Record Details

page 370

Oregon Digital

Field Value
Title page 370
Relation Columbia River
Date 2005-02-22 to 2005-04-11
Rights This item is in the public domain. Acknowledgement of the University of Oregon Libraries as a source is requested.
Type page
Format Scanned from originals using Silverfast AI 6.0 on UMAX Powerlook III flatbed scanner. Scanned images saved as 16 bit grayscale tiffs. 280.588 kb 8 bit - Gray Gamma 2.2 - greyscale Omnipage 14 used to OCR 8 bit grayscale tiffs and generate text files for full text access. 16 bit grayscale tiffs edited in Photoshop 6.0: cropped, rotated, reduced in size, levels adjusted, bit depth reduced to 8 and JPEGs created.
Description under various acts designed to conserve the natural resources of the public domain. River surveys have been made for about 7,000 stream miles in the basin. The resulting maps, at scales of 1: 31,680 and 1: 24,000, show the grades of the streams and the topography of adjacent slopes and valleys. The published sets, known as plan and profile, include many large-scale maps of prospective dam sites. These maps of rivers, dam sites, and reservoir sites in the basin have been published in 15...
Identifier http://oregondigital.org/u?/wwdl,1820

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