Geohydrology and Numerical Simulation of the Ground-Water Flow System of Molokai, Hawaii
Delwyn S. Oki
1997, Water-Resources Investigations Report 97-4176
A two-dimensional, steady-state, areal ground-water flow model was developed for the island of Molokai, Hawaii, to enhance the understanding of (1) the conceptual framework of the ground-water flow system, (2) the distribution of aquifer hydraulic properties, and (3) the regional effects of ground-water withdrawals on water levels and coastal discharge....
Water-quality assessment of part of the upper Mississippi River Basin, Minnesota and Wisconsin — Nitrogen and phosphorus in streams, streambed sediment, and ground water, 1971-94
Sharon E. Kroening, William J. Andrews
1997, Water-Resources Investigations Report 97-4107
Nitrogen and phosphorus in streams, streambed sediment, and ground water were summarized using data from Federal, state, and local agencies as part of an analysis of historical water-quality data for the Upper Mississippi River Basin study unit of the U.S. Geological Survey's National Water-Quality Assessment Program. The Upper Mississippi River...
Reinterpretation of the peninsular Florida Oligocene: An integrated stratigraphic approach
G. Lynn Wingard, T.M. Scott, Lucy E. Edwards, S.D. Weedman, K. R. Simmons
1997, Sedimentary Geology (108) 207-228
A very thick (> 300 m) nearly continuous Oligocene section exists in southern peninsular Florida, as revealed by lithostratigraphic, biostratigraphic (mollusks and dinocysts), chronostratigraphic (Sr isotopes) and petrographic analyses of twelve cores and two quarries. The Oligocene deposits in the subsurface of southern Florida are the thickest documented in the...
Volcano and earthquake hazards in the Crater Lake region, Oregon
Charles R. Bacon, Larry G. Mastin, Kevin M. Scott, Manuel Nathenson
1997, Open-File Report 97-487
Crater Lake lies in a basin, or caldera, formed by collapse of the Cascade volcano known as Mount Mazama during a violent, climactic eruption about 7,700 years ago. This event dramatically changed the character of the volcano so that many potential types of future events have no precedent there. This...
Fish communities of fixed sites in the Western Lake Michigan Drainages, Wisconsin and Michigan, 1993-95
D. J. Sullivan
1997, Water-Resources Investigations Report 95-4211-C
Fish communities were surveyed at 20 wadable stream sites during 1993-95 as part of the U.S. Geological Survey's (USGS) National Water- Quality Assessment (NAWQA) Program's assessment of the Western Lake Michigan Drainages. Part of the NAWQA design is to incorporate ecological data into an overall environmental assessment. Collection of fish-community...
Urbanization and recharge in the vicinity of East Meadow Brook, Nassau County, New York: Part 3 — Ground-water levels and flow conditions, 1988-93
M. P. Scorca, H. F. Fu
1997, Water-Resources Investigations Report 96-4265
No abstract available....
Transport of diazinon in the San Joaquin River basin, California
Charles R. Kratzer
1997, Open-File Report 97-411
Most of the application of the organophosphate insecticide diazinon in the San Joaquin River Basin occurs in winter to control wood boring insects in dormant almond orchards. A federal-state collaborative study found that diazinon accounted for most of the observed toxicity of San Joaquin River water to water fleas in...
Urbanization and recharge in the vicinity of East Meadow Brook, Nassau County, New York: Part 4 — Water quality in the headwaters area, 1988-93
C. J. Brown, M. P. Scorca, G. G. Stockar, Frederick Stumm, H. F. Ku
1997, Water-Resources Investigations Report 96-4289
Surface-water and ground-water quality in the East Meadow Brook headwaters area was monitored during 1988-93 to determine the effects of urban stormwater on water quality before, and for 1 year after, the construction of a stormwater-detention basin in 1992. Stormwater samples were collected from the stream during storms. Between storms,...
Volcano hazards at Newberry Volcano, Oregon
David R. Sherrod, Larry G. Mastin, William E. Scott, Steven P. Schilling
1997, Open-File Report 97-513
Newberry volcano is a broad shield volcano located in central Oregon. It has been built by thousands of eruptions, beginning about 600,000 years ago. At least 25 vents on the flanks and summit have been active during several eruptive episodes of the past 10,000 years. The most recent eruption 1,300...
Map showing the thickness and character of Quaternary sediments in the glaciated United States east of the Rocky Mountains: Northern and central plains states (90° to 102° west longitude)
D. R. Soller
1997, IMAP 1970-C
No abstract available....
Hydrogeologic framework and geochemistry of the Edwards aquifer saline-water zone, south-central Texas
George E. Groschen, Paul M. Buszka
1997, Water-Resources Investigations Report 97-4133
The Edwards aquifer supplies drinking water for more than 1 million people in south-central Texas. The saline-water zone of the Edwards aquifer extends from the downdip limit of freshwater to the southern and eastern edge of the Stuart City Formation. Water samples from 16 wells in the Edwards aquifer saline-water...
Digital simulation of ground-water flow in the Warwick Aquifer, Fort Totten Indian Reservation, North Dakota
Thomas B. Reed
1997, Water-Resources Investigations Report 97-4114
The demand for water from the Warwick aquifer, which underlies the Fort Totten Indian Reservation in northeastern North Dakota, has been increasing during recent years. Therefore, the Spirit Lake Sioux Nation is interested in resolving questions about the quantity and quality of water in the aquifer and in developing a...
Hydrogeologic evaluation of the Upper Floridan aquifer in the southwestern Albany area, Georgia
Debbie Warner
1997, Water-Resources Investigations Report 97-4129
A cooperative study by the Albany Water, Gas, and Light Commission and the U.S. Geological Survey was conducted to evaluate the hydrogeology of the Upper Floridan aquifer in an area southwest of Albany and west of the Flint River in Dougherty County, Ga. The study area lies in the Dougherty...
Flood of January 1997 in the Carson River Basin, California and Nevada
Karen A. Thomas, Rhea P. Williams
1997, Fact Sheet 183-97
Northern California and western Nevada were devastated by floods during January 1-3, 1997. Flood waters in the Carson River Basin (fig. 1) contributed to $55 million in projected damages in Douglas County and $19.5 million in Lyon County (Reno Gazette-Journal, 1997). Flooding in Douglas and Lyon Counties was extensive along...
Modified level II streambed-scour analysis for structure I-70-148-4528 crossing West Fork of East Fork Whitewater River in Wayne County, Indiana
R. L. Miller, B.A. Robinson, D. C. Voelker
1997, Open-File Report 97-313
Level II scour evaluations follow a process in which hydrologic, hydraulic, and sedient-transport data are evaluated to calculate the depth of scour that may result when given discharge is routed through a bridge opening. the results of the modified Levell II analysis for structure I-70-148-4528 on Interstate 70 crossing West...
Bedload and river hydraulics - Inferences from the East Fork River, Wyoming
Luna Bergere Leopold, William W. Emmett
1997, Professional Paper 1583
During 1973-79, bedload data were collected in a sophisticated trap on a river of moderate size, the East Fork. The transport rate was measured most days through a full snowmelt season, and the rate was determined separately for eight zones across the channel width. The quantitative data are unique and...
Petroleum geology of the state of Washington
Samuel Y. Johnson, Marilyn E. Tennyson, William S. Lingley, Ben E. Law
1997, Professional Paper 1582
This report describes the potential petroleum resources of Washington State as recently summarized in the 1995 U.S. Geological Survey National Assessment of Oil and Gas Resources. Eight conventional petroleum plays, three coal-bed gas plays, and two continuous-type gas plays are defined and characterized. Of these plays, the potential for significant...
Preliminary geologic map of the Simi 7.5' quadrangle, southern California: A digital database
R.F. Yerkes, R. H. Campbell
1997, Open-File Report 97-259
The Simi Quadrangle covers an area of about 62 square miles in southern Ventura County. The Santa Clara River Valley occupies the northwestern corner of the quadrangle. Mountainous terrain of South Mountain and Oak Ridge characterizes the northern and central area. Elevation within the quadrangle ranges from about 250 feet...
Rainfall and water-level data for a wetland area near Millington, Shelby County, Tennessee, October 1995 through September 1996
R.R. Knight
1997, Open-File Report 97-221
Rainfall amounts and water levels were collected at a wetland area near Millington, Shelby County, Tennessee, to assist the Tennessee Department of Transportation with a program of wetland restoration. The site is located along a channelized reach of Big Creek Drainage Canal, east of State Route 240, and near the...
Distribution of fish, benthic invertebrate, and algal communities in relation to physical and chemical conditions, Yakima River basin, Washington, 1990
T. F. Cuffney, M. R. Meador, S. D. Porter, M. E. Gurtz
1997, Water-Resources Investigations Report 96-4280
Biological investigations were conducted in the Yakima River Basin, Washington, in conjunction with a pilot study for the U.S. Geological Survey's National Water-Quality Assessment Program. Ecological surveys were conducted at 25 sites in 1990 to (1) assess water-quality conditions based on fish, benthic invertebrate, and algal communities; (2) determine the...
Modified level II streambed-scour analysis for structure I-69-87-4781 crossing Wabash River in Huntington County, Indiana
B.A. Robinson, D. C. Voelker, R. L. Miller
1997, Open-File Report 97-307
Level II scour evaluations follow a process in which hydrologic, hydraulic, and sediment transport data are evaluated to calculate the depth of scour that may result when a given discharge is routed through a bridge opening. The results of the modified Level II analysis for structure 1-69-87-4781 on Interstate 69...
Modified level II streambed-scour analysis for structure I-70-69-5185 crossing East Fork White Lick Creek in Hendricks County, Indiana
B.A. Robinson, D. C. Voelker, R. L. Miller
1997, Open-File Report 97-309
Level II scour evaluations follow a process in which hydrologic, hydraulic, and sediment transport data are evaluated to calculate the depth of scour that may result when a given discharge is routed through a bridge opening. The results of the modified Level II analysis for structure 1-70-69-5185 on Interstate 70...
Water quality in the Appalachian Valley and Ridge, the Blue Ridge, and the Piedmont Physiographic Provinces, eastern United States
L. I. Briel
1997, Professional Paper 1422-D
Chemical quality of ground water, spring water, and surface water differs substantially among the three physiographic provinces. Maps showing regional variations for 18 water properties and constituents are included in this Regional Aquifer System Analysis study report. Systematic variations in water quality are due to differences in geologic and hydrologic...
Hydraulic properties and ground-water flow in the St Peter-Prairie du Chien-Jordan aquifer, Rochester area, southeastern Minnesota
R. J. Lindgren
1997, Water-Resources Investigations Report 97-4015
The hydraulic properties were updated and their effects on ground-water flow in the St. Peter-Prairie du Chien-Jordan aquifer in the Rochester area in southeastern Minnesota were evaluated, using new information compiled since a study by Delin (1990). Since 1988, new information on the hydrogeology of the ground-water system in the...
Hydrogeology and ground-water quality of confined aquifers in buried valleys in Rock County, Minnesota and Minnehaha County, South Dakota
R. J. Lindgren
1997, Water-Resources Investigations Report 97-4029
Confined glacial and bedrock aquifers are present within Quaternary and Cretaceous deposits that fill buried valleys incised in the Sioux Quartzite surface in Rock County, in southwestern Minnesota and Minnehaha County, South Dakota. This report describes the areal extent, thickness, water-bearing characteristics, water-supply potential, and water-quality characteristics of confined aquifers...
