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IHA publishes GHG measurement guidelines for reservoirs

The International Hydropower Association (IHA) offers its GHG Measurement Guidelines for Freshwater Reservoirs, a standard for measuring greenhouse gas (GHG) emissions from reservoirs.

The guidelines, a key outcome of the UNESCO/IHA GHG Status of Freshwater Reservoirs research project, were launched at a session held by IHA at the recent HydroVision International conference in Charlotte, N.C.

The guidelines provide individuals responsible for this area with a comprehensive tool to assess the GHG status of freshwater reservoirs, including definitive guidance on measurement and qualification of emissions resulting from the formation of reservoirs.

With the concept of global application being at the forefront of the development of the GHG guidelines, IHA has ensured that the methodology contained within the publication is applicable to all climate types and reservoir conditions.

By providing the tools required to determine net GHG emissions in a selected set of reservoirs, IHA's intention is to ensure that results gained will be used to develop predictive tools, thereby reducing the necessity of intensive field measurements in the future. Shared results from the use of these guidelines should contribute to this intention.

IHA's next steps include promoting field measuring programs that comply with the proposed method, developing training programs for taking measurements, developing predictive modeling tools to assess the GHG status of unmonitored reservoirs and potential new sites, and developing guidance and assessment tools to mitigate GHG emissions at vulnerable sites.

Through ongoing collaboration, the guidelines are to be used within initiatives in North America and Southeast Asia. IHA is interested in working with all organizations intending to carry out reservoir monitoring campaigns and invites parties to contact Dr. Joel Goldenfum, E-mail:

– To order a free pdf or a printed version for GBP60 (US$92), visit the IHA website:

Book available on balancing fisheries management, water use

The American Fisheries Society offers Balancing Fisheries Management and Water Uses for Impounded River Systems.

This 697-page book contains papers that describe both historical and current issues associated with balancing fisheries management with other uses of water in impounded systems. The book is intended to help fisheries administrators, managers, and researchers working to optimize fisheries resources that are subject to constraints within large and small impounded river basis, the society says.

Papers are divided into seven areas:

– To order this book for $69, visit the Internet:

CEATI offers reports on cavitation, seepage investigation

CEATI International Inc. announces availability of two reports: On-Line Cavitation Monitoring and A Guide to Temperature Measurements for Seepage Investigation and Monitoring of Embankment Dams.

On-line cavitation monitoring technologies provide knowledge of a unit's cavitation behavior with or without minimal visual inspection, the report says. These technologies offer a prediction of when cavitation damage will reach the due repair limit, thus reducing inspection outages and optimizing repair planning. This report identifies on-line monitoring systems, evaluates their effectiveness, offers a comparison based on technical parameters, and identifies potential improvement options.

The second report says temperature measurements can be a valuable complement to conventional seepage monitoring to detect seepage in dams. Small seepage flow changes can be detected, and the method will be especially useful to detect and follow internal erosion processes, the report says. This report is intended to give a deeper knowledge how to use temperature measurements to monitor embankment dam seepage, including the principles, measurement techniques, and application.

– To purchase these reports, visit the Internet:

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