GHG Measurement Guidelines for Freshwater Reservoirs

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

Guidance covers:

  • concepts and processes involved in making such measurements,
  • the approach to conducting field measurements, and
  • guidance on calculating results.

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

To order a copy(s) of the GHG Measurement Guidelines simply download the combined order form and terms and conditions of use, by clicking on the following link, complete it and fax it back to IHA on +44 208 643 5600 or email a scanned copy to

GHG Measurement Guidelines: 
Order form and terms and conditions of use

If you have any queries regarding the terms and conditions of use of the GHG Measurement Guidelines, please contact

Please note that whilst the electronic version of the GHG Measurement Guidelines is available free of charge, the printed version is charged at GBP 60 to cover production and distribution costs.