Reservoir · Western Australia · Australia · BOM Water Data Online
Harding
74.6% full
Capacity
63.8 hm³
Volume stored
48 hm³
River
Harding River
Year completed
1985
Coordinates
21.012°S, 117.116°E
Last updated
2026-10-25
Current fill
74.6%vs 7 days ago
-1.4 pplosing
vs 1 year ago
+54.7 ppyear-over-year
7-day trend
↓falling
Drought context
Storage vs October average
193%of normal
74.6% full on 2026-10-25, against an average of 38.7% for October across 4 years of readings (+35.9 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Harding 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 −0.50). 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: 2026-10-25.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 21.012°S, 117.116°E · Open in Google Maps
About Harding
As of October 25, 2026, Harding is filled to 74.6% of its total capacity, holding 47.59 hm³ of water out of a maximum 63.8 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has fallen by 1.4 percentage points, and it is 54.7 points above its level on the same date a year earlier.
Across the readings we hold for Harding — 1094 data points between October 28, 2023 and October 25, 2026 — the level has ranged from a low of 15.8% (February 4, 2026) to a high of 105.6% (March 31, 2026). On average the reservoir is fullest around April and at its lowest around January.
The dam at Harding was completed in 1985. It is operated by BOM primarily for water supply. It lies within the Harding River Basin basin at 21.012°S, 117.116°E.
Key facts
- Current fill level
- 74.6% of total capacity
- Water stored
- 47.59 hm³
- Total capacity
- 63.8 hm³
- 7-day change
- ▼ 1.4 pp
- Year-on-year
- ▲ 54.7 pp
- Primary use
- Water supply
- River
- Harding River
- River basin
- Harding River Basin
- Year completed
- 1985
- Operator
- BOM
- Coordinates
- 21.012°S, 117.116°E
- Last updated
- October 25, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 25 Oct 2026 | 74.6% | 47.59 |
| 24 Oct 2026 | 74.8% | 47.73 |
| 23 Oct 2026 | 75.0% | 47.87 |
| 22 Oct 2026 | 75.2% | 48 |
| 21 Oct 2026 | 75.5% | 48.14 |
| 20 Oct 2026 | 75.6% | 48.25 |
| 19 Oct 2026 | 75.8% | 48.36 |
| 18 Oct 2026 | 76.0% | 48.47 |
| 17 Oct 2026 | 76.1% | 48.58 |
| 16 Oct 2026 | 76.3% | 48.68 |
| 15 Oct 2026 | 76.4% | 48.73 |
| 14 Oct 2026 | 76.4% | 48.76 |