Browse by Archive
ScholarSpace at University of Hawaii at Manoa
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WRRCTR No. 69 Three-Dimensional Zone Model Log Interpretation
To facilitate the interpretation of geophysical electrical well logging data, the apparent resistivity has been calculated in a model in which the experimental situation is approximated by three coaxial cylindrical zones containing the drilling... 1973-09-01
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WRRCTR No. 70 Evaluation of Methods of Pumping Test Analyses for Application to...
Pumping test data from eight locations including the islands of Oahu, Maui, and Molokai were selected and analyzed. The test data were selected on the basis of completeness, reliability, and aquifer type and boundary conditions involved. Analyses... 1973-07-01
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WRRCTR No. 71 Baseline Quality Data for Kalihi Stream
The purpose of this study was to determine the changes in stream water quality related to variations in land use patterns and to establish some baseline data for assessing the Hawaii State Water Quality Standards for surface waters. Effects on... 1973-06-01
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WRRCTR No. 72 Some Statistical Analyses of Hawaiian Rainfall
Monthly rainfall data of several stations in Kalihi Basin, Manoa Basin, and Kaneohe Area, all on Oahu, and the central sloping area of Molokai were correlated to watershed parameters of the areas. Distance measured from the station to a common... 1973-08-01
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WRRCTR No. 73 Application of Reverse Osmosis Technology to Hawaiian Low Quality Waters
A study of the application of reverse osmosis technology to the treatment of Hawaiian low quality waters was conducted. The purpose of the study was to investigate the technical and economical feasibility of utilizing reverse osmosis technology to... 1973-11-01
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WRRCTR No. 74 A Preliminary Report on Urban Hydrology and Urban Water Resources: Oahu,...
The major tasks under Phase II of the project were to: (1) adapt and evaluate several existing watershed simulation models for their applicability under local conditions, (2) expand the data collection effort in the research watersheds, and (3)... 1973-10-01
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WRRCTR No. 75 Neutron Well Logging in Hawaii
In 1970, the Water Resources Research Center initiated a study of neutron well logging techniques in Hawaii. The primary objective of this study was to apply neutron logging techniques to the problem of obtaining reliable porosity data and... 1974-02-01
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WRRCTR No. 76 A Study of the Effects of Secondary Effluent on Waimano and Waiawa Streams
A field study was made between September 1972 to May 1973 to assess the water quality changes in Waiawa and Waimano Streams, particularly the effect of chlorinated effluent from the Pacific Palisades Sewage Treatment Plant on the receiving stream... 1974-05-01
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WRRCTR No. 77 The Quality of Coastal Waters: Second Annual Progress Report
This report summarizes the results of the second year of investigative and evaluative work of the University of Hawaii's Sea Grant Program project, "Quality of Coastal Waters" The general objectives of this multidisciplinary project are to... 1973-09-01
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WRRCTR No. 78 Some Characteristics of Hawaiian High-Intensity Rainfall
A computer monitored network of rapid response Raymond-Wilson rainfall intensity gauges has been established at the Cloud Physics Observatory (CPO), on the windward coast of the island of Hawaii, to record the passage of both warm and cold... 1974-08-01
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WRRCTR No. 83 Dynamic Programming Optimization: A Water Distribution System Design
A computation technique based on the dynamic programming approach using the interactive Fortran language has been developed. The computerized design procedure can be used to obtain optimal design for single source water or other compressed fluid... 1974-09-01
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WRRCTR No. 84 An economic analysis of the patterns and trends of water consumption...
The objectives of this study are to construct and analyze the patterns and trends of water demand in the service areas of the Honolulu Board of Water Supply, and to identify factors affecting water demand with the intent of deriving useful policy... 1974-12-01
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WRRCTR No. 85 Methodological Approaches in Hawaiian Fog Research
Recent studies have demonstrated the important moisture contribution from fog precipitation in mountain areas on the island of Hawaii. The present study investigates research methodologies useful in the study of Hawaiian upslope fog, including:... 1975-03-01
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WRRCTR No. 94 Water Recycling of Sewage Effluent by Irrigation: A Field Study on Oahu
The specific project objectives were to: (1) evaluate by field lysimeters and pilot plots and augment by laboratory studies the feasibility of utilizing water reclaimed from sewage for irrigation under Hawaiian conditions; (2) assess the probable... 1975-03-01
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WRRCTM No. 38 Some Evidence of Economics of Scale in Hawaiian Sugar Plantations
Of the major sectors in Oahu's economy, sugar growing and milling together use by far the largest quantities of water. The three plantations still operating on Oahu in 1971 accounted for 57 percent of total withdrawals, even though this percentage... 1974-01-01
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WRRCTM No. 39 Water Quality Information Storage and Retrieval System for Hawaii
A computerized information storage and retrieval system has been developed for water quality data collected and maintained by the Department of Health, State of Hawaii, from 1955 through 1971. The system provides for safe, permanent, storage and... 1974-05-01
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WRRCSR No. 1.10:83 Decontamination of Chromium-Contaminated Soil and Water: Pearl...
Phase 2 of this project represents the analytical monitoring of an estimated 64,800 ft3 (1 835 m3) of chromium-contaminated soil, classified as a hazardous waste (>5 mg/ℓ chromium extract concentration as measured by the standard EP toxicity... 1983-01-01
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WRRCSR No. 1.29:82 The Significance of the Bactericidal Effect of Sunlight on Indicator...
Natural streams collect runoff and discharges from many sources which alter the quality of stream water. To determine the hygienic quality of streams, water samples from streams are collected and assayed for two human enteric bacteria, fecal... 1982-01-01
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WRRCSR No. 3.12:84 Rotating Biological Contactor for Brackish Wastewater Effluent...
The rotating biological contactor CRBC) is an attached (fixed) growth, biological treatment unit which consists of closely spaced, rotating shaft-mounted discs that generally have approximately 40% of their surface submerged in wastewater. The RBC... 1984-03-01
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WRRCSR No. 03.02.90 Assessment of the Potential for Groundwater Contamination Due to...
The concern over groundwater contamination in Hawaii has become most pronounced since the early 1980s with the discovery of various pesticide-related contaminants in the basal groundwaters of several of the state's aquifers. Two soil fumigants... 1990-03-01
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WRRCSR No. 5.25:83 Haina Well Water Analysis for Presence of Human Enteric Viruses and...
The primary purpose for the analysis of the Haina Well water by the Water Resources Research Center of the University of Hawaii at Manoa was to determine the presence or absence of human enteric viruses in the well water. Since coliform bacteria... 1983-05-01
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WRRCSR No. 7.0:85 Subsurface Water Quality Organic Chemical Contamination of O'ahu...
This progress report is a study of the unprecedented problem of low-level organic chemical contaminants discovered principally in 1983 in potable groundwater sources on O'ahu. A number of inmediate and serious concerns are (1.) extent of the... 1985-12-01
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WRRCSR No. 7.1:85 Desorption and Leachability of Residual DBCP and EDB from Soils and...
Pesticides applied to pineapple fields in central O'ahu to control nematode populations have been detected in groundwater drawn from the underlying aquifer. These nematicides have persisted in surface soils and deep saprolite despite their... 1985-11-01
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WRRCSR No. 7.2:85 Exploratory Study Using Water Disinfectants to Remove EDB from Clean...
A reliable and practical method is required to reduce the concentrations of hazardous chemicals (EDB, DBCP, TCP) which have been detected in some of the groundwaters used for drinking on O'ahu. This study evaluates the feasibility of using high... 1985-11-01
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WRRCSR No. 7.3:85 Spatial and Temporal Distribution of Contaminated Basal Water in...
In recent years, several pesticide-related contaminants have been detected in the basal waters of southern and central O'ahu aquifers. Dibromochloropropane (DBCP) and ethylene dibromide (EDB), two soil fumigants which were previously used by... 1985-11-01
