Tidal-flow, circulation, and flushing changes caused by dredge and fill in Tampa Bay, Florida
Carl R. Goodwin
1987, Water Supply Paper 2282
Tampa Bay, Florida, underwent extensive physical changes between 1880 and 1972 because of construction of causeways, islands, channels, and shoreline fills. These changes resulted in a progressive reduction in the quantity of tidal water that enters and leaves the bay. Dredging and filling also changed the magnitude and direction of...
Technique for estimating flood-peak discharges and frequencies on rural streams in Illinois
G.W. Curtis
1987, Water-Resources Investigations Report 87-4207
Flood-peak discharges and frequencies are presented for 394 gaged sites in Illinois, Indiana, and Wisconsin for recurrence intervals ranging from 2 to 100 years. A technique is presented for estimating flood-peak discharges at recurrence intervals ranging from 2 to 500 years for nonregulated streams in Illinois with drainage areas ranging...
Water resources of the Rio Grande de Añasco-lower valley, Puerto Rico
Jose Raul Diaz, Donald G. Jordan
1987, Water-Resources Investigations Report 85-4237
A large amount of water suitable for most uses is available in the lower Rio Grande de Anasco Valley, the major source of which is the Rio Grande de Anasco which contributes about 95% of the surface water inflow to the lower valley. River flow at El Espino exceeds 100...
Habitat Suitability Index Models: Barred owl
Arthur W. Allen
1987, FWS/OBS 82/10.143
A review and synthesis of existing information were used to develop a Habitat Suitability Index (HSI) model for the barred owl (Strix varia). The model consolidates habitat use information into a framework appropriate for field application, and is scaled to produce an index between 0.0 (unsuitable habitat) to 1.0 (optimum...
Sensitivity analysis of a multilayer, finite-difference model of the southeastern Coastal Plain regional aquifer system: Mississippi, Alabama, Georgia, and South Carolina
Meribeth Pernik
1987, Water-Resources Investigations Report 87-4108
The sensitivity of a multilayer finite-difference regional flow model was tested by changing the calibrated values for five parameters in the steady-state model and one in the transient-state model. The parameters that changed under the steady-state condition were those that had been routinely adjusted during the calibration process as part...
Habitat Suitability Index Models: Black-shouldered kite
Craig A. Faanes, Rebecca J. Howard
1987, FWS/OBS 82/10.130
A review and synthesis of existing information were used to develop a model for evaluating black-shouldered kite habitat quality. The model is scaled to produce an index between 0 (unsuitable habitat) to 1.0 (optimal habitat). Habitat suitability index models are designed for use with the Habitat Evaluation Procedures previously developed...
Middle Eocene dicotyledonous plants from Republic, northeastern Washington
Jack A. Wolfe, Wesley Wehr
1987, Bulletin 1597
Geohydrology and susceptibility of major aquifers to surface contamination in Alabama; area 6
S.S. DeJarnette, J.E. Crownover
1987, Water-Resources Investigations Report 87-4113
This report delineates and describes the geohyrology and susceptibility of the major aquifers to contamination in Area 6, Greene, Marengo, Pickens, Sumter, and Tuscaloosa Counties in west-central Alabama. The major aquifers in the study area are the Nanafalia, Eutaw, Gordo, and Coker aquifers of Tertiary and Cretaceous age. The recharge...
The Conterminous United States Mineral Assessment Program: Background information to accompany folio of geologic and mineral resource maps of the Silver City 1° x 2° quadrangle, New Mexico and Arizona
Donald H. Richter, B. B. Houser, K. C. Watts, D. P. Klein, W. N. Sharp, Harald Drewes, D. C. Hedlund, G. L. Raines, J.R. Hassemer
1987, Circular 975
The Silver City 1° x 2° quadrangle, consisting of about 20,650 km2 in southwestern New Mexico and southeastern Arizona, has been investigated by a multidisciplinary research team for the purpose of assessing its mineral resource potential. The results of this investigation are in a folio of 21 maps that contain...
The Alaska Mineral Resource Assessment Program: Background information to accompany folio of geologic and mineral resource maps of the Circle quadrangle, Alaska
Helen Laura Foster, W. D. Menzie, J. W. Cady, S. L. Simpson, J. N. Aleinikoff, Frederic H. Wilson, R. B. Tripp
1987, Circular 986
The geology, geochemistry, geophysics, and Landsat imagery of the Circle quadrangle were investigated by an interdisciplinary research team for the purpose of assessing the mineral potential of the area. The quadrangle covers approximately 15,765 km2 in east-central Alaska; most of it is included in the mountainous Yukon-Tanana Upland physiographic division,...
Water levels, chloride concentrations, and pumpage in the coastal aquifers of Delaware and Maryland
D. J. Phelan
1987, Water-Resources Investigations Report 87-4229
The Manokin, Ocean City, Pocomoke, and unconfined aquifers of coastal Delaware and Maryland are susceptible to saltwater intrusion from inland movement of offshore water, and from vertical leakage from the bays and deeper aquifer. Comparison of data for water levels, chloride, and pumpage affected during 1974-86 shows that, with the...
Hydrogeology in the area of a freshwater lens in the Floridan aquifer system, northeast Seminole County, Florida
G. G. Phelps, K.P. Rohrer
1987, Water-Resources Investigations Report 86-4078
Northeast Seminole County, Florida, contains an isolated recharge area of the Floridan aquifer system that forms a freshwater lens completely surrounded by saline water. The freshwater lens covers an area of about 22 sq mi surrounding the town of Geneva, and generally is enclosed by the 25 ft land surface...
Selected ground-water data in the upper Mongaup River basin, Sullivan County, New York
Stephen W. Wolcott
1987, Open-File Report 87-114
A set of four adjoining 7.5-minute quadrangle sheets that together depict the upper Mongaup River Basin in Sullivan County , N.Y., at 1:24,000 scale show the location, well yield, depth, water use, ownership, and date of ownership of wells, test holes , and springs. Most wells that tap stratified-drift deposits...
Geochemical map of the Pond Mountain and Pond Mountain Addition Roadless Areas, Carter County, Tennessee
K.A. Duttweiler, W. R. Griffitts, E.F. Cooley, J. W. Whitlow
1987, Miscellaneous Field Studies Map 1648-B
In the spring of 1980, K. A. Duttweiler, J. W. Whitlow, and W. R. Griffitts of the U.S. Geological Survey conducted a reconnaissance geochemical survey of the Pond Mountain and Pond Mountain Addition Roadless Areas. The purpose of the study was to determine the geochemical nature of the study area...
Proceedings of a workshop on Development of mineral, energy, and water resources and mitigation of geologic hazards in Central America
Simon M. Cargill, Gary L. Raines
Richard D. Krushensky, editor(s)
1987, Circular 1006
A Workshop on Desert Processes, September 24-28, 1984; report on the conference
John F. McCauley, Jack N. Rinker
1987, Circular 989
Newly located occurrences of lode gold near Table Mountain, Circle Quadrangle, Alaska
W. D. Menzie, Renmin Hua, Helen Laura Foster
1987, Bulletin 1682
Aeromagnetic maps of the west-central Sierra Nevada, California
D. A. Ponce, V.E. Langenheim
1987, Geophysical Investigations Map 983
No abstract available....
Calibration of a dissolved-solids model for the Yampa River basin between Steamboat Springs and Maybell, northwestern Colorado
R. S. Parker, D. W. Litke
1987, Water-Resources Investigations Report 86-4190
The cumulative effects of changes in dissolved solids from a number of coal mines are needed to evaluate effects on downstream water use. A model for determining cumulative effects of streamflow, dissolved-solids concentration, and dissolved-solids load was calibrated for the Yampa River and its tributaries in northwestern Colorado. The model...
New information resources of the U.S. Geological Survey Library System, September 1987
Water Resources Division, U.S. Geological Survey
1987, Open-File Report 87-400-I
Application of the precipitation-runoff model in the Warrior coal field, Alabama
Robert E. Kidd, C. R. Bossong
1987, Water Supply Paper 2306
A deterministic precipitation-runoff model, the Precipitation-Runoff Modeling System, was applied in two small basins located in the Warrior coal field, Alabama. Each basin has distinct geologic, hydrologic, and land-use characteristics. Bear Creek basin (15.03 square miles) is undisturbed, is underlain almost entirely by consolidated coal-bearing rocks of Pennsylvanian age (Pottsville...
Mineral resources of the Honeycomb Buttes Wilderness Study Area, Fremont and Sweetwater counties, Wyoming
C. G. Patterson, Dolores M. Kulik, Jeffrey S. Loen, M.E. Koesterer, D.C. Scott
1987, Bulletin 1757-B
Exploration intensity map of the Cretaceous J Sandstone, Denver Basin, Colorado, Nebraska, and Wyoming
Debra K. Higley, D. L. Gautier, Richard F. Mast
1987, Open-File Report 87-2
Bedrock and engineering geologic maps of Bronx County and parts of New York and Queens counties, New York
Charles A. Baskerville
1987, Open-File Report 87-360
Measuring and computing natural ground-water recharge at sites in south-central Kansas
M.A. Sophocleous, C. A. Perry
1987, Water-Resources Investigations Report 87-4097
To measure the natural groundwater recharge process, two sites in south-central Kansas were instrumented with sensors and data microloggers. The atmospheric-boundary layer and the unsaturated and saturated soil zones were monitored as a single regime. Direct observations also were used to evaluate the measurements. Atmospheric sensors included an anemometer, a...
