Flood hazard map

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.

Status: Submitted

Submitter: Norwegian Mapping Authority

Owner: Norwegian Water Resources and Energy Directorate

Version number 1

Updated: 11/19/2019 4:19:28 AM

Usage

Flood hazard maps should be used in land use planning to identify areas prone to flooding( should not be developed), and in order to assess relevant risk-reducing measures if it is impossible to avoid development. Guidelines 2-2011 Flaum- og skredfare i arealplanar (Flood and avalanche risk in land use planning) describe how safety requirements for structures specified in the Regulations on technical requirements for building works (TEK 17), section 7-2 can be fulfilled in spatial planning. When dealing with detailed zoning plans, division proceedings and processing building applications, it is necessary to take the limited accuracy of the flood hazard maps into account. In-situ measurements of elevation should be checked and compared to the calculated water levels. If development is planned in areas prone to flooding, it is recommended to add a safety margin to the calculated water levels to take uncertainty in the data into account.

Theme: Crisis management

In scope of Inspire Directive: Yes

DOK according to KMD-definitions: Yes

In scope of Norway digital agreement: Yes

Land-use plans subject to law (PBL): No

In scope of the Geodata Act: Yes

DOK-status

DOK-status: Proposal

DOK-status date approved:

Updated: 11/19/2019 4:19:28 AM

Geodatalov status

ASSESSMENT POINT
STATUS VALUE
COMMENT
Metadata
good
Product spesification
good
SOSI requirement status
good
GML requirement status
good
WMS status
useable
WFS status
useable
ATOM feed status
good
Nedlastingskrav status
good