Reservoir · New South Wales · Australia · BOM Water Data Online
Split Rock
87.6% full
Capacity
397.4 hm³
Volume stored
348 hm³
Coordinates
30.539°S, 150.676°E
Last updated
2026-09-09
Current fill
87.6%vs 7 days ago
-1.5%losing
vs 1 year ago
-12.7%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: 2026-09-09.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. -30.539, 150.676 · Open in Google Maps
About Split Rock
As of September 9, 2026, Split Rock is filled to 87.6% of its total capacity, holding roughly 348 hm³ of water out of a maximum 397 hm³. At this level the reservoir is high. Of that total, about 394 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (-1.5 pts), and it is 12.7 points below its level on the same date a year earlier.
Across the readings we hold for Split Rock — 1095 data points between September 11, 2023 and September 9, 2026 — the level has ranged from a low of 69.4% (March 19, 2025) to a high of 101.0% (August 24, 2025). On average the reservoir is fullest around October and at its lowest around March.
It is operated by BOM primarily for water supply.
Key facts
- Current fill level
- 87.6%
- Water stored
- 348 hm³
- Total capacity
- 397 hm³
- Usable capacity
- 394 hm³
- 7-day change
- ▼ 1.5 pts
- Year-on-year
- ▼ 12.7 pts
- Primary use
- Water supply
- Operator
- BOM
- Coordinates
- 30.539°S, 150.676°E
- Last updated
- September 9, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 9 Sep 2026 | 87.6% | 348 |
| 8 Sep 2026 | 87.6% | 348 |
| 7 Sep 2026 | 87.7% | 348 |
| 6 Sep 2026 | 87.8% | 349 |
| 5 Sep 2026 | 88.0% | 350 |
| 4 Sep 2026 | 88.3% | 351 |
| 3 Sep 2026 | 88.8% | 353 |
| 2 Sep 2026 | 89.1% | 354 |
| 1 Sep 2026 | 89.4% | 355 |
| 31 Aug 2026 | 89.8% | 357 |
| 30 Aug 2026 | 90.3% | 359 |
| 29 Aug 2026 | 90.9% | 361 |