Reservoir · Western Australia · Australia · BOM Water Data Online
Wellington
42.5% full
Capacity
184.9 hm³
Volume stored
79 hm³
River
Collie River
Year completed
1933
Coordinates
33.384°S, 116.009°E
Last updated
2026-09-06
Current fill
42.5%vs 7 days ago
+1.0%gaining
vs 1 year ago
-9.1%year-over-year
7-day trend
→stable
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: 2026-09-06.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -33.384, 116.009 · Open in Google Maps
About Wellington
As of September 6, 2026, Wellington is filled to 42.5% of its total capacity, holding roughly 79 hm³ of water out of a maximum 185 hm³. At this level the reservoir is within its normal operating range. Of that total, about 184 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+1.0 pts), and it is 9.1 points below its level on the same date a year earlier.
Across the readings we hold for Wellington — 1068 data points between September 11, 2023 and September 6, 2026 — the level has ranged from a low of 29.3% (May 9, 2024) to a high of 62.9% (October 4, 2023). On average the reservoir is fullest around October and at its lowest around May.
The dam at Wellington was completed in 1933. It is operated by BOM primarily for water supply. It lies within the Collie River Basin basin at 33.384°S, 116.009°E.
Key facts
- Current fill level
- 42.5%
- Water stored
- 79 hm³
- Total capacity
- 185 hm³
- Usable capacity
- 184 hm³
- 7-day change
- ▲ 1.0 pts
- Year-on-year
- ▼ 9.1 pts
- Primary use
- Water supply
- River
- Collie River
- River basin
- Collie River Basin
- Year completed
- 1933
- Operator
- BOM
- Coordinates
- 33.384°S, 116.009°E
- Last updated
- September 6, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 6 Sep 2026 | 42.5% | 79 |
| 5 Sep 2026 | 42.4% | 78 |
| 4 Sep 2026 | 42.2% | 78 |
| 3 Sep 2026 | 42.1% | 78 |
| 2 Sep 2026 | 42.0% | 78 |
| 1 Sep 2026 | 41.9% | 77 |
| 31 Aug 2026 | 41.7% | 77 |
| 30 Aug 2026 | 41.5% | 77 |
| 29 Aug 2026 | 41.3% | 76 |
| 28 Aug 2026 | 41.2% | 76 |
| 27 Aug 2026 | 41.0% | 76 |
| 26 Aug 2026 | 40.8% | 75 |