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Service Description: <DIV STYLE="text-align:Left;font-size:12pt"><DIV><DIV><P><SPAN>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><P><SPAN /></P><P><SPAN>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>
Map Name: Saltwater_Interface
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Description: <DIV STYLE="text-align:Left;font-size:12pt"><DIV><DIV><P><SPAN>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><P><SPAN /></P><P><SPAN>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>
Service Item Id: 128fce320d0549948ac891924b7dc1fb
Copyright Text: SFWMD Water Supply Planning and Implementation, SFWMD Geospatial Services, United States Geological Survey (USGS)
Spatial Reference:
2881
(2881)
LatestVCSWkid(0)
Single Fused Map Cache: false
Initial Extent:
XMin: -246371.86298753764
YMin: 114582.91423343809
XMax: 1551672.6471640083
YMax: 1316999.8129521636
Spatial Reference: 2881
(2881)
LatestVCSWkid(0)
Full Extent:
XMin: 311558.8201285787
YMin: 334848.93333330005
XMax: 967312.7159672529
YMax: 1177523.5147428364
Spatial Reference: 2881
(2881)
LatestVCSWkid(0)
Units: esriFeet
Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP
Document Info:
Title: Estimated Position of the Saltwater Interface (250 mg/l)
Author:
Comments: <DIV STYLE="text-align:Left;font-size:12pt"><DIV><DIV><P><SPAN>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><P><SPAN /></P><P><SPAN>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>
Subject: 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.
Category:
Keywords: saline,salinity,isochlor,chloride,encroachment,intrusion,aquifer,geology,hydrogeology,Biscayne,water table,surficial,Lower Tamiami,Sandstone,Mid-Hawthorn
AntialiasingMode: Fast
TextAntialiasingMode: Force
Supports Dynamic Layers: true
MaxRecordCount: 2000
MaxImageHeight: 4096
MaxImageWidth: 4096
Supported Query Formats: JSON, geoJSON, PBF
Supports Query Data Elements: true
Min Scale: 0
Max Scale: 0
Supports Datum Transformation: true
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