<P> The Incan aqueducts refer to any of a series of aqueducts built by the Inca people . The Inca built such structures to increase arable land and provide drinking water and baths to the population . Due to water scarcity in the Andean region, advanced water management allowed the Inca to thrive and expand along much of the Pacific coast of South America . Such structures, some of which survive today, show the advanced hydraulic and civil engineering capabilities of the Inca . </P> <P> The water came mostly from nearby rivers, but was also brought down from fresh water springs on mountains . The ancients discovered that if they diverted certain amounts of water from rivers, then they didn't have to worry about scarce rain and drought and they could also stimulate plants to grow faster by getting enough water in time . Workers dug tunnels through mountains and cut channels into cliffs to complete the project . </P> <P> In seasons when too much mountain snow melted, the flood waters were carried to huge masonry reservoirs for storage, channeling water to their cities and religious centers . </P>

Where did the incas get their water from