Reservoir · Assam · India · CWC · EASTERN region
Kopili (Umrong)
Kopili HES — Umrong Dam
81.1% full
Total capacity
1,052 hm³
Live storage
1,052 hm³
River
Kopili
Basin
Brahmaputra
Primary use
hydropower
Operator
NEEPCO
Coordinates
25.990°N, 93.220°E
Last updated
2026-07-30
Current fill
81.1%vs 7 days ago
0.0%stable
vs 1 year ago
+21.4%year-over-year
7-day trend
→stable
Weekly storage
Fill history — multi-year
About this reservoir
Data source
official
Storage data: CWC (Central Water Commission) Weekly Storage Bulletin, India. 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. 25.990, 93.220 · Open in Google Maps
About Kopili HES — Umrong Dam
As of July 30, 2026, Kopili HES — Umrong Dam is filled to 81.1% of its total capacity, holding roughly 129 hm³ of water out of a maximum 1,052 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it is 21.4 points above its level on the same date a year earlier.
Across the readings we hold for Kopili HES — Umrong Dam — 66 data points between April 3, 2025 and July 30, 2026 — the level has ranged from a low of 25.3% (April 23, 2026) to a high of 81.1% (July 23, 2026). On average the reservoir is fullest around July and at its lowest around March.
It is operated by NEEPCO primarily for hydroelectric power. It lies within the Brahmaputra basin at 25.990°N, 93.220°E.
Key facts
- Current fill level
- 81.1%
- Water stored
- 129 hm³
- Total capacity
- 1,052 hm³
- 7-day change
- No change
- Year-on-year
- ▲ 21.4 pts
- Primary use
- Hydroelectric power
- River
- Kopili
- River basin
- Brahmaputra
- Operator
- NEEPCO
- Coordinates
- 25.990°N, 93.220°E
- Last updated
- July 30, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 30 Jul 2026 | 81.1% | 129 |
| 23 Jul 2026 | 81.1% | 129 |
| 16 Jul 2026 | 80.5% | 128 |
| 9 Jul 2026 | 76.1% | 121 |
| 2 Jul 2026 | 71.1% | 113 |
| 25 Jun 2026 | 64.8% | 103 |
| 4 Jun 2026 | 56.0% | 89 |
| 31 May 2026 | 50.9% | 81 |
| 29 May 2026 | 50.5% | 80 |
| 21 May 2026 | 44.0% | 70 |
| 14 May 2026 | 37.5% | 60 |
| 7 May 2026 | 33.2% | 53 |
Frequently asked questions
What is the current water level of Kopili HES — Umrong Dam?
As of July 30, 2026, Kopili HES — Umrong Dam is at 81.1% of its capacity, holding approximately 129 hm³ of water, according to CWC data.
Is Kopili HES — Umrong Dam reservoir full?
No. As of July 30, 2026, Kopili HES — Umrong Dam is high at 81.1% of its capacity, so it is not full.
Is the water level at Kopili HES — Umrong Dam rising or falling?
The level at Kopili HES — Umrong Dam has been broadly stable over the latest week on record (0.0 points).
How much water can Kopili HES — Umrong Dam hold?
Kopili HES — Umrong Dam has a total capacity of 1,052 hm³.
Where is Kopili HES — Umrong Dam reservoir located?
Kopili HES — Umrong Dam is located in Assam, India, within the Brahmaputra basin (coordinates 25.990°N, 93.220°E).
What is Kopili HES — Umrong Dam used for?
Kopili HES — Umrong Dam is used primarily for hydroelectric power, and is managed by NEEPCO.