Estimating ground-water influx to a portion of the Rio Grande de Manati River basin in Puerto Rico through the measurement of 222Rn
K. Kelly Ellins, Angel Roman-Mas, Roger W. Lee
Ferdinand Quinones, A.V. Sanchez, H. Smith, editor(s)
1986, Conference Paper, Proceedings of the Third Caribbean Islands Water-Resources Congress
Water has become a critical commodity in the Caribbean Region. In spite of a relative abundance of rainfall even on the smaller islands, the region is faced with severe seasonal shortages as well as increasing water quality problems. The supply of thewater needs in the area will become even more critical...
Recent developments in hydrologic instrumentation
Vito J. Latkovich, James C. Futrell II
Douglas L. Kane, editor(s)
1986, American Water Resources Association Technical Publication Series 86-1
The programs of the U.S. Geological Survey require instrumentation for collecting and monitoring hydrologic data in cold regions. The availability of space-age materials and implementation of modern electronics and mechanics is making possible the recent developments of hydrologic instrumentation, especially in the area of measuring streamflow under ice cover. Material...
Discussion of "Aquifer test analysis in fractured rocks with linear flow pattern"
Paul A. Heish
1986, Groundwater (24) 530-530
No abstract available...
Determination of the components of stormflow using water chemistry and environmental isotopes, Mattole River basin, California
V. C. Kennedy, Cynthia R. Adams, Gary W. Zellweger, Theodore A. Wyerman, R.J. Avanzino
1986, Journal of Hydrology (84) 107-140
The chemical and isotopic composition of rainfall and stream water was monitored during a storm in the Mattole River basin of northwestern California. About 250 mm of rain fell during 6 days (∼80% within a 42 h period) in late January, 1972, following 24 days of little or no precipitation....
Groundwater transport of strontium 90 in a glacial outwash environment
Kenneth L. Kipp Jr., Kenneth G. Stollenwerk, David B. Grove
1986, Water Resources Research (22) 519-530
As part of the investigation of groundwater contamination at a uranium-scrap recovery plant at Wood River Junction, Rhode Island, laboratory experiments led to the development of a model for predicting the transport of strontium 90 in glacial outwash sediments based on an approximate mechanism for ion exchange. The multicomponent system...
Modeling contamination of shallow unconfined aquifers through infiltration beds
D.W. Ostendorf
1986, Water Resources Research (22) 375-382
We model the transport of a simply reactive contaminant through an infiltration bed and underlying shallow, one-dimensional, unconfined aquifer with a plane, steeply sloping bottom in the assumed absence of dispersion and downgradient dilution. The effluent discharge and ambient groundwater flow under the infiltration beds are presumed to form a...
Predictive accuracy of a ground-water model--Lessons from a postaudit
Leonard F. Konikow
1986, Groundwater (24) 173-184
Hydrogeologic studies commonly include the development, calibration, and application of a deterministic simulation model. To help assess the value of using such models to make predictions, a postaudit was conducted on a previously studied area in the Salt River and lower Santa Cruz River basins in central Arizona. A deterministic,...
Controlled and renewable release of phosphorous in soils from mixtures of phosphate rock and NH4-exchanged clinoptilolite
T.-M. Lai, D. D. Eberl
1986, Zeolites (6) 129-132
A controlled and renewable release fertilization system is proposed that employs NH4 saturated clinoptilolite to aid in the dissolution of phosphate rock (apatite), and thereby to release soluble N, P, and exchangeable Ca for uptake by plants. The system is based on the principle that exchangers can sequester Ca ions...
Discussion of "Aquifer test analysis in fractured rocks with linear flow pattern" by Z. Sen
Paul A. Heish
1986, Groundwater (24) 530-530
No abstract available. ...
Wetland ecosystems studies from a hydrologic perspective
James W. LaBaugh
1986, Journal of the American Water Resources Association (22) 1-10
Selected studies from the literature were reviewed to determine the extent of knowledge about the relationship between hydrology and wetland ecosystem studies. Wetland studies of chemical input-output relationships have been the most dependent on hydrologic data of all wetland investigations; yet, very few of these studies have attempted to measure...
Application of continuous seismic reflection methods to hydrologic studies
F.P. Haeni
1986, Groundwater (24) 23-31
Oil and gas exploration and engineering studies in water‐covered areas routinely use continuous seismic profiling techniques to obtain subsurface geologic information. Such profiling also can be used effectively in hydrologic studies to define the geologic framework of aquifer systems, to locate hydrologic boundaries, and in some places, to interpret the...
Physio-chemical processes affecting copper, tin and zinc toxicity to algae: A review
James S. Kuwabara
1986, Book chapter, Studies in environmental science
This chapter focuses on the physic-chemical processes affecting copper, zinc, and tin toxicity to algae. Both Cu and Zn are essential algal micronutrients, cofactors in numerous biochemical processes. The availability of a nutrient or toxic substance can be significantly affected by precipitation. Methods for modeling the effects of adsorption–desorption reactions...
Parameters affecting the partition coefficients of organic compounds in solvent-water and lipid-water systems
C. T. Chiou, J.H. Block
W. Dunn, R. Pearlman, J.H. Block, editor(s)
1986, Book chapter, Partition and coefficients: Determination and estimation
No abstract available....
Effects of flood control alternatives on the hydrology, vegetation, and wildlife resources of the Malheur-Harney lakes basin
D. B. Hamilton, Gregor T. Auble, R.A. Ellison, J. E. Roelle
1986, Report
No abstract available....
Determining instream flows for flushing of fines and channel maintenance: a review
Robert T. Milhous
1986, Book, Proceedings of the Sixth Annual AGU Front Range Branch Hydrology Days
No abstract available....
An evaluation of land use, hydrology, and sediment yield in the Mill Creek watershed
Mary Ann Madej, C. O’Sullivan, N. Varnum
1986, Technical Report 17
No abstract available at this time...
Effects of urbanization on streamflow, sediment loads, and channel morphology in Pheasant Branch basin near Middleton, Wisconsin
W.R. Krug, G. L. Goddard
1986, Water-Resources Investigations Report 85-4068
A 5-year, data-collection and modeling study was conducted on Pheasant Branch basin in and near Middleton, Wisconsin. The objectives of the study were to: (1) describe the streamflow characteristics, sediment transport, and stream-channel morphology in the Pheasant Branch basin; and (2) relate the above factors to changes caused by urbanization...
URBAN STORMWATER-QUALITY INVESTIGATIONS BY THE USGS.
Marshall E. Jennings, Timothy L. Miller
Urbonas BenRoesner Larry A., editor(s)
1986, Conference Paper
U. S. Geological Survey (USGS) urban stormwater investigations, in cooperation with local and Federal agencies, have produced significant national data bases of information and enhanced understanding of urban hydrologic processes. Studies in progress include statistical regionalization of urban stormwater quality, the effects of stormwater detention on water quality, ways of...
Measurement of nitrous oxide reductase activity in aquatic sediments
L.G. Miller, Ronald S. Oremland, S. Paulsen
1986, Applied and Environmental Microbiology (51) 18-24
Denitrification in aquatic sediments was measured by an N2O reductase assay. Sediments consumed small added quantities of N2O over short periods (a few hours). In experiments with sediment slurries, N2O reductase activity was inhibited by O2, C2H2, heat treatment, and by high levels of nitrate (1 mM) or sulfide (10...
Movement and fate of creosote waste in ground water, Pensacola, Florida; U.S. Geological Survey toxic waste-ground-water contamination program
Bernard J. Franks
H.C. Mattraw Jr., editor(s)
1986, Water Supply Paper 2285
Ground- and surface-water contamination by pesticides used in the wood-preserving industry is widespread in the United States. Pine poles were treated with wood preservatives from 1902 to 1981 at a creosote works near Pensacola, Florida. Diesel fuel, creosote, and pentachlorophenol were discharged to two unlined impoundments that had a direct...
Louisiana hydrologic atlas map no. 1: Mean annual runoff in Louisiana
Harry C. McWreath III, Alfred S. Lowe
1986, Water-Resources Investigations Report 86-4149
The map shows the mean annual runoff from drainage basins in Louisiana exclusive of those in the coastal zone and the alluvial valleys of the Mississippi, Ouachita, and Red Rivers. The mean annual runoff for the State of Louisiana varies from 0.7 (cu ft/s)/sq mi in the Sabine and Red...
Description and generalized distribution of aquifer materials in the alluvial basins of Arizona and adjacent parts of California and New Mexico
Geoffrey W. Freethey
1986, Hydrologic Atlas 663
No abstract available....
Hydrogeologic framework of the Floridan aquifer system in Florida and in parts of Georgia, Alabama, and South Carolina
James A. Miller
1986, Professional Paper 1403-B
The Floridan aquifer system of the Southeastern United States is comprised of a thick sequence of carbonate rocks that are mostly of Paleocene to early Miocene age and that are hydraulically connected in varying degrees. The aquifer system consists of a single vertically continuous permeable unit updip and of two...
Louisiana hydrologic atlas map no. 2: Areal extent of freshwater in major aquifers of Louisiana
Charles W. Smoot
1986, Water-Resources Investigations Report 86-4150
The areal availability of freshwater (cl content < 250 mg/L) in 14 major aquifers in Louisiana was investigated. The depth of occurrence of fresh groundwater in Louisiana is variable. The aquifers were mapped to show their areal extent from the outcrop or subcrop to the downdip limit of freshwater. Water...
Transport of chloride ion in a water-unsaturated soil exhibiting anion exclusion
Ronald V. James, Jacob Rubin
1986, Soil Science Society of America Journal (50) 1142-1149
Miscible displacement techniques were used to create Cl- concentration profiles in unsaturated laboratory columns of Delhi sand (Typic Xeropsamments), each having a nearly uniform water content. The three steady flow rates used resulted in three different, average water contents. Chloride concentrations near the top of the column were smaller and...
