Dams

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"Dammed: The Politics of Loss and Survival in Anishinaabe Territory" explores Canada's hydroelectric boom in the Lake of the Woods area. It complicates narratives of increasing affluence in postwar Canada, revealing that the inverse was true for Indigenous communities along the Winnipeg River.

ICOLD Bulletin 150, Cutoffs for Dams, discusses foundation treatment methods using cutoff-type barriers. High emphasis is given to alluvial deposits throughout this document; however, different materials may require cutoff. The construction of cutoffs has made significant advances mainly through the development of more powerful machinery for drilling and excavation, but also through the introduction of new concepts and techniques, such as jet grouting and deep soil mixing. The following types of cutoffs are presented in this Bulletin: - Diaphragm walls - Vib walls - Pile walls - Superimposed concreted galleries - Jet grouting - Deep mixing These methods are described, and the practical application of each method is illustrated by selected case histories. These case histories also demonstrate how certain difficulties specific to a particular dam site have been dealt with. The performance of cutoffs should be monitored so that their efficiency in reducing flow and piezometric head can be evaluated. Piezometers installed in the foundation upstream and downstream of the cutoff are needed to meet this objective.

Breaching the Peace tells the story of the ordinary citizens who are standing up to the most expensive megaproject in BC history and the government-sanctioned bullying that has propelled it forward. Starting in 2013, journalist Sarah Cox travelled to the Peace River Valley to talk to locals about the Site C dam and BC Hydro’s claim that the clean energy project was urgently needed. She found farmers, First Nations, and scientists caught up in a modern-day David-and-Goliath battle to save the valley, their farms, and traditional lands from wholesale destruction. Told in frank and moving prose, their stories stand as a much-needed cautionary tale at a time when concerns about global warming have helped justify a renaissance of environmentally irresponsible hydro megaprojects around the world.

Hydraulic engineering of dams and their appurtenant structures counts among the essential tasks to successfully design safe water-retaining reservoirs for hydroelectric power generation, flood retention, and irrigation and water supply demands. In view of climate change, especially dams and reservoirs, among other water infrastructure, will and have to play an even more important role than in the past as part of necessary mitigation and adaptation measures to satisfy vital needs in water supply, renewable energy and food worldwide as expressed in the Sustainable Development Goals of the United Nations. This book deals with the major hydraulic aspects of dam engineering considering recent developments in research and construction, namely overflow, conveyance and dissipations structures of spillways, river diversion facilities during construction, bottom and low-level outlets as well as intake structures. Furthermore, the book covers reservoir sedimentation, impulse waves and dambreak waves, which are relevant topics in view of sustainable and safe operation of reservoirs. The book is richly illustrated with photographs, highlighting the various appurtenant structures of dams addressed in the book chapters, as well as figures and diagrams showing important relations among the governing parameters of a certain phenomenon. An extensive literature review along with an updated bibliography complete this book.

This publication provides some information of a nation-wide survey to determine the importance of butter as a source of vitamin A in the diet of the people of the United States.