The “Amunas” of the Carhuayumac micro-basin, water sowing practices of San Pedro de Casta in Huarochiri, Lima. Peru.

• Culture, The amunas stand as a testament to an ancient hydrological technique for engineered aquifer replenishment, originating in Peru's elevated Huarochirí mountain range, encompassing the Lurín and Rímac river basins. Likely devised by the Inca civilization during the 14th century, while the precise origins remain elusive, their enduring functionality underscores their historical significance. Education, San Pedro de Casta Rural Community accumulated experience rehabilitating 8 amunas through its active participation in AQUAFONDO water sowing and harvesting projects. It allowed this community to obtain the title of “Community Learning Center”, being a reference for other communities to participate in similar initiatives. Law, The legal framework that has enabled the work developing amunas as a ecohydrological method to do watershed management, on general terms, includes the following: • Law N° 29338, Water Resources Law • Law N° 30754, Framework Law on Climate Change • Law N° 30215, Mechanisms of Remuneration for Ecosystem Services • Law N° 27972, Organic Law on Municipalities • Law N° 24656, General Law on Peasant Communities • San Pedro de Casta Community Statute Policy,The policies that accompany the work developing amunas as a ecohydrological method to do watershed management, on general terms, includes the following: • Local Concerted Development Plan • Local Climate Change Adaptation Plan 2017-2021 • Water Resources National Plan • Water Resources Management Plan in the Basin • Regional Climate Change Strategy for Lima Region