Introduction to stream network habitat analysis
John M. Bartholow, Terry J. Waddle
1986, Report
Increasing demands on stream resources by a variety of users have resulted in an increased emphasis on studies that evaluate the cumulative effects of basinwide water management programs. Network habitat analysis refers to the evaluation of an entire river basin (or network) by predicting its habitat response to alternative...
Role of blanket deposits on the hydrology and water chemistry of the limestone water-table aquifer within the north coast of Puerto Rico through interpretation of geochemical data
Angel Roman-Mas
Ferdinand Quinones, A.V. Sanchez, H. Smith, editor(s)
1986, Conference Paper, Proceedings of the Third Caribbean Islands Water-Resources Congress
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. ...
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...
Limitations in the use of commercial humic acids in water and soil research
Ronald L. Malcolm, P. MacCarthy
1986, Environmental Science & Technology (20) 904-911
Seven samples of commercial "humic acids", purchased from five different suppliers, were studied, and their characteristics were compared with humic and fulvic acids isolated from streams, soils, peat, leonardite, and a dopplerite sample. Cross-polarization and magic-angle spinning 13C NMR spectroscopy clearly shows pronounced differences between the commercial materials and all...
Adaptation of Selenastrum capricornutum (Chlorophyceae) to copper
J.S. Kuwabara, H.V. Leland
1986, Environmental Toxicology and Chemistry (5) 197-203
Selenastrum capricornutum Printz, growing in a chemically defined medium, was used as a model for studying adaptation of algae to a toxic metal (copper) ion. Cells exhibited lag‐phase adaptation to 0.8 μM total Cu (10−12 M free ion concentration) after 20 generations of Cu exposure. Selenastrum adapted to the same...
Geochemical investigations of selected Eastern United States watersheds affected by acid deposition
Owen P. Bricker
1986, Journal of the Geological Society (143) 621-626
The effects of acid deposition on surface waters in eastern United States watersheds having similar size, physiography, climate and land use are related to the composition of the underlying bedrock. Watersheds developed on greenstone, calcareous shale, sandstone, granite, and schist differ in their ability to neutralize acid deposition....
Ground-water flow in low permeability environments
Christopher E. Neuzil
1986, Water Resources Research (22) 1163-1195
Certain geologic media are known to have small permeability; subsurface environments composed of these media and lacking well developed secondary permeability have groundwater flow sytems with many distinctive characteristics. Moreover, groundwater flow in these environments appears to influence the evolution of certain hydrologic, geologic, and geochemical systems, may affect the...
CONCEPTUAL DESIGN OF THE SURFACE WATER COMPONENT OF THE NATIONAL WATER QUALITY ASSESSMENT (NAWQA) PROGRAM.
Robert M. Hirsch
1986, Conference Paper, Oceans Conference Record (IEEE)
The US Geological Survey started, in a pilot phase, a program to provide nationally consistent information on the status and trends in the quality of the nation's fresh water. The program also intends to identify and describe the relationships between both the status and trends in water quality as they...
Use of detrended correspondence analysis to evaluate factors controlling spatial distribution of benthic insects
H.V. Leland, James L. Carter, Steven V. Fend
1986, Hydrobiologia (131) 113-123
Detrended correspondence analysis (DCA) was evaluated for its effectiveness in displaying factors controlling the spatial distribution of benthic insects in an oligotrophic stream where an experimental gradient (copper) that selectively affects population abundances was imposed. DCA proved to be highly sensitive to differences among samples and consistently provided ecologically meaningful...
A new model for humic materials and their interactions with hydrophobic organic chemicals in soil-water or sediment-water systems
R.L. Wershaw
1986, Journal of Contaminant Hydrology (1) 29-45
A generalized model of humic materials in soils and sediments, which is consistent with their observed properties, is presented. This model provides a means of understanding the interaction of hydrophobic pollutants with humic materials. In this model, it is proposed that the humic materials in soils and sediments consist of...
Movement and fate of detergents in groundwater: A field study
E.M. Thurman, L.B. Barber Jr., D. LeBlanc
1986, Journal of Contaminant Hydrology (1) 143-161
The major cations, anions, and detergents in a plume of contaminated groundwater at Otis Air Base on Cape Cod (Mass., U.S.A.) have moved approximately 3.5 km down gradient from the disposal beds. We hypothesize that the detergents form two distinct plumes, which consist of alkyl benzene sulfonates (ABS) detergents and...
