Shimen Reservoir
North · 淡水河支流大漢溪 Basin
Capacity
309.12 hm³
Coordinates
24.814°N, 121.284°E
Operator
Water Resources Agency (WRA)
Current fill
97.5%vs 7 days ago
+6.3%gaining
vs 1 year ago
+1.3%year-over-year
7-day trend
↑rising
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 309.12 hm³ |
| Usable capacity | 203.51 hm³ |
| Dam height | 133.1 m |
| Dam type | embankment |
| Primary use | Multi-purpose |
| Operator | Water Resources Agency (WRA) |
| River | 淡水河支流大漢溪 |
| Autonomous community | North |
| River basin | 淡水河支流大漢溪 Basin |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 24.814, 121.284 · Open in Google Maps
About Shimen Reservoir
As of July 3, 2026, Shimen Reservoir is filled to 97.5% of its total capacity, holding roughly 199 hm³ of water out of a maximum 309 hm³. At this level the reservoir is high. Of that total, about 204 hm³ is usable (live) storage.
Over the most recent week on record the fill level has risen by 6.3 percentage points, and it is 1.3 points above its level on the same date a year earlier.
Across the readings we hold for Shimen Reservoir — 1127 data points between January 22, 2003 and July 3, 2026 — the level has ranged from a low of 9.7% (May 22, 2021) to a high of 115.2% (December 15, 2004). On average the reservoir is fullest around October and at its lowest around April.
The dam at Shimen Reservoir stands 133.1 m tall and is a embankment dam. It is operated by Water Resources Agency (WRA) primarily for multiple purposes. It lies within the 淡水河支流大漢溪 Basin basin at 24.814°N, 121.284°E.
Key facts
- Current fill level
- 97.5%
- Water stored
- 199 hm³
- Total capacity
- 309 hm³
- Usable capacity
- 204 hm³
- 7-day change
- ▲ 6.3 pts
- Year-on-year
- ▲ 1.3 pts
- Primary use
- Multipurpose
- River
- 淡水河支流大漢溪
- River basin
- 淡水河支流大漢溪 Basin
- Dam height
- 133.1 m
- Operator
- Water Resources Agency (WRA)
- Coordinates
- 24.814°N, 121.284°E
- Last updated
- July 3, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 3 Jul 2026 | 97.5% | 199 |
| 15 Jun 2026 | 91.2% | 186 |
| 8 Jun 2026 | 68.3% | 139 |
| 1 Jun 2026 | 63.5% | 129 |
| 22 May 2026 | 71.2% | 145 |
| 15 May 2026 | 73.5% | 150 |
| 8 May 2026 | 72.5% | 148 |
| 1 May 2026 | 68.3% | 139 |
| 22 Apr 2026 | 69.0% | 140 |
| 15 Apr 2026 | 71.3% | 145 |
| 8 Apr 2026 | 69.3% | 141 |
| 1 Apr 2026 | 51.4% | 105 |
Frequently asked questions
What is the current water level of Shimen Reservoir?
As of July 3, 2026, Shimen Reservoir is at 97.5% of its capacity, holding approximately 199 hm³ of water, according to WRA data.
Is Shimen Reservoir reservoir full?
Shimen Reservoir is essentially full, sitting at 97.5% of capacity as of July 3, 2026.
Is the water level at Shimen Reservoir rising or falling?
The level at Shimen Reservoir is rising — it gained 6.3 percentage points over the latest week on record.
How much water can Shimen Reservoir hold?
Shimen Reservoir has a total capacity of 309 hm³, of which about 204 hm³ is usable storage.
Where is Shimen Reservoir reservoir located?
Shimen Reservoir is located in North, Taiwan, within the 淡水河支流大漢溪 Basin basin (coordinates 24.814°N, 121.284°E).
What is Shimen Reservoir used for?
Shimen Reservoir is used primarily for multiple purposes, and is managed by Water Resources Agency (WRA).