Reservatório Serra Azul is a water supply reservoir located in the municipality of Juatuba, Minas Gerais, approximately 25 km from the center of Belo Horizonte. It is formed by the damming of the ribeirão Serra Azul, a left-bank tributary of the rio Paraopeba and sub-tributary of the rio São Francisco. The dam stands 50 meters high with a crest length of 620 meters, making it the third largest reservoir within the Sistema Integrado do Paraopeba. The reservoir is operated by COPASA (Companhia de Saneamento de Minas Gerais) and serves as a critical drinking water source for roughly 20% of the population of the Região Metropolitana de Belo Horizonte.

Because of its role as a protected drinking water source, the reservoir is designated an environmental preservation area and is subject to strict access controls. All access requires prior authorization from COPASA, and visitors must schedule entry in advance and carry personal identification documents. The water is clean and well-preserved, and the reservoir is classified as oligotrophic. Fish species present include tucunarés, traíras, and tilápias.

Anyone planning to paddle here should contact COPASA directly before making any trip plans, as access is tightly regulated and may not be permitted for paddling activities. COPASA can be reached at (31) 3250-4600. The reservoir has experienced significant water level fluctuations due to drought conditions in the region, which is an additional planning consideration.