ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1971.tb03560.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY

摘要:

AbstractThe Bureau of Reclamation's authorized Lower Teton Division multipurpose project is based on conjunctive use for irrigation of surface water from the Snake River and ground water from the Snake Plain basalt aquifer of southeastern Idaho. Ground water will be provided to replace surface water adversely diverted to Division lands during dry years. Extensive investigations, including the construction and testing of five test wells of 12‐ to 18‐cubic‐foot per‐second (cfs) capacity, indicate that use of such large wells is feasible, and that the basalt aquifer will yield the initial 400‐cfs maximum flow without appreciable detrimental effect. Location of well fields and design and construction practices were primarily controlled by field conditions; use of theoretical parameters was essentially

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1971.tb03561.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY

摘要:

ABSTRACTThe application of borehole geophysics to study of basalt hydrogeology has been pursued at Washington State University for the past six years. Throughout this period much effort has been directed to redesign of commercial geophysical system components and development of expanded downhole capabilities. It has been demonstrated that composite logging techniques can be used to define the hydraulic regime of a well constructed in basalt. Certain of the logging measures, with further study, may become powerful tools for identifying anomalous conditions associated with pollutant dispersion in an aquifer. Positive correlations of basalt with the logging methods have not yet been made over distances greater than 20 miles. However, as improved logging density permits intermediate points of correlation to be established, further extensions are anticipated. Both major and minor log features of the basalts display varying degrees of lateral persistence. Because driller's logs are generally inadequate in describing subtleties of basalt geology, subsurface correlations are best made with geophysical logs. In areas with extensive surficial cover, the geophysical methods may prove to be a very practical method of determining basalt stratigraphy. Geophysical well logging offers to agencies charged with ground‐water management many opportunities for gaining new knowledge which have been largely neglecte

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1971.tb03562.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1971.tb03563.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY

摘要:

AbstractWater‐level declines in the principal artesian aquifer have created a head imbalance between the aquifer and an underlying brackish‐water zone containing up to 4,550 mg/1 chloride. The brackish‐water zone leaks brackish water into the aquifer through several breaks in a confining unit.A relief well tapping the brackish‐water zone was drilled near a suspected break and pumped at about 3,000 gpm to lower the potential in the zone and bring it into hydrostatic equilibrium with the aquifer. The pumping apparently succeeded in decreasing the rate of brackish‐water leakage into the aquifer. Successive samples of water from a well tapping the aquifer and downgradient from the relief well showed a decrease in the chloride content. Several more relief wells may be necessary to ultimately control chloride contamination of th

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1971.tb03564.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY

摘要:

ABSTRACTThe resistance‐capacitance electrical analogue is used to analyse the time variant behaviour of aquifers which change between the confined and unconfined states. This is achieved using a field effect transistor as a switch which automatically operates as the water table crosses the top of the aquifer.The significance of this change for a particular limestone aquifer is described. In addition a thorough examination is made of the changes to the pumping test time‐drawdown curves when an aquifer, which is initially confined, becomes unconfined. If standard methods are used for this problem, erroneous results will be obtained for the transmissibility and the storage coefficie

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1971.tb03565.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1971.tb03566.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY

摘要:

ABSTRACTThis study provides cost information for private home ground‐water supply systems in Illinois. Relatively accurate cost predictions for different types and depths of wells, ranging in cost from about $150 to $2400, can be made from the graphs presented. The average cost of all wells studied is about $575. Cost data for pumping systems equipped with 10‐gpm submersible pumps (approximately 50 percent of all collected data) show that the average cost of these systems is about $585 with 50 percent ranging between $400 and $680.The costs of treating water for domestic use also are summarized. Two graphs illustrate the monthly costs of softening and removing iron at varying monthly consumption rates and concentrations of hardness‐forming minerals and iron. The monthly cost of continuous chlorination is calculated.Use of the data presented makes it possible to estimate the monthly costs of raw and treated water from a domestic ground‐water supply. Two maps show the probable costs of domestic raw water‐supply systems from sand and gravel wells and bedrock wells throughout the State. For an average installation and domestic use rate in Illinois, the monthly cost of raw water is about $11.00, softened water $15.40, softened water treated for iron $22.00, and softened water treated for iron and chlorinated $25.00. Similar calculations for any type and depth of well, water quality, and treatment can be made from the information in this report. This material should provide adequate information for planning purposes and decision making in developing a desired domest

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1971.tb03567.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1971.tb03568.x

出版商:Blackwell Publishing Ltd    

年代:1971

数据来源: WILEY