The Segundo River (, 'Second River'), also known as Xanaes, is a river in the center-north of the

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of Córdoba,

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. It is born in the Paravachasca Valley at the confluence of the Los Molinos and Anizacate rivers, on the eastern slopes of the Cumbres de Achala (Sierras Grandes), about

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. It flows west–east and its course forms a

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at the Los Molinos Dam (at ), which is employed to generate

hydroelectricity Hydroelectricity, or hydroelectric power, is Electricity generation, electricity generated from hydropower (water power). Hydropower supplies 15% of the world's electricity, almost 4,210 TWh in 2023, which is more than all other Renewable energ ...

. It then flows to the northeast and divides into two main arms, which empty in the Mar Chiquita

salt lake A salt lake or saline lake is a landlocked body of water that has a concentration of salts (typically sodium chloride) and other dissolved minerals significantly higher than most lakes (often defined as at least three grams of salt per liter). I ...

, from its origin. The average inflow is . Together with the Primero River (Suquía) and the Dulce River, it forms part of the basin of Central Argentina. On its path are located the following cities: Río Segundo, Pilar, Villa del Rosario, Tránsito, Arroyito, El Tío, Concepción del Tío, Marull, Balnearia and Altos de Chipión. The alternative name of ''Xanaes'' is said to have its origin in the Native American language of the Comechingones, and has been almost lost until the 1980s, when Xanaes was started being used in maps, perhaps to attract tourism with a more ''exotic'' name, but the population of the area continues to use the denomination ''Segundo''.

References

Hydrography of Córdoba
* ''Río Segundo'' in the

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. Rivers of Argentina Rivers of Córdoba Province, Argentina {{Argentina-river-stub