Wednesday October 30. 2002

The Kárahnjúkar dam will have a maximum height of 193 m and will be constructed using 8.5 million m³ of fill materials. The Desjará dam will be 60 m in height. Read more on key figures here.

Installed capacity	690 MW
Generating capacity	Approx. 4,600 GWh/year
Turbines	Francis, vertical axis
Number	6
Rated discharge per unit	24 m3/s
Rated output per unit	115 MW
Hálslón reservoir
Area of full reservoir	57 km2
Lenght of reservoir	25 km
Live storage	2,100 million m3
Reservoir full supply level (FSL)	625 m a.s.l.
Reservoir minimum operating level (MOL)	575 m a.s.l.
Hálslón servoir catchment area	1,806 km2
Average inflow to Hálslón reservoir	107 m3/s
Kárahnjúkastífla dam
Maximum dam height	193 m
Dam length	730 m
Fill materials	8.5 million m3
Desjarárstífla dam
Maximum dam height	60 m
Dam length	1,100 m
Fill materials	2.8 million m3
Sauðárdalsstífla dam
Maximum dam height	25 m
Dam length	1.100 m
Fill materials	1.5 million m3
Ufsarlón pond
Area of full reservoir	1 km2
Maximum water level	625 m a.s.l.
Ufsarlón pond catchment area	430 km2
Average inflow to Ufsarlón pond	31 m3/s
Ufsarstífla dam
Maximum dam heigth	37 m
Dam length	620 m
Fill materials	0.6 million m3
Kelduárlón reservoir
Area of full reservoir	7.5 km2
Reservoir full supply level (FSL)	669 m a.s.l.
Live storage	60 million m3
Kelduárstífla dam
Maximum dam heigth	26 m
Dam length	1,650 m
Fill materials	0.8 million m3
Tunnels	Approx. 72 km
Headrace from Hálslón (dia: 7.2-7.6 m)	39.7 km
Headrace from Ufsarlón (dia: 6.5 m)	13.3 km
3 adits to headrace (dia: 7.2-7.6 m)	6.9 km
2 diversion tunnels and adit at dam	2,4 km
Grouting galleries at dam	0.5 km
Surge tunnel (dia: 4.5 m)	1.7 km
2 diversion tunnels Hraunaveita (dia: 4.5 m)	3.7 km
2 vertical pressure tunnels (dia: 4.0 m)	0.8 km
Access tunnel to power station (dia: 7.5 m)	1.0 km
Tailrace tunnel (dia: 9.0 m)	1.3 km
Cable tunnel (dia: 4.0 m)	1.0 km
Total head	599 m
Rated discharge (maximum discharge)	144 m3/s
Average discharge	110 m3/s