Techi Reservoir
Central · 大甲溪、大甲溪支流志樂溪 Basin
Capacity
232 hm³
Coordinates
24.235°N, 121.077°E
Operator
Water Resources Agency (WRA)
Current fill
90.1%vs 7 days ago
-1.8%losing
vs 1 year ago
-4.1%year-over-year
7-day trend
↓falling
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Technical specifications
| Total capacity | 232 hm³ |
| Usable capacity | 184.33 hm³ |
| Dam height | 181 m |
| Dam type | arch |
| Year built | 1974 |
| Primary use | Multi-purpose |
| Operator | Water Resources Agency (WRA) |
| River | 大甲溪、大甲溪支流志樂溪 |
| Autonomous community | Central |
| River basin | 大甲溪、大甲溪支流志樂溪 Basin |
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 24.235, 121.077 · Open in Google Maps
About Techi Reservoir
As of July 3, 2026, Techi Reservoir is filled to 90.1% of its total capacity, holding roughly 166 hm³ of water out of a maximum 232 hm³. At this level the reservoir is high. Of that total, about 184 hm³ is usable (live) storage.
Over the most recent week on record the fill level has fallen by 1.8 percentage points, and it is 4.1 points below its level on the same date a year earlier.
Across the readings we hold for Techi Reservoir — 1128 data points between January 1, 2003 and July 3, 2026 — the level has ranged from a low of 1.3% (May 22, 2021) to a high of 112.9% (September 22, 2008). On average the reservoir is fullest around October and at its lowest around May.
The dam at Techi Reservoir stands 181 m tall and is a arch dam and was completed in 1974. It is operated by Water Resources Agency (WRA) primarily for multiple purposes. It lies within the 大甲溪、大甲溪支流志樂溪 Basin basin at 24.235°N, 121.077°E.
Key facts
- Current fill level
- 90.1%
- Water stored
- 166 hm³
- Total capacity
- 232 hm³
- Usable capacity
- 184 hm³
- 7-day change
- ▼ 1.8 pts
- Year-on-year
- ▼ 4.1 pts
- Primary use
- Multipurpose
- River
- 大甲溪、大甲溪支流志樂溪
- River basin
- 大甲溪、大甲溪支流志樂溪 Basin
- Dam height
- 181 m
- Year completed
- 1974
- Operator
- Water Resources Agency (WRA)
- Coordinates
- 24.235°N, 121.077°E
- Last updated
- July 3, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 3 Jul 2026 | 90.1% | 166 |
| 15 Jun 2026 | 91.9% | 169 |
| 8 Jun 2026 | 85.6% | 158 |
| 1 Jun 2026 | 91.7% | 169 |
| 22 May 2026 | 91.4% | 168 |
| 15 May 2026 | 88.5% | 163 |
| 8 May 2026 | 83.5% | 154 |
| 1 May 2026 | 74.0% | 136 |
| 22 Apr 2026 | 71.9% | 133 |
| 15 Apr 2026 | 72.4% | 133 |
| 8 Apr 2026 | 66.4% | 122 |
| 1 Apr 2026 | 55.9% | 103 |
Frequently asked questions
What is the current water level of Techi Reservoir?
As of July 3, 2026, Techi Reservoir is at 90.1% of its capacity, holding approximately 166 hm³ of water, according to WRA data.
Is Techi Reservoir reservoir full?
No. As of July 3, 2026, Techi Reservoir is high at 90.1% of its capacity, so it is not full.
Is the water level at Techi Reservoir rising or falling?
The level at Techi Reservoir is falling — it dropped 1.8 percentage points over the latest week on record.
How much water can Techi Reservoir hold?
Techi Reservoir has a total capacity of 232 hm³, of which about 184 hm³ is usable storage.
Where is Techi Reservoir reservoir located?
Techi Reservoir is located in Central, Taiwan, within the 大甲溪、大甲溪支流志樂溪 Basin basin (coordinates 24.235°N, 121.077°E).
When was Techi Reservoir dam built?
The dam at Techi Reservoir was completed in 1974.
What is Techi Reservoir used for?
Techi Reservoir is used primarily for multiple purposes, and is managed by Water Resources Agency (WRA).