Guidelines for the Assessment of Uncertainty for Hydrometric Measurement (WMO-No. 1097)
Guidelines for the Assessment of Uncertainty for Hydrometric Measurement
Technical > Guides and other guidance
World Meteorological Organization (WMO)
In view of the increasing pressure on water resources, National Hydrological Services (NHSs) worldwide are faced with the challenge to deliver hydrological services of high quality, timeliness and proven credibility, to assist the decision making process of water and natural resources managers. Nowadays, it is commonly expected that these services must be based on information that includes an accurate assessment of its uncertainty. Stream discharge, the basic hydrological variable, is no exception, yet most measurements are still reported as a value without any information on its associated uncertainty. It is therefore very appropriate that the WMO Commission for Hydrology has undertaken the project for the Assessment of the Performance of Flow Measurement Instruments and Techniques, with the participation of experts from the International Association of Hydrological Sciences (IAHS), the International Association for Hydro-Environment Engineering and Research (IAHR), the Association of Hydro- Meteorological Equipment Industry (HMEI) and International Organization for Standardization (ISO).