Reservoir · Victoria · Australia · BOM Water Data Online
Dartmouth
78.8% full
Capacity
3,856.2 hm³
Volume stored
3039 hm³
River
Mitta Mitta River
Year completed
1979
Coordinates
36.686°S, 147.643°E
Last updated
2026-10-26
Current fill
78.8%vs 7 days ago
+0.2 ppgaining
vs 1 year ago
+6.2 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
96%of normal
78.8% full on 2026-10-26, against an average of 82.4% for October across 4 years of readings (-3.6 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Dartmouth had rain close to normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −0.18). Rain, not storage. Australia drought figures →
Data source: Bureau of Meteorology — Water Data Online (KiWIS) — daily mean storage volume, quality-controlled. Capacity from the BOM Water Storages ArcGIS layer (total design capacity in ML). Last reading: 2026-10-26.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 36.686°S, 147.643°E · Open in Google Maps
About Dartmouth
As of October 26, 2026, Dartmouth is filled to 78.8% of its total capacity, holding 3,039 hm³ of water out of a maximum 3,856 hm³. At this level the reservoir is within its normal operating range. Of that total, 3,785 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.2 pp), and it is 6.2 points above its level on the same date a year earlier.
Across the readings we hold for Dartmouth — 1011 data points between October 28, 2023 and October 26, 2026 — the level has ranged from a low of 64.6% (March 17, 2026) to a high of 99.3% (October 28, 2023). On average the reservoir is fullest around December and at its lowest around June.
The dam at Dartmouth was completed in 1979. It is operated by BOM primarily for water supply. It lies within the Mitta Mitta River Basin basin at 36.686°S, 147.643°E.
Key facts
- Current fill level
- 78.8% of total capacity
- Water stored
- 3,039 hm³
- Total capacity
- 3,856 hm³
- Usable capacity
- 3,785 hm³
- 7-day change
- ▲ 0.2 pp
- Year-on-year
- ▲ 6.2 pp
- Primary use
- Water supply
- River
- Mitta Mitta River
- River basin
- Mitta Mitta River Basin
- Year completed
- 1979
- Operator
- BOM
- Coordinates
- 36.686°S, 147.643°E
- Last updated
- October 26, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 26 Oct 2026 | 78.8% | 3,039 |
| 25 Oct 2026 | 78.7% | 3,035 |
| 24 Oct 2026 | 78.7% | 3,033 |
| 23 Oct 2026 | 78.6% | 3,033 |
| 22 Oct 2026 | 78.6% | 3,032 |
| 21 Oct 2026 | 78.6% | 3,031 |
| 20 Oct 2026 | 78.6% | 3,030 |
| 19 Oct 2026 | 78.6% | 3,029 |
| 18 Oct 2026 | 78.5% | 3,028 |
| 17 Oct 2026 | 78.5% | 3,027 |
| 16 Oct 2026 | 78.5% | 3,025 |
| 15 Oct 2026 | 78.4% | 3,024 |