The Rivera de Benalija is a small stream in the north of the Sierra Norte Natural Park, which runs along the southwest edge of the municipal district of Alanís. It empties into one of the tail ends of the Pintado Reservoir. This seasonal stream may dry up in the summers with little rainfall.
Near the town of Aznalcázar, and a short distance from the Guadiamar riverbank is the Visitor Centre of the same name. This is the starting point for a visit to the Green Corridor and its surroundings.