| Afluenți | río Águeda[*][[río Águeda (river in Portugal and Spain)|]], Rio Távora[*][[Rio Távora (river in Portugal)|]], Tormes[*][[Tormes (river tributary to Douro, in the provinces of Ávila, Salamanca and Zamora, Castile and León, Spain)|]], río Adaja[*][[río Adaja (river in Spain)|]], Rio Corgo[*][[Rio Corgo (river in Portugal)|]], Río Esla[*][[Río Esla (river tributary to Douro, in the provinces of León and Zamora, Castile and León, Spain)|]], Pisuerga[*][[Pisuerga (river in Spain)|]], Río Támega, Rio Tua[*][[Rio Tua (river in Portugal)|]], Rio Arda[*][[Rio Arda (river in Portugal)|]], río Bajoz[*][[río Bajoz (watercourse in Spain)|]], Trabancos[*][[Trabancos (river in Spain)|]], Arandilla[*][[Arandilla (river in Spain)|]], arroyo Jaramiel[*][[arroyo Jaramiel (stream in Valladolid Province, Spain)|]], arroyo Valcorba[*][[arroyo Valcorba (stream in Valladolid Province, Spain)|]], río Bañuelos[*][[río Bañuelos (river in Spain)|]], Arroyo Botijas[*][[Arroyo Botijas (stream in Segovia, Spain)|]], Río Froya[*][[Río Froya (river in Spain)|]], río Gromejón[*][[río Gromejón (river in Spain)|]], Río Mazos[*][[Río Mazos (river in Spain)|]], Uces[*][[Uces (river tributary to Douro, in the province of Salamanca, Castile and León, Spain)|]], Cega[*][[Cega (river in Spain)|]], Rio Bestança[*][[Rio Bestança (river in Portugal)|]], río Caracena[*][[río Caracena (river in Spain)|]], río Riaza[*][[río Riaza (river in Spain)|]], Río Rituerto[*][[Río Rituerto (river in Spain)|]], Ribeiro de Carcavelos[*][[Ribeiro de Carcavelos (river in Portugal)|]], Rio Cabrum[*][[Rio Cabrum (river in Portugal)|]], Rio Febros[*][[Rio Febros (river in Portugal)|]], Rio Frio (Porto)[*][[Rio Frio (Porto) (river in Portugal)|]], Rio Sousa[*][[Rio Sousa (river in Portugal)|]], Rio Teixeira (Douro)[*][[Rio Teixeira (Douro) (river in Portugal)|]], Rio Torto (Douro)[*][[Rio Torto (Douro) (river in Portugal)|]], Rio Uíma[*][[Rio Uíma (river in Portugal)|]], Rio Varosa[*][[Rio Varosa (river in Portugal)|]], Río Guareña[*][[Río Guareña (watercourse in Spain)|]], Rio Pinhão[*][[Rio Pinhão (river in Portugal)|]], Río Golmayo[*][[Río Golmayo (river in Spain)|]], Río Hornija[*][[Río Hornija (watercourse in Spain)|]], río Ucero[*][[río Ucero (watercourse in Spain)|]], Rivera de los Moriegos[*][[Rivera de los Moriegos |]], Rio Paiva, Sabor[*][[Sabor (river in Spain and Portugal)|]], Rio Coa[*][[Rio Coa (river in Portugal)|]], Zapardiel[*][[Zapardiel (river in Spain)|]], Duratón[*][[Duratón (river in Spain)|]], Valderaduey[*][[Valderaduey (river in Spain)|]], Huebra[*][[Huebra (river tributary to Douro, in the province of Salamanca, Castile and León, Spain)|]]  |
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