The GHG Measurement Guidelines are an outcome of the United Nations Educational, Scientific and Cultural Organization (UNESCO) /IHA GHG Status of freshwater reservoirs Research Project. The Guidelines were launched at the 2010 HydroVision International Conference in Charlotte, USA.

GHG Measurement Guidelines provide 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 Guidelines cover concepts and processes involved in GHG measurements, approaches to conducting field measurements, and guidance on calculating results.

"This milestone publication draws from ongoing research hosted by IHA, in collaboration with the International Hydrological Programme (IHP) of UNESCO, and has benefited from the collaboration of numerous research institutions and scientists its peer-review group," states Richard Taylor, IHA Executive Director said.

The guidelines aim to promote scientifically rigorous field measurements and evaluate net emissions from global freshwater reservoirs, build standardized, credible set of data from sampled reservoirs, and develop predictive modeling and guidance/assessment tools for mitigation of GHG emissions.