Reservoir · South Australia · Australia · BOM Water Data Online
Happy Valley
80.8% full
Capacity
12.6 hm³
Volume stored
10 hm³
River
Off-stream
Year completed
1897
Coordinates
35.072°S, 138.572°E
Last updated
2026-10-24
Current fill
80.8%vs 7 days ago
-0.5 pplosing
vs 1 year ago
-2.7 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
95%of normal
80.8% full on 2026-10-24, against an average of 85.4% for October across 4 years of readings (-4.6 points).
Rain over the last three months · 11 October 2026
Near normal
In the three months to 11 October 2026 the area around Happy Valley 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 −0.16). 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: 2026-10-24.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 35.072°S, 138.572°E · Open in Google Maps
About Happy Valley
As of October 24, 2026, Happy Valley is filled to 80.8% of its total capacity, holding 10.18 hm³ of water out of a maximum 12.6 hm³. At this level the reservoir is high. Of that total, 9.3 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (-0.5 pp), and it is 2.7 points below its level on the same date a year earlier.
Across the readings we hold for Happy Valley — 1091 data points between October 28, 2023 and October 24, 2026 — the level has ranged from a low of 77.6% (November 16, 2024) to a high of 98.5% (October 20, 2024). On average the reservoir is fullest around October and at its lowest around November.
The dam at Happy Valley was completed in 1897. It is operated by BOM primarily for water supply. It lies within the Off-stream Basin basin at 35.072°S, 138.572°E.
Key facts
- Current fill level
- 80.8% of total capacity
- Water stored
- 10.18 hm³
- Total capacity
- 12.6 hm³
- Usable capacity
- 9.3 hm³
- 7-day change
- ▼ 0.5 pp
- Year-on-year
- ▼ 2.7 pp
- Primary use
- Water supply
- River
- Off-stream
- River basin
- Off-stream Basin
- Year completed
- 1897
- Operator
- BOM
- Coordinates
- 35.072°S, 138.572°E
- Last updated
- October 24, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 24 Oct 2026 | 80.8% | 10.18 |
| 23 Oct 2026 | 80.3% | 10.12 |
| 22 Oct 2026 | 80.2% | 10.11 |
| 21 Oct 2026 | 80.3% | 10.12 |
| 20 Oct 2026 | 80.5% | 10.14 |
| 19 Oct 2026 | 80.6% | 10.16 |
| 18 Oct 2026 | 80.9% | 10.19 |
| 17 Oct 2026 | 81.3% | 10.24 |
| 16 Oct 2026 | 81.7% | 10.29 |
| 15 Oct 2026 | 82.1% | 10.34 |
| 14 Oct 2026 | 82.4% | 10.38 |
| 13 Oct 2026 | 82.3% | 10.37 |