June 2010

Isle of Wight Strategic Flood Risk Assessment MK2

Appendix AIsland Wide Mapping

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

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Isle of Wight SFRA MK2

Figure 1Solid and Drift Geology

Scale: 1:120,000 @ A3

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BGS Complementary Licence 2006/109A

Drift Geology

Solid Geology

Clay and Silt

Clay, Silt and Sand

Clay, Silt, Sand and Gravel

Peat

Sand

Sand and Gravel

Sand, Silt and Clay

Calcareous Mud

Chalk

Clay

Clay, Silt and Sand

Ferruginous Sandstone

LimestoneLimestone and Argillaceous Rocks, InterbeddedMudstone

Sandstone

Sandstone and Chert

Sandstone, Siltstone and Mudstone

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

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Isle of Wight SFRA MK2

Figure 2IoW LiDAR Coverage

Scale: 1:120,000 @ A3

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Elevation

IoW Outline

High : 240 mAOD

Low : 0 mAOD

St Helens

Brighstone

Wroxall

Brading

Yarmouth

Bembridge

Wootton

West Wight

Ventnor

Cowes and East Cowes

The bay

Newport

Ryde

Chale

Niton

Rookley

Niton

Arreton

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

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Isle of Wight SFRA MK2

Figure 3

Regeneration and Development Areas

Scale: 1:120,000 @ A3

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Easte

rn Ya

r

River

Medin

a (Tid

al)

Thorley Brook

Scotchell

s Broo

k

Lukely

Brook

Shorwell StreamRive

r Medi

na

Brighstone Brook

Merstone Stream

Blackbridge Brook

Caulb

ourne

Rodge Brook

Atherfield Brook

Ningwood

Lake (

Tidal)

Spring

vale B

rook

Brook Stream

Western Yar

Newtown Brook

Clamerkin Brook

Barnsfield Stream

Palm

ers Br

ook

Pan Stream

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

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Isle of Wight SFRA MK2

Figure 4Buffered Main Rivers (20m)

Scale: 1:120,000 @ A3

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Main Rivers - 20m Buffer

IoW Outline

Key:

Potential Development Sites

St Helens

Brighstone

Wroxall

Brading

Yarmouth

Bembridge

Wootton

West Wight

Ventnor

Cowes and East Cowes

The bay

Newport

Ryde

Chale

Niton

Rookley

Niton

Arreton

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

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Isle of Wight SFRA MK2

Figure 5Potential Development Sitesand Flood Risk

Scale: 1:120,000 @ A3

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Key:

Main Rivers

Potential Development Sites

Isle of Wight Outline

Flood Zone 2

Flood Zone 3

St Helens

Brighstone

Wroxall

Brading

Yarmouth

Bembridge

Wootton

West Wight

Ventnor

Cowes and East Cowes

The bay

Newport

Ryde

Chale

Niton

Rookley

Niton

Arreton

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

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Isle of Wight SFRA MK2

Figure 6Potential Development SitesQualitative Flood Risk

Scale: 1:120,000 @ A3

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Key:

Main Rivers

IoW Outline

Probability of Flooding

Functional Floodplain

High Probability

Medium Probability

Low Probability

Potential Development Sites

Notes:Site is attributed with the flood probabilityassociated with the highest probability floodzone the site intersectsThe mapped extent of Flood Zone 3b hasbeen used to identify Functional FloodplainThe 1 in 100 year fluvial flood zone for thepresent day and the 1 in 200 year tidal extentpredicted for the year 2115 has been used toidentify sites at a High Probability. The1 in 1000 year fluvial flood zone for thepresent day and the 1 in 1000 year tidal extentpredicted for the year 2115 has been used toidentify sites at a Medium Probability. Sites onlyin Flood Zone 1 have been assigned a Low Probability

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

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Isle of Wight SFRA MK2

Figure 7Source Protection Zones (SPZs)and areas of Mass Movement

Scale: 1:120,000 @ A3

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Key:

Main Rivers

IoW Outline

Mass Movement - Rock Description

Source Protection Zone

Clay (Undifferentiated)

Rock (Undifferentiated)Sandstone (Undifferentiated)and Mudstone

Inner Zone (1)

Outer Zone (2)

Total Catchment (3)

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

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Isle of Wight SFRA MK2

Figure 8Groundwater Vulnerability Classification

Scale: 1:120,000 @ A3

November 2009

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Key:

Groundwater VulnerabilityClassification(Aquifer Type/ Leaching Potential)

Major / High

Major / Intermediate

Minor / High

Minor / Intermediate

Minor / Low

Non-Aquifer

Potential Development Sites

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

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Isle of Wight SFRA MK2

Figure 9SuDSInfiltration Potential

Scale: 1:120,000 @ A3

November 2009

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Key:

SuDSInfiltration Potential

High

Medium

Low

Unknown

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

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Figure 10SuDSGroundwater Contamination Potential

Scale: 1:120,000 @ A3

November 2009

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Key:

SuDSGroundwater Contamination Potential

High

Medium

Low

Unknown

Easte

rn Ya

r

River

Medin

a (Tid

al)

Thorley Brook

Scotchell

s Broo

k

Lukely

Brook

Shorwell StreamRive

r Medi

na

Brighstone Brook

Merstone Stream

Blackbridge Brook

Caulb

ourne

Rodge Brook

Atherfield Brook

Ningwood

Lake (

Tidal)

Spring

vale B

rook

Brook Stream

Western Yar

Newtown Brook

Clamerkin Brook

Barnsfield Stream

Palm

ers Br

ook

Pan Stream

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

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Isle of Wight SFRA MK2

Figure 11Historical Flooding

Scale: 1:120,000 @ A3

November 2009

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Key:

Historical Flooding(Flood Year)

2000

1999

19931974

Potential Development Sites

IoW Outline

Main Rivers

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

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Isle of Wight SFRA MK2

Figure 12Flood Zones 2 and 3(Tidal & Fluvial)

Scale: 1:120,000 @ A3

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Key:

Environment Agency Flood Zones August 2009Flood Zone 3b

Flood Zone 3b

Fluvial

Fluvial/Tidal

Tidal

IoW Outline

Fluvial

Fluvial/Tidal

Tidal

St Helens

Brighstone

Wroxall

Brading

Yarmouth

Bembridge

Wootton

West Wight

Ventnor

Cowes and East Cowes

The bay

Newport

Ryde

Chale

Niton

Rookley

Niton

Arreton

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

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Figure 13Tidal Flood Zone 3 Climate Change

Scale: 1:120,000 @ A3

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Potential Development Sites

IoW Outline

Isle of Wight SFRA MK2

Key:

Predicted 1 in 200 year Tidal Extents

Year 2010

Year 2045

Year 2080

Year 2115

St Helens

Brighstone

Wroxall

Brading

Yarmouth

Bembridge

Wootton

West Wight

Ventnor

Cowes and East Cowes

The bay

Newport

Ryde

Chale

Niton

Rookley

Niton

Arreton

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

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Figure 14Tidal Flood Zone 2 Climate Change

Scale: 1:120,000 @ A3

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Potential Development Sites

Isle of Wight SFRA MK2

IoW Outline

Key:

Predicted 1 in 1000 year Tidal Extents

Year 2010

Year 2045

Year 2080

Year 2115

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

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Isle of Wight SFRA MK2

Figure 15Areas of floodplain potentialysensitive to climate change

Scale: 1:120,000 @ A3

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Key:Fluvial floodplain areas potentially sensitive to climate change

IoW Outline

Fluvial Flood Zone 3

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

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Figure 16Soil HOST Classifications

Scale: 1:120,000 @ A3

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Key:

IoW Outline

SoilsHOST Classes

1

2

3

5

9

16

18

20

25

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

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Isle of Wight SFRA MK2

Figure 17Flood Defence Condition

Scale: 1:120,000 @ A3

November 2009

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IoW Outline

Key:

Potential Development Sites

Flood Defence Present

No Flood Defence Identified

Potential Exposure Risk

High

Medium

Low

Ryde

Newport

The bay

Cowes and East Cowes

Ventnor

West Wight

Wootton Seaview

Bembridge

Yarmouth

Brading

Wroxall

Brighstone

St Helens

Easte

rn Yar

River

Medin

a (Tid

al)

Scotche

lls Broo

k

Thorley Brook

Gurnard Luck

Lukely Brook

Shorwell StreamRive

r Medi

na

Merstone Stream

Weste

rn Ya

r (Tida

l)

Atherfield Brook

Ningwood

Lake (

Tidal)

Brook Stream

Newtown Brook

Clamerkin Brook

Barnsfield Stream

Caulb

ourne

Palm

ers Br

ook

Pan Stream

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Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty's Stationery Office. © Crown Copyright. AL100001776

25793-A21.mxd squij

Figure 18Qualitative Wind and Wave Exposure Risk

Scale: 1:120,000 @ A3

November 2009

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Potential Development Sites

IoW Outline

Main Rivers

Isle of Wight SFRA MK2

Key: