Rural water supply:
use and demand in semiarid communities and water availability of alluviums
Keywords:
water demand; water supply for rural communities; alluviumAbstract
Offering water in quantity and quality needed in the Brazilian semiarid is a challenge far from being overcome, especially when it comes to diffuse rural communities. Knowing uses, demands and sources of water is vital for better management in a scenario of water scarcity. The alluviums are a considerable alternative in the perspective of better coexistence with this reality. For the stretch on the Upper Capibaribe River, the most relevant usage characteristics, demands and types of water sources in rural communities in the semiarid were identified. The water availability of the alluvium in the area was also evaluated. The granulometry, the parameters of hydraulic conductivity and porosity and the estimation of the exploitable resources were obtained. The population uses water from different sources in a combined way. Water from cisterns is used almost exclusively for the most noble domestic activities, while the water stored in the alluvium is used primarily for the less noble and for family farming and animal husbandry. In general, the limitation of access to water determines which productive activities can be carried out. The sediments that make up the alluvium were classified as medium to coarse sands. The estimated potential for exploitable water volume of the alluviums has accredited them as the main source of supply for these communities.
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