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Ground Water. 2009 Nov-Dec;47(6):797-805. doi: 10.1111/j.1745-6584.2009.00589.x. Epub 2009 Jun 29.

Analytical design curves to maximize pumping or minimize injection in coastal aquifers.

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Department of Civil Engineering, Dong-A University, Saha-gu Hadan 2-dong 840, Busan, 604-714, Korea.


Explicit algebraic equations are derived to determine approximate maximum pumping rates or minimum injection rates to limit sea water intrusion to a prespecified distance from the coastline. The equations are based on Strack's (1976) single-potential solution. The maximum pumping rates and minimum injection rates applied at wells with uniform spacing to control the inland movement of the fresh water-salt water interface in a coastal aquifer could be calculated from Strack's (1976) solution without the need of a numerical optimization algorithm. When wells are distributed in a simple fashion, the maximum intrusion location can be identified precisely for pumping cases and approximately for injection cases. For pumping cases, critical points are the limit of allowable salt water intrusion, whereas no such limit exists for injection cases. Once an application site is identified, a series of design curves for pumping and injection rates can be developed for arbitrary intrusion limits. When a user is interested only in the largest pumping rates associated with critical points, one design curve can yield complete information.

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