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Open Panel of Commission for Hydrology Experts (OPACHE)


The Open Panel of Commission for Hydrology Experts (OPACHE) is the reservoir of scientific and technical expertise that CHy uses to fulfill its mission activities. These activities include participating in specialized hydrologic, hydrometric, and water resources studies; serving on expert advisory teams; contributing to manuals, guidance material, and technical reports; and participating in workshops and expert meetings.

Recognized specialists from National Hydrological Services, research institutes, water resources management agencies, and academia are eligible to become OPACHE members. Experts wishing to participate in WMO activities must first complete an application form and have it endorsed by their country’s Permanent Representative to WMO







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World Meteorological Organization, 7bis, avenue de la Paix, CP No. 2300, CH-1211 Geneva 2, Switzerland - Tel.: +41(0)22 730 81 11 - Fax: +41(0)22 730 81 81
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