Grain size data compilation and parameters of sediment samples; lower Cook Inlet, Alaska, 1976 through 1979
Robert C. Orlando, Ann Martin
1981, Open-File Report 81-827
Lower Cook Inlet is the southern part of the large tidal inlet that connects Anchorage with the Pacific Ocean (fig. 1). During the summer field seasons of 1976, 1977, 1978, and 1979, the U.S. Geological Survey under contract with the Bureau of Land Management through the National Oceanic and Atmospheric...
Documentation and user's guide to the USGS oilspill risk analysis model: oilspill trajectories and calculation of conditional probabilities
Kenneth J. Lanfear, William B. Samuels
1981, Open-File Report 81-316
Hydrogeologic conditions in the coastal plain of New Jersey
Eric F. Vowinkel, W. Kendall Foster
1981, Open-File Report 81-405
A wedge-shaped mass of unconsolidated sediments composed of alternating layers of clay, silt, sand, and gravel underlies the Coastal Plain of New Jersey. The hydrologic units of this mass vary in thickness, lateral extent, lithology, and water-bearing characteristics. Some of the units act as aquifers, whereas other units act as...
Hydrogeology of well-field areas near Tampa, Florida; Phase I, development and documentation of a two-dimensional finite-difference model for simulation of steady-state ground-water flow
C. B. Hutchinson, Dale M. Johnson, James M. Gerhart
1981, Open-File Report 81-630
A two-dimensional finite-difference model was developed for simulation of steady-state ground-water flow in the Floridan aquifer throughout a 932-square-mile area, which contains nine municipal well fields. The overlying surficial aquifer contains a constant-head water table and is coupled to the Floridan aquifer by a leakage term that represents flow through...
Erosion and sedimentation in the Kenai River, Alaska
Kevin M. Scott
1981, Open-File Report 81-219
The Kenai River system is the most important freshwater fishery in Alaska. The flow regime is characterized by high summer flow of glacial meltwater and periodic flooding caused by sudden releases of glacier-dammed lakes in the headwaters. Throughout most of its 50-mile course across the Kenai Peninsula Lowlands to Cook...
Map showing aeromagnetic interpretation of the Baker-Cypress BLM Instant Study Area and Timbered Crater Forest Service Further Planning Areas, Modoc, Shasta, and Siskiyou counties, California
Andrew Griscom
1981, Miscellaneous Field Studies Map 1214-C
The data for the aeromagnetic map of the Baker-Cypress and Timbered crater areas were collected in 1978 and compiled at a scale of 1 :62,500 (U,S, Geological Survey, 1979). East-west traverses were spaced at 0.8-km intervals at a constant altitude of 1370 m (4500 ft) above sea level, Contour interval...
Map showing geothermal resources of the Lake City-Surprise Valley Known Geothermal Resource Area, Modoc County, California
1981, Miscellaneous Field Studies Map 1299
This report summarizes geothermal data from published and unpublished geophysical, geochemical, and geologic reports on Surprise Valley that have been prepared during the past 26 years. Particular emphasis is placed on a comprehensive structural interpretation of the west half of the valley that is based on map compilation of concealed...
Mineral resource potential of the Baker-Cypress BLM Instant Study Area and Timbered Crater Forest Service Further Planning (RARE II) Areas, Modoc, Shasta, and Siskiyou Counties, California
Jocelyn A. Peterson, L.M. Martin, L. E. Esparza, Gary J. Cwick
1981, Miscellaneous Field Studies Map 1214-B
In accordance with the provisions of the Federal Land Policy and Management Act (Public Law 94-579, October 21, 1976), the Geological Survey and the Bureau of Mines have conducted mineral surveys on certain areas, which formally had been identified as "natural" and "primitive" areas prior to November 1, 1975.The Wilderness...
Map showing mineral-resource potential of the King Range and Chemise Mountain Instant Study Areas, Humboldt and Mendocino counties, California
R. J. McLaughlin, D. H. Sorg, H.N. Ohlin, E.C. Beutner
1981, Miscellaneous Field Studies Map 1196-C
The potential for economic development of energy-related or metallic mineral resources in the King Range and Chemise Mountain Instant Study Areas is low to moderate as indicated by geologic, geophysical, and geochemical investigations. No oil or gas seeps or coal seams were detected within the King Range or Chemise Mountain Study...
The ecology of intertidal oyster reefs of the South Atlantic Coast: A community profile
Leonard M. Bahr, William P. Lanier
1981, FWS/OBS 81/15
The functional role of the intertidal oyster reef community in the southeastern Atlantic coastal zone is described. This description is based on a compilation of published data, as well as some unpublished information presented as hypotheses. The profile is organized in a hierarchical manner, such that relevant details of reef oyster...
Interpretation of an aerial radiometric survey of the San Gorgonio Wilderness Area and vicinity, San Bernardino County, California
James A. Pitkin, Joseph S. Duval
1981, Miscellaneous Field Studies Map 1161-B
The aerial radiometric data for the San Gorgonio Wilderness Area show slight correlation with mapped geology and contain no information of economic significance. Precambrian and modified Precambrian crystalline rocks have more eTh compared to Mesozoic plutonic rocks and one rock unit mapped as a pluton has slightly more K. These...
Seismic-reflection and sidescan-sonar data collected on the Potomac River, Maryland and Virginia, during May 1979
Harley J. Knebel
1981, Open-File Report 81-174
The U.S. Geological Survey collected 2,170 line kilometers of single-channel seismic-reflection profiles and sidescan sonar records on the Potomac River during R/V NEECHO cruise NE-3-79 in May 1979. The purposes of the survey were to define: (1) areas of sediment accumulation and erosion; (2) the thickness of Holocene sediments; (3)...
Development of a quantitative model of stress in a seismic region as a basis for earthquake prediction
Keiiti Aki, Keiichiro Ikeda
1981, Open-File Report 81-269
Hydrogeology, estimated impact, and regional well monitoring of effects of subsurface wastewater injection, Tampa Bay area, Florida
John J. Hickey
1981, Water-Resources Investigations Report 80-118
Six proposed injection sites are located in Pinellas County, Fla., and the city of St. Petersburg. Projected maximum injection rate, if all sites become operational, will be about 40 million gallons per day. The injection zone at the proposed sites is in a consistently dolomitized section of the Avon Park...
Map of water table in Graham County, northwestern Kansas, March 1979
Joseph M. Spinazola
1981, Open-File Report 81-333
A map of the water table in Graham County, prepared in collaboration with the U.S. Bureau of Reclamation, provides current (1980) information on water levels in the unconsolidated deposits. Graham County, an area of 900 square miles in northwestern Kansas, is within the rolling, moderately to well-dissected terrain on the...
Polychlorinated biphenyl transport in the Hudson River, New York
John T. Turk, David E. Troutman
1981, Water-Resources Investigations Report 81-9
Polychlorinated biphenyls (PCB's) have been entering the Hudson River estuary since 1951. Concentration and loading of PCB 's in the river below Waterford, N.Y., are controlled at present by resuspension of sediments containing these substances; therefore , until the amount of PCB 's in the sediments is significantly lowered, reduction...
Generalized altitude and configuration of the base of the High Plains regional aquifer, northwestern Oklahoma
John S. Havens
1981, Open-File Report 81-1117
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)....
Effects of irrigation pumping on the ground-water system in Newton and Jasper Counties, Indiana
Marcel P. Bergeron
1981, Water-Resources Investigations Report 81-38
Flow in the ground-water system in Newton and Jasper Counties, Indiana, was simulated in a quasi-three-dimensional model in a study of irrigation use of ground water in the two counties. The ground-water system consists of three aquifers: (1) a surficial coarse sand aquifer known as the Kankakee aquifer, (2) a...
Characterization of floodflows along the Arkansas River without regulation by Pueblo Reservoir, Portland to John Martin Reservoir, Southeastern Colorado
John R. Little, Daniel P. Bauer
1981, Water-Resources Investigations Report 80-97
The need for a method for estimating flow characteristics of flood hydrographs between Portland, Colo., and John Martin Reservoir has been promoted with the construction of the Pueble Reservoir. To meet this need a procedure was developed for predicting floodflow peaks, traveltimes, and volumes at any point along the Arkansas...
Rainfall-runoff modeling and preliminary regional flood characteristics of small rural watersheds in the Arkansas River basin in Colorado
Russell K. Livingston
1981, Water-Resources Investigations Report 80-112
Both recorded and synthetic rainfall-runoff and annual peak-discharge data for 17 rural watersheds were analyzed to evaluate the magnitude, frequency, and volume of floods in the plains region of the Arkansas River basin in Colorado. Flood-frequency relations from analysis of recorded data were weighted or combined with flood-frequency relations from...
Digital model of the unconsolidated aquifer system in the Modesto area, Stanislaus and San Joaquin Counties, California
Clark J. Londquist
1981, Water-Resources Investigations Report 81-12
A digital mathematical model of the unconsolidated alluvial aquifer system in the Modesto area, Calif., has been developed which can be used to determine the effects of increased pumping and water use of future water levels in the aquifer system. The model is divided into two units. The lower unit...
Hydrogeology of the Buffalo aquifer, Clay and Wilkin Counties, West-Central Minnesota
R. J. Wolf
1981, Water-Resources Investigations Report 81-4
The Buffalo aquifer is the principal source of ground-water supplies in the Moorhead, Minnesota area. The aquifer is an elongate deposit of sand and gravel, which locally contains water under confined conditions. Although the Buffalo aquifer contains about 270 billion gallons of water in storage, only 120 billion gallons could...
Modeled impacts of surface coal mining on dissolved solids in the Tongue River, southeastern Montana
Paul F. Woods
1981, Water-Resources Investigations Report 81-64
A computer model has been developed for spatial and temporal simulation of streamflow and dissolved solids in the Tongue River from the Tongue River Dam to Miles City, Montana. User-defined plans of surface coal mining and agricultural development permit evaluation of potential changes in dissolved solids resulting from leaching of...
Surface mine reclamation for wildlife: a model reclamation plan for southern Appalachia
Dale K. Fowler, Linda J. Turner
1981, FWS/OBS 81/09
Ground-water potential of the glacial deposits near Logansport, Cass County, Indiana
Daniel C. Gillies
1981, Water-Resources Investigations Report 81-7
The glacial deposits underlying a 260 square-mile area near Logansport, Indiana, range in thickness from 0 to 300 feet and consist of three semiconfined sand and gravel aquifer units separated and overlain by three semiconfining till units. The ground-water development potential of the lowest of the sand and gravel aquifers...
