Reservoir · Bihar · India · Bihar WRD
Chandan Dam
23.1% of gross capacity
Gross capacity
4.8 TMC (136 MCM)
Live capacity
4.8 TMC (136 MCM)
River
Chandan
Basin
Ganga
Primary use
irrigation
Operator
BIHAR
Coordinates
24.980°N, 86.820°E
Last updated
2026-10-28
Capacity in TMC
Chandan Dam has a gross capacity of 4.8 TMC (136 MCM); it is currently at 23.1% of gross capacity, holding 1.1 TMC (31 MCM).
- Gross capacity
- 4.8 TMC (136 MCM)
- Live capacity
- 4.8 TMC (136 MCM)
- Current storage
- 1.1 TMC (31 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 Bihar WRD, which publishes million cubic metres. The percentage is labelled live or gross only when the stored volume matches that capacity.
Current fill
23.1%vs 22 Oct 2026
-42.7 pplosing
vs 1 year ago
N/ATrend
↓falling
Drought context
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Chandan Dam had rain close to 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 +0.04). Rain, not storage. India drought figures →
Weekly storage
Fill history — multi-year
About this reservoir
Data source
official
Storage data: Bihar WRD.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 24.980°N, 86.820°E · Open in Google Maps
About Chandan Dam
As of October 28, 2026, Chandan Dam is filled to 23.1% of its gross capacity, holding 1.1 TMC (31 MCM) of a gross 4.8 TMC (136 MCM). At this level the reservoir is low.
Since October 22, 2026 the fill level has fallen by 42.7 percentage points.
Across the readings we hold for Chandan Dam — 23 data points between June 25, 2026 and October 28, 2026 — the level has ranged from a low of 0.6% (June 25, 2026) to a high of 95.9% (October 1, 2026).
It is operated by BIHAR primarily for irrigation. It lies within the Ganga basin at 24.980°N, 86.820°E.
Key facts
- Current fill level
- 23.1% of total capacity
- Water stored
- 1.1 TMC (31 MCM)
- Total capacity
- 4.8 TMC (136 MCM)
- Change since October 22, 2026
- ▼ 42.7 pp
- Primary use
- Irrigation
- River
- Chandan
- River basin
- Ganga
- Operator
- BIHAR
- Coordinates
- 24.980°N, 86.820°E
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 23.1% | 31 |
| 23 Oct 2026 | 26.1% | 35 |
| 22 Oct 2026 | 65.8% | 37 |
| 15 Oct 2026 | 83.8% | 47 |
| 8 Oct 2026 | 94.7% | 53 |
| 1 Oct 2026 | 95.9% | 54 |
| 24 Sep 2026 | 50.1% | 28 |
| 17 Sep 2026 | 19.8% | 27 |
| 10 Sep 2026 | 38.9% | 22 |
| 3 Sep 2026 | 19.8% | 11 |
| 28 Aug 2026 | 6.1% | 8 |
| 27 Aug 2026 | 15.1% | 8 |