| Organizational Involvement (of Roshan Shrestha) |
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| Professional Organization |
| International Association of Hydrological Sciences |
| Member (since 2002) |
| American Geophysics Union |
| Member (since 2004) |
| Asia Pacific Association of Hydrology and Water Resources |
| Member (since 2003) |
| Japan Society of Hydrology and Water Resources |
| Student Member (since 2004) |
| MadhyapurThimi Municipality Engineering Society |
| Joint-coordinator (1998) General secretary (1999-2000) Member (since 1998) |
| Japan Society of Civil Engineers |
| Student Member (since 2000) |
| Nepal Engineers' Association |
| Member (since 1998) |
| Nepal Engineering Council |
| Member (since 2000) |
| NEA Japan Chapter |
| Member (since 2003) |
| Social / Welfare Organization |
| Gwahali Puchah |
| Social co-operation, promotion of culture and traditional activities Secretary (1988 - 1989) Member (1984 to date) |
| Nhyojyah Khalah |
| Promotion of culture, art and music Member (since 1988) |
| Nepal Lipi Guthi |
| Promote,preserve and explore script / sculpture of Nepal Bhasa Member (1988) |
| Nepal Engineering Students' Society |
| Participate students in enginering education development Joint-secretary (1995-1996) Member (1994-2000) |
| Friends' Co-operative Fund |
| Capacity building Secretary (1998-1999) Member (since 1997) |
| Youth Co-operative Fund |
| Social co-operation President (1999-2000) Member (since 1998) |
| Nepalese Students' Association in Japan |
| Student welfare Member (since 2000) Chairman of Election committee (2005) |