The Canaletes and the Algars are the most important rivers that bathe the region. These are typically Mediterranean rivers, with little or no flow that increase during the rainy season and throughout the winter. The main peculiarity of the rivers of the region is that with the erosion they cause the formation of points of extraordinary beauty, like waterfalls of the Ventador or Sotorres, the Pots of the Baubo or the hermitage of the Fontcalda, where the river flows through a series of vertical rock gorges known as Estrets de la Fontcalda. In the sanctuary of La Fontcalda there is a source of thermal water with water that rises to 25 degrees Celsius. The river Algars rises on the northern slope of the Mola de Catí and forms the dividing line between Terra Alta and Teruel. Arnes receives the waters of its tributary, the Straits, and near Nonasp it competes with the Matarranya. The Canaletes, about 30 kilometers long, flows into the Ebro, not far from Benifallet. In La Pobla de Massaluca we find the confluence of the river Matarranya with the Ebro. In this area there is the marina, an ideal place for fishing and water sports.
Vineyards and olive groves
Terra Alta, from a bird's eye view, is an immense sea of vineyards, a landscape that, like that of the olive trees that also grow in the region, expresses the promise of the fruits of the land: the grapes and olives that l 'man, since time immemorial, has been able to transform into wine and oil, the two pillars on which rests the Mediterranean culture inherited from the Arab and Roman ancestors. Vineyards and olive groves star in the dry land crops of the Terra Alta and offer the visitor an infinite number of chromatic nuances: the tender green of the shoots of the vineyards becomes an intense green when the black and white grape carnations that turn towards the 'indigo or golden as they mature; the redness of the vines announcing the harvest; the silver green of the olive leaves; the olive greens; the ochres of the land sacrificed in cultivation and the golden reflections at dusk, when the orange is usurping the clear blue of the Highlands in the sky.