Reservoir · Western Australia · Australia · BOM Water Data Online
Manjimup
70.5% full
Capacity
1.6 hm³
Volume stored
1 hm³
Year completed
1967
Coordinates
34.279°S, 116.046°E
Last updated
2026-09-06
Current fill
70.5%vs 7 days ago
+0.1%gaining
vs 1 year ago
+6.1%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. -34.279, 116.046 · Open in Google Maps
About Manjimup
As of September 6, 2026, Manjimup is filled to 70.5% of its total capacity, holding roughly 1 hm³ of water out of a maximum 2 hm³. 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 (+0.1 pts), and it is 6.1 points above its level on the same date a year earlier.
Across the readings we hold for Manjimup — 1026 data points between September 11, 2023 and September 6, 2026 — the level has ranged from a low of 27.3% (July 16, 2024) to a high of 75.3% (November 27, 2025). On average the reservoir is fullest around September and at its lowest around May.
The dam at Manjimup was completed in 1967. It is operated by BOM primarily for water supply.
Key facts
- Current fill level
- 70.5%
- Water stored
- 1 hm³
- Total capacity
- 2 hm³
- 7-day change
- ▲ 0.1 pts
- Year-on-year
- ▲ 6.1 pts
- Primary use
- Water supply
- Year completed
- 1967
- Operator
- BOM
- Coordinates
- 34.279°S, 116.046°E
- Last updated
- September 6, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 6 Sep 2026 | 70.5% | 1 |
| 5 Sep 2026 | 70.5% | 1 |
| 4 Sep 2026 | 70.5% | 1 |
| 3 Sep 2026 | 70.5% | 1 |
| 2 Sep 2026 | 70.5% | 1 |
| 1 Sep 2026 | 70.6% | 1 |
| 31 Aug 2026 | 70.6% | 1 |
| 30 Aug 2026 | 70.4% | 1 |
| 29 Aug 2026 | 70.2% | 1 |
| 28 Aug 2026 | 70.0% | 1 |
| 27 Aug 2026 | 70.0% | 1 |
| 26 Aug 2026 | 70.0% | 1 |