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This is a merged set of Isochlor line features into single feature class compiled from the original series of individual 2009 Isochlor data layers. Approximate 250 mg/L isochlor for Broward, Palm Beach, Martin, St. Lucie, Lee and Collier Counties. Well and chloride data were obtained from USGS and SFWMD records. The line marks an approximation of the farthest inland extent of the saltwater interface as defined by the 250 mg/L chloride concentration and/or the farthest inland extent of saline surface water. The isochlor is based on the average of available chloride values for the period of April/May 2009. Chloride and well data from the SFWMD have been furnished by Permittees and have not been validated. Chloride and well data from the USGS are available via <\/SPAN>http://waterdata.usgs.gov/nwis<\/SPAN><\/A>. The original isochlor line was created in 2010.<\/SPAN><\/P>

Version 1.1, March 03, 2015: <\/SPAN><\/P>

The original isochlor was updated in 2014/2015 to incorporate new and corrected data, as well as a better understanding of the saline surface water.<\/SPAN><\/P>

Version 1.2, May 08, 2015: Update at the S13 structure in Broward County based on corrected data. <\/SPAN><\/P>

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