Mountain States Power Company ladder in the Stayton power canal (Gardner [sic] Ditch);1940-08-09, Location Notes: Stayton power canal (Oregon), Location Notes: Gardiner Ditch (Oregon)
Dry fish ladder at Mountain States Power Plant at Stayton, Oregon (Chinooks fighting tailrace);1940-08-11, Location Notes: Stayton power canal (Oregon), Location Notes: Gardiner Ditch (Oregon)
Fish ladder on the Washougal River upper dam, Location Notes: Lower Columbia River Watershed (Oregon and Washington), Location Notes: Columbia River and tributaries (Oregon and Washington)