Title |
Ten rivers in America's future, from volume 2, the Report of the President's Water Resources Policy Commission |
Creator |
United States. Water Resources Policy Commission |
Subject |
Rivers; Water resources development; Water-supply; Hydraulic engineering |
Spatial Coverage |
United States |
OCR Text |
Show Report consists of ten basin studies prepared as background data for policy studies. no. 1. The Columbia.--no. 2. The Central Valley of California.--no. 3. The Missouri.--no. 4. The Rio Grande.--no. |
Publisher |
U.S. Government Printing Office |
Date |
1950 |
Type |
Text |
Format |
application/pdf |
Digitization Specifications |
Digitized by Backstage Library Works. Pages were scanned at 400 ppi on Fujitsu fi-5650C sheetfed scanner as 8-bit grayscale or 24-bit RGB uncompressed TIFF images. For ContentDM access the images were resampled to 750 pixels wide and 120 dpi and saved as JPEG (level 8) in PhotoShop CS with Unsharp Mask of 100/.3. Foldout pages larger than 11" x 14" were captured using a BetterLight Super 8K-2 digital camera back on a 4x5 view camera (100mm Schneider APO lens). Oversize images were resampled to 1500 pixels wide. Optical Character Recognition (OCR) by ABBYY FineReader 7.0 with manual review. |
Resource Identifier |
http://content.lib.utah.edu/cgi-bin/docviewer.exe?CISOROOT=/wwdl-doc&CISOPTR=1448 |
Language |
eng |
Relation |
Western Waters Digital Library |
Rights Management |
Digital Image Copyright 2005, Marriott Library, University of Utah. All Rights Reserved. |
Contributing Institution |
J. Willard Marriott Library, University of Utah, 295 S 1500 E, Salt Lake City, UT 84112-0860 |
Source Physical Dimensions |
Book 801 p. ; 26 cm. |
Scanning Technician |
Backstage Library Works, 1180 S. 800 E., Orem, UT 84097 |
Call Number |
LC: HD1694.A5 |
ARK |
ark:/87278/s6r210r8 |
Setname |
wwdl_documents |
ID |
1140007 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6r210r8 |
Title |
page 088 |
OCR Text |
Show Some lands have already been ruined for agricul- tural production, and oilier much larger areas are threatened. Consequently, certain minimum flows must be maintained in the rivers to arrest this salt intrusion. One of the principal reasons for further water resources development is the difference in amount of runoff between the Sacramento and San Joaquin Valleys. The heavier rainfall and smaller area of irrigable land gives the Sacramento Valley a surplus of water while the San Joaquin, especially the southern end, has a large water deficiency. Con- sequently, one of the main objectives in present plans is the transfer of Sacramento Valley water to deficient areas in the San Joaquin. About 40 percent of the area now irrigated in the Central Valley is supplied by pumping from the underlying gravels. These underground basins have been only partially investigated, but are known to be immense. The draft annually exceeds the refill in many portions. This source of water, on hand at all times for domestic, industrial, and irrigation uses, is perhaps one of the most important characteristics of the basin. 88 |
Format |
application/pdf |
Resource Identifier |
115-UUM-TenRivers_page 088.jpg |
Source |
Ten Rivers In America's Future |
Setname |
wwdl_documents |
ID |
1139275 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6r210r8/1139275 |