i12 Salinity Contours
Data represents maximum up-estuary intrusion of the 1 ppt salinity contour. The lines represent 1000 ppt chloride per million, measured 1½ hours after high tide. This data contains contours for 1921-1990.
Data files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
CSV | Download | CSV | 05/30/25 |
Shapefile | Download | ZIP | 05/30/25 |
GeoJSON | Download | GEOJSON | 05/30/25 |
KML | Download | KML | 05/30/25 |
Supporting files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
ArcGIS Hub Dataset | HTML | 05/30/25 | |
ArcGIS GeoService | ARCGIS GEOSERVICES REST API | 05/30/25 |