The Pērse is a right tributary to the river Daugava in Latvia, flowing through Ērgļi, Pļaviņas and Koknese municipalities.

The river crosses roads A6, P79, P80 and the Riga-Krustpils railway line.

The 50-km long Pērse begins in Kārdeces forest in Sausnēja parish.

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