The Rio Braço Norte Direito — also known locally as the Santa Clara River — is a tributary of the Itapemirim River system in the state of Espírito Santo, eastern Brazil. Rising near the western border of the municipality of Ibitirama, close to the frontier with Alto Caparaó in Minas Gerais, the river flows in a general west-to-east direction until reaching Iúna, where it shifts southeast before joining the Braço Norte Esquerdo to form the Itapemirim River. The river's headwaters originate within or near the Caparaó National Park, lending the upper reaches a wild, mountainous character. One of the river's most celebrated features is the Cachoeira da Fumaça, a 140-meter (460-foot) waterfall that draws thousands of visitors each year and serves as a dramatic landmark along the drainage. The river forms a core part of the Alto Itapemirim sub-region, a hydrographic zone that encompasses the full drainage areas of both the Braço Norte Direito and Braço Norte Esquerdo rivers.