Zaragoza
Location

Zaragoza lies in the north-east of the Iberian Peninsula, in the rather arid depression formed by the valley of the Ebro. The Ebro cuts across the city in a west north-west by east south-east direction, entering the municipality at 205 metres above sea level and exiting the municipality at a level of 180 metres above sea level.

The city enjoys a beneficial location at the geographical centre of the rough hexagon formed by the Spanish cities of Bilbao, Madrid, Valencia and Barcelona and the French cities of Bordeaux and Toulouse.

The municipality has a surface of 973.78 km (375.98 sq mi), making it the ninth largest municipality in Spain.

While the river banks are largely flat, the territory flanking them can display a rugged terrain, featuring muelas and escarpments. The surrounding elevations rise up to heights of about 600–750 metres above sea level. The locations near the meanders of the Ebro feature some sinkholes formed upon the subsidence of the gypsum -rich soil, that can form ponds fed from irrigation water. There is also an instance of seasonal endorheic lagoon, la Sulfúrica, in the moors located in the southern part of the municipality.

The Roman core of Caesaraugusta was founded on the right bank of the Ebro, with the north-east corner limiting the confluence of the Ebro with the Huerva river, a modest right-bank tributary of the Ebro. The Huerva runs through the city buried for much of its lower course. Zaragoza is also located near the confluence of the Ebro with the Gállego, a more voluminous left-bank tributary born in the Pyrenees.
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