Reservoir · Chhattisgarh · India · CWC · UNKNOWN region
Mahanadi
96.2% full
Gross capacity
27.1 TMC (767 MCM)
Live capacity
27.1 TMC (767 MCM)
Primary use
multiple
Operator
CWC
Coordinates
20.616°N, 81.568°E
Last updated
2026-09-24
Capacity in TMC
Mahanadi Dam has a gross capacity of 27.1 TMC (767 MCM); it is currently at 96% full, holding 26.1 TMC (738 MCM).
- Gross capacity
- 27.1 TMC (767 MCM)
- Live capacity
- 27.1 TMC (767 MCM)
- Current storage
- 26.1 TMC (738 MCM)
TMC is thousand million cubic feet, the unit used in Indian water reporting. 1 TMC = 28.3168 million cubic metres (MCM). Figures are converted from the Central Water Commission bulletin, which publishes million cubic metres.
Current fill
96.2%vs 7 days ago
-1.5%losing
vs 1 year ago
+10.4%year-over-year
7-day trend
→stable
Drought context
Storage vs September average
119%of normal
96.2% full on 2026-09-24, against an average of 81.0% for September across 4 years of readings (+15.2 points).
Rain over the last three months · 21 September 2026
Very wet
In the three months to 21 September 2026 the area around Mahanadi had much more rain than normal, seen about one year in fifteen. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index +1.67). Rain, not storage. India drought figures →
Weekly storage
Fill history — multi-year
About this reservoir
Data source
official
Storage data: CWC (Central Water Commission) Weekly Storage Bulletin, India. CWC region: UNKNOWN.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 20.616, 81.568 · Open in Google Maps
About Mahanadi
As of September 24, 2026, Mahanadi is filled to 96.2% of its total capacity, holding 26.1 TMC (738 MCM) of a gross 27.1 TMC (767 MCM). At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-1.5 pts), and it is 10.4 points above its level on the same date a year earlier.
Across the readings we hold for Mahanadi — 166 data points between June 8, 2023 and September 24, 2026 — the level has ranged from a low of 5.0% (June 27, 2024) to a high of 99.9% (October 16, 2025). On average the reservoir is fullest around August and at its lowest around May.
It is operated by CWC primarily for multiple purposes.
Key facts
- Current fill level
- 96.2%
- Water stored
- 26.1 TMC (738 MCM)
- Total capacity
- 27.1 TMC (767 MCM)
- 7-day change
- ▼ 1.5 pts
- Year-on-year
- ▲ 10.4 pts
- Primary use
- Multipurpose
- Operator
- CWC
- Coordinates
- 20.616°N, 81.568°E
- Last updated
- September 24, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 24 Sep 2026 | 96.2% | 738 |
| 17 Sep 2026 | 97.7% | 749 |
| 10 Sep 2026 | 94.9% | 728 |
| 3 Sep 2026 | 97.4% | 747 |
| 27 Aug 2026 | 90.0% | 690 |
| 20 Aug 2026 | 87.5% | 671 |
| 13 Aug 2026 | 84.2% | 646 |
| 6 Aug 2026 | 79.7% | 611 |
| 30 Jul 2026 | 50.0% | 384 |
| 23 Jul 2026 | 47.5% | 364 |
| 16 Jul 2026 | 47.4% | 364 |
| 9 Jul 2026 | 47.9% | 367 |