Lagoa do Portinho, located near Parnaíba in the state of Piauí, is a freshwater lagoon that offers a calm and scenic environment for paddlers. The lagoon is set within a landscape of sand dunes, part of the small Lençóis Piauiense, and is surrounded by lush vegetation, contributing to a serene atmosphere. Visitors frequently engage in kayaking on its waters. The area is a hub for various recreational activities, including buggy rides, jet skiing, and boat tours, which means paddlers should be prepared to share the water with other motorized and non-motorized vessels. There is typically no entrance fee to access the main areas of the lagoon. Facilities for visitors include parking areas and a selection of diverse restaurants nearby. The lagoon is described as a beautiful location suitable for a fresh water bath, indicating good water quality for swimming. The combination of the lagoon's calm freshwater, the surrounding dunes, and the accessible amenities creates a relaxed and recreational vibe, suitable for a leisurely day of paddling and exploration.