To weight each criteria, works has been on AHP(http://www.123ahp.com/Default.aspx)
Weighted Criteria are shown below:
Our final multi criteria evaluation result comes out by using the tool “weighted sum” in Arcmap：
Blue part shows the higher possibility of storm water occurring while the red part represents less chance. Compared with results from direct calculating method, it is more subjective but at the same time, it mostly has same result with the other method.
