Rivers are the most visible form of fresh water. Rivers are ancient and older than civilizations—a `mini cosmos` spawning history, tales, spirituality, and technological incursions. Flowing rivers are the largest renewable water resource as well as a crucible for both humans and aquatic ecosystems. Rivers also have a habit of moving on and on from their source from where they gush with gay abandon to their mouth where they quietly disappear into the surroundings. That journey is now being interrupted. Since the age of industrialization, humans have increasingly exerted a pervasive influence on water resources. Rivers in particular have drawn humans to monumental engineering interventions such as dams and barrages often as chest-thumping dominance and seldom as an enduring bond between man and nature.