Sun Moon Lake
Central · 濁水溪(武界壩越域引水至水社水尾溪) Basin
Capacity
171.62 hm³
Coordinates
23.867°N, 120.917°E
Operator
Water Resources Agency (WRA)
97.8% full
Current fill
97.8%vs 7 days ago
0.0%stable
vs 1 year ago
N/A7-day trend
→stable
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 171.62 hm³ |
| Usable capacity | 128.46 hm³ |
| Dam height | 30.3 m |
| Dam type | embankment |
| Primary use | Multi-purpose |
| Operator | Water Resources Agency (WRA) |
| River | 濁水溪(武界壩越域引水至水社水尾溪) |
| Autonomous community | Central |
| River basin | 濁水溪(武界壩越域引水至水社水尾溪) Basin |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 23.867, 120.917 · Open in Google Maps
About Sun Moon Lake
As of October 1, 2026, Sun Moon Lake is filled to 97.8% of its total capacity, holding roughly 126 hm³ of water out of a maximum 172 hm³. At this level the reservoir is high. Of that total, about 128 hm³ is usable (live) storage.
Over the most recent week on record the fill level has held broadly steady (+0.0 pts).
Across the readings we hold for Sun Moon Lake — 1 data points between October 1, 2026 and October 1, 2026 — the level has ranged from a low of 97.8% (October 1, 2026) to a high of 97.8% (October 1, 2026).
The dam at Sun Moon Lake stands 30.3 m tall and is a embankment dam. It is operated by Water Resources Agency (WRA) primarily for multiple purposes. It lies within the 濁水溪(武界壩越域引水至水社水尾溪) Basin basin at 23.867°N, 120.917°E.
Key facts
- Current fill level
- 97.8%
- Water stored
- 126 hm³
- Total capacity
- 172 hm³
- Usable capacity
- 128 hm³
- 7-day change
- No change
- Primary use
- Multipurpose
- River
- 濁水溪(武界壩越域引水至水社水尾溪)
- River basin
- 濁水溪(武界壩越域引水至水社水尾溪) Basin
- Dam height
- 30.3 m
- Operator
- Water Resources Agency (WRA)
- Coordinates
- 23.867°N, 120.917°E
- Last updated
- October 1, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 1 Oct 2026 | 97.8% | 126 |