Fig. 11
Abnormal graphic result a warning system (Z-axis) with the input parameter of steeper slopes (Y-axis) and water level (X-axis); b warning system (Z-axis) with the input parameter of rainfall intensity (Y-axis) and water speed (X-axis). It looks normal from the rainfall intensity side, but an uphill water slope results in abnormal data, because the rainfall intensity has the most influence in determining the potential for flooding, although here we can see the region of slow rainfall intensity but with sudden uphill water slope