Shapefile and summary tables for the approximate inland extent of saltwater intrusion at the base of the Biscayne aquifer in 2022, Miami-Dade County, Florida

The U.S. Geological Survey (USGS) cooperated with Miami-Dade County to map the approximate inland extent of saltwater intrusion in the Biscayne aquifer in eastern Miami-Dade County, Florida in 2022. This map is a continuation of a series of maps, the most recent of which was published in 2018, which have helped to track the position of the saltwater interface over time and have improved understanding of the rate of movement of the saltwater interface. To estimate the position of the saltwater interface, relevant data including chloride concentrations, specific conductance, and bulk conductivity from time-series electromagnetic induction logs collected by various organizations including the Florida Keys Aqueduct Authority (FKAA), Florida [...]