Case Study 3: Managed Aquifer Recharge to recycle water for agricultural use in San Luis Río Colorado, Sonora, Mexico.

摘要: San Luis Río Colorado (SLRC) city is located in the Sonoran desert bordering the Colorado River (CR) delta with a very low annual mean precipitation of 55 mm. The water scarcity in this region is further exacerbated by economic growth of the Mexican border cities and intensive farming. There are two main sources of water for supply: groundwater of the SLRC aquifer and surface water delivered from the USA according to an International agreement between Mexico and USA to share water from transboundary basins. Currently 77% of water use is for agriculture. The water demand by the SLRC city is 31.5 Mm3/year (1 Mm3= 1X106 m3), yet both of its sources are at risk. The SLRC aquifer is overexploited and is depeted at a rate of 7.58 Mm3 anually (DOF, 2015 [1]). A prolonged drought of the CR basin has diminished surface water supply. Recently, Mexico has accorded