GENERALPHYSIOGRAPHYThe area is located between two outstanding units, flat areas of influence of streams located at elevations under 100 msnm, and the hills of small relief to locally abrupt, which do not exceed 200 msnm.The drainage system varies from dendrite to rectilinear and is the result of both the presence of the intrusive igneous and metamorphic rock and the structural features such as quartz vein and faults. Generally surface water flows all year decreasing considerably during summer.