The Palo River is considered the principal water body that supplies the drinking water and hydroelectric power to different municipalities of the department of Cauca. This water body has also been a means of transport, space of recreation and sport as well as the livelihood for families, which dedicate to the fishery and the extraction of building materials including sand and ballast. Especially, the river Palo is the source of energy production of the micro power plant that provides the municipalities of Caloto, Padilla and Guachené and the source of the regional aqueduct of the north of Cauca that supplies the municipalities of Caloto, Villarrica and Puerto Tejada. It is also one of the main affluents of the Cauca river contributing 35.90m3seg  . The area of the Palo river basin is 1.471,01 Km2 and its length of main channel is 46.21km. Its’ main tributaries are López, Jambaló y La Paila rivers . The intervention of different actors on the river basin produced the division of its geographical area in three zones: the indigenous communities in the upper zone, afrodescents in the middle zone and settlers and agroindustry in the lower zone .