The Hydropower Report of IHA is an annual publication that takes an expanded look at hydropower-related developments around the world, as well as giving a review of our activities for the year.

Building on previous activity reports, the 2013 Hydropower Report has an expanded section on the hydropower sector globally and regionally, and reviews our activities over the last year.

The report includes:

• An overview of global trends, with key figures for the past 12 months
• Expanded reports on developments in the hydropower sector at a regional level
• Review of our activities, including sustainability, hydropower development and communications
• Information about our meetings and events, including the upcoming IHA 2013 World Congress

A major milestone has been reached in the UNESCO/IHA Greenhouse Gas Status of Freshwater Reservoirs project, with the launch of the GHG Measurement Guidelines for Freshwater Reservoirs, a landmark publication and the current standard on measuring emissions from reservoirs.

The publication provides individuals responsible in 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.

The guidance covers:

• Concepts and processes involved in making such measurements
• The approach to conducting field measurements
• Guidance on calculating results

With the concept of global application being at the forefront of the development of the GHG Measurement Guidelines, we have 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, our intention is to ensure that the results gained will be utilised to develop predictive tools, thereby avoiding the necessity of such intensive field measurements in the future. We anticipate that shared results from the use of these guidelines will contribute to this intention.