ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1975.tb03606.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

ABSTRACTWater zoning is not new in arid areas. Many States have laws limiting pumping. However, most of the existing ordinances do not achieve their stated purpose. Many enforce conservation of scarce resources for benefit of future users. Some purport to ensure a continuous water supply to the rights holders. Existing ordinances that limit pumping to the so‐called safe yield do not take costs or recoverable benefits into consideration, and the period of use is not stipulated. Therefore, where pumping is regulated under such ordinances, the basins cannot be managed to obtain maximum benefits to present users of the available supply. Two types of ordinances are discussed: general‐purpose and management‐plan ordinances, which are designed to make possible the achievement of specific objectives. Examples are given of how the latter can be designed to: limit stream depletion and protect existing rights; disperse pumping to increase economic return; force conjunctive use of all land, mineral, and water resources; and establish production quotas to insure optimum economic return to all users during a predetermined p

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1975.tb03607.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

ABSTRACTThe potential for artificial ground‐water recharge through shallow shafts is being conducted at the Leaky Acres Recharge Project in Fresno, California. The research is directed toward developing methods for constructing and placing filter‐pack materials and procedures for periodically cleaning filter materials to regenerate initial intake rates. This report presents preliminary results of two differently constructed shallow shafts.Over a period of 94 days, 50.8 X 103cu m (13.4 million gals) of screened canal water was recharged. Redevelopment with a submersible pump regenerated one shaft to 109 percent of its original intake rate. Piezometric observations indicated that most of the clogging occurred within the filter‐pack mat

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1975.tb03608.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

ABSTRACTThe bacterial flora of three unpolluted saline aquifers were examined. Aerobic, anaerobic, and facultative microorganisms were isolated and classified to genus. The organisms isolated were those commonly found in surface water and soil. Methanogenic bacteria were present in all aquifers.

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1975.tb03609.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

ABSTRACTThe Pliocene Ogallala Formation and the Quaternary Sand Hills Formation cover an extensive area in the north‐central prairie states. The area studied in this investigation includes only that portion between the Little White River, South Dakota, and the Niobrara River, Nebraska, where the saturated thickness is about 100 feet and a five‐day aquifer test showed that the coefficient of permeability is 439 gpd/ft2. The water has a total dissolved solids content of only 90 ppm. An average of 18 inches of precipitation falls on this arid country annually, and the average annual recharge to these permeable deposits is calculated at 2 to 3 inches.Little ground‐water development has occurred in the area to date, but the aquifer has considerable potential. The aquifer is exceptionally permeable, close to the surface and easy to drill, and has exceptionally good recharge and good quality water. Data on recharge rates and theoretical distance‐drawdown curves support the conclusion that irrigation of more than 1 quarter‐section for every 2 sections of land would cause a depletion of th

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1975.tb03610.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

ABSTRACTMany geohydrologists believe that the step‐drawdown test is useful in determining many important characteristics of a well, whereas others altogether question its utility. In addition to this controversy, its application is hindered because the graphical analysis of data is unwieldy. A computer code is presented for step‐drawdown test analysis which is efficient and simple to use; moreover, it is an example of how optimization can be used in a practical way. A listing of the FORTRAN code is included along with some example calculati

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1975.tb03611.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1975.tb03612.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1975.tb03613.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1975.tb03614.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

ISSN:0017-467X    

DOI:10.1111/j.1745-6584.1975.tb03615.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY