POIO DAM |
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| PURPOSE - Hydroelectric | |
| LOCATION | GENERAL FEATURES |
| District -
Portalegre Municipality - Nisa Site - Póvoa River Basin - Tejo River - Nisa river |
Promoting entity
- HIDROTEJO, Hidroeléctrica do Tejo, SA Owner - HIDROTEJO Engineering by - Hidro Eléctrica Alto Alentejo Construction by - Hidro Eléctrica Alto Alentejo Project year - 1926 Year of completion - 1932 |
| RESERVOIR | |
| Reservoir area
- 1 100 x 1 000m2 Gross capacity - 6 400 x 1 000m3 Effective storage - 4 600 x 1 000m3 |
|
| DAM | |
| Concrete -
Gravity Height above foundation - 18 m Height above streambed - 15 m Crest length - 278 m Foundation - Granite Volume of dam body - 8 x 1000 m3 |
|
| SPILLWAY | BOTTOM OUTLET |
| Location - Dam
body Control type - Controlled Spillway type - Over the dam Sill elevation - 274,5 m Sill length - 4 x 2,2=8,8 m Number of gates - 4 Maximum discharge - 110 m3/s |
Location -
Thalweg Type - Through the dam |
| POWER PLANT | |
| Type - Outdoor
reservoir Number of installed units - 2 Type of units - Francis Power installed capacity - 1,5 MW Mean annual energy output - 4,8 GWh |
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