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Eresma River facts for kids

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River Eresma
20060819 - Río Eresma a su paso por el paraje de Los Redondillos (Los Huertos, Segovia).jpg
The Eresma River as it passes through Los Redondillos (Los Huertos, Segovia)
Country Spain
Region Castile and León
Physical characteristics
River mouth Adaja River
41°26′38″N 4°45′15″W / 41.44378°N 4.75404°W / 41.44378; -4.75404
Length 134 km
Basin features
Progression AdajaDouroAtlantic Ocean

The Eresma is a river located in central Spain. It flows through the region of Castile and León, passing through the provinces of Segovia and Valladolid. The river is about 134 kilometers (83 miles) long. Its basin, which is the area of land that drains into the river, covers about 2,940 square kilometers (1,135 square miles).

What's in a Name? The Eresma River's Story

The name of the Eresma River comes from an ancient language called Iberian. The original word was "Iri-sama." This means "that which surrounds the big city." You might think this "big city" is Segovia, but it's actually the town of Coca. Coca is located about 50 kilometers (31 miles) away from Segovia.

Where Does the Eresma River Flow?

Starting Point and Tributaries

The Eresma River begins in the Valsaín valley. This valley is part of the Sierra de Guadarrama mountain range. Several small streams come together here to form the river. Many of these streams flow down from mountains like Peñalara, Siete Picos, and Montón de Trigo. The most important rivers that join the Eresma are the Moros and the Voltoya. Both of these flow towards the north.

Journey Through Cities and Towns

After starting its journey, the Eresma River flows past San Ildefonso and Palazuelos. It then reaches the city of Segovia. Here, the river forms a tight curve, almost wrapping around the city. This curve is called a meander.

From Segovia, the Eresma River continues its path northwest. It passes by towns such as Hontanares, Los Huertos, Bernardos, Navas de Oro, Coca, and Villeguillo. The river then enters the province of Valladolid. In Valladolid, it flows near Olmedo, Pedrajas, Alcazarén, and Hornillos. Finally, the Eresma River flows into the Adaja from the right side, near the town of Matapozuelos.

How the River's Water Levels Change

The Eresma River has what is called a "pluvio-nival regime." This means its water levels change based on both rain and melting snow. The river usually has a lot of water during the autumn and winter. This is because of the rain that falls during these seasons. In the spring, when the snow on the mountains melts, the river can have a quick and strong flow of water.

See also

In Spanish: Eresma para niños

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