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This data release provides access to a low-altitude, aeromagnetic survey of a part of south-central Washington and north-central Oregon. The survey extends from the Blue Mountains westward to the Cascade Range and covers the Oregon cities of The Dalles, Hermiston, and Milton Freewater and the Washington cities of Richland, Pasco, Kennewick, and Walla Walla. Data were acquired during the summer of 2010 by Goldak Airborne Surveys working under contract to the U.S. Geological Survey. Total magnetic field values were acquired using a fixed-wing aircraft flown at a target elevation of 150 m above terrain (305 m over urban areas) and along flight lines and tie lines spaced 400 m and 4000 m apart, respectively. Flight...
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This data release consists of high quality georeferenced orthophoto mosaics of a 160 kilometer long portion of the Columbia River between Portland and The Dalles, Oregon created from aerial photographs collected in 1935 by the U.S. Army Corps of Engineers. The dataset comprises three GeoTIFF files, each covering about 40-60 kilometers. This metadata document summarizes the entire data release. See attached metadata records for information on the individual mosaics.
    map background search result map search result map USGS 1:62500-scale Quadrangle for The Dalles, OR 1957 USGS 1:62500-scale Quadrangle for The Dalles, OR 1957 USGS 1:125000-scale Quadrangle for The Dalles, OR 1934 USGS 1:62500-scale Quadrangle for The Dalles, WA 1957 USGS 1:125000-scale Quadrangle for The Dalles, WA 1934 USGS 1:125000-scale Quadrangle for The Dalles, WA 1934 USGS 1:250000-scale Quadrangle for The Dalles, OR 1957 USGS 1:250000-scale Quadrangle for The Dalles, OR 1953 USGS 1:250000-scale Quadrangle for The Dalles, OR 1953 USGS 1:250000-scale Quadrangle for The Dalles, OR 1953 USGS 1:250000-scale Quadrangle for The Dalles, OR 1956 High-Resolution Aeromagnetic Survey of the Pasco Area, Washington and Oregon USGS 1:125000-scale Quadrangle for The Dalles, WA 1934 Orthophotograph of the Columbia River between Portland and The Dalles, Oregon, acquired in 1935 USGS 1:62500-scale Quadrangle for The Dalles, OR 1957 USGS 1:62500-scale Quadrangle for The Dalles, OR 1957 USGS 1:62500-scale Quadrangle for The Dalles, WA 1957 USGS 1:125000-scale Quadrangle for The Dalles, OR 1934 USGS 1:125000-scale Quadrangle for The Dalles, WA 1934 USGS 1:125000-scale Quadrangle for The Dalles, WA 1934 USGS 1:125000-scale Quadrangle for The Dalles, WA 1934 Orthophotograph of the Columbia River between Portland and The Dalles, Oregon, acquired in 1935 USGS 1:250000-scale Quadrangle for The Dalles, OR 1957 USGS 1:250000-scale Quadrangle for The Dalles, OR 1953 USGS 1:250000-scale Quadrangle for The Dalles, OR 1953 USGS 1:250000-scale Quadrangle for The Dalles, OR 1953 USGS 1:250000-scale Quadrangle for The Dalles, OR 1956 High-Resolution Aeromagnetic Survey of the Pasco Area, Washington and Oregon