Reservoir · Meghalaya · India · CWC · EASTERN region
Umiam
Umiam Dam (Barapani Lake)
47.7% full
Gross capacity
5.0 TMC (142 MCM)
Live capacity
5.0 TMC (142 MCM)
River
Umiam
Basin
Brahmaputra
Primary use
hydropower
Operator
MeECL
Coordinates
25.690°N, 91.900°E
Last updated
2026-09-10
Capacity in TMC
Umiam Dam has a gross capacity of 5.0 TMC (142 MCM); it is currently at 48% full, holding 2.4 TMC (68 MCM).
- Gross capacity
- 5.0 TMC (142 MCM)
- Live capacity
- 5.0 TMC (142 MCM)
- Current storage
- 2.4 TMC (68 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 the Central Water Commission bulletin, which publishes million cubic metres.
Current fill
47.7%vs 7 days ago
0.0%stable
vs 1 year ago
-35.9%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. 25.690, 91.900 · Open in Google Maps
About Umiam Dam (Barapani Lake)
As of September 10, 2026, Umiam Dam (Barapani Lake) is filled to 47.7% of its total capacity, holding 2.4 TMC (68 MCM) of a gross 5.0 TMC (142 MCM). At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts), and it is 35.9 points below its level on the same date a year earlier.
Across the readings we hold for Umiam Dam (Barapani Lake) — 72 data points between April 3, 2025 and September 10, 2026 — the level has ranged from a low of 41.1% (May 15, 2025) to a high of 100.0% (October 23, 2025). On average the reservoir is fullest around November and at its lowest around July.
It is operated by MeECL primarily for hydroelectric power. It lies within the Brahmaputra basin at 25.690°N, 91.900°E.
Key facts
- Current fill level
- 47.7%
- Water stored
- 2.4 TMC (68 MCM)
- Total capacity
- 5.0 TMC (142 MCM)
- 7-day change
- No change
- Year-on-year
- ▼ 35.9 pts
- Primary use
- Hydroelectric power
- River
- Umiam
- River basin
- Brahmaputra
- Operator
- MeECL
- Coordinates
- 25.690°N, 91.900°E
- Last updated
- September 10, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 10 Sep 2026 | 47.7% | 68 |
| 3 Sep 2026 | 47.7% | 68 |
| 27 Aug 2026 | 42.6% | 60 |
| 20 Aug 2026 | 68.0% | 97 |
| 13 Aug 2026 | 68.0% | 97 |
| 6 Aug 2026 | 66.8% | 95 |
| 30 Jul 2026 | 66.3% | 94 |
| 23 Jul 2026 | 62.5% | 89 |
| 16 Jul 2026 | 58.4% | 83 |
| 9 Jul 2026 | 52.6% | 75 |
| 2 Jul 2026 | 51.0% | 72 |
| 25 Jun 2026 | 50.0% | 71 |