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Evaluation of Aeration/circulation as a Lake Restoration Technique

Evaluation of Aeration/circulation as a Lake Restoration Technique
Author: Robert A. Pastorok
Publisher:
Total Pages: 68
Release: 1981
Genre: Eutrophication
ISBN:

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Artificial circulation and hypolimnetic aeration are management techniques for oxygenating eutrophic lakes subject to water quality problems, algal blooms, and fishkills. Artificial circulation is achieved by injecting diffused air into lower waters, by mechanical pumping of water from one depth stratum to another, or by inducing turbulence at the surface using large axial-flow pumps. In contrast, hypolimnetic aeration by air or oxygen injection affects primarily bottom waters. In some instances low dissolved oxygen concentrations persist in the metalimnion. In general, both methods lower the concentrations of reduced compounds in lake waters, providing benefits for water supply systems. Aeration may cause supersaturation of nitrogen gas, thereby raising the potential danger of gas bubble disease in downstream fishes.


A guide to aeration

A guide to aeration
Author: Marc Lorenzen
Publisher:
Total Pages:
Release: 1977
Genre:
ISBN:

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Induced Aeration of Small Mountain Lakes

Induced Aeration of Small Mountain Lakes
Author: Lowell E. Leach
Publisher:
Total Pages: 76
Release: 1970
Genre: Fishes
ISBN:

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Summer stratification in small mountain trout-fishery lakes restricts trout habitat to the thin layer of surface water. As atmospheric temperatures increase during later summer months, the epilimnion waters reach temperatures intolerable for trout. A technique of managing trout-fishery lakes, through introduction of compressed air, was studied at Lake Roberts in southern New Mexico during the summer of 1969. Research was conducted to determine the feasibility of induced aeration to control nutrient stratification and dissipation of high-bottom concentrations of hydrogen sulfide. The oxygenation efficiency of the induced aeration system was evaluated, and further research required for optimum development of the systems as management tools for trout-fishery lakes is discussed.


Lake and Reservoir Restoration

Lake and Reservoir Restoration
Author: G. Dennis Cooke
Publisher: Elsevier
Total Pages: 401
Release: 2013-10-22
Genre: Technology & Engineering
ISBN: 1483163253

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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.


Lake and Pond Management Guidebook

Lake and Pond Management Guidebook
Author: Steve McComas
Publisher: CRC Press
Total Pages: 304
Release: 2003-01-30
Genre: Science
ISBN: 0203010086

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The Lake and Pond Management Guidebook is the successor to the bestselling Lake Smarts: The First Lake Maintenance Handbook, the "bible" for small-scale lake and pond improvements, published by the Terrene Institute in 1993. Completely revised and updated, now published by Lewis Publishers, this guidebook contains over 300 ideas and projects includ


Managing Lakes and Reservoirs

Managing Lakes and Reservoirs
Author: North American Lake Management Society
Publisher: University of Wisconsin Press
Total Pages: 400
Release: 2001
Genre: Business & Economics
ISBN:

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Written for the lake user, this third edition testifies to the success and the leadership of EPA's Clean Lakes Program.