Comparison of 2008-2011 data to 2011-2014 data

before
after
View Before ImageView After Image

Detailed Description

TO SHOW TIME INTERVAL COMPARISONS, MOVE THE SLIDER HANDLE (in green) WHICH APPEARS WHEN MOUSE IS OVER IMAGE. Dates of map time interval are in upper left (earlier time interval) or lower right (later time interval). 

Map showing gravity-based groundwater-storage and water-level change in a portion of the Tucson AMA, comparing the change over the time interval of spring 2008 to summer 2011 to the change over the time interval of spring 2011 to summer 2014.