After construction view of rock riffle structure below the Railroad culvert credit USFWS ← Previous Next → Construction of rock a riffle structure created navigable water for steelhead and other species Share this:Click to share on Twitter (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Pinterest (Opens in new window)Click to print (Opens in new window)Click to email a link to a friend (Opens in new window)Like this:Like Loading...