Rio Jucu Braço Norte is a river system located in the mountainous southern region of Espírito Santo, Brazil, draining through a landscape shaped by rugged terrain and significant elevation changes. The river forms part of the broader Rio Jucu basin, one of the major watersheds of Espírito Santo, with its headwaters originating in the elevated interior of the state. The surrounding riparian environment reflects the Atlantic Forest biome, characterized by dense vegetation along the banks and a watershed that includes both protected natural areas and agricultural lands. The basin's mountainous origins give the river a dynamic character, with gradient-driven flow, varied substrate, and the kind of clear, oxygen-rich water typical of highland tropical streams.