Seasonal variability of near surface soil water and groundwater tables in Florida : phase II.
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2008-01-01
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Edition:Final report; 09/01/2006-1/31/2008.
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Abstract:The seasonal high groundwater table (SHGWT) is a critical measure for design projects requiring
surface water permits including roadway design and detention or retention pond design. Accurately
measuring and, more importantly, predicting water table elevations is a complex process controlled by
numerous factors including soil composition, rainfall, adjacent surface water levels, tidal influences,
topography, connection between underlying aquifers, and perched water table conditions. The objective
of this research effort is to provide a tool for estimating probable high water table elevations. The
resulting SHGWT estimates can then be incorporated into a risk-based analysis for design and
management decisions. The application presented in this report is based upon expansion of a
methodology presented by the USGS (Frimpter, 1981 and Socolow et al., 1994) which estimates water
table levels at a site of interest based upon historic period of record data from a reference well. The
primary distinction between previous studies and the work presented here is that previously only one
reference well was selected to estimate the high water level at a site of interest. The reference well
database application developed for this project considers all reference wells that are similar to a site of
interest and provides a range of probable high water levels.
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