Mark Johnston, research scientist for Yakama Nation Fisheries, explains the vacuum insertion tube of the salmon transport system at Roza Dam in Yakima. The 1,100-foot vacuum-operated tube allows fish to be moved to a hatchery truck upstream in about 35 seconds.
Mark Johnston, research scientist for Yakama Nation Fisheries, explains the vacuum insertion tube of the salmon transport system at Roza Dam in Yakima. The 1,100-foot vacuum-operated tube allows fish to be moved to a hatchery truck upstream in about 35 seconds. Yakima Herald-Republic Shawn Gust
Mark Johnston, research scientist for Yakama Nation Fisheries, explains the vacuum insertion tube of the salmon transport system at Roza Dam in Yakima. The 1,100-foot vacuum-operated tube allows fish to be moved to a hatchery truck upstream in about 35 seconds. Yakima Herald-Republic Shawn Gust