Embalse Las Maderas is a large reservoir located a short distance from San Salvador de Jujuy, in the province of Jujuy, Argentina. The artificial lake covers approximately 960 hectares, making it one of the more substantial bodies of water in the region. It forms part of the Sistema Multipropósito Las Maderas, a multi-purpose hydraulic complex that regulates flows from the Ríos Perico and Grande, with a total storage capacity of 270 cubic hectometers. The reservoir's shape is characterized by a series of inlets or "fingers" where smaller waterways — including the Ríos Los Naranjos, Las Lanzas, El Algarrobal, and others — feed into the main body of water.

The reservoir is well established as a venue for water-based activities, including canotaje (canoeing/kayaking), windsurf, sailing, motorboat excursions, and water skiing. Its configuration is particularly suitable for sailing. The surrounding landscape consists of hills and open terrain, giving the water an expansive, open character.

Fishing is a significant activity on the reservoir, and regulations directly affect paddlers who may also be fishing or sharing the water. Embarcada (boat-based) fishing, including catamarans, is authorized in the designated Zona de la Palma on Wednesdays from 08:00 to 24:00, Fridays and Saturdays from 17:00 to 24:00, and Sundays and public holidays from 08:00 to 24:00. A seasonal fishing closure (veda) applies from mid-September onward on provincial reservoirs, with the exception of the authorized embarcada fishing windows at Las Maderas. Paddlers should be aware of these regulations and the presence of fishing vessels during permitted hours. The dominant fish species is pejerrey (Odontesthes bonariensis).

Boat rentals — including fishing and leisure launches — are available through the Club de Pescadores La Ciénaga, which provides an access point and some infrastructure for those without their own craft. The reservoir's proximity to San Salvador de Jujuy makes it accessible for day trips. The surrounding area is open and natural, with cerros (hills) framing the water.