Investment to enhance productive capacity of workers in these reserves would significantly increase annual gains, certification could add value to the final products. However, many protected areas are not yet accessible enough to allow a significant flow of tourists, there is still significant room to enhance tourism potential (Section 5.1). In addition, it greatly contributes to the provision and conservation of water resources. About 80% of hydropower comes from sources located within or downstream of federal protected areas, 9% of drinking water is directly captured in protected areas and 26% is collected in downstream sources, and 4% of the water used in agriculture and irrigation is taken from sources within or downstream of protected areas.