Reservoir · Western Australia · Australia · BOM Water Data Online
Serpentine Pipehead
75.2% full
Capacity
2.6 hm³
Volume stored
2 hm³
River
Serpentine River
Year completed
1957
Coordinates
32.390°S, 116.075°E
Last updated
2026-10-24
Current fill
75.2%vs 7 days ago
+4.1 ppgaining
vs 1 year ago
+67.4 ppyear-over-year
7-day trend
↑rising
Drought context
Storage vs October average
138%of normal
75.2% full on 2026-10-24, against an average of 54.3% for October across 4 years of readings (+20.9 points).
Rain over the last three months · 11 October 2026
Moderately dry
In the three months to 11 October 2026 the area around Serpentine Pipehead had well below normal rain, a shortfall seen about one year in six. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −1.33). 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: 2026-10-24.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 32.390°S, 116.075°E · Open in Google Maps
About Serpentine Pipehead
As of October 24, 2026, Serpentine Pipehead is filled to 75.2% of its total capacity, holding 1.97 hm³ of water out of a maximum 2.6 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has risen by 4.1 percentage points, and it is 67.4 points above its level on the same date a year earlier.
Across the readings we hold for Serpentine Pipehead — 1065 data points between October 28, 2023 and October 24, 2026 — the level has ranged from a low of 1.8% (November 30, 2025) to a high of 89.4% (May 7, 2025). On average the reservoir is fullest around May and at its lowest around December.
The dam at Serpentine Pipehead was completed in 1957. It is operated by BOM primarily for water supply. It lies within the Serpentine River Basin basin at 32.390°S, 116.075°E.
Key facts
- Current fill level
- 75.2% of total capacity
- Water stored
- 1.97 hm³
- Total capacity
- 2.6 hm³
- 7-day change
- ▲ 4.1 pp
- Year-on-year
- ▲ 67.4 pp
- Primary use
- Water supply
- River
- Serpentine River
- River basin
- Serpentine River Basin
- Year completed
- 1957
- Operator
- BOM
- Coordinates
- 32.390°S, 116.075°E
- Last updated
- October 24, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 24 Oct 2026 | 75.2% | 1.97 |
| 23 Oct 2026 | 72.3% | 1.89 |
| 22 Oct 2026 | 69.9% | 1.83 |
| 21 Oct 2026 | 68.5% | 1.8 |
| 20 Oct 2026 | 68.6% | 1.8 |
| 19 Oct 2026 | 69.7% | 1.83 |
| 18 Oct 2026 | 70.6% | 1.85 |
| 17 Oct 2026 | 71.1% | 1.86 |
| 16 Oct 2026 | 71.3% | 1.87 |
| 15 Oct 2026 | 71.0% | 1.86 |
| 14 Oct 2026 | 71.8% | 1.88 |
| 13 Oct 2026 | 74.5% | 1.95 |