ABSTRACTThe potential for artificial ground‐water recharge through shallow shafts is being conducted at the Leaky Acres Recharge Project in Fresno, California. The research is directed toward developing methods for constructing and placing filter‐pack materials and procedures for periodically cleaning filter materials to regenerate initial intake rates. This report presents preliminary results of two differently constructed shallow shafts.Over a period of 94 days, 50.8 X 103cu m (13.4 million gals) of screened canal water was recharged. Redevelopment with a submersible pump regenerated one shaft to 109 percent of its original intake rate. Piezometric observations indicated that most of the clogging occurred within the filter‐pack mat