Table 1.

Basin number, name, geographical area, number of wells used, specific yield (S_y), groundwater level depth range, and average annual precipitation

Basin no.	Basin name	Area (km2)	Wells	Sy	GWL Depth Range (m)	Precipitation (mm/yr)
1	Indus Basin (Indian part)	453932	140	0.095	0 – 78.8	545
2a	Ganges Basin	808334	861	0.044	0 – 60.6	1088
2b	Brahmaputra Basin	186422	152	0.087	0 – 19.6	2323
2c	Barak and others Basin	45622	6	0.045	0 – 6.1	2759
3	Godavari Basin	302064	460	0.023	0 – 35.0	1255
4	Krishna Basin	254743	547	0.022	0 – 48.1	1078
5	Cauvery Basin	85624	302	0.024	0 – 59.3	1344
6	Subarnarekha Basin	25792	22	0.035	0 – 14.6	1555
7	Brahmani and Baitarni Basin	51894	87	0.057	0 – 13.7	1537
8	Mahanadi Basin	139659	167	0.039	0 – 33.2	1452
9	Pennar Basin	54243	100	0.022	0 – 47.5	800
10	Mahi Basin	38337	55	0.029	0 – 34.3	1010
11	Sabarmati Basin	30679	36	0.023	0 – 30.9	949
12	Narmada Basin	92671	114	0.021	0 – 30.8	1219
13	Tapi Basin	63923	87	0.020	0 – 38.0	1066
14	West flowing rivers South of Tapi Basin	111644	178	0.021	0 – 35.0	2536
15	East flowing rivers between Mahanadi and Godavari Basin	46243	78	0.035	0 – 21.2	1498
16	East flowing rivers between Godavari and Krishna Basin	10345	27	0.066	0 – 20.7	1208
17	East flowing rivers between Krishna and Pennar Basin	23336	32	0.019	0 – 26.9	961
18	East flowing rivers between Pennar and Cauvery Basin	63646	219	0.023	0 – 49.0	1154
19	East flowing rivers South of Cauvery Basin	38646	104	0.023	0 – 24.4	1121
20	West flowing rivers of Kutch and Saurashtra including Luni Basin	184441	133	0.024	0 – 51.5	616