Abstract:
Flooding has been a natural disaster in Indonesia and elsewhere. This research is designed to create scenarios and designs conservation to mitigate flooding disaster. Data potential, vulnerability, and duplicated river covering 0.25% of the targeted flooding area were collected and analysed. Five design of conservation, the natural river as control, river normalization, normalization with stone gabion, river straightening, and straightening with gabion stone, and main targeted responses of these five scenarios are river current velocity. Effectiveness scenarios were analysed using Anova and Tukey test. The results showed that straightening with gabion stone was the most effective scenario for flooding mitigation since this was the most effective in increasing river current velocity. This could prevent landslide, accelerate current, overcome flooding, and prevent flooding. Other scenarios such as, normalization stone gabion, deadlock alley ditch, canalization, and riparian reclamation are possible implemented
