Chilkoot River The fish species that are found in the Chilkoot River below the lake outlet are generally the sockeye salmon and Oncorhynchus nerka. In order to enumerate the salmon that pass down the river, the Alaska Department of Fish and Game, Division of Commercial Fisheries established a weir on the river, in 1976, a few hundred yards downstream from the outlet of the river from the lake, to carry out visual count of “the total sockeye escapement (postseason).” A report for the period 1996-2003 gives the counts done at the weir and also quantity estimates of the sockeye fishes. Chilkoot Lake
Sockeye salmon in freshwater lakes. The majority of sockeye spawn in rivers near lakes and juveniles will spend one to two years in the lake before migrating to the ocean, although some populations will migrate to saltwater in their first year. Adult sockeye will spend two to three years in the ocean before returning to freshwater. Females will spawn in 3–5 redds over a period of several days. The eggs usually hatch within six to nine weeks and the fry typically rear in lakes before migrating to the ocean. Males partake in competitive and sneaking tactics, formation of hierarchies, and non-hierarchical groupings