Data on Norwegian dams Dam Type Height(m) Crest length(m) Completed (year) Langevann Slab 31 270 1967 buttress Virdnejavri Arch 144 150 1987 Zakariasvatn Arch 90 150 1969 Storglomvatn Rockfill with asphaltic 125 825 1998 concrete core Storvatn Rockfill with asphaltic 90 1475 1987 concrete core Oddatjørn Rockfill with 140 470 1986 moraine