Title |
Updating the Hoover Dam documents, 1978 / Milton N. Nathanson. |
Creator |
Nathanson, Milton N. |
Subject |
Water resources development -- Law and legislation; rivers |
Spatial Coverage |
Colorado River (Colo.-Mexico) |
OCR Text |
Show Updating the Hoover Dam documents, 1978 / Milton N. Nathanson. |
Publisher |
[Denver, Colo.?] : U.S. Dept. of the Interior, Bureau of Reclamation : [For sale by] the Bureau of Reclamation, Engineering and Research Center ; Washington, D.C. : For sale by the Supt. of Docs., U.S. G.P.O., 1980. |
Contributors |
United States.; Bureau of Reclamation. |
Date |
1978 |
Type |
Text |
Format |
application/pdf |
Digitization Specifications |
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. |
Language |
eng |
Rights Management |
Digital Image Copyright 2005, University of Utah. All Rights Reserved. |
Contributing Institution |
Documents Division (ML), Gov Docs, U.S. Lvl , J. Willard Marriott Library, University of Utah, 295 S 1500 E, Salt Lake City, UT 84112-0860 |
Source Physical Dimensions |
xii, 342 p. : ill. (part col.), col maps (1 fold. inserted) ; 27 cm. |
Scanning Technician |
Backstage Library Works - 1180 S. 800 E. Orem, UT 84097. |
Call Number |
I27.2: H76/ 7/978 |
ARK |
ark:/87278/s690233n |
Setname |
wwdl_documents |
ID |
1137085 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s690233n |
Title |
page XII-32 |
OCR Text |
Show XII-32 UPDATING THE HOOVER DAM DOCUMENTS were based largely on information in the Report on Water for Energy in the Upper Colorado River Basin, prepared by the U.S. Department of the Interior. It should be noted that for alternative 1 only those plants reasonably sure of development were included and none subsequent to 1985 were included. For alternative 2 no plants subsequent to 1988 were projected but for alternative 3 potential plants through the year 2000 were included. The three alternatives reflect three different rates of increase in future upper basin water use and are intended only for illustrative purposes to demonstrate the adequacy or inadequacy of Colorado River water supply under varying assumptions as to basin runoff and basin water demand. Consideration was not given as to whether projected water demands in the upper basin would exceed the upper basin's assured supply or whether such demands in any given state would exceed the state's allocation of upper basin water. It is realized that should such an event occur compensating steps would be necessary or water-based development restricted. Water demand levels in the Lower Colorado River Basin reflect two future situations: prior to initial operation of the Central Arizona project and subsequent to initial operation. In the former situation, full demand levels can be met within compact and other limitations, whereas in the latter case, full demand levels by Arizona and California cannot always be met because of water supply limitations. Results of Model Runs. - The Colorado River Simulation Model is in its trial stages. With the change from a single historical runoff sequence to several theoretically possible sequences, more testing will be required before there can be complete confidence in its operation and the answers it provides. The results given hereafter, thus, should be considered preliminary and subject to further analysis. There are, however, considered adequate for the purpose intended - that of demonstrating the adequacy or inadequacy of Colorado River water supply under varying future conditions. The model operation assumed upper basin deliveries at Lee Ferry of at least 8.25 million acre-feet annually. It took into account all inflow and reservoir and river losses below Lee Ferry. It followed the operating criteria promulgated under provisions of Section 602 (a) of the Colorado River Basin Project Act and accommodated the flood control operating criteria established by the Corps of Engineers. It recognized surplus and shortage levels at Lake Mead which governed the amount of releases for lower basin consumptive uses. With three different projected runoff sequences and three different projected levels of basin water demand buildup, nine different patterns of future water supply-water demand situations were delineated through the model runs. The combination of Trace A (low runoff) and Alternative 3 (high-water demands) presents an extremely poor picture of future water supply adequacy. While the situation portrayed by this combination should occur the chances of it materializing are quite small. By combining Trace C (high runoff after CAP) with Alternative 1 (low-water demands) a highly favorable picture of future water supply adequacy is presented. The chances of this combination occurring likewise are quite small but probably not as remote as the Trace A - Alternative 1 combination. The combination of Trace B - Alternative 2 presents a reasonable middle-ground picture. The following table summarizes the results of the model runs for the three alternative demand schedules matched against the three hydrologic traces. 42 |
Format |
application/pdf |
Resource Identifier |
310728-UUM-UHD-v31a12_page XII-32.jpg |
Source |
Original book: Updating the Hoover Dam documents, 1978 / Milton N. Nathanson. |
Setname |
wwdl_documents |
ID |
1136998 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s690233n/1136998 |