Table 2.
Population status and distribution of Ganges river dolphin in various tributaries of the Ganges River in India
| River | Segment | No. of Dolphin | Year | Reference | Remarks |
|---|---|---|---|---|---|
| Yamuna | From confluence of Chambal river to Yamuna-Ganga confluence at Allahabad (250 km) | 31 | 2012 | Pers. comm. S. Behera | |
| Girwa | India/Nepal border to Girijapuri Barrage (approx. 20 km) | 39 | 2012 | Pers. comm. S. Behera | This is a protected area, Katarniaghat Gharial Sanctuary |
| Ghaghara | Girijapuri Barrage to Deorighat (505 km) | 295 | 2006 | WWF-Nepal (2006) | |
| Rapti | 15–20 km | 8 | 2012 | Pers. comm. S. Behera | |
| Saryu | 22 km | 16 | 2012 | Pers. comm. S. Behera | |
| Chambal | Rajghat to Panchnada (approx. 550 km) | 85 | 2012 | Pers. comm. S. Behera | |
| Sone | From Uttar Pradesh/Bihar border to its confluence with Ganges about 35 km upstream Patna in the state of Bihar (approx. 300 km) | 0 | 2001 | Sinha and Sharma (2003b) | Not enough water to sustain dolphin in this stretch |
| Sone | Between Bicchi in Madhya Pradesh to Banjari (130 km) | 10 | 1998 | Sinha et al. (2000) | These dolphins were sighted in some deep pools in Madhya Pradesh |
| Sarda | Sarda Barage to Palia (approx. 100 km) | 0 | 1994 | Sinha and Sharma (2003a) | Not enough water to sustain dolphin in this stretch |
| Kosi | Between Kosi Barrage to Kursela (approx. 200 km) | 85 | 2001 | Sinha and Sharma (2003b) | |
| Gandak | Gandak Barrage to Gandak-Ganges confluence at Patna (approx. 320 km) | 257 | 2010 | Choudhary et al. (2012) | |
| Ken | Confluence with Yamuna to Sindhan Kalan village (30 km) | 8 | 1998 | Sinha et al. (2000) | |
| Betwa | Confluence with Yamuna to Orai (84 km) | 6 | 1998 | Sinha et al. 2000 | |
| Sind | Confluence with Yamuna to 110 km upstream | 5 | 1998 | Sinha et al. 2000 | |
| Rupnarayan | Gadiara to Mankur (42 km), West Bengal | 18 | 2006 | WWF-Nepal (2006) |