KSN was retained by the City of Riverbank to self-certify the availability of potable groundwater for the years 2015 to 2019. Recent trends in groundwater levels were projected to assess potential well performance and production capabilities as well and reveal potential modifications to existing wells in order to maintain supply. The KSN team reviewed existing available data to characterize recent groundwater trends in order to estimate the availability of groundwater supply over the next three water years.