The current of the El Quelite River recorded a catchment of 835 square kilometers, where it drained annually for an average of 107 million cubic meters with variations ranging from 78 to 163 million cubic meters. This hydrological current passing through the town of Mazatlán touches the towns of El Castillo, Las Juntas, Amapa, Los Naranjos, Milkweed, Modesto Station, and El Recreo. After traveling a distance of 100 kilometers from its source, it discharges into the Pacific Ocean. The El Zapote and Los Cocos streams drain in a southeasterly direction to end at the Presidio River, up to the villages from which they take their names.