Reservoir · Assam · India · CWC · EASTERN region
Kopili (Umrong)
Kopili HES — Umrong Dam
56.0% 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
2026-06-04
Current fill
56.0%vs 7 days ago
+5.5%gaining
vs 1 year ago
-12.0%year-over-year
7-day trend
↑rising
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 June 4, 2026, Kopili HES — Umrong Dam is filled to 56.0% of its total capacity, holding roughly 89 hm³ of water out of a maximum 1,052 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has risen by 5.5 percentage points, and it is 12.0 points below its level on the same date a year earlier.
Across the readings we hold for Kopili HES — Umrong Dam — 59 data points between April 3, 2025 and June 4, 2026 — the level has ranged from a low of 25.3% (April 23, 2026) to a high of 74.2% (June 5, 2025). On average the reservoir is fullest around June 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
- 56.0%
- Water stored
- 89 hm³
- Total capacity
- 1,052 hm³
- 7-day change
- ▲ 5.5 pts
- Year-on-year
- ▼ 12.0 pts
- Primary use
- Hydroelectric power
- River
- Kopili
- River basin
- Brahmaputra
- Operator
- NEEPCO
- Coordinates
- 25.990°N, 93.220°E
- Last updated
- June 4, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 4 Jun 2026 | 56.0% | 89 |
| 29 May 2026 | 50.5% | 80 |
| 21 May 2026 | 44.0% | 70 |
| 14 May 2026 | 37.5% | 60 |
| 7 May 2026 | 33.2% | 53 |
| 30 Apr 2026 | 32.6% | 52 |
| 23 Apr 2026 | 25.3% | 40 |
| 16 Apr 2026 | 25.6% | 41 |
| 9 Apr 2026 | 26.6% | 42 |
| 2 Apr 2026 | 26.9% | 43 |
| 27 Mar 2026 | 26.4% | 42 |
| 19 Mar 2026 | 27.4% | 44 |
Frequently asked questions
What is the current water level of Kopili HES — Umrong Dam?
As of June 4, 2026, Kopili HES — Umrong Dam is at 56.0% of its capacity, holding approximately 89 hm³ of water, according to CWC data.
Is Kopili HES — Umrong Dam reservoir full?
No. As of June 4, 2026, Kopili HES — Umrong Dam is within its normal operating range at 56.0% 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 is rising — it gained 5.5 percentage points over the latest week on record.
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.