This presentation discusses the nature and chronology of the Berryessa Creek site, CA-SCl-593, in light of frequent flooding known to have occurred in the region of the deposit. From archeological samples and cultural features excavated from the site it has been determined that the deposit functioned as a habitation site for a relatively short period of time. Radiocarbon dates from the upper and lower strata placed the antiquity between approximately 1320 ± 70 and 1660 ± 80 B.P. This short duration of the deposit is seen to result from the frequent flooding known to have occurred in this portion of the Santa Clara Valley during prehistoric times. An examination of other nearby sites and their chronological ranges supports this interpretation of flooding and indicates a general pattern of settlement relocation at this time in the lower elevations of the valley.