Citation Rankings
Highly Cited Researchers
International Water Management Institute (IWMI) Highly Cited Researchers Citation Rankings 2025
Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: Scientists Last 6 years Citation Index, Universities Total Citations Rankings 2025 and Universities Last 6 Years Citations Rankings 2025
* Total Citation Counts Rankings
Ranking Based On Selection :1
drought
water
climate change
policy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,706
4,197
0.203
* Total Citation Counts Rankings
Ranking Based On Selection :2
hydrology and water resources
climate change
ecosystems
food systems
sustainability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,711
8,146
0.460
* Total Citation Counts Rankings
Ranking Based On Selection :3
Resource recovery & reuse
Urban agriculture
Safe wastewater use
Soil fertility & plant nutrition
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,477
8,331
0.477
* Total Citation Counts Rankings
Ranking Based On Selection :4
Water Resources Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,350
10,331
0.837
* Total Citation Counts Rankings
Ranking Based On Selection :5
Climate change
water policy
food security
poverty
energ economics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,476
5,059
0.483
* Total Citation Counts Rankings
Ranking Based On Selection :6
climate change
adaptation
groundwater
energy
agri-food systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,271
6,988
0.754
* Total Citation Counts Rankings
Ranking Based On Selection :7
Climate Change
Environment
Food Systems
Health
Water-Energy-Food Nexus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,054
7,318
0.909
* Total Citation Counts Rankings
Ranking Based On Selection :8
Soil
Water
Land and Crop Management
modelling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,826
3,274
0.418
* Total Citation Counts Rankings
Ranking Based On Selection :9
water quality
soils
river basin management
irrigation
water futures and scenarios
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,760
4,129
0.532
* Total Citation Counts Rankings
Ranking Based On Selection :10
water resources management
wetlands
livelihoods
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,042
3,277
0.465
* Total Citation Counts Rankings
Ranking Based On Selection :11
water development
gender
poverty eradication
water law
community-driven development
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,973
2,681
0.384
* Total Citation Counts Rankings
Ranking Based On Selection :12
Hydrology
Climate change
Cryosphere
Water-Food Nexus
climate resilient WASH
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,752
5,128
0.892
* Total Citation Counts Rankings
Ranking Based On Selection :13
Water management
Irrigation Performance Assessment
Impact assessment
Vulnerability and Poverty assessment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,534
1,885
0.341
* Total Citation Counts Rankings
Ranking Based On Selection :14
food & water security
Africa
climate change
scaling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,311
3,158
0.595
* Total Citation Counts Rankings
Ranking Based On Selection :15
groundwater management
conjunctive use
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,220
2,728
0.523
* Total Citation Counts Rankings
Ranking Based On Selection :16
climate risk
sustainable development
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,525
3,768
0.833
* Total Citation Counts Rankings
Ranking Based On Selection :17
Natural Resource Management
Peri-urban agriculture
Agriculture Water Management
Sanitation
Soil fertility
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,282
1,716
0.401
* Total Citation Counts Rankings
Ranking Based On Selection :18
water quality
water pollution
water reuse
river basins
water resources management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,702
3,025
0.817
* Total Citation Counts Rankings
Ranking Based On Selection :19
Climate Change
Water Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,565
2,373
0.666
* Total Citation Counts Rankings
Ranking Based On Selection :20
Hydrology
Remote Sensing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,564
2,160
0.606
* Total Citation Counts Rankings
Ranking Based On Selection :21
Agricultural system
ecosystem services
agricultural water management
sustainability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,272
1,817
0.555
* Total Citation Counts Rankings
Ranking Based On Selection :22
Hydrology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,181
2,039
0.641
* Total Citation Counts Rankings
Ranking Based On Selection :23
Hydrology & Water Resources Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,103
1,663
0.536
* Total Citation Counts Rankings
Ranking Based On Selection :24
River health
agroecology
aquatic ecosystems
e-flows
sustainable development
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,969
1,731
0.583
* Total Citation Counts Rankings
Ranking Based On Selection :25
Resource Recovery Reuse
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,434
698
0.287
* Total Citation Counts Rankings
Rankings
37,437
10
1
Ranking Based On Selection: 1
Rachael Mcdonnell
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,706
4,197
0.203
drought
water
climate change
policy
* Total Citation Counts Rankings
Rankings
46,351
13
2
Ranking Based On Selection: 2
Stefan Uhlenbrook
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,711
8,146
0.460
hydrology and water resources
climate change
ecosystems
food systems
sustainability
* Total Citation Counts Rankings
Rankings
47,232
14
3
Ranking Based On Selection: 3
Pay Drechsel
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,477
8,331
0.477
Resource recovery & reuse
Urban agriculture
Safe wastewater use
Soil fertility & plant nutrition
* Total Citation Counts Rankings
Rankings
74,443
18
4
Ranking Based On Selection: 4
Mohammad Mohsin Hafeez
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,350
10,331
0.837
* Total Citation Counts Rankings
Rankings
90,737
22
5
Ranking Based On Selection: 5
Munir A Hanjra
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,476
5,059
0.483
Climate change
water policy
food security
poverty
energ economics
* Total Citation Counts Rankings
Rankings
104,331
25
6
Ranking Based On Selection: 6
Aditi Mukherji
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,271
6,988
0.754
climate change
adaptation
groundwater
energy
agri-food systems
* Total Citation Counts Rankings
Rankings
122,269
31
7
Ranking Based On Selection: 7
Tafadzwanashe Mabhaudhi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,054
7,318
0.909
Climate Change
Environment
Food Systems
Health
Water-Energy-Food Nexus
* Total Citation Counts Rankings
Rankings
126,262
33
8
Ranking Based On Selection: 8
Bharat Sharma
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,826
3,274
0.418
Soil
Water
Land and Crop Management
modelling
* Total Citation Counts Rankings
Rankings
127,453
35
9
Ranking Based On Selection: 9
Simon Langan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,760
4,129
0.532
water quality
soils
river basin management
irrigation
water futures and scenarios
* Total Citation Counts Rankings
Rankings
141,493
38
10
Ranking Based On Selection: 10
Matthew Mccartney
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,042
3,277
0.465
* Total Citation Counts Rankings
Rankings
143,020
39
11
Ranking Based On Selection: 11
Barbara Van Koppen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,973
2,681
0.384
water development
gender
poverty eradication
water law
community-driven development
* Total Citation Counts Rankings
Rankings
174,071
56
12
Ranking Based On Selection: 12
Santosh Nepal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,752
5,128
0.892
Hydrology
Climate change
Cryosphere
Water-Food Nexus
climate resilient WASH
* Total Citation Counts Rankings
Rankings
180,853
61
13
Ranking Based On Selection: 13
Upali Amarasinghe
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,534
1,885
0.341
Water management
Irrigation Performance Assessment
Impact assessment
Vulnerability and Poverty assessment
* Total Citation Counts Rankings
Rankings
188,136
67
14
Ranking Based On Selection: 14
Sander J Zwart
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,311
3,158
0.595
food & water security
Africa
climate change
scaling
* Total Citation Counts Rankings
Rankings
191,331
69
15
Ranking Based On Selection: 15
Paul Pavelic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,220
2,728
0.523
* Total Citation Counts Rankings
Rankings
219,459
79
16
Ranking Based On Selection: 16
Simon Parkinson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,525
3,768
0.833
* Total Citation Counts Rankings
Rankings
230,938
87
17
Ranking Based On Selection: 17
Olufunke Cofie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,282
1,716
0.401
Natural Resource Management
Peri-urban agriculture
Agriculture Water Management
Sanitation
Soil fertility
* Total Citation Counts Rankings
Rankings
263,497
101
18
Ranking Based On Selection: 18
Javier Mateo-Sagasta
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,702
3,025
0.817
water quality
water pollution
water reuse
river basins
water resources management
* Total Citation Counts Rankings
Rankings
272,137
105
19
Ranking Based On Selection: 19
Luna Bharati
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,565
2,373
0.666
Climate Change
Water Management
* Total Citation Counts Rankings
Rankings
272,220
106
20
Ranking Based On Selection: 20
Naga Manohar Velpuri
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,564
2,160
0.606
* Total Citation Counts Rankings
Rankings
292,803
117
21
Ranking Based On Selection: 21
Amare Haileslassie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,272
1,817
0.555
Agricultural system
ecosystem services
agricultural water management
sustainability
* Total Citation Counts Rankings
Rankings
299,845
121
22
Ranking Based On Selection: 22
Alemseged Tamiru Haile
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,181
2,039
0.641
* Total Citation Counts Rankings
Rankings
306,156
125
23
Ranking Based On Selection: 23
Alok K Sikka
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,103
1,663
0.536
Hydrology & Water Resources Management
* Total Citation Counts Rankings
Rankings
317,601
133
24
Ranking Based On Selection: 24
Cws Dickens
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,969
1,731
0.583
River health
agroecology
aquatic ecosystems
e-flows
sustainable development
* Total Citation Counts Rankings
Rankings
372,122
162
25
Ranking Based On Selection: 25
Philip Amoah
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,434
698
0.287