Reservoir · Meghalaya · India · CWC · EASTERN region
Umiam
Umiam Dam (Barapani Lake)
49.1% of gross capacity
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
2026-10-22
Capacity in TMC
Umiam Dam has a gross capacity of 5.0 TMC (142 MCM); it is currently at 49.1% of gross capacity, holding 2.5 TMC (70 MCM).
- Gross capacity
- 5.0 TMC (142 MCM)
- Live capacity
- 5.0 TMC (142 MCM)
- Current storage
- 2.5 TMC (70 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
49.1%vs 7 days ago
-0.8 pplosing
vs 1 year ago
-50.9 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
64%of normal
49.1% full on 2026-10-22, against an average of 77.0% for October across 2 years of readings (-27.9 points).
Rain over the last three months · 11 October 2026
Severely dry
In the three months to 11 October 2026 the area around Umiam had far less rain than normal, a shortfall seen about one year in fifteen. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −1.71). 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. 25.690°N, 91.900°E · Open in Google Maps
About Umiam Dam (Barapani Lake)
As of October 22, 2026, Umiam Dam (Barapani Lake) is filled to 49.1% of its gross capacity, holding 2.5 TMC (70 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 (-0.8 pp), and it is 50.9 points below its level on the same date a year earlier.
Across the readings we hold for Umiam Dam (Barapani Lake) — 77 data points between April 3, 2025 and October 22, 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
- 49.1% of total capacity
- Water stored
- 2.5 TMC (70 MCM)
- Total capacity
- 5.0 TMC (142 MCM)
- 7-day change
- ▼ 0.8 pp
- Year-on-year
- ▼ 50.9 pp
- Primary use
- Hydroelectric power
- River
- Umiam
- River basin
- Brahmaputra
- Operator
- MeECL
- Coordinates
- 25.690°N, 91.900°E
- Last updated
- October 22, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 22 Oct 2026 | 49.1% | 70 |
| 15 Oct 2026 | 49.9% | 71 |
| 8 Oct 2026 | 49.1% | 70 |
| 1 Oct 2026 | 48.9% | 69 |
| 24 Sep 2026 | 48.2% | 68 |
| 17 Sep 2026 | 45.8% | 65 |
| 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 |