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Historic stream surveys
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Geological Survey (U.S.)
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11. [Image] Oregon Willamette Valley, sheet no. 7; Historic topo[topographic] map of the Willamette Valley
Surveyed in 1911-1912 and 1913. Contour interval 5 feet. Scale 1/31680Citation -
12. [Image] Oregon Willamette Valley, sheet no. 6; Historic topo[topographic] map of the Willamette Valley
Surveyed in 1909-1911. Contour interval 5 feet. Scale 1/31680Citation -
13. [Image] Oregon Willamette Valley, sheet no. 8; Historic topo[topographic] map of the Willamette Valley
Surveyed in 1911 and 1914.Citation -
14. [Image] Oregon Willamette Valley, sheet no. 3; Historic topo[topographic] map of the Willamette Valley
Surveyed in 1908 and 1909. Contour interval 5 feet. Scale 1/31680Citation -
15. [Image] Oregon Willamette Valley, sheet no. 2; Historic topo[topographic] map of the Willamette Valley
Surveyed in 1908 and 1909. Contour interval 5 feet and 10 feet changing on the 450 foot contour. Scale 1/31680Citation -
16. [Image] Oregon Willamette Valley, sheet no. 9; Historic topo[topographic] map of the Willamette Valley
Surveyed in 1913 and 1914. Contour interval 5 feet and 25 feet, changing on the 450 foot contour. Scale 1/31680Citation -
Subject series H. Forestry 6
Citation