| |
|
Location |
/ |
|
Geographical coordinates |
64°11´N
17°09´W |
|
Name of
outlet glacier |
Skeidarájökull |
|
Lake type |
Lateral |
|
Type of dam
(e.g. ice, moraine) |
ice dam |
|
Risk of Damages |
/ |
|
Downstream
topography |
ice
rock
sander |
|
Sediment /
Debris Content |
low |
|
Rockfall
into the lake |
no |
|
Failure
mechanism |
hydraulic,
subglacial drainage |
|
Mortality |
one in 1898 |
|
Damages |
road, bridges |
|
|
Flow Characteristics |
/ |
|
Length of floodpath |
18 km |
|
Flow path (e.g, subglacial, supraglacial) |
marginal subglacial
and over land |
|
- h (hydraulic
head)(lake surface to flood plain, m) |
558 – 110 = 448 |
|
Average grade |
1.4 % |
|
Flood river |
Súla, Blautakvísl |
|
References |
/ |
|
Maps |
I .Geod.Surv.
(1939)
AMS (1945)
DMA (1982-1993) |
|
Articles
(partial list)
see Main
Reference Site |
Akselson 1936
Kjartansson 1938 Thorarinsson 1939
Rist 1970,1973
Björnsson and Pálsson 1989 |
|
Aerial Images |
Iceland Land Survey |
|
Photographs |
Helgi Björnsson |
|
|
Lake Information |
/ |
|
Lake level elevation (m a.s.l.) |
560 – 580 |
|
Depth (m) |
200
(1939)
150 (1989) |
|
Area (km2) |
18 (1939)
10 (1989) |
|
Statistics |
/ |
|
Flood interval |
1 per year to
1 per several years |
|
Flood Volume
(106 m3) |
100 – 200 |
|
Peak discharge (m3/s) |
1500 – 3000 |
|
Duration (days) |
4 – 7 |
|
Time of peak discharge (day) |
2 – 3 |
|
Lake level
change (m) |
17 – 23 |
|
Flood dates |
/ |
|
Flood dates
(partial list) |
Sept. 1935; July 1939; Aug. 1969;
Oct.1970; Sept. 2001 |
|
|