Represa do Rio Jaguari is a large reservoir in the state of São Paulo, Brazil, formed primarily by the Rio Jaguari. It is one of the key components of the Sistema Cantareira, the water supply network that serves a significant portion of Greater São Paulo. The reservoir is centered around the municipality of Igaratá, where it functions as a focal point for local tourism and community identity.

The water is calm, making it well suited for flatwater paddling activities such as kayaking and stand-up paddleboarding. Multiple waterfront properties along the shoreline offer kayaks and SUP boards for guest use, and several rental accommodations feature private piers and direct water access. Launching from private properties is common. The reservoir has at least one boat launch area accessible from the São José dos Campos side, reachable via a dirt road from the city or via exit 162 km on the Dutra highway. A small bar and restaurant operates near that boat launch area, though with variable hours.

The surrounding landscape includes mountains and Atlantic Forest remnants, giving the reservoir a visually varied shoreline. The area around Igaratá hosts marinas and nautical events, and the reservoir sees motorized boat and jet ski traffic, particularly on weekends, which paddlers should account for when planning outings. Weekend activity levels can be quite high.

Water quality is generally clean and suitable for swimming, which is a positive indicator for paddlers who may capsize. The reservoir sits roughly 115 km from São Paulo and approximately 1 hour and 10 minutes from both São Paulo and Campinas, making it a practical destination for day trips or weekend excursions from either city.

Facilities in the area include marinas, ranchos (waterfront leisure properties), and temporary food and drink kiosks that appear on weekends near at least one overlook parking area. No specific paddling restrictions or permit requirements apply.