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Transcript of NGR: Postcode: © Crown Copyright 2014. All rights reserved. Image reproduced with permission of...
NGR:
Postcode:
© Crown Copyright 2014. All rights reserved.Image reproduced with permission of Ordnance Survey and Ordnance Survey of Northern Ireland
Site Location (OS map)
Road/Watercourse
Development site outline
Legend
Proposed Site Layout / Illustrative Masterplan
Site Topography
Legend
Insert height range
Insert height range
Insert height range
Insert height range
Insert height range
Insert height range
LegendHeight (m AOD)
Optional legend
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
FZ3 (>1 in 100/200 AEP)
FZ2 (1 in 100/200 to 1 in 1,000 AEP)
FZ1 (<1 in 1,000 AEP)
Flood defencesAreas benefiting from defences
Main River
Legend
EA - Flood Map for Planning (Rivers & Sea)
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
>1 in 100/200 AEP
1 in 100/200 to 1 in 1,000 AEP
<1 in 1,000 AEP
Flood defencesAreas benefiting from flood defences
Main River
Legend
NRW - Flood Map
Crown Copyright and database rights 2011Ordnance Survey 100017916
Zone C1 (Significant infrastructure present)
Zone C2 (Without significant infrastructure)
Zone B (Known to have flooded in the past)
Zone A (Little/no risk of fluvial or tidal/coastal flooding)
Legend
Welsh Government – Development Advice Map
Node point
Main River
Legend
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
EA - River Model Nodes
Node point
Main River
Legend
Natural Resources Wales copyright and database rights 2013© Ordnance Survey Crown copyright. All rights reservedNatural Resources Wales, 100019741, 2013
NRW - River Model Nodes
<asset ref 1>
<asset ref 2>
Xx
Xx
Xx
<asset ref n>
Main River
Legend
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
EA - Flood Defence Assets
<asset ref 1>
<asset ref 2>
Xx
Xx
Xx
<asset ref n>
Main River
Legend
NRW - Flood Defence Assets
Natural Resources Wales copyright and database rights 2013© Ordnance Survey Crown copyright. All rights reservedNatural Resources Wales, 100019741, 2013
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
<Insert event date>
<Insert event date>
Xx
Xx
Xx
Insert event date>
Main River
Legend
EA – Historical Flooding Map
<Insert event date>
<Insert event date>
Xx
Xx
Xx
Insert event date>
Main River
Legend
NRW – Historical Flooding Map
Natural Resources Wales copyright and database rights 2013© Ordnance Survey Crown copyright. All rights reservedNatural Resources Wales, 100019741, 2013
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
Maximum extent of flooding
Legend
EA – Flooding from Reservoirs Map (Extent)
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
EA – Flooding from Reservoirs Map (Depth)
Legend
Over 900 mm
300 to 900 mm
Below 300 mm
Depth of flooding
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
EA – Flooding from Reservoirs Map (Speed)
Legend
Over 2 m/s
0.5 to 2.0 m/s
< 0.5 m/s
Speed of flooding
© Crown Copyright 2014. All rights reserved. Licence number 100047514Derived from 1:50 000 scale BGS Digital Data, British Geological Survey - NERC
LegendSusceptibility to flooding from groundwater
Significant
Moderate
Low
BGS – Groundwater Flooding Hazard Map
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
Flooding Warning Area
Flood Alert Area
Legend
EA – Flood Warning Map
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
Legend
Risk of flooding from surface water
High (>1 in 30 AEP)
Medium (1 in 100 to 1 in 30 AEP)
Low (1 in 1,000 to 1 in 100 AEP)
Very Low (< 1 in 1,000 AEP)
EA – Risk of Flooding from Surface Water Map
Legend
Risk of flooding from surface water
High (>1 in 30 AEP)
Medium (1 in 100 to 1 in 30 AEP)
Low (1 in 1,000 to 1 in 100 AEP)
Very Low (< 1 in 1,000 AEP)
NRW – Risk of Flooding from Surface Water Map
Natural Resources Wales copyright and database rights 2013© Ordnance Survey Crown copyright. All rights reservedNatural Resources Wales, 100019741, 2013
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
Legend
Over 0.25 m/s
Less than 0.35 m/s
Direction of water
Surface water velocity
EA – Surface Water FloodingHigh Chance of Occurrence
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
Legend
Over 0.25 m/s
Less than 0.35 m/s
Direction of water
Surface water velocity
EA – Surface Water FloodingMedium Chance of Occurrence
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
Legend
Over 0.25 m/s
Less than 0.25 m/s
Direction of water
Surface water velocity
EA – Surface Water FloodingLow Chance of Occurrence
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
Legend
Over 900 mm
300 to 900 mm
Below 300 mm
Surface water depth
EA – Surface Water DepthHigh Chance of Occurrence
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
Legend
Over 900 mm
300 to 900 mm
Below 300 mm
Surface water depth
EA – Surface Water DepthMedium Chance of Occurrence
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
Legend
Over 900 mm
300 to 900 mm
Below 300 mm
Surface water depth
EA – Surface Water DepthLow Chance of Occurrence
Soilscapes – Soil Type
LegendInsert soil type
Insert soil type
Insert soil type
Insert soil type
Insert soil type
Insert soil type
Legend
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
Inner zone (Zone 1)
Inner zone - subsurface activity only (Zone 1c)
Outer zone (Zone 2)
Outer zone – subsurface activity only (Zone 2c)
Total catchment (Zone 3)
Total catchment – subsurface activity only (Zone 3c)
Special interest (Zone 4)
Legend
EA - Groundwater Source Protection Zones
Description (from EA web page)
The shape and size of a zone depends on the condition of the ground, how the groundwater is removed, and other environmental factors. When we define a zone we find out how the groundwater behaves in that area, what constructions there are to get the water out into the public water supply, and the process for doing this. From this we can develop a model of the groundwater environment on which to define the zones.
Inner zone (Zone 1) - Defined as the 50 day travel time from any point below the water table to the source. This zone has a minimum radius of 50 metresOuter zone (Zone 2) - Defined by a 400 day travel time from a point below the water table. The previous methodology gave an option to define SPZ2 as the minimum recharge area required to support 25 per cent of the protected yield. This option is no longer available in defining new SPZs and instead this zone has a minimum radius of 250 or 500 metres around the source, depending on the size of the abstractionTotal catchment (Zone 3) - Defined as the area around a source within which all groundwater recharge is presumed to be discharged at the source. In confined aquifers, the source catchment may be displaced some distance from the source. For heavily exploited aquifers, the final Source Catchment Protection Zone can be defined as the whole aquifer recharge area where the ratio of groundwater abstraction to aquifer recharge (average recharge multiplied by outcrop area) is >0.75. Special interest (Zone 4) - A fourth zone SPZ4 or ‘Zone of Special Interest’ was previously defined for some sources. SPZ4 usually represented a surface water catchment which drains into the aquifer feeding the groundwater supply (i.e. catchment draining to a disappearing stream). In the future this zone will be incorporated into one of the other zones, SPZ 1, 2 or 3, whichever is appropriate in the particular case, or become a safeguard zone
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
Major Aquifer High
Major Aquifer Intermediate
Major Aquifer Low
Minor Aquifer High
Minor Aquifer Intermediate
Minor Aquifer Low
Legend
EA - Groundwater Vulnerability Zones
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
Principal
Secondary A
Secondary B
Secondary (Undifferentiated)
Unknown (lakes and landslips)
Legend
EA Aquifer Maps - Superficial Deposits
Description (from EA web page)
Superficial (Drift) - permeable unconsolidated (loose) deposits. For example, sands and gravels.
Principal Aquifers: These are layers of rock or drift deposits that have high intergranular and/or fracture permeability - meaning they usually provide a high level of water storage. They may support water supply and/or river base flow on a strategic scale. In most cases, principal aquifers are aquifers previously designated as major aquifer. Secondary Aquifers: These include a wide range of rock layers or drift deposits with an equally wide range of water permeability and storage. Secondary aquifers are subdivided into: Secondary A - permeable layers capable of supporting water supplies at a local rather than strategic scale, and in some cases forming an important source of base flow to rivers. These are generally aquifers formerly classified as minor aquifers; Secondary B - predominantly lower permeability layers which may store and yield limited amounts of groundwater due to localised features such as fissures, thin permeable horizons and weathering. These are generally the water-bearing parts of the former non-aquifers; Secondary Undifferentiated - Assigned where the EA has been unable to attribute either category A or B to a rock type. In most cases, due to the variable characteristics of the rock type.
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
Principal
Secondary A
Secondary B
Secondary (Undifferentiated)
Legend
EA Aquifer Maps – Bedrock Designation
Description (from EA web page)
Bedrock - solid permeable formations e.g. sandstone, chalk and limestone.
Principal Aquifers: These are layers of rock or drift deposits that have high intergranular and/or fracture permeability - meaning they usually provide a high level of water storage. They may support water supply and/or river base flow on a strategic scale. In most cases, principal aquifers are aquifers previously designated as major aquifer. Secondary Aquifers: These include a wide range of rock layers or drift deposits with an equally wide range of water permeability and storage. Secondary aquifers are subdivided into: Secondary A - permeable layers capable of supporting water supplies at a local rather than strategic scale, and in some cases forming an important source of base flow to rivers. These are generally aquifers formerly classified as minor aquifers; Secondary B - predominantly lower permeability layers which may store and yield limited amounts of groundwater due to localised features such as fissures, thin permeable horizons and weathering. These are generally the water-bearing parts of the former non-aquifers; Secondary Undifferentiated - Assigned where the EA has been unable to attribute either category A or B to a rock type. In most cases, due to the variable characteristics of the rock type.
© Environment Agency copyright and database rights 2014© Ordnance Survey Crown copyright. All rights reservedEnvironment Agency, 100026380, 2014
High
Good
Moderate
Poor
Bad
Not yet assessed
Legend
EA – River Basin Management PlansRivers – Current Ecological Quality