Flood Zone
Indicative 3b
Flood Zone 3b
Flood Zone 3a
Flood Zone 2
RoFfSW 3.3%
AEP Extent
RoFfSW 1% AEP
Extent
RoFfSW 0.1%
AEP Extent
< 25%
>= 25% <50%
>= 50% <75%
>= 75%
Fluival 1% AEP
+ 35%
Fluival 1% AEP
+ 65%
Fluival 0.1%
AEP + 25%
Areas Susceptible to
Groundwater Flooding
Emergency Planning
Authority Information
Source
Protection
Zone
present
Historic
Landfill
Sites
0 0.45 0.90.225
km
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Flood Defences
Historical Flood Outlines
LEVEL 2 COMMUNITY SUMMARY TABLES
KINGS LYNN LEVEL 2
STRATEGIC FLOOD RISK ASSESSMENT
LEGEND
Sources of Flooding
Flood Zones
Surface Water
Depth (m)
0 - 0.6
0.6 - 1
1 - 2
2 - 3
3 - 4
4 +
Velocity (m\s)
0 - 0.2
0.2 - 0.5
0.5 - 1.0
1.0 - 2.0
2.00 +
Hazard Rating
Very low
hazard -
caution
Danger for
some
Danger for
most
Danger for all
Community Name:
West Walton/Walton Highway
Residual Risk (Breach)
Fluvial Climate Change
Surface Water Climate Change
Surface Water
1% AEP + 40%
Tidal Climate Change
Tidal 0.5% AEP
Tidal 0.1% AEP
Climate Change
Most likely cause of
flooding (3.3% AEP)
Community
Kings Lynn
Council
Boundary
Main Rivers
Detailed River
Network
IDB Drains
Highest risk of
flooding (0.1% AEP)
Depth (m)
0 - 0.6
0.6 - 1
1 - 2
2 - 3
3 - 4
4 +
Velocity (m/s)
0 - 0.2
0.2 - 0.5
0.5 - 1.0
1.0 - 2.0
2.00 +
Hazard Rating
Very low
hazard -
caution
Danger for
some
Danger for
most
Danger for
all
High
Medium
Low
Very Low
Flood Warning
Areas
Flood Alert
Areas
Recorded Flood
Outlines
Embankment
Flood Gate
Flood Walls
Areas Benefitting
from Flood Defences
Highest Flood Risk Source:
Tidal
Most Likely Flood Risk Source:
Surface Water
Version: Final v3.0
Date Drawn: 22/03/19
0 - 0.6
0.6 - 1
1 - 2
2 - 3
3 - 4
4 +
Risk of flooding from
rivers and sea
Other
Breach Depth (m)