Karluk Investigations 1949. Kodiak Island. "Rough country between Larsen Bay and Karluk Lake - one of the many mishaps enroute while hauling lumber for use in construction of 2-way counting weir on Karluk River."
This image taken at the Frazer Lake weir. Frazer Lake weir consists of a series of "fish ladders" which allow salmon to ascend around a 30' falls, near the outlet of Frazer Lake on the south end of Kodiak Island. Counts are made at the outlet.