Water balance of La Yesca municipality, Nayarit, Mexico

Abstract

The purpose of this study was to calculate the water balance components in La Yesca municipality, Nayarit, Mexico. Methodology was used to obtain the water balance components in surface river basins, where the choice and application of algorithms to determine the volumes of water that do not have gauging depend on the type of statistical and geographical information available. The results of the estimates of water balance components in La Yesca municipality show that a water volume of about 114. 856 m3 s-1 is precipitated, from it the 88 % (101.141 m3 s-1) evapotranspires, a lower portion recharges the underlying aquifers (3.019 m3 s-1) and the rest runs off at about 10,696 m3 s-1; from these runoffs, approximately 0.026 m3 s-1 is used mainly for public use. Therefore we can say that the most important source of water supply of La Yesca municipality is formed by the flows of superficial water exploitation. In addition, there is an order import of 118.099 m3 s-1 coming from the Santiago and Bolaños Rivers. The annual extraction of groundwater belongs to order 0.004 m3 s-1. In the basin, 0.030 m3 s-1 of water are used, from which 0.026 m3 s-1 correspond to volumes of public use; the rest (0.004 m3 s-1) are used in agriculture and aquaculture.