{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "These line features produced by the USGS represent an approximate inland extent of the saltwater interface along South Florida's East Coast over time. The approximate saltwater interface lines in Miami-Dade County are represented by the 1,000-mg/L isochlor at the base of the Biscayne Aquifer.", "description": "

These line features produced by the USGS represent an approximate inland extent of the saltwater interface along South Florida's East Coast over time. The approximate saltwater interface lines in Miami-Dade County are represented by the 1,000-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. In a separate effort, the SFWMD develops maps documenting the inland extent of the saltwater interface as defined by the 250 milligrams per liter (mg/L) chloride concentration in groundwater. This effort is done every 5 years for the East Coast and West Coast Aquifers excluding the Biscayne Aquifer in Miami-Dade. Those datasets are found in separeate feature classes for each year to date: Merged Isochlor 2009, Merged Isochlor 2014, and Merged Isochlor 2019. <\/SPAN><\/P>

Chloride and well data from the USGS are available via <\/SPAN>https://waterdata.usgs.gov/nwis.<\/SPAN><\/A><\/P><\/DIV><\/DIV><\/DIV>", "summary": "These line features produced by the USGS represent an approximate inland extent of the saltwater interface along South Florida's East Coast over time. The approximate saltwater interface lines in Miami-Dade County are represented by the 1,000-mg/L isochlor at the base of the Biscayne Aquifer.", "title": "Approximate Saltwater Interface (USGS)", "tags": [ "salt water", "saltwater", "saline", "salinity", "isochlor", "chloride", "encroachment", "intrusion", "interface", "aquifer", "geology", "hydrogeology", "Biscayne", "Biscayne Aquifer", "water table", "surficial", "Southeast Florida", "East Coast", "Miami-Dade", "Martin", "St Lucie", "Palm Beach", "Broward", "geoscientific Information", "SFWMD", "South Florida Water Management District" ], "type": "", "typeKeywords": [], "thumbnail": "", "url": "", "minScale": 150000000, "maxScale": 5000, "spatialReference": "", "accessInformation": "U.S. Geological Survey (USGS), Miami-Dade County\n\nSFWMD, Water Supply Planning and Implementation: Water Supply Planning and Implementation coordinates with Geospatial Services to manage and maintain geospatial products and data related to their business function.", "licenseInfo": "