Barragem de Poilão
Reservoir in Santiago, Cape Verde
From Wikipedia, the free encyclopedia
Barragem de Poilão is a dam located in the eastern part of the island of Santiago, Cape Verde, in the municipality of São Lourenço dos Órgãos. It impounds the stream Ribeira Seca, the island's largest river.[1] the reservoir, used for irrigation, stretches between the villages Poilão and Levada. North of the reservoir is the national road from João Teves to Achada Fazenda (EN1-ST03).
| Barragem de Poilão | |
|---|---|
The reservoir and the dam of Poilão | |
  Barragem de Poilão | |
| Location | São Lourenço dos Órgãos, Santiago, Cape Verde |
| Coordinates | 15.0757°N 23.5540°W |
| Type | Reservoir |
| Ribeira Seca | |
| Ribeira Seca | |
| 28 km2 (11 sq mi) | |
| Basin countries | Cape Verde |
| Max. length | 1.23 km (0.76 mi) |
Surface area | 17 ha (42 acres) |
| Max. depth | 18 m (59 ft) |
Water volume | 1.2×106 m3 (42×106 cu ft) |
Surface elevation | 118 m (387 ft) |
Specifications
The brick dam was completed in July 2006. Its maximum length is 1,235 m, and its maximum surface area is 17 ha. Its surface level is 118 m above sea level, and its depth at the dam is 18 m. Its volume is 1.2×106 m3 (42×106 cu ft). The island has a dry climate with occasional torrential downpours. These cause the transport of large quantities of sediment into the reservoir and a study has found that between 2006 and 2013, the storage capacity of the reservoir has been reduced by almost one half.[2]