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Author: United States. Bureau of Reclamation
Publisher:
ISBN:
Category : Barrages
Languages : en
Pages : 860
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Book Description
Author: United States. Bureau of Reclamation
Publisher:
ISBN:
Category : Barrages
Languages : en
Pages : 860
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Book Description
Author: G. Dennis Cooke
Publisher: Elsevier
ISBN: 1483163253
Category : Technology & Engineering
Languages : en
Pages : 401
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Book Description
Lake and Reservoir Restoration deals with the eutrophication process and the methods to protect, restore, and manage lakes and reservoirs. The most common in-lake techniques or procedures, plus nutrient diversion, are reviewed with regard to their scientific basis, methods of application, known effectiveness, feasibility, drawbacks, and costs. Areas for further research and development are also highlighted. This book is comprised of 16 chapters organized into four sections. After an introduction to the theory of the problem and the restoration technique, the discussion turns to the various restoration methods such as those used for physical and chemical control of nutrients. Diversion and advanced waste treatment, hypolimnetic withdrawal, and dilution and flushing are considered along with phosphorus precipitation and inactivation, sediment oxidation, sediment removal, and hypolimnetic aeration. Case studies and success stories are presented and the costs and potential negative impacts of the methods are examined. The following chapters focus on methods to control plant biomass, including artificial circulation, water-level drawdown, harvesting, biological control, and surface and sediment covers. A chapter on liming acidified lakes concludes this text. This monograph will be useful to professional limnologists and engineers, on-site lake or reservoir managers, and those who are interested in learning about the problems and management of lakes and reservoirs.
Author:
Publisher:
ISBN:
Category : Fish habitat improvement
Languages : en
Pages : 342
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Book Description
Author: Marion Dane Bauer
Publisher: Houghton Mifflin Harcourt
ISBN: 0547534116
Category : Young Adult Fiction
Languages : en
Pages : 69
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Book Description
A Newbery Honor Book. “A gripping, compassionate portrayal of a boy’s struggle with conscience” by the bestselling author of My Mother Is Mine (Kirkus Reviews). While on a bike trip, Joel’s best friend Tony drowns while they are swimming in the forbidden, treacherous Vermilion River. Joel is terrified at having to tell of his disobedience and overwhelmed by his feelings of guilt, even though the daring act was Tony’s idea, and Joel didn’t know that Tony couldn’t swim. But Joel’s loving and protective father will help him deal with the tragic aftermath—and understand that we all must live with the choices we make. “A powerful, soul-stirring novel told simply and well.”—Booklist (starred review) “This is a devastating but beautifully written story of a boy’s all-consuming guilt over the role he plays in the death of his best friend . . . Bauer’s honest and gripping novel joins the ranks of such as Katherine Paterson’s Bridge to Terabithia in its handling of these issues.”—Publishers Weekly “Descriptions are vivid, characterization and dialogue natural, and the style taut but unforced. A powerful, moving book.”—School Library Journal
Author: Henry Van Dyke
Publisher:
ISBN:
Category :
Languages : en
Pages : 378
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Book Description
Author: Golder Associates
Publisher: [Surrey, B.C.?] : Flood Hazard Management Section
ISBN: 9780772649966
Category : Dikes (Engineering)
Languages : en
Pages :
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Book Description
Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 118
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 604
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Book Description
Author: James E. McDonald
Publisher: Washington, D.C. : U.S. Army Corps of Engineers, Engineer Research and Development Center
ISBN:
Category : Arch dams Maintenance repair Case studies
Languages : en
Pages : 272
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Book Description
This study was conducted to identify methods that have been used in the repair and rehabilitation of concrete dams. Information was obtained through literary searches, discussions with project personnel, and visits to project sites. Each case history includes a background of the project, the deficiency that necessitated repair or rehabilitation, and descriptions of materials and methods used in the repair or rehabilitation. When available, the cost of the repair project and the performance of the repair to date have been included. Case histories included in this report cover a range of deficiencies in concrete structures, including cracking, spalling, erosion, leakage, inadequate PMF capacity, expansion resulting from alkali-aggregate reaction, instability, and insufficient storage capacity.
Author:
Publisher: DIANE Publishing
ISBN: 1428906096
Category : Biochemical oxygen demand
Languages : en
Pages : 240
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Book Description
