Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Google Analytics Dashboard for Two maps of Dade County, Florida, showing the average annual water levels, 1950, and the approximate average water levels for the period 1940-1950

Two maps of Dade County, Florida, showing the average annual water levels, 1950, and the approximate average water levels for the period 1940-1950

URI: https://pubs.usgs.gov/publication/ofr5280

Display as: 
 
 
Hover over a data point to view session metrics.