Geophysical Data from the 2014 Minute 319 Pulse Flow in the Colorado River Delta

Geophysical methods were used to monitor infiltration during a pulse flow release of water in the Colorado River delta in Mar-May 2014. Electromagnetic-induction methods were used at 14 transects in the limitrophe reach of the River between the U.S. and Mexico, and further south in Mexico. These data are sensitive to variation in soil texture and water content. The repeat direct-current resistivity method was used at two locations to monitor groundwater elevation. Repeat microgravity measurements were made at 25 locations in the southern limitrophe reach to quantify aquifer storage change and specific yield.