41     1604 Black Rock Desert-Humboldt
41     1705 The Snake River Basin
41     1706 Lower Snake
41     1707 The Columbia River Basin
41     1708 The Columbia River Basin
41     1709 The Willamette River Basin
41     1710 Oregon-Washington Coastal
41     1712 Oregon Closed Basins
41     1801 Klamath-Northern California Coastal
41     1802 The Sacramento River Basin