Raia (river)
| Raia | ||
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| Data | ||
| location | Alentejo , Portugal | |
| River system | Tagus river | |
| Drain over | Sorraia → Tagus → Atlantic | |
| origin | Confluence of the Seda and Tera at Cabeção in the Alto Alentejo 38 ° 56 ′ 27 ″ N , 8 ° 3 ′ 21 ″ W |
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| confluence | above the municipality of Couço with the Sor to Sorraia Coordinates: 38 ° 59 ′ 42 ″ N , 8 ° 17 ′ 2 ″ W 38 ° 59 ′ 42 ″ N , 8 ° 17 ′ 2 ″ W
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| length | approx. 95 km | |
The river Raia ( Portuguese Ribeira da Raia ) is an approx. 95 km long headwaters of the Sorraia , a left tributary of the Tejo ; the other source river is the Ribeira do Sor . The headwaters are in Monforte , in the Alto Alentejo sub-region . Shortly before the confluence with the Sorraia above the municipality of Couço, the Sor flows through the reservoir of the Barragem do Maranhão dam .