Pyramid Lake Scenic Byway
Marble Bluff Fish Passage Facility, NV

The Marble Bluff Fish Passage Facility is part of the Lahontan National Fish Hatchery Complex. It consists of four major components: Marble Bluff Dam, fish lock, fishway and fish handling building. It aids the spawning of the endangered fish of Pyramid Lake: the cui-ui (chasmistes cujus) and Lahontan cutthroat trout. The fish are no longer able to access their old spawning grounds because of the dam and the change in the lake's elevation in the last century. The facility houses a "fish lock," similar to an elevator, that lifts the fish around the dam and up into the river for spawning. Visitors are able to see the fish outside in the months of April and May during the spawning runs. US Fish and Wildlife also provide tours in this area.