Frequency Analysis of Shallow Water Tables for Drainage Applications
by David A. Chin, F.ASCE, (Professor, Dept. of Civil, Architectural, and Environmental Engineering, Univ. of Miami, Coral Gables, FL 33124. E-mail: dchin@miami.edu)
Journal of Water Resources Planning and Management, Vol. 137, No. 6, November/December 2011, pp. 491-497, (doi: http://dx.doi.org/10.1061/(ASCE)WR.1943-5452.0000137)
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| Document type: |
Journal Paper |
| Abstract: |
In coastal areas with shallow aquifers, the minimum elevation of newly developed land is typically required to exceed the water-table elevation corresponding to a given return period. Determination of this regulatory water-table elevation usually requires a nonstationary frequency analysis of measured water-table elevations. In this paper, a simple and effective power-transform frequency-analysis procedure for extracting the requisite regulatory water-table elevation is presented and demonstrated. This procedure identifies the critical period yielding the maximum water-table elevation for a given return period, which is a robust regulatory elevation that might not need frequent updates. The assumptions underlying the proposed power-transform frequency-analysis procedure are shown to be valid at 23 of the 24 wells investigated in this study. |
| Author Keywords: | 
| Flood protection |
| Frequency analysis |
| Statistics |
| Water table |
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