Snow-capped Mount St. Helens Click to zoom in Silver Lake Snow-capped Mount Adams Swift Creek Reservoir Yale Lake Lake Merwin Columbia River Vancouver, Washington Portland, Oregon Scale This is called zero fill This is called zero fill Click to zoom out a Landsat image
15 September 1973, Landsat 1 MSS bands 4 2 1
1983 -- 1988 -- 1992 -- 1999 -- Map