Flood potential in Annan District, Tainan City
Annan District covers 117.6 km². Under 24 h / 350 mm, 13.0 km² (11.1%) is simulated to flood above 0.3 m; under 24 h / 650 mm, 25.9 km² (22.0%). The table gives all ten scenarios and five depth classes.
Among the 37 townships of Tainan City, the 24 h / 350 mm simulated share ranks 5 (county average 4.8%) and the 24 h / 650 mm share ranks 12 (average 13.1%). Nationally, 43 and 73 of 368.
| Scenario | 0.3–0.5 m | 0.5–1 m | 1–2 m | 2–3 m | >3 m | Total flooded km² | Share |
|---|---|---|---|---|---|---|---|
| 6 h / 150 mm | 2.8 | 2.8 | 0.5 | 0.0 | 0.0 | 6.1 | 5.2% |
| 6 h / 250 mm | 3.1 | 6.0 | 0.8 | 0.1 | 0.0 | 10.1 | 8.6% |
| 6 h / 350 mm | 5.7 | 7.5 | 2.2 | 0.2 | 0.0 | 15.7 | 13.3% |
| 12 h / 200 mm | 2.2 | 3.8 | 1.5 | 0.0 | 0.0 | 7.5 | 6.4% |
| 12 h / 300 mm | 4.4 | 5.3 | 2.3 | 0.1 | 0.0 | 12.2 | 10.4% |
| 12 h / 400 mm | 6.2 | 7.9 | 3.3 | 0.2 | 0.0 | 17.5 | 14.9% |
| 24 h / 200 mm | 2.0 | 3.6 | 1.4 | 0.0 | 0.0 | 7.1 | 6.0% |
| 24 h / 350 mm | 3.8 | 6.3 | 2.8 | 0.1 | 0.0 | 13.0 | 11.1% |
| 24 h / 500 mm | 6.0 | 7.7 | 5.5 | 0.3 | 0.0 | 19.5 | 16.6% |
| 24 h / 650 mm | 7.2 | 10.7 | 7.7 | 0.3 | 0.0 | 25.9 | 22.0% |
Areas are sums of 40 × 40 m cells. Nationally the cell sums run 0.3–0.5% above the original polygon areas (measured per scenario); the error is larger for small townships. A scenario is a design rainfall: total over the duration, not per hour. The depth class is the maximum simulated depth in the cell.
Road accidents in Annan District — the same township in the road accident heatmap: casualty accidents by hour, cause and vehicle type.
Other townships in Tainan City
Xiaying District Yanshui District Xinshi District Madou District Rende District Xuejia District Houbi District Jiali District Anding District Jiangjun District Yongkang District Anping District South District West Central District Shanhua District Qigu District Xigang District Beimen District Guiren District Xinying District Shanshang District North District East District Liuying District Baihe District Dongshan District Guantian District Zuozhen District Guanmiao District Liujia District Xinhua District Yujing District Danei District Longqi District Nanhua District Nanxi District