While not on the coast, the Community of Madrid features vital rivers and several large reservoirs that serve as recreational hubs and crucial water sources.
**Rivers:** - **Manzanares River:** The river that flows directly through the capital city, famously revitalized by the Madrid Río project. - **Tagus (Tajo) River:** The longest river in the Iberian Peninsula passes through the southern part of the region, notably shaping the cultural landscape of Aranjuez. - **Jarama, Guadarrama, and Lozoya Rivers:** Key tributaries that carve through the regional landscapes, with the Lozoya providing some of the highest-quality drinking water in Spain.
**Lakes and Reservoirs:** - **Pantano de San Juan:** Often called "the beach of Madrid," this reservoir is the only one in the region where motorized boating and swimming are fully permitted. It is a major summer destination. - **El Atazar Reservoir:** The largest reservoir in the region, offering stunning viewpoints and opportunities for sailing and windsurfing.


