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Notes on sedimentation activities calendar year 1984
U.S. Interagency Advisory Committee on Water Data- Subcommittee on Sedimentation
1985, Report
This report is a digest of information furnished by Federal agencies conducting sedimentation investigations. The decision to publish the report was made in 1946, from a proposal by the Chairman of the Federal Interagency River Basin Committee, Subcommittee on Ground Water. The Subcommittee approved the proposal and agreed to issue...
Hydrogeology of a zone of secondary permeability in the surficial aquifer of eastern Palm Beach County, Florida
L. J. Swayze, W. L. Miller
1984, Water-Resources Investigations Report 83-4249
The surficial aquifer is the primary source of freshwater for the heavily developed coastal area in eastern Palm Beach County, Florida. Well fields are generally located in a discontinuous zone of higher secondary permeability, the northernmost extension of the Biscayne aquifer in the surficial aquifer, that extends from the Juno...
Freshwater runoff and salinity distribution in the Loxahatchee River estuary, southeastern Florida, 1980-82
G.M. Russell, B. F. McPherson
1984, Water-Resources Investigations Report 83-4244
Freshwater mixed with seawater over a distance of 5 to 10 river miles in the Loxahatchee River estuary during a recent study. Large freshwater inflows vertically stratified the estuary and shifted the mixing zone seaward. In the northwest fork of the estuary, the saltwater-freshwater interface moved daily about 0.5 to...
Quality of water recovered from a municipal effluent injection well in the Floridan aquifer system, Pompano Beach, Florida
D.J. McKenzie, G. A. Irwin
1984, Water-Resources Investigations Report 84-4100
Approximately 69 million gallons of backflow from an injection well used for the disposal of secondary treated municipal effluent in the Floridan aquifer system near Pompano Beach, Florida, was periodically sampled for inorganic quality from March 1975 through March 1977. Analyses of the backflow effluent showed a concomitant increase in...
Nutrient input from the Loxahatchee River Environmental Control District sewage-treatment plant to the Loxahatchee River Estuary, southeastern Florida
W. H. Sonntag, B. F. McPherson
1984, Water-Resources Investigations Report 84-4020
Two test discharges of treated-sewage effluent were made to the Loxahatchee River in February and September 1981 from the ENCON sewage-treatment plant to document nutrient loading and downstream transport of the effluent to the estuary under maximum daily discharge allowable by law (4 million gallons per day). Concentrations of total...
Attenuation of stormwater contaminants from highway runoff within unsaturated limestone, Dade County, Florida
Bradley G. Waller, Howard Klein, Lawrence J. Lefkoff
1984, Water-Resources Investigations Report 84-4083
Infiltration of stormwater in heavily urbanized parts of Dade County, Florida, is a prime source of recharge to the unconfined Biscayne aquifer, the sole source of drinking water for southeast Florida. Ponded stormwater at the test site contained greater concentrations of lead, zinc, manganese, nitrogen (except nitrate), and phosphorus than...
Developing a state water plan: Ground-water conditions in Utah, spring of 1984
Charles Avery, L. R. Herbert, Donald A. Bischoff, David W. Clark, Ralph L. Seiler, Kevin Guttormson, Melanie S. Elizondo, V.L. Jensen, Michael Enright, D. C. Emett, Carole B. Burden, M.R. Eckenwiler, G. W. Sandberg
1984, Cooperative Investigations Report 24
This is the twenty-first in a series of annual reports that describe ground-water conditions in Utah. Reports in this series, published cooperatively by the U.S. Geological Survey and the Utah Division of Water Resources, provide data to enable interested parties to keep abreast of changing ground-water conditions.This report, like the...
Flooding: A unique year
A.L. Putnam
1984, Report, United States Geological Survey Yearbook, Fiscal Year 1983
Floods have been and continue to be one of the most destructive hazards facing the people of the United States. Of all the natural hazards, floods are the most widespread and the most ruinous to life and property. Today, floods are a greater menace to our welfare than ever before...
Chemical determination of particulate nitrogen in San Francisco Bay. Nitrogen: chlorophyll a rations in plankton
S.W. Hager, D.D. Harmon, A.E. Alpine
1984, Estuarine, Coastal and Shelf Science (19) 193-204
Particulate nitrogen (PN) and chlorophyll a (Chla) were measured in the northern reach of San Francisco Bay throughout 1980. The PN values were calculated as the differences between unfiltered and filtered (0·4 μm) samples analyzed using the UV-catalyzed peroxide digestion method. The Chla values were measured spectrophotometrically, with corrections made for phaeopigments. The...
Effects of freshwater exposure to arsenic trioxide on the parr-smolt transformation of coho salmon (Oncorhynchus kisutch)
J.W. Nichols, Gary Wedemeyer, F.L. Mayer, Walton W. Dickhoff, S.V. Gregory, W. T. Yasutake, S.D. Smith
1984, Environmental Toxicology and Chemistry (3) 143-149
The effects of chronic (6 months) exposure to arsenic trioxide in fresh water on the Parr-smolt transformation of coho salmon (Oncorhynchus kisutch) were evaluated. Exposure to 300 μg As/L (as As2O3) appeared to delay the onset of the normal increase in plasma thyroxine concentration and cause a transient reduction of...
Evaluation of the ground-water resources of coastal Georgia: preliminary report of the data available as of July 1983
Richard E. Krause
1984, Georgia Geologic Survey Information Circular 62
A compilation of ground-water data that have been collected for nearly 100 years in the coastal area of Georgia is presented in this report. The compilation of pertinent data indicates what information is available for use in the evaluation of the ground-water resources of the 13 counties of coastal Georgia....
Ground-water reconnaissance of the central Weber River area, Morgan and Summit Counties, Utah
Joseph S. Gates, Judy I. Steiger, Ronald T. Green
1984, Technical Publication 77
During July 1978 to June 1980, the U.S. Geological Survey conducted a reconnaissance of ground-water conditions and ground- and surface-water relationships in the central Weber River area. This reconnaissance was done in cooperation with the Utah Department of Natural Resources, Division of Water Rights.The study area is a series of...
Program activities of the U.S. Geological Survey
Water Resources Division, U.S. Geological Survey
1984, Report
The mission of the Geological Survey is to collect, organize, interpret, and publish information about the nation's energy, minerals, water, and land resources; and to determine the geologic structure of the United States and develop an understanding of earth processes and hydrologic principles....
Specific-lon electrode determinations of sulfide preconcentrated from San Francisco Bay waters
D.V. Vivit, J.W. Ball, E. A. Jenne
1984, Environmental Geology and Water Sciences (6) 79-90
Measurements of low-level dissolved-sulfide concentrations in estuarine water from San Francisco Bay have been made using the sulfide-specific electrode after preservation, separation, and preconcentration of the sulfide species. The separation and preconcentration were acheived by coprecipitation of ZnS with Zn(OH)2 followed by collection and dissolution of the precipitate, giving concentration...
Fouling community of the Loxahatchee River estuary, Florida, 1980-81
B. F. McPherson, W. H. Sonntag, M. Sabanskas
1984, Estuaries (7) 149-157
Monthly growth of the fouling community at eight test panel sites in the Loxahatchee River Estuary was related to salinity and temperature. Growth was lowest in January 1981 (averaging 23 g per m2, dry weight), and increased during spring and early summer with increasing water temperature. Maximum growth occurred during...
Sedimentary, tectonic, and sea-level controls on submarine fan and slope-apron turbidite systems
D.A.V. Stow, D. G. Howell, C.H. Nelson
1984, Geo-Marine Letters (3) 57-64
To help understand factors that influence submarine fan deposition, we outline some of the principal sedimentary, tectonic, and sea-level controls involved in deep-water sedimentation, give some data on the rates at which they operate, and evaluate their probable effects. Three depositional end-member systems, two submarine fan types (elongate and radial),...
Defining geologic Hazards for natural resources management using tree-ring analysis
J.V. DeGraff, S.S. Agard
1984, Environmental Geology and Water Sciences (6) 147-155
Landslides, avalanches, floods, and other geologic hazards impair natural resources management by jeopardizing public safety, damaging or restricting resource utilization, and necessitating expenditures for corrective measures The negative impact of geologic hazard events can be reduced by tailoring resources management to hazard potential of an area This requires assessment of...
Field and laboratory evaluation of the influence of copper-diquat on apple snails in southern Florida
P. V. Winger, M.J. Imlay, W.E. McMillan, T.W. Martin, Jean E. Takekawa, W.W. Johnson
1984, Environmental Toxicology and Chemistry (3) 409-424
The recent decline of apple snail (Pomacea paludosa) populations in canals surrounding Loxahatchee National Wildlife Refuge in southern Florida coincided with the use of copper-diquat for the control of the aquatic weed hydrilla (Hydrilla verticillata). Field and laboratory studies were designed to assess the effects of copper-diquat on apple snails,...