India24 states · CWC official data

Reservoir Watch

Weekly storage for 317 reservoirs across 24 states, with multi-year history — from the Central Water Commission (CWC) weekly bulletins and state water portals.

Average fill

61.3%

Total capacity

236 km³

Reservoirs

317

Critical

Low level

Fill by state

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Status:Critical (<20%)Low (20–40%)Normal / High (>40%)States without colour = no CWC reservoirs

States shown as N/A

The following 12 states and union territories have no CWC-monitored storage reservoirs and appear as N/A on the map: Andaman & Nicobar, Arunachal Pradesh, Chandigarh, Dadra & Nagar Haveli, Daman & Diu, Delhi, Haryana, Jammu & Kashmir, Lakshadweep, Manipur, Puducherry and Sikkim. Together they account for less than ~1% of India's total water storage capacity — their reservoirs are either run-of-river schemes, canal headworks, or small HEP projects not tracked in the CWC Weekly Storage Bulletin.

India at a glance

National average fill

61.3%

144,674 of 236,042 hm³ storedacross reservoirs with live data

Reservoirs

317

States

Total capacity

236.3 km³

Volume stored

144.7 km³

Critical

Low level

Coverage: the CWC national programme monitors 166 strategic reservoirs (~71% of India's 257.8 BCM national capacity); combined with state water portals, this page tracks 317 reservoirs with weekly updates and multi-year history. Last reading: 2026-09-11.

National fill — multi-year

By state

Sorted by capacity

Madhya Pradesh

12 reservoirs

1 low

Average fill

74.9%

26,387 hm³ storedView →

Gujarat

17 reservoirs

1 critical

Average fill

52.4%

13,238 hm³ storedView →

Maharashtra

35 reservoirs

1 critical

Average fill

85.1%

20,481 hm³ storedView →

Odisha

11 reservoirs

2 low

Average fill

54.9%

11,604 hm³ storedView →

Telangana

9 reservoirs

1 critical

Average fill

57.0%

11,835 hm³ storedView →

Karnataka

18 reservoirs

1 low

Average fill

90.1%

18,141 hm³ storedView →

Himachal Pradesh

3 reservoirs

Average fill

46.3%

8,578 hm³ storedView →

Andhra Pradesh

108 reservoirs · 107 with live data

35 critical

Average fill

39.7%

5,120 hm³ storedView →

Uttar Pradesh

6 reservoirs

1 low

Average fill

46.2%

5,691 hm³ storedView →

Rajasthan

8 reservoirs

1 critical

Average fill

42.1%

3,148 hm³ storedView →

Chhattisgarh

6 reservoirs

Average fill

68.5%

4,254 hm³ storedView →

Uttarakhand

3 reservoirs

Average fill

64.8%

3,993 hm³ storedView →

Jharkhand

7 reservoirs

1 low

Average fill

24.9%

1,499 hm³ storedView →

Kerala

27 reservoirs

3 critical

Average fill

80.6%

4,840 hm³ storedView →

Tamil Nadu

35 reservoirs · 27 with live data

15 critical

Average fill

42.5%

2,087 hm³ storedView →

Punjab

1 reservoir

Average fill

37.0%

1,214 hm³ storedView →

West Bengal

1 reservoir

Average fill

32.3%

403 hm³ storedView →

Assam

2 reservoirs

Average fill

18.2%

224 hm³ storedView →

Tripura

1 reservoir

Average fill

30.7%

305 hm³ storedView →

Mizoram

1 reservoir

Average fill

104.9%

750 hm³ storedView →

Nagaland

1 reservoir

Average fill

69.0%

369 hm³ storedView →

Bihar

3 reservoirs

2 critical

Average fill

43.3%

218 hm³ storedView →

Goa

1 reservoir

Average fill

100.0%

227 hm³ storedView →

Meghalaya

1 reservoir

Average fill

47.9%

68 hm³ storedView →

Andaman & Nicobar

No CWC data

Average fill

N/A

Not tracked in CWC bulletin

Arunachal Pradesh

No CWC data

Average fill

N/A

Not tracked in CWC bulletin

Chandigarh

No CWC data

Average fill

N/A

Not tracked in CWC bulletin

Dadra & Nagar Haveli

No CWC data

Average fill

N/A

Not tracked in CWC bulletin

Daman & Diu

No CWC data

Average fill

N/A

Not tracked in CWC bulletin

Delhi

No CWC data

Average fill

N/A

Not tracked in CWC bulletin

Haryana

No CWC data

Average fill

N/A

Not tracked in CWC bulletin

Jammu & Kashmir

No CWC data

Average fill

N/A

Not tracked in CWC bulletin

Lakshadweep

No CWC data

Average fill

N/A

Not tracked in CWC bulletin

Manipur

No CWC data

Average fill

N/A

Not tracked in CWC bulletin

Puducherry

No CWC data

Average fill

N/A

Not tracked in CWC bulletin

Sikkim

No CWC data

Average fill

N/A

Not tracked in CWC bulletin

All reservoirs

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Dataset coverage

88%of national storage capacity has public data

Tracked

317

reservoirs

With data

317

reservoirs

Tracked capacity

236,250

hm³

Source: CWC — Central Water Commission (India) weekly storage bulletin

Combines the CWC national weekly bulletin (166 strategic reservoirs, ~71% of national capacity) with state water portals; together this tracks most of India's large-reservoir storage, updated weekly with a multi-year history.

About reservoirs in India

As of September 11, 2026, the reservoirs we track across India that report live levels hold roughly 144,674 hm³ of water — about 61.3% of their combined capacity. Taken together, India's reservoirs are within their normal operating range.

Across the region, 59 reservoirs are at critically low levels and 43 are low. Bhoothathankettu (Barrage) is the fullest at 744.0%, while Sathaiyar Odai is the lowest at 0.0%.

Over the most recent week on record, 38 reservoirs rose and 36 reservoirs fell across India.

Storage figures for India come from CWC; the most recent reading is from September 11, 2026. Each reservoir below links to its own page with full history and seasonal context.

India at a glance

Reservoirs tracked: 317
Average fill: 61.3%
Water stored: 144,674 hm³
Combined capacity: 236,250 hm³
At critically low levels: 59
Fullest: Bhoothathankettu (Barrage) (744.0%)
Lowest: Sathaiyar Odai (0.0%)
Last updated: September 11, 2026