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5 Challenges: Sectoral Descriptions
U N I T E D K I N G D O M
F R A N C E
B E L G I U M
N E T H E R L A N D S
G E R M A N Y
D E N M A R K
Elevation map
North Sea Region
0
20
40
60
80
100 km.
Elevation (m/NAP)
less than -2 m
-2 - -0,5 m
-0,5 - 0 m
0 - 0.5 m
0,5 - 1 m
1 - 1,5 m
1,5 - 2 m
2 - 3 m
3 - 4 m
4- 5 m
more than 5 m
International borders
Sources:with kind permission from
Denmark:
Kort- & Matrikelstyrelsen, Copenhagen, Denmark
Cell: 10x10 m, height m
Belgium:
AGIV (Agency of Geographic Information Vlaanderen)
Cell: 25x25 m, height cm
Germany:
Landes vermessungsamt Schleswig-Holstein
LGN (Landesvermessung + Geobasisinformation NLWKN Niedersachsen)
Cell: 50x50 m, height cm
Germany:
Landesbetrieb Strassen, Brucken und Gewasser
Freie und Hansestadt Hamburg
Cell 25 *25 m, height m
Netherlands:
Ministry of Transport, Public Works and Water Management VenW
NL AHN (Actual Height Netherlands)
Cell: 5x5 m , height cm
United Kingdom:
Intermap Technologies Inc
Cell: 50x50 m , height cm
Transformation Parameters Between National European
Height Systems and Dutch NAP:
Netherlands:
NAP (New Amsterdam Level)
Belgium:
grid +230 cm = NAP
Germany (LGN):
grid -2 cm = NAP
Germany (Hamburg):
grid -2 cm = NAP
Denmark:
grid +2 cm = NAP
United Kingdom:
grid - 3 cm = NAP
Fig. 5.2
The flood-prone area at the coast of the southern North Sea area (yellow: above +10 m, green:
+5 to +10 m above sea level, light
to dark blue:
+5 m down to –7 m below sea level). Source: SafeCoast (2008, Annex 3.1)