Reservoir · Chhattisgarh · India · CWC · UNKNOWN region
Mahanadi
66.0% of gross capacity
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
2026-10-22
Capacity in TMC
Mahanadi Dam has a gross capacity of 27.1 TMC (767 MCM); it is currently at 66% of gross capacity, holding 17.9 TMC (506 MCM).
- Gross capacity
- 27.1 TMC (767 MCM)
- Live capacity
- 27.1 TMC (767 MCM)
- Current storage
- 17.9 TMC (506 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 CWC, which publishes million cubic metres. The percentage is labelled live or gross only when the stored volume matches that capacity.
Current fill
66.0%vs 7 days ago
-12.4 pplosing
vs 1 year ago
-33.7 ppyear-over-year
7-day trend
↓falling
Drought context
Storage vs October average
84%of normal
66.0% full on 2026-10-22, against an average of 79.0% for October across 4 years of readings (-13.0 points).
Rain over the last three months · 11 October 2026
Moderately wet
In the three months to 11 October 2026 the area around Mahanadi had more rain than normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index +1.30). Rain, not storage. India drought figures →
Weekly storage
Fill history — multi-year
About this reservoir
Data source
official
Storage data: CWC. 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°N, 81.568°E · Open in Google Maps
About Mahanadi
As of October 22, 2026, Mahanadi is filled to 66.0% of its gross capacity, holding 17.9 TMC (506 MCM) of a gross 27.1 TMC (767 MCM). At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has fallen by 12.4 percentage points, and it is 33.7 points below its level on the same date a year earlier.
Across the readings we hold for Mahanadi — 170 data points between June 8, 2023 and October 22, 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. It is at 20.616°N, 81.568°E.
Key facts
- Current fill level
- 66.0% of total capacity
- Water stored
- 17.9 TMC (506 MCM)
- Total capacity
- 27.1 TMC (767 MCM)
- 7-day change
- ▼ 12.4 pp
- Year-on-year
- ▼ 33.7 pp
- Primary use
- Multipurpose
- Operator
- CWC
- Coordinates
- 20.616°N, 81.568°E
- Last updated
- October 22, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 22 Oct 2026 | 66.0% | 506 |
| 15 Oct 2026 | 78.4% | 602 |
| 8 Oct 2026 | 90.0% | 690 |
| 1 Oct 2026 | 97.3% | 746 |
| 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 |