Flood hazard map
Definition: Flood hazard maps show areas that are prone to flooding at various flood levels ( return periods). Flood hazard maps are prepared for floods with 20-, 200- and 1000-year return period. In areas where climate change is expected to increase water discharge with more than 20%, flood hazard maps are being prepared for a 200-year flood in the year 2100.
Submitter: Norwegian Mapping Authority
Owner: Norwegian Water Resources and Energy Directorate
Version number 1