23 Unsolved Problems in Hydrology: Advances from India
Modified Last date to respond is Friday, 03rd November 2023
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23 Unsolved Problems in Hydrology: Advances from India

On 10 July, 2023 the IAHS Bureau established a Working Group on Unsolved Problems in Hydrology (UPH). 


The goal of the UPH community initiative, promoted by the Working Group, is to increase the coherence of the scientific process in hydrology (thus overcoming fragmentation) through providing common research subjects; energies the hydrological community through increasing the awareness that we do not fully understand many hydrological processes; and to enable the community to speak with one voice to increase public awareness and enhance funding opportunities for community projects.

In line with the UPH Global initiative and working group, we all shall attempt to establish regional committee.

  • We are pleased to announce the "23 Unsolved Problems in Hydrology in India" initiative.
  • We are launching a wide consultation to identify and review the contributions of the India community to advancing key unsolved problems in hydrology.
  • This initiative was inspired by the 23 Unsolved Problems in Hydrology (UPH) paper (Blöschl et al. 2019 https://doi.org/10.1080/02626667.2019.1620507), and the "23 UPH in Africa and Brazil" initiative.
  • This initiative is currently supported by IAHS and Association of Hydrologists of India (AHI). We hope to further expand and strengthen the community.

Association of Hydrologists of India (AHI)
1. Name:
2. Email:
3. Nationality
4. Main activity:
5. Main background:
6. Name of your institute:
7. Country of your institute:
8. Are you a member of any national or international water related scientific association? For instance, IAHS, EGU, AGU, IWA,  Association of Hydrologists of India (AHI),  Indian Association of Hydrologists  (IAH), Young Hydrological Society (YHS) ?
9. Your research work focus on the:
10. Which UPH topic do you work on?
10. UPH Questions that emerged out of the deliberations in Association of Hydrologists of India (AHI) meeting since 2004. Do you find any of them relevant? Would you like to suggest any edits/reframing of the question? *
11. Do you have 1-3 relevant references (from your research or not) that contribute to one of the UPHs?  Please list it and indicate which UPH it relates to.
12. Do you consider that there is a relevant UPH for India that is not listed in the 23 UPHs? Could you please describe it.
13. Are you interested in getting involved in writing a synthesis on 1 or more UPH topics for India?
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14. Are you due to take part in the forthcoming  Association of Hydrologists of India (AHI) meeting in Coimbatore in Nov 2023?
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15. If you have any comments, we'd love to hear them!
Thank you !
Many thanks for your valuable input! We will keep you informed on the 23 UPH India updates.

Best wishes,

P. Rajendra Prasad, Ankit Agarwal, 
Elango Lakshmanan  and Ashutosh Sharma

A copy of your responses will be emailed to .
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