Odivelas dam
| Odivelas dam | |||||
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| Coordinates | 38 ° 11 '7 " N , 8 ° 6' 55" W | ||||
| Data on the structure | |||||
| Construction time: | 1967 to 1972 | ||||
| Height above valley floor: | 48 m | ||||
| Height above foundation level : | 55 m | ||||
| Height of the structure crown: | 106 m | ||||
| Building volume: | 86,000 m³ (dam) 97,000 m³ (wall) | ||||
| Crown length: | 544 m | ||||
| Crown width: | 7.5 m | ||||
| Data on the reservoir | |||||
| Altitude (at congestion destination ) | 103 m | ||||
| Water surface | 9.73 km² | ||||
| Storage space | 70 million m³ | ||||
| Total storage space : | 96 million m³ | ||||
| Design flood : | 1,100 m³ / s | ||||
The Odivelas dam ( Portuguese Barragem de Odivelas ) is located in the Alentejo region of Portugal in the Beja district . It dams the Odivelas , a right (eastern) tributary of the Sado to a reservoir (port. Albufeira da Barragem de Odivelas ). The eponymous municipality of Odivelas is located about two kilometers southwest of the dam.
The project to build the dam began in 1967. The construction was completed in 1972. The dam is used for irrigation. It is owned by the Associação de Beneficiários da Obra de Odivelas .
Barrier structure
The barrier structure consists of a dam on the right and a pillar vault wall with 5 arches on the left. The height of the structure is 55 m above the foundation level (48 m above the river bed). The top of the wall is at a height of 106 m above sea level . The length of the top of the wall is 544 m and its width 7.5 m. The volume of the dam is 86,000 m³, the volume of the dam is 97,000 m³.
The dam wall has both a bottom outlet and a flood relief . A maximum of 50 m³ / s can be discharged via the bottom outlet, and a maximum of 650 m³ / s via the flood discharge. The design flood is 1,100 m³ / s; the probability of this event occurring was determined to be once every 100 (or 1,000) years.
Reservoir
With a normal storage target of 103 m (maximum 104.55 m at high water), the reservoir extends over an area of around 9.73 km² and holds 96 million m³ of water - 70 million m³ of this can be used. The minimum stowage destination is 91.3 m.
