- and ground-water systems are interrelated. Seepage from an extensive irrigation system is the primary source of recharge to the basin-fill aquifer in the Sevier-Sigurd basin.Water-quality data indicate that inflow...
Modeling and predicting intertidal variations of the salinity field in the Bay/Delta
Noah Knowles, Reginald J. Uncles
1995, Interagency Ecological Program Newsletter 8-10
San Francisco Bay and the Sacramento/San Joaquin Delta have challenged estuarine modelers for some years. Accurate, broad-scale models of this estuary have been in demand by those concerned with its ecological health and the development of sound management policies. A description and better understanding of the dynamics that govern the...
Pathway models could aid management of contaminants
S. N. Luoma
1995, Interagency Ecological Program Newsletter 6-8
Heavy metal and trace organic contaminants are often cited as factors that could affect the riclmess of the biological community of San Francisco Bay as well as the health of resident organisms. Silver (Ag), selenium (Se), mercury (Hg), copper (Cu), nickel (Ni), chromium (Cr), and cadmium (Cd) are among the...
Long-term hydrologic and biogeochemical responses of a soft water seepage lake in north central Wisconsin
Dennis A. Wentz, William J. Rose, Katherine E. Webster
1995, Water Resources Research (31) 199-212
Hydrologic and chemical budgets were determined for the period October 1980 through September 1988 for Vandercook Lake, a 43-ha soft water seepage lake located in predominantly sandy outwash in northern Wisconsin. The 1951–1980 mean annual precipitation for the lake, based on nearby National Weather Service (NWS) stations, was 825 mm;...
Transient hydrogeological controls on the chemistry of a seepage lake
David P. Krabbenhoft, Katherine E. Webster
1995, Water Resources Research (31) 2295-2305
A solute mass balance method was used to estimate groundwater inflow and outflow rates for Nevins Lake, Michigan, a seepage lake in the upper peninsula that historically has shown extremely variable water chemistry compared with most other seepage lakes. A 4-year study (1989–1992) of the hydrology and geochemistry of Nevins...
Modeling of multiphase multicontaminant transport in the subsurface
T.F. Russell
1995, Reviews of Geophysics (33) 1035-1047
This review addresses modeling of subsurface hydrological systems in which contaminants are transported in more than one fluid phase. The primary focus is on problems involving nonaqueous-phase liquids (NAPLs), a dynamic gas phase, or both, so that the unsaturated and saturated zones are both discussed. Basic research in simpler settings...
Recent advances in statistical methods for the estimation of sediment and nutrient transport in rivers
Timothy A. Cohn
1995, Reviews of Geophysics (33) 1117-1123
This paper reviews advances in methods for estimating fluvial transport of suspended sediment and nutrients. Research from the past four years, mostly dealing with estimating monthly and annual loads, is emphasized. However, because this topic has not appeared in previous IUGG reports, some research prior to 1990 is included. The...
Hydrologic modeling as a predictive basis for ecological restoration of salt marshes
C. T. Roman, R.W. Garvine, J. W. Portnoy
1995, Environmental Management (19) 559-566
Roads, bridges, causeways, impoundments, and dikes in the coastal zone often restrict tidal flow to salt marsh ecosystems. A dike with tide control structures, located at the mouth of the Herring River salt marsh estuarine system (Wellfleet, Massachusetts) since 1908, has effectively restricted tidal exchange, causing changes in marsh vegetation...
Development of a National Digital Geospatial Data Framework
Federal Geographic Data Committee
1995, Report
This proposal of a data framework to organize and enhance the activities of the geospatial data community to meet needs for basic themes of data was developed in response to a request in Executive Order 12906, Coordinating Geographic Data Acquisition and Access: The National Spatial Data Infrastructure (U.S. Executive Office...
Monitoring flooding in coastal wetlands by using radar imagery and ground-based measurements
Elijah Ramsey III
1995, International Journal of Remote Sensing (16) 2495-2502
Satellite radar was used in a Florida Juncus roemerianus marsh to map tidal flooding, a critical control of coastal vegetation distribution. Radar images taken during a time of near-continuous recordings of ground-based hydrology measurements directly linked marsh flooding to lowered radar returns and indicated a negative covariation between flood frequency and radar...
Atrazine in surface water and relation to hydrologic conditions within the Delaware River Basin Pesticide Management Area, Northeast Kansas, July 1992 through December 1994
Larry M. Pope
1995, Fact Sheet 196-95
Since about 1960, atrazine has been used as an effective pre- and postemergent herbicide in the production of corn and grain sorghum. Atrazine is a triazine-class herbicide and was the most frequently detected herbicide in surface water of the lower Kansas River Basin of southeast Nebraska and northeast Kansas (Stamer...
Waste burial in arid environments - Application of Information from a field laboratory in the Mojave Desert, Southern Nevada
Brian J. Andraski, David E. Prudic, William D. Nichols
1995, Fact Sheet 179-95
Because of the potentially harmful effect of improper waste disposal on water resources in the arid West, comprehensive laboratory and field studies are critical to identifying likely contaminant-release pathways and the potential for waste migration at arid sites. However, the quandary for those charged with assessment of the suitability of...
San Francisco Bay Program: Lessons learned for managing coastal water resources
James E. Cloern, Samuel N. Luoma, Frederic H. Nichols
1995, Fact Sheet 053-95
No abstract available....
Bioremediation: Nature's way to a cleaner environment
Frank H. Chapelle
1995, Fact Sheet 054-95
No abstract available....
Toxic Substances Hydrology Program
Mark T. Anderson, H. T. Buxton, D. A. Rickert, D.W. Morganwalp
1995, Fact Sheet 064-95
Documented and potential extreme peak discharges and relation between potential extreme peak discharges and probable maximum flood peak discharges in Texas
William H. Asquith, Raymond M. Slade Jr.
1995, Water-Resources Investigations Report 95-4249
The U.S. Geological Survey, in cooperation with the Texas Department of Transportation, conducted a study of extreme flood potential for Texas. Potential extreme peak discharges, derived from the relation between documented extreme peak discharges and their contributing drainage areas, can provide valuable information concerning the maximum expected peak discharge that...
Hydrologic data for the Weldon Spring chemical plant site and vicinity property, St. Charles County, Missouri, 1989-95
M. J. Kleeschulte
1995, Open-File Report 95-463
No abstract available....
Estimates of ground-water recharge rates for two small basins in central Nevada
R.W. Lichty, P. W. McKinley
1995, Water-Resources Investigations Report 94-4104
Estimates of ground-water recharge rates developed from hydrologic modeling studies are presented for 3-Springs and East Stewart basins. two small basins (analog sites) located in central Nevada. The analog-site studies were conducted to aid in the estimation of recharge to the paleohydrologic regime associated with ground water in the vicinity...
Physical and hydrologic properties of outcrop samples from a nonwelded to welded tuff transition, Yucca Mountain, Nevada
C.A. Rautman, L. E. Flint, A. L. Flint, J.D. Istok
1995, Water-Resources Investigations Report 95-4061
Quantitative material-property data are needed to describe lateral and vertical spatial variability of physical and hydrologic properties and to model ground-water flow and radionuclide transport at the potential Yucca Mountain nuclear-waste repository site in Nevada. As part of ongoing site characterization studies of Yucca Mountain directed toward this understanding of...
Conceptualization and simulation of runoff generation from rainfall for three basins in Thurston County, Washington
S.N. Berris
1995, Water-Resources Investigations Report 94-4038
A method to conceptualize and simulate the generation of runoff from rainfall was applied to three small drainage basins in north-central Thurston County, Washington. Because the study basins face continued urban development, this method was developed to provide a technique for assessing the effects of alternative urban-development plans on runoff...
Ground Water Atlas of the United States: Segment 2, Arizona, Colorado, New Mexico, Utah
Stanley G. Robson, Edward R. Banta
1995, Hydrologic Atlas 730-C
This chapter of the Ground Water Atlas of the United States describes the aquifers in Arizona, Colorado, New Mexico, and Utah. These four States, which comprise Segment 2 of this Atlas, are located in the Southwestern United States and extend from the rolling grasslands of the Great Plains on the...
