1. Finland, Sweden and Norway – comments to proposal on flood hazard mapping

2. Flood hazard mapping Risk based approach
Mapping is not necessary when:
Currently no substantial risk
Risk is not expected to grow substantially in a long term perspective
Low risk areas:
Flood prone areas can be identified simpler – e.g. profiles from historic floods

5. Flood hazard mapping Why ? How? Large unpopulated areas
Further development will be in connection to already developed areas
Mapping will be unreasonably expensive
How?
Each country make a pre-study to identify areas relevant for mapping, must document that risk is 0 or very low

6. Finland Population density: 17 people per km2 Land use:
30% marsh land
10% lakes and rivers
km rivers
lakes, shoreline km

7. Sweden Population density: 20 people per km2 Land use:
Forest: 54%
Mountains 16%
Cultivated land 8%
Lakes and rivers 9%
Marshlands and mire ~30 % (some parts are forested)
km rivers;
km are being mapped
lakes

9. Norway Population density: 15 per km2 Land use: 53 000 km rivers
Mountainous: 44%
Forest: 38%
Glaciers, lakes and rivers: 7%
Marsh land: 6%
Farm land: 3%
Developed: 1%
km rivers
(map scale 1: )
1100 km are currently being mapped

10. Mountainous Birch forest Conifer forest Farm land Cities Mountainous
Telemark county

12. Telemark county

13. Protection plans

14. Map scale is of importance!
Catchment 1:
1:50 000 1:
Glomma
(41971 km²)
17120 km
53182 km
30655 km
Drammen
(17112 km²)
7461 km
26152 km
15359 km
Skien
(10811 km²)
5242 km
19119 km
10295 km