IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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IAHR Membership categories

IAHR Membership categories are as follows:

2017 Membership Fees

Membership Category High Income Countries* Low Income Countries*
Base Members 90 € 45 €
Senior Members (> 65 years) 45 € 22 €
Young Professionals (< 30 years) 45 € 22 €
Institute small (< 450 employees) 700 € 350 €
Institute large (> 450 employees) 1250 € 625 €
Institutional Members 0 € 0 €
Lifetime Members (one-off charge) 270 € 135 €
National Members 45 € 22 €
Student Affiliates 10 € 5 €
Young Professional Affiliates 22 € 11 €

*IAHR Membership is available on a two-tier fee structure with fees considerably lower for members from Lower income countries. Countries are classified on the World Bank Classification Index. Low and Middle income countries are classified as IAHR as "lower" fee rate. Check here to see whether your country is included in the High or Low income bracket