USGS - science for a changing world

CALFED - San Joaquin River GW

Synoptic Survey 1: August 22 – September 7, 2007

Map showing sampling locations for the August 22 - Sept. 7, 2007 synoptic study


Synoptic Survey 2: August 11-21, 2008

Map showing sampling locations for the August 11-21, 2008 synoptic study




Synoptic Survey 3: September 22-25, 2008

Map showing sampling locations for the  September 22-25, 2007 synoptic study