Considering the finite volume of freshwater resources, its sustainable management is a global challenge. Due to various factors ranging from natural disturbance in hydrological regime to poor governance, about 33% of global population currently live in water stress conditions and this number will go up to 67% by 2050 if no adaptation and mitigation measures are timely considered (Vörösmarty et al., 2010). On the other hand, rapid population increase, economic growth, and urbanization are putting further stress on fresh water availability (Kumar et al., 2018). Variability of climatic conditions in the tropical Indian and Pacific Oceans are also dominated by the Indian Ocean Dipole (IOD) and El Nino Southern Oscillations (ENSO). They both have huge impact on Asian region through inducing hydro-meteorological hazards and its induced health impacts (from water borne diseases like cholera). Since last three decades, approximately 3.2 million people killed in countries like India, Bangladesh and Vietnam only because of ENSO and IOD induced hazards (Masahiro et al., 2010; Tamaddun et al., 2019). With increasing nature and anthropogenic interferences and management efforts, hydrology of different landscapes around the world has significantly changed, and which has significant impact on both water resources and socio-cultural attributes deeply associated with water (Blair and Buytaert, 2016).