Reservoir · Queensland · Australia · BOM Water Data Online
Somerset
79.4% full
Capacity
379.849 hm³
Volume stored
302 hm³
River
Stanley River
Year completed
1959
Coordinates
27.099°S, 152.580°E
Last updated
2026-10-28
Current fill
79.4%vs 7 days ago
+0.3 ppgaining
vs 1 year ago
+0.8 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
101%of normal
79.4% full on 2026-10-28, against an average of 78.9% for October across 4 years of readings (+0.5 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Somerset had rain close to normal for the season. Rainfall compared with the long-run record for the same season at this point (Copernicus Global Drought Observatory, SPI-3 index −0.19). 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: 2026-10-28.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 27.099°S, 152.580°E · Open in Google Maps
About Somerset
As of October 28, 2026, Somerset is filled to 79.4% of its total capacity, holding 301.768 hm³ of water out of a maximum 379.849 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 (+0.3 pp), and it sits close to where it was a year earlier.
Across the readings we hold for Somerset — 938 data points between October 28, 2023 and October 28, 2026 — the level has ranged from a low of 75.0% (December 15, 2023) to a high of 83.5% (April 25, 2025). On average the reservoir is fullest around May and at its lowest around February.
The dam at Somerset was completed in 1959. It is operated by Seqwater primarily for water supply. It lies within the Stanley River Basin basin at 27.099°S, 152.580°E.
Key facts
- Current fill level
- 79.4% of total capacity
- Water stored
- 301.768 hm³
- Total capacity
- 379.849 hm³
- 7-day change
- ▲ 0.3 pp
- Year-on-year
- ▲ 0.8 pp
- Primary use
- Water supply
- River
- Stanley River
- River basin
- Stanley River Basin
- Year completed
- 1959
- Operator
- Seqwater
- Coordinates
- 27.099°S, 152.580°E
- Last updated
- October 28, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 28 Oct 2026 | 79.4% | 301.768 |
| 26 Oct 2026 | 81.3% | 308.65 |
| 25 Oct 2026 | 81.2% | 308.45 |
| 24 Oct 2026 | 80.7% | 306.59 |
| 23 Oct 2026 | 80.0% | 303.96 |
| 22 Oct 2026 | 79.3% | 301.41 |
| 21 Oct 2026 | 79.1% | 300.33 |
| 20 Oct 2026 | 78.9% | 299.75 |
| 19 Oct 2026 | 78.8% | 299.26 |
| 18 Oct 2026 | 78.7% | 298.82 |
| 17 Oct 2026 | 78.6% | 298.74 |
| 16 Oct 2026 | 78.6% | 298.7 |