Lagoa de Barra Velha is a coastal lagoon in Barra Velha, Santa Catarina, Brazil, running parallel to the sea. It is a brackish water body, separated from the ocean by a sandbar, and is characterized by calm, protected waters suitable for family-friendly activities. The lagoon is a popular and established location for paddle sports, specifically stand-up paddleboarding and kayaking. A notable paddling route involves a crossing of Lagoa de Barra Velha, Lagoa da Cruz, and the mouth of the Itapocu River, suggesting a multi-lagoon and river estuary journey connecting Barra Velha and Araquari. The lagoon also hosts organized paddling events, including an annual rally or regatta, indicating an active local paddling community. A key landmark for navigation is the Itapocu Suspension Bridge, which crosses the lagoon. The surrounding area offers a mix of natural and developed scenery, with views of the Atlantic Forest from nearby parks and urban infrastructure along parts of the shore. The lagoon's parallel orientation to the coast and brackish nature imply a connection to tidal cycles, and paddlers should anticipate potential wind exposure across its length. The presence of a major bridge and the mention of events suggest that boat traffic may be a factor to consider, particularly during scheduled activities.