Ebro Delta in the context of "Ebro River"

The Ebro (Spanish and Basque [ˈeβɾo] ; Catalan: Ebre, Western: [ˈeβɾe], Eastern: [ˈeβɾə]) is a river of the north and northeast of the Iberian Peninsula, in Spain. It rises in Cantabria and flows 930 kilometres (580 mi), almost entirely in an east-southeast direction. It flows into the Mediterranean Sea, forming a delta in the Terres de l'Ebre region, in southern Catalonia. In the Iberian peninsula, it ranks second in length after the Tagus and second in discharge volume, and drainage basin, after the Douro. It is the longest river entirely within Spain; the other two mentioned flow into Portugal.

The Ebro flows through many cities (Spanish: ciudades): Reinosa in Cantabria; Frías and Miranda de Ebro in Castile and León; Haro, Logroño, Calahorra, and Alfaro in La Rioja; Tudela in Navarre; Alagón, Utebo, and Zaragoza in Aragon; and Flix, Móra d'Ebre, Benifallet, Tivenys, Xerta, Aldover, Tortosa, and Amposta in the province of Tarragona (Catalonia).
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In geology and geomorphology a base level is the lower limit for the vertical position of an erosion process. The modern term was introduced by John Wesley Powell in 1875. The term was subsequently appropriated by William Morris Davis who used it in his cycle of erosion theory. The "ultimate base level" is the surface that results from horizontal projection of the sea level under landmasses (the geoid). It is to this base level that topography tends to approach due to erosion, eventually forming a peneplain close to the end of a cycle of erosion.

There are also lesser structural base levels where erosion is delayed by resistant rocks. Examples of this include karst regions underlain by insoluble rock. Base levels may be local when large landmasses are far from the sea or disconnected from it, as in the case of endorheic basins. An example of this is the Messinian salinity crisis, in which the Mediterranean Sea dried up making the base level drop more than 1000 m below sea level.

Calasparra rice (Spanish: arroz de Calasparra) is a variety of rice native to the region of Murcia, Spain.

Along with rice produced in Valencia and the Ebro Delta, it is one of three Spanish rices with a Denominación de Origen, since 1986. It is named for the municipality of Calasparra.

The Parc Natural dels Aiguamolls de l'Empordà is a natural park in Catalonia, Spain. It forms part of the Bay of Roses and, like the Ebro Delta, was a malarial swampland. The marshland lies between the Rivers Fluvià and Muga. It is the second largest wetland in Catalonia at over 4,800 hectares and was established in 1983.

During the 19th century, much of the marsh was drained as canals were created and the land converted to agriculture. However, virgin marsh and dunes remained and was given Natural Park status in the 1980s after a campaign to save the area from development.