Download or read book Report to Desert Land Board on Central Oregon Project written by Oregon. Desert Land Board and published by . This book was released on 1915 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report to Desert Land Board on Central Oregon Project written by John Dubuis and published by . This book was released on 2015-07-22 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Report to Desert Land Board on Central Oregon Project: With Special Reference to Seepage Losses and Canal Capacities The following report contains data relative to the physical condition of the Central Oregon Irrigation Company's Project, together with certain conclusions therefrom. These conclusions in brief synopsis are herewith presented. 1. The total water lost in transmission through the canals from point of diversion at the river to place of use on the farmers' land, including losses in farmers' ditches, ranges from 67% to 75% of the total amount diverted from the river. 2. The losses in main canals and laterals from river diversion to point of delivery by the Company at or within one-half mile of the farmers' land, range from 45% to 57% of that diverted. Losses in main canals alone amount to from 25% to 40% of the water diverted from the river. 3. These heavy losses seem to be due to the porous, seamy nature of the lava rock which underlies the greater part of the segregation, to the relatively shallow soil, and to the character of construction of the canals. Caves, underground channels, and sink holes have been noted in places where this rock is exposed. Canals have been built wider and more shallow than proper, in order to avoid rock excavation. Where natural depressions were used the water has been allowed to spread over large areas. Since the loss of water is to a certain degree directly proportional to the wetted area, some of the excess loss is the natural result of this excess area. 4. The soil itself is relatively tight. Recorded losses sometimes run as low as 0.3 cubic foot per square foot of wetted area per 24 hours. Where the seamy rock is encountered however, the losses will run up to 3.0 cubic feet per 24 hours, and in the case of the North Canal the remarkable figure of 45.0 cubic feet per square foot of wetted area was obtained. 5. It is believed that in canals dug entirely in earth without encountering rock or gravel, the loss will be about 0.6 cubic foot per square foot of wetted area in 24 hours. 6. Evaporation loss in comparison with seepage and leakage loss is so small as to be negligible. 7. The greatest losses are in the main canals and the places of their occurrence are thus easily accessible. From this and other data at hand it is probable that losses in canals and laterals can be reduced to 40% of the total water diverted from the river without resorting to expensive methods of lining. 8. The duty of water of 1.8 acre feet per acre in 90 days may be sufficient after the project is well settled and all lands are under cultivation, although the settlers have been using more than this amount. (The proper duty for this or any project is not that which gives the greatest crop yield per unit of water used, but must take into consideration the cost of the land and water, value of crops, cost of labor, and other investment costs, and should be that which shows the greatest net profit in money to the farmer. A proper distinction should be made between the "economic use of water" and the "economic duty of water," as they are not synonymous terms.) About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Report to Desert Land Board on Central Oregon Project with Special Reference to Seepage Losses and Canal Capacities written by Oregon Desert Land Board and published by Franklin Classics. This book was released on 2018-10-14 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Report to Desert Land Board on Central Oregon Project Wi written by John Dubuis and published by Wentworth Press. This book was released on 2019-03-08 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Report to Desert Land Board on Central Oregon Project written by John Dubuis and published by . This book was released on 2017-08-23 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of the Desert Land Board Relative to the Reclamation of Desert Lands Granted to the State Under the Provisions of the Carey Act for the Period Commencing Ending to the Legislative Assembly Regular Session written by Oregon. Desert Land Board and published by . This book was released on 1904 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report to Desert Land Board on Central Oregon Project written by Oregon. Desert Land Board and published by . This book was released on 1915 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biennial Report of the State Land Board written by Oregon. State Land Board and published by . This book was released on 1915 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Final Report Of The Construction written by Oregon Desert Land Board and published by Legare Street Press. This book was released on 2023-07-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides a detailed account of the Tumalo irrigation project, which was initiated in the early 20th century to provide water to the arid regions of central Oregon. The report details the planning, design, and construction of the project, as well as the environmental and social impact of the irrigation on the local community. It is an important resource for scholars studying the history of irrigation and water management in the American West. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Final Report of the Construction written by Oregon. Desert Land Board and published by . This book was released on 1914 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report to the Federal Power Commission on Uses of Deschutes River Oregon written by United States. Federal Power Commission and published by . This book was released on 1922 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report written by Oregon. Desert Land Board and published by . This book was released on 1906 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Irrigation written by United States. Bureau of Agricultural Engineering and published by . This book was released on 1938 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report on Land Planning written by United States. National Resources Board. Land Planning Committee and published by . This book was released on 1935 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Land Available for Agriculture Through Reclamation written by United States. National Resources Board. Land Planning Committee and published by . This book was released on 1936 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Supplementary Report written by United States. National Resources Board. Land Planning Committee and published by . This book was released on 1936 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report on Planning written by United States. National Resources Board. Land Planning Committee and published by . This book was released on 1935 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
