{ "culture": "en-US", "name": "Saltwater_Interface", "guid": "5C5B19BA-C4B9-4854-85C9-1D6B119AF8DC", "catalogPath": "", "snippet": "This web layer displays the estimated locations of saltwater interface for 2009, 2014, 2019, and 2024 as well as USGS data from 1904 to 2022.", "description": "

The 250 mg/L isochlor is mapped for all SFWMD coastal counties (except Miami-Dade which is updated by USGS) and updated every five years. 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 maximum chloride value for the period of March/April/May for each respective year, with minor exceptions. Well and chloride data were obtained from USGS and SFWMD records. The chloride wells used for this project are compiled in a separate web layer called, Chloride Concentration Control Points. These datasets are developed to support of the SFWMD's Climate Change Initiative and were last updated in 2018/2019 in support of the SFWMD's Saltwater Interface Mapping Project. <\/SPAN><\/P>

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The line features in Miami-Dade county are produced by the USGS and represent an approximate inland extent of the saltwater interface along South Florida's East Coast over time. The approximate saltwater interface is defined by the1,000-mg/L isochlor at the base of the Biscayne Aquifer. These datasets were originally obtained from the USGS and then merged into a single feature class to combine the years dating back to 1904. <\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "summary": "This web layer displays the estimated locations of saltwater interface for 2009, 2014, 2019, and 2024 as well as USGS data from 1904 to 2022.", "title": "Saltwater Interface", "tags": [ "saline", "salinity", "isochlor", "chloride", "encroachment", "intrusion", "aquifer", "geology", "hydrogeology", "Biscayne", "water table", "surficial", "Lower Tamiami", "Sandstone", "Mid-Hawthorn" ], "type": "Map Service", "typeKeywords": [ "Data", "Service", "Map Service", "ArcGIS Server" ], "thumbnail": "thumbnail/thumbnail.png", "url": "", "extent": [ [ -82.0636859179892, 25.2517977123373 ], [ -80.039586723489, 27.5731494151222 ] ], "minScale": 0, "maxScale": 1.7976931348623157E308, "spatialReference": "NAD_1983_HARN_StatePlane_Florida_East_FIPS_0901_Feet", "accessInformation": "SFWMD Water Supply Planning and Implementation, SFWMD Geospatial Services, United States Geological Survey (USGS)", "licenseInfo": "

This dataset is made available to the public in response to the Florida Public Records Law, Florida Statutes, Chapter 119. Any information, including but not limited to software and data, received from the South Florida Water Management District (\"DISTRICT\") is provided \"AS IS\" without warranty of any kind, and the District expressly disclaims all express and implied warranties, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. The entire risk as to the results and performance of any information obtained from the District is entirely assumed by the recipient.<\/SPAN><\/P><\/DIV>" }