Reservoir · Western Australia · Australia · BOM Water Data Online
North Dandalup
57.9% full
Capacity
74.9 hm³
Volume stored
43 hm³
River
North Dandalup River
Year completed
1994
Coordinates
32.516°S, 116.028°E
Last updated
2026-09-07
Current fill
57.9%vs 7 days ago
+0.7%gaining
vs 1 year ago
-11.7%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: 2026-09-07.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -32.516, 116.028 · Open in Google Maps
About North Dandalup
As of September 7, 2026, North Dandalup is filled to 57.9% of its total capacity, holding roughly 43 hm³ of water out of a maximum 75 hm³. At this level the reservoir is within its normal operating range. Of that total, about 74 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.7 pts), and it is 11.7 points below its level on the same date a year earlier.
Across the readings we hold for North Dandalup — 1055 data points between September 11, 2023 and September 7, 2026 — the level has ranged from a low of 48.1% (December 21, 2023) to a high of 70.2% (September 20, 2025). On average the reservoir is fullest around September and at its lowest around June.
The dam at North Dandalup was completed in 1994. It is operated by BOM primarily for water supply. It lies within the North Dandalup River Basin basin at 32.516°S, 116.028°E.
Key facts
- Current fill level
- 57.9%
- Water stored
- 43 hm³
- Total capacity
- 75 hm³
- Usable capacity
- 74 hm³
- 7-day change
- ▲ 0.7 pts
- Year-on-year
- ▼ 11.7 pts
- Primary use
- Water supply
- River
- North Dandalup River
- River basin
- North Dandalup River Basin
- Year completed
- 1994
- Operator
- BOM
- Coordinates
- 32.516°S, 116.028°E
- Last updated
- September 7, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 7 Sep 2026 | 57.9% | 43 |
| 6 Sep 2026 | 57.8% | 43 |
| 5 Sep 2026 | 57.6% | 43 |
| 4 Sep 2026 | 57.5% | 43 |
| 3 Sep 2026 | 57.4% | 43 |
| 2 Sep 2026 | 57.2% | 43 |
| 1 Sep 2026 | 57.2% | 43 |
| 31 Aug 2026 | 57.2% | 43 |
| 30 Aug 2026 | 57.2% | 43 |
| 29 Aug 2026 | 57.1% | 43 |
| 28 Aug 2026 | 57.1% | 43 |
| 27 Aug 2026 | 57.1% | 43 |