Flood potential in Nantou City, Nantou County
Nantou City covers 72.2 km². Under 24 h / 350 mm, 1.8 km² (2.6%) is simulated to flood above 0.3 m; under 24 h / 650 mm, 5.2 km² (7.3%). The table gives all ten scenarios and five depth classes.
Among the 13 townships of Nantou County, the 24 h / 350 mm simulated share ranks 1 (county average 0.2%) and the 24 h / 650 mm share ranks 1 (average 0.5%). Nationally, 151 and 160 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 | 0.1 | 0.2 | 0.2 | 0.0 | 0.0 | 0.5 | 0.7% |
| 6 h / 250 mm | 0.5 | 0.5 | 0.3 | 0.4 | 0.2 | 1.8 | 2.5% |
| 6 h / 350 mm | 0.9 | 1.1 | 0.7 | 0.5 | 0.7 | 3.9 | 5.5% |
| 12 h / 200 mm | 0.2 | 0.2 | 0.2 | 0.1 | 0.0 | 0.8 | 1.0% |
| 12 h / 300 mm | 0.4 | 0.3 | 0.4 | 0.2 | 0.0 | 1.4 | 2.0% |
| 12 h / 400 mm | 0.8 | 1.0 | 0.8 | 0.3 | 0.6 | 3.4 | 4.8% |
| 24 h / 200 mm | 0.2 | 0.2 | 0.2 | 0.0 | 0.0 | 0.6 | 0.8% |
| 24 h / 350 mm | 0.5 | 0.5 | 0.3 | 0.4 | 0.1 | 1.8 | 2.6% |
| 24 h / 500 mm | 0.8 | 0.9 | 0.7 | 0.3 | 0.5 | 3.3 | 4.5% |
| 24 h / 650 mm | 1.0 | 1.6 | 1.0 | 0.6 | 1.0 | 5.2 | 7.3% |
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 Nantou City — the same township in the road accident heatmap: casualty accidents by hour, cause and vehicle type.
Other townships in Nantou County
Puli Township Caotun Township Mingjian Township Jiji Township Zhushan Township Yuchi Township Guoxing Township Shuili Township Ren'ai Township Lugu Township Zhongliao Township Xinyi Township