Reservoir · Western Australia · Australia · BOM Water Data Online
Samson Brook
57.9% full
Capacity
8 hm³
Volume stored
5 hm³
River
Samson Brook
Year completed
1941
Coordinates
32.877°S, 116.027°E
Last updated
2026-09-06
Current fill
57.9%vs 7 days ago
+1.4%gaining
vs 1 year ago
-12.4%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. -32.877, 116.027 · Open in Google Maps
About Samson Brook
As of September 6, 2026, Samson Brook is filled to 57.9% of its total capacity, holding roughly 5 hm³ of water out of a maximum 8 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 (+1.4 pts), and it is 12.4 points below its level on the same date a year earlier.
Across the readings we hold for Samson Brook — 1052 data points between September 11, 2023 and September 6, 2026 — the level has ranged from a low of 30.5% (May 24, 2024) to a high of 90.8% (October 6, 2024). On average the reservoir is fullest around September and at its lowest around May.
The dam at Samson Brook was completed in 1941. It is operated by BOM primarily for water supply. It lies within the Samson Brook Basin basin at 32.877°S, 116.027°E.
Key facts
- Current fill level
- 57.9%
- Water stored
- 5 hm³
- Total capacity
- 8 hm³
- 7-day change
- ▲ 1.4 pts
- Year-on-year
- ▼ 12.4 pts
- Primary use
- Water supply
- River
- Samson Brook
- River basin
- Samson Brook Basin
- Year completed
- 1941
- Operator
- BOM
- Coordinates
- 32.877°S, 116.027°E
- Last updated
- September 6, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 6 Sep 2026 | 57.9% | 5 |
| 5 Sep 2026 | 57.7% | 5 |
| 4 Sep 2026 | 57.6% | 5 |
| 3 Sep 2026 | 57.5% | 5 |
| 2 Sep 2026 | 57.4% | 5 |
| 1 Sep 2026 | 57.2% | 5 |
| 31 Aug 2026 | 57.0% | 5 |
| 30 Aug 2026 | 56.5% | 5 |
| 29 Aug 2026 | 56.1% | 4 |
| 28 Aug 2026 | 55.5% | 4 |
| 27 Aug 2026 | 54.6% | 4 |
| 26 Aug 2026 | 53.8% | 4 |