Steam production data from southeast Geysers＇ wells surrounding Unit 13 injection well CA 956A-1 and Unit 16 injection well Barrows-1 were analyzed to estimate steam decline rates with and without water injection. Such information was then utilized to estimate annual and cumulative injectate recovery factors in Unit 13 and Unit 16 wellfields. Production and injection data from SMUDGEO#1 and Bear Canyon wellfields were also analyzed to obtain recovery of the injectate in those areas. The methodology and results of this study can be applied to the design of future injection projects in vapor-dominated systems.