GUILHOFREI DAM |
|
PURPOSE - Hydroelectric / Recreation | |
LOCATION | GENERAL FEATURES |
District -
Braga Municipality - Vieira do Minho Site - Guilhofrei River Basin - Ave River - Ave river |
Promoting entity
- HDN, Energia do Norte, SA Owner - HDN Engineering by - A. STUCKY Construction by - Joaquim Moreira Ramalhão Year of completion - 1938 |
HYDROLOGY | RESERVOIR |
River basin area
- 122 km2 Mean annual rainfall - 2626,6 mm Mean annual runoff - 17070 x 1000 m3 Flood runoff - 350 m3/s |
Reservoir area
- 1630 x 1000m2 Gross capacity - 21200 x 1000m3 Effective storage - 21080 x 1000m3 Dead storage - 120 x 1000m3 Normal water level (NWL) - 333,3 m Maximum flood level (MFL) - 333,3 m |
DAM | |
Type - Masonry
and concrete gravity dam Height above foundation - 49 m Crest elevation - 337 m Crest length - 190 m Volume of dam body - 55 x 1000 m3 |
|
SPILLWAY | BOTTOM OUTLET |
Location - Dam
body Control type - Controlled Spillway type - Over the dam Sill elevation - 330,6 m Sill length - 18 m Number of gates - 2 radial gates Maximum discharge - 445 m3/s Energy dissipation - Hydraulic jump |
Location - Thalweg Type - Through the dam Section - D 2,0m Upstream control - Yes Downstream control - Yes Energy dissipation - Stiliing basin |
POWER PLANT | |
Type - Dam
toe Number of installed units - 1 Kaplan and 1 Francis Power installed capacity - 4,6 MW Mean annual energy output - 11 GWh |