California Drought | CGPS Station P304

Hydrograph for continuous GPS station P304 located in Mendota, CA.  Long-term groundwater-level data are fundamental to the resolution of many of the most complex problems dealing with groundwater availability and sustainability. Significant periods of time - years to decades - typically are required to collect water-level data needed to assess the effects of climate variability, to monitor the effects of regional aquifer development, or to obtain data sufficient for analysis of water-level trends.