Geology

Geology

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  • (-) Geological Survey (U.S.) (9)
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  • (-) Oregon Digital (9)
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Searched for: Geology
 

  1. Oregon Willamette Valley, sheet no. 5; Historic topo[topographic] map of the Willamette Valley

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    Surveyed in 1911. Contour interval 5 feet. Scale 1/31680

  2. Oregon Willamette Valley, sheet no. 4; Historic topo[topographic] map of the Willamette Valley

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    Surveyed in 1910. Contour interval 5 feet. Scale 1/31680

  3. Oregon Willamette Valley, sheet no. 7; Historic topo[topographic] map of the Willamette Valley

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    Surveyed in 1911-1912 and 1913. Contour interval 5 feet. Scale 1/31680

  4. Oregon Willamette Valley, sheet no. 6; Historic topo[topographic] map of the Willamette Valley

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    Surveyed in 1909-1911. Contour interval 5 feet. Scale 1/31680

  5. Oregon Willamette Valley, sheet no. 8; Historic topo[topographic] map of the Willamette Valley

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    Surveyed in 1911 and 1914.

  6. Oregon Willamette Valley, sheet no. 3; Historic topo[topographic] map of the Willamette Valley

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    Surveyed in 1908 and 1909. Contour interval 5 feet. Scale 1/31680

  7. Oregon Willamette Valley, sheet no. 2; Historic topo[topographic] map of the Willamette Valley

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    Surveyed in 1908 and 1909. Contour interval 5 feet and 10 feet changing on the 450 foot contour. Scale 1/31680

  8. Oregon Willamette Valley, sheet no. 9; Historic topo[topographic] map of the Willamette Valley

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    Surveyed in 1913 and 1914. Contour interval 5 feet and 25 feet, changing on the 450 foot contour. Scale 1/31680

  9. Map of Columbia River and Sauvie Island, 1934

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    Map shows plans for proposed pumping plant, drainage canals and levees for flood control.

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