近 26 日資料
| 資料日期 | 蓄水率(%) | 有效蓄水量(萬立方公尺) |
|---|---|---|
| 2026-10-30 | 88.4 | 35.02 |
| 2026-10-29 | 91.5 | 36.25 |
| 2026-10-28 | 93.4 | 36.99 |
| 2026-10-27 | 94.3 | 37.33 |
| 2026-10-26 | 94.9 | 37.58 |
| 2026-10-24 | 95.3 | 37.75 |
| 2026-10-22 | 65.4 | 25.89 |
| 2026-10-21 | 64.3 | 25.45 |
| 2026-10-20 | 64.4 | 25.52 |
| 2026-10-19 | 82.6 | 32.69 |
| 2026-10-18 | 85.8 | 33.97 |
| 2026-10-16 | 85.8 | 33.97 |
| 2026-10-15 | 85.8 | 33.97 |
| 2026-10-14 | 85.8 | 33.97 |
| 2026-10-13 | 85.8 | 33.97 |
| 2026-10-12 | 85.8 | 33.97 |
| 2026-10-09 | 94.1 | 37.25 |
| 2026-10-08 | 94.7 | 37.50 |
| 2026-10-07 | 95.1 | 37.67 |
| 2026-10-06 | 95.3 | 37.75 |
| 2026-10-05 | 77 | 30.48 |
| 2026-10-04 | 77.4 | 30.64 |
| 2026-10-02 | 75.4 | 29.86 |
| 2026-10-01 | 75.8 | 30.01 |
| 2026-09-30 | 75.8 | 30.01 |
| 2026-09-29 | 78.1 | 30.91 |
來源:水利署「水庫水情資料」與「水庫每日營運狀況」 ↗。本頁每日取西勢水庫當日最新一筆逐時觀測的有效蓄水量,除以每日營運狀況檔的有效容量(39.60 萬立方公尺)算出蓄水率;當日全台可對照水庫不足 50 座的日期整日不採用,蓄水率超過 105% 的異常值排除。