| River Basin-wise Number of Hydrological Observations Sites in India (As on 30.09.2019) | ||||||||
| Basin | G | GD | GDQ | GDS | GDSQ | GQ | SG&Met | Total |
| Brahmani and Baitarni | ||||||||
| Cauvery Basin | ||||||||
| East Flowing Rivers Between Mahanadi and Pennar | ||||||||
| East Flowing Rivers Between Pennar and Kanyakumari | ||||||||
| Ganga/Brahmaputra/ Meghna/Barak Basin | ||||||||
| Godavari Basin | ||||||||
| Indus Basin | ||||||||
| Krishna Basin | ||||||||
| Mahanadi Basin | ||||||||
| Mahi Basin | ||||||||
| Narmada Basin | ||||||||
| Pennar Basin | ||||||||
| Sabarmati Basin | ||||||||
| Subernarekha Basin | ||||||||
| Tapi Basin | ||||||||
| WFR From Tapi to Tadri | ||||||||
| WFR From Tadri to Kanyakumari | ||||||||
| WFR of Kutch and Saurashtra | ||||||||
| Area of Inland Drainage in Rajasthan Desert | ||||||||
| Minor Rivers Draining Myanmar (Burma) and Bangladesh | ||||||||
| Total | ||||||||
