Flood potential in Puyan Township, Changhua County
Puyan Township covers 39.2 km². Under 24 h / 350 mm, 1.0 km² (2.6%) is simulated to flood above 0.3 m; under 24 h / 650 mm, 9.4 km² (24.1%). The table gives all ten scenarios and five depth classes.
Among the 26 townships of Changhua County, the 24 h / 350 mm simulated share ranks 20 (county average 3.7%) and the 24 h / 650 mm share ranks 9 (average 18.8%). Nationally, 148 and 64 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 | 0.1 | 0.0 | 0.0 | 0.0 | 0.2 | 0.6% |
| 6 h / 250 mm | 0.5 | 0.2 | 0.1 | 0.0 | 0.0 | 0.8 | 2.0% |
| 6 h / 350 mm | 1.2 | 0.4 | 0.1 | 0.1 | 0.0 | 1.8 | 4.6% |
| 12 h / 200 mm | 0.3 | 0.1 | 0.0 | 0.0 | 0.0 | 0.4 | 1.0% |
| 12 h / 300 mm | 1.5 | 0.4 | 0.1 | 0.0 | 0.0 | 2.0 | 5.2% |
| 12 h / 400 mm | 2.5 | 0.8 | 0.1 | 0.0 | 0.0 | 3.5 | 8.8% |
| 24 h / 200 mm | 0.2 | 0.1 | 0.0 | 0.0 | 0.0 | 0.3 | 0.8% |
| 24 h / 350 mm | 0.8 | 0.2 | 0.1 | 0.0 | 0.0 | 1.0 | 2.6% |
| 24 h / 500 mm | 3.5 | 1.3 | 0.1 | 0.1 | 0.0 | 5.0 | 12.7% |
| 24 h / 650 mm | 5.4 | 3.6 | 0.3 | 0.1 | 0.1 | 9.4 | 24.1% |
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 Puyan Township — the same township in the road accident heatmap: casualty accidents by hour, cause and vehicle type.
Other townships in Changhua County
Puxin Township Shetou Township Tianzhong Township Yongjing Township Hemei Township Xihu Township Tianwei Township Shengang Township Xiushui Township Lukang Township Dacun Township Yuanlin City Fuxing Township Changhua City Huatan Township Xianxi Township Beidou Township Pitou Township Fangyuan Township Erlin Township Zhutang Township Dacheng Township Ershui Township Xizhou Township Fenyuan Township