Reservoir · Maharashtra · India · CWC · UNKNOWN region
Koyana
90.2% of gross capacity
Gross capacity
93.7 TMC (2,652 MCM)
Live capacity
93.7 TMC (2,652 MCM)
Primary use
multiple
Operator
CWC
Coordinates
17.401°N, 73.752°E
Last updated
2026-10-22
Capacity in TMC
Koyana Dam has a gross capacity of 93.7 TMC (2,652 MCM); it is currently at 90.2% of gross capacity, holding 84.5 TMC (2,392 MCM).
- Gross capacity
- 93.7 TMC (2,652 MCM)
- Live capacity
- 93.7 TMC (2,652 MCM)
- Current storage
- 84.5 TMC (2,392 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
90.2%vs 7 days ago
-2.5 pplosing
vs 1 year ago
-9.8 ppyear-over-year
7-day trend
↓falling
Drought context
Storage vs October average
92%of normal
90.2% full on 2026-10-22, against an average of 98.0% for October across 2 years of readings (-7.8 points).
Rain over the last three months · 11 October 2026
Severely dry
In the three months to 11 October 2026 the area around Koyana 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 −1.80). Rain, not storage. India drought figures →
Weekly storage
Fill history — multi-year
About this reservoir
Data source
official
Storage data: CWC. CWC region: UNKNOWN.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 17.401°N, 73.752°E · Open in Google Maps
About Koyana
As of October 22, 2026, Koyana is filled to 90.2% of its gross capacity, holding 84.5 TMC (2,392 MCM) of a gross 93.7 TMC (2,652 MCM). At this level the reservoir is high.
Over the most recent week on record the fill level has fallen by 2.5 percentage points, and it is 9.8 points below its level on the same date a year earlier.
Across the readings we hold for Koyana — 77 data points between April 3, 2025 and October 22, 2026 — the level has ranged from a low of 9.4% (June 25, 2026) to a high of 100.0% (August 26, 2025). On average the reservoir is fullest around September and at its lowest around June.
It is operated by CWC primarily for multiple purposes. It is at 17.401°N, 73.752°E.
Key facts
- Current fill level
- 90.2% of total capacity
- Water stored
- 84.5 TMC (2,392 MCM)
- Total capacity
- 93.7 TMC (2,652 MCM)
- 7-day change
- ▼ 2.5 pp
- Year-on-year
- ▼ 9.8 pp
- Primary use
- Multipurpose
- Operator
- CWC
- Coordinates
- 17.401°N, 73.752°E
- Last updated
- October 22, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 22 Oct 2026 | 90.2% | 2,392 |
| 15 Oct 2026 | 92.7% | 2,459 |
| 8 Oct 2026 | 96.7% | 2,564 |
| 1 Oct 2026 | 100.0% | 2,652 |
| 24 Sep 2026 | 100.0% | 2,652 |
| 17 Sep 2026 | 100.0% | 2,652 |
| 10 Sep 2026 | 100.0% | 2,652 |
| 3 Sep 2026 | 100.0% | 2,652 |
| 27 Aug 2026 | 100.0% | 2,652 |
| 20 Aug 2026 | 99.5% | 2,640 |
| 13 Aug 2026 | 96.8% | 2,567 |
| 6 Aug 2026 | 93.5% | 2,480 |