Download or read book Delta Levees Investigation written by California. Department of Water Resources and published by . This book was released on 1982 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Delta Levees Investigation written by California Dept of Water Resources 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 on the state of California's levee system offers a comprehensive analysis of the risks posed by floods and other natural disasters. Drawing on decades of research and experience, this book provides an invaluable resource for anyone concerned with the safety and sustainability of our water infrastructure. 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 Levee Failures in the Sacramento San Joaquin River Delta written by Frank Hopf and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Between 1850 and 1922, agriculturalists built 1,700 kilometers of levees to convert 250,000 hectares of tidal marsh to farmland where the San Joaquin and Sacramento Rivers enter the San Francisco Bay (the Delta). Drained, farmed and isolated from the water channels, the organic soils behind the levees subsided to elevations as low as 8 meters below sea level, turning "levees" into "dams" that hold back water constantly. Engineers built water transfer projects in the mid-20th century, transferring water from the south Delta to 25 million Californians who now rely on the "dams" accidentally converted into supply channels. In 1972, however, a levee failure caused a salt-water intrusion into the Delta, raising the prominence of the polemic Peripheral Canal which, if built would replace the levees in the trans-Delta water transport role. Levee failures in 2004 (the Delta) and 2005 (New Orleans) have re-ignited the debate, fueled by comments made by public officials who warned that the Delta levees posed more risk of failure than did the pre-Katina Louisiana levees. This background motivates two research questions: What are the social perspectives regarding levee failures of the experts managing the Delta; and what is the history of levee failures that might support their perspectives? The research employed Q-Method to identify and describe four social perspectives: Delta Sustainers, Abandon the Levees, Levee Pragmatists, and Multi-Purpose Levee Advocates. A critical element underlying differences among the perspectives revolved around the perceived history of failures of Delta levees. This dissertation employed semi-structured interviews, archival record searches, and historic map and aerial photograph comparisons to compile a history of 265 levee failures since 1868, many of which are referenced to location, segment, and levee type. In addition, the dissertation compiled a list of emergency repairs and successful flood-fights. The history of failures indicates that important levees of the Delta have performed significantly better than previously identified. Sharing these social perspectives and research results among the key actors addressing Delta issues may lead to improved consensus decisions.

Download or read book Office Report Delta Test Levees Investigation written by California. Department of Water Resources and published by . This book was released on 1963 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interim Report to the California State Legislature on the Sacramento San Joaquin Delta Levees Study written by California. Department of Water Resources and published by . This book was released on 1978 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Delta Levees written by California. Department of Water Resources and published by . This book was released on 1973 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Second Interim Report to the California State Legislature on the Sacramento San Joaquin Delta Levees Study written by California. Department of Water Resources and published by . This book was released on 1979 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Third Interim Report to the California State Legislature on the Sacramento San Joaquin Delta Levees Study written by California. Department of Water Resources and published by . This book was released on 1980 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Discovering and Rediscovering the Fragility of Levees and Land in the Sacramento San Joaquin Delta 1870 1879 and Today written by John Thompson and published by . This book was released on 1982 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sacramento San Joaquin Delta Feasibility Report and Water Resource Study written by and published by . This book was released on 1982 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CALFED Delta Levee System Integrity Program written by CALFED Bay-Delta Program and published by . This book was released on 1998 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transcript of Hearing on Proposed plan for Improvement of the Delta Levees Bulletin 192 Department of Water Resources written by California. Legislature. Assembly. Committee on Water and published by . This book was released on 1975 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Levee Decisions and Sustainability for the Sacramento San Joaquin Delta written by Robyn Jean Suddeth and published by . This book was released on 2009 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Sacramento-San Joaquin Delta's fragile levee system is subject to several physical realities that make them increasingly prone to failure. State planners face the challenge of preparing for future Delta flooding. This study presents an economic method for approaching the evaluation of Delta island levee upgrades and repairs. A Levee Decision Analysis Model (LDAM) is applied to the question: How should the state optimally prioritize levee upgrade and repair efforts in the Delta? We focus on 34 major agricultural islands that make up most of the Delta's Primary Zone and include all non-urban subsided islands. This initial analysis indicates that it is economically optimal for the state to not upgrade all 34 Delta islands examined, mostly due to the high cost of levee upgrades that produce little improvement in levee reliability. When we assume increased effectiveness of upgrades, it becomes optimal to upgrade some islands. Others are never optimally upgraded, even under the most optimistic scenario. Our analysis also suggests that from an economic perspective, taking into account land and asset values, it is not cost effective to repair between 18 and 23 of these islands when they fail. When property values for all islands were doubled in a sensitivity analysis, only four islands of those originally not repaired become cost effective to repair. The LDAM model presented here is a useful approach for Delta policy-makers. It provides a quantitative framework for answering several relevant questions regarding reasonable levee upgrade and repair investments. These initial results may act as a springboard for discussion, and the LDAM model as a working framework for developing an optimal strategy. An important and inescapable conclusion of this analysis is that maintaining the current Delta landscape is unlikely to be economical from a business or land use perspective.

Download or read book Pilot Levee Maintenance Study written by California. Department of Water Resources and published by . This book was released on 1967 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Long Term Levee Protection Plan written by CALFED Bay-Delta Program and published by . This book was released on 1999 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Plan for Improvement of the Delta Levees written by California. Department of Water Resources and published by . This book was released on 1975 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Delta Levees and Channels written by Bay-Delta Oversight Council. Levee and Channel Management Technical Advisory Committee and published by . This book was released on 1994 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: