Reservoir · Nagaland · India · CWC · EASTERN region
Doyang
Doyang HEP Dam
60.4% of gross capacity
Gross capacity
18.9 TMC (535 MCM)
Live capacity
18.9 TMC (535 MCM)
River
Doyang
Basin
Brahmaputra
Primary use
hydropower
Operator
NEEPCO
Coordinates
26.420°N, 94.350°E
Last updated
2026-10-22
Capacity in TMC
Doyang Dam has a gross capacity of 18.9 TMC (535 MCM); it is currently at 60.4% of gross capacity, holding 11.4 TMC (323 MCM).
- Gross capacity
- 18.9 TMC (535 MCM)
- Live capacity
- 18.9 TMC (535 MCM)
- Current storage
- 11.4 TMC (323 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
60.4%vs 7 days ago
-1.3 pplosing
vs 1 year ago
-7.1 ppyear-over-year
7-day trend
↓falling
Drought context
Storage vs October average
93%of normal
60.4% full on 2026-10-22, against an average of 65.0% for October across 2 years of readings (-4.6 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Doyang 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 −0.91). Rain, not storage. India drought figures →
Weekly storage
Fill history — multi-year
About this reservoir
Data source
official
Storage data: CWC. CWC region: EASTERN.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 26.420°N, 94.350°E · Open in Google Maps
About Doyang HEP Dam
As of October 22, 2026, Doyang HEP Dam is filled to 60.4% of its gross capacity, holding 11.4 TMC (323 MCM) of a gross 18.9 TMC (535 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 1.3 percentage points, and it is 7.1 points below its level on the same date a year earlier.
Across the readings we hold for Doyang HEP Dam — 77 data points between April 3, 2025 and October 22, 2026 — the level has ranged from a low of 31.4% (May 22, 2025) to a high of 69.9% (September 18, 2025). On average the reservoir is fullest around November and at its lowest around May.
It is operated by NEEPCO primarily for hydroelectric power. It lies within the Brahmaputra basin at 26.420°N, 94.350°E.
Key facts
- Current fill level
- 60.4% of total capacity
- Water stored
- 11.4 TMC (323 MCM)
- Total capacity
- 18.9 TMC (535 MCM)
- 7-day change
- ▼ 1.3 pp
- Year-on-year
- ▼ 7.1 pp
- Primary use
- Hydroelectric power
- River
- Doyang
- River basin
- Brahmaputra
- Operator
- NEEPCO
- Coordinates
- 26.420°N, 94.350°E
- Last updated
- October 22, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 22 Oct 2026 | 60.4% | 323 |
| 15 Oct 2026 | 61.7% | 330 |
| 8 Oct 2026 | 59.3% | 317 |
| 1 Oct 2026 | 57.6% | 308 |
| 24 Sep 2026 | 59.3% | 317 |
| 17 Sep 2026 | 65.0% | 348 |
| 10 Sep 2026 | 69.0% | 369 |
| 3 Sep 2026 | 65.4% | 350 |
| 27 Aug 2026 | 66.0% | 353 |
| 20 Aug 2026 | 63.0% | 337 |
| 13 Aug 2026 | 66.7% | 357 |
| 6 Aug 2026 | 69.0% | 369 |