Reservoir · New South Wales · Australia · BOM Water Data Online
Grahamstown Lake
Current fill: N/A
Capacity
192.3 hm³
Volume stored
N/A
River
Nine Mile Creek & Seven Mile Creek
Year completed
1965
Coordinates
32.739°S, 151.812°E
Not currently reporting
The most recent reading for this reservoir is from 2025-12-17, more than 45 days ago, so the current fill is shown as N/A. The history below reflects that older reading.
Current fill
N/Avs 7 days ago
N/Avs 1 year ago
N/A7-day trend
N/ADrought context
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Grahamstown Lake 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 −0.42). 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).
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 32.739°S, 151.812°E · Open in Google Maps
About Grahamstown Lake
The dam at Grahamstown Lake was completed in 1965. It is operated by BOM primarily for water supply. It lies within the Nine Mile Creek & Seven Mile Creek Basin basin at 32.739°S, 151.812°E.
Key facts
- Total capacity
- 192.3 hm³
- Usable capacity
- 182.4 hm³
- Primary use
- Water supply
- River
- Nine Mile Creek & Seven Mile Creek
- River basin
- Nine Mile Creek & Seven Mile Creek Basin
- Year completed
- 1965
- Operator
- BOM
- Coordinates
- 32.739°S, 151.812°E
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 17 Dec 2025 | 68.4% | 131.57 |
| 20 Oct 2025 | 75.2% | 144.63 |
| 19 Oct 2025 | 75.3% | 144.89 |
| 18 Oct 2025 | 75.4% | 145.01 |
| 17 Oct 2025 | 75.4% | 145.06 |