ANDORINHAS DAM (Travassos) | |
PURPOSE - Hydrolectric | |
LOCATION | GENERAL FEATURES |
District -
Braga Municipality - Póvoa de Lanhoso Site - Andorinhas River Basin - Ave River - Ave river |
Promoting entity
- HDN, Energia do Norte Owner (RSB) - HDN Engineering by - A. Stucky Construction by - Joaquim Moreira Ramalhão Project year - 1941 Year of completion - 1945 |
HYDROLOGY | RESERVOIR |
Mean annual
rainfall - 2280 mm Mean annual runoff - 217900 x 1000 m3 Flood runoff - 450 m3/s Return period - 1000 years |
Reservoir area -
210 x 1000m2 Gross capacity - 1200 x 1000m3 Normal water level (NWL) - 185,7 m Maximum flood level (MFL) - 189,1 m |
DAM | |
Concrete - Gravity
dam Height above foundation - 25 m Crest elevation - 191,2 m Crest length - 103,5 m Crest width - 1,8 m Foundation - Granite Volume of dam body - 12 x 1000 m3 |
|
SPILLWAY | BOTTOM OUTLET |
Location - Dam
body Control type - Uncontrolled Spillway type - Over the dam Sill elevation - Sill length - 33 m Maximum discharge - 450 m3/s Energy dissipation - Stilling basin |
Location - Thalweg Type - Through the dam Section - d 1,60m Upstream control - Gate Downstream control - Hollow jet Energy dissipation - Stilling basin |
POWER PLANT | |
Type - Outdoor
power station Number of installed units - 2 Type of units - Francis Power installed capacity - 8,8 MW Mean annual energy output - 19 GWh |