Laguna Chascomús sits about 120 km south of Buenos Aires, roughly a 90-minute drive from the city, and is also reachable by public bus and train. It is the largest lagoon in a chain known as Las Encadenadas, fed by several streams draining the surrounding pampas. The lagoon's perimeter runs approximately 30–32 km, making it a substantial body of water with an expansive, open feel. The town of Chascomús occupies the eastern shore, where a 3 km paved Costanera promenade borders the waterfront and provides easy access to the water's edge.

Kayaking and paddleboarding are well-established activities on the lagoon, alongside windsurfing, kite surfing, and fishing. Kayak rentals are available locally. The land surrounding the lagoon is public property, so the entire shoreline is accessible. The water is generally open and calm, though wind-driven conditions can develop given the exposed, flat pampas setting — a factor worth considering for paddlers in smaller craft.

Water quality can be affected during drought periods, when lower water levels make the lagoon appear murky or discolored. This is a recurring seasonal concern rather than a permanent condition, but paddlers should be aware that water clarity is variable. The lagoon is well-maintained near the town, with lighting along the central waterfront area.

The surroundings are predominantly flat grassland, consistent with the broader pampas landscape. Green spaces and picnic areas, including Parque de los Libres del Sur, line the shore near town. The lagoon is particularly known for its sunsets. The further one travels from the central town area, the quieter and less developed the shoreline becomes. A full circumnavigation of the lagoon by water would cover roughly 30 km, paralleling the bike route that locals and visitors use to loop the lake. Estancia La Alameda is located on the far side of the lagoon and represents a point of interest for those exploring beyond the town waterfront.

The area around Plaza Independencia and the colonial architecture of the town center are within easy reach of the waterfront. The Museo Pampeano, focused on gaucho culture and rural life, is also nearby for those spending time ashore between paddles.