Summary: The influence of stream flow and certain physico-chemical properties of the water upon the upstream movement of the pink salmon is described in three streams, two in southeastern Alaska and one in British Columbia. Sashin Creek originates in mountain lakes and maintains a flow great enough to permit the entrance of the adult salmon at all times during their inshore migration. Once the salmon have collected at the mouth of the stream preparatory to entering it they may react favorably to sudden changes in its flow. There appears to be no appreciable relationship between variations in stream temperature and the upstream movement of the salmon. http://www.esajournals.org/doi/abs/10.2307/1929698