Pre-Hispanic dams
They consist of dams made of stone and clay, which were built by the ancient Peruvians (pre-Incas) with the purpose of storing water to regulate the streams and, at the same time, allow infiltration to recharge the aquifers and thus have water in the springs and wetlands.
They consist of stone and clay dams, which were built by the ancient Peruvians (pre-Incas) with the purpose of storing water to regulate the streams and, at the same time, allow infiltration to recharge the aquifers and thus have water in the springs and wetlands. Currently, some of them have received maintenance thanks to the support of some cooperation projects. In general, the dams were built in a basin or collecting basin, with a natural hollow and an outlet or throat dammed with stones, clay and mud, to create artificial lagoons. Likewise, some old dams were improved with sedimentation or sand traps, regulated outlet valves and purges. In other cases, the dams were rebuilt with reinforced or cyclopean concrete. What is surprising about this technology, in addition to the management of the territory in terms of collection and storage, is the durability that the dams and dams have had.
Water production and storage
Main theme:
Andean
Region:
1,000 - 1,200
Precipitation (mm):
Low
Application difficulty:
2, 6, 12 and 13
SDGs impacted:
Gravity
Energy used:
70 - 90
Efficiency (%):
Rural
Sector:
Use of rainwater to recharge aquifers.
Expected environmental impact:
$25,000 - $30,000/km²
Estimated value:
1- http://repositorio.iica.int/bitstream/handle/11324/7220/BVE18040308e.pdf?sequence=1&isAllowed=y 2- A study rehabilitates a pre-Hispanic dam to preserve its heritage and supply water | iAgua 3-https://www.conicet.gov.ar/inauguran-represa-prehispanica-rehabilitada-para-su-uso-en-el-presente-andino/ 4- https://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-73562020000400541
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