“…They also have been seriously considered as alternative water supplies in high population density states, cities, district and towns during dry periods because of water shortage issues and supplies from main reservoir not being sufficient to meet water demands (Ali, Saadon, Abd Rahman, & Khalid, ; Xue, Yin, & Xie, ). The increasing concern is they are facing numerous threats attributable to rapid urbanization, subsequent increased human activities, significant changes in land‐use patterns, high population growth and, more recently, climate change impacts (Ding, Chen, Cheng, & Wang, ; Erol & Randhir, ; Liu, Long, Li, & Tu, ; Zessner et al., ; Zhu, Zhang, & Tong, ).…”