Traditional and Effective Water Management Ideas around the Earth; Post 1

Pre-Incan technology for water management in Peru 

As a result of climate change, Peru's water shortages is worsening. Peru is one of the most water-scarce countries on the planet. Lima, the country's capital and home to a third of the population, sprawls across a flat desert plain with only 13mm (0.5 inches) of annual rainfall.

Conventional water control mechanisms are progressively collapsing as a result of global climate change. Human interventions tend to contain and hurry up water, obliterating natural moments when water stalls on land. Nature-based solutions, on the other hand, allow for these slower phases by providing space and time. The inhabitants of Huamantanga are comuneros, members of an agricultural cooperative.

They divert wet-season flows from mountain streams and guide them to natural infiltration basins via water canals known as amunas (a Quechua word meaning "to hold"). The Huari (WAR-i), an ancient people who originated the tactic, still use it here and in a few other Andean settlements. Because subsurface water travels more slowly through gravel and dirt, it emerges downslope from springs months later, when comuneros gather it to water their crops. Repairing abandoned amunas spread throughout the highlands might extend water into the dry season for city people as well, because much of their irrigation soaks into the earth and eventually makes its way back to the rivers that supply Lima.