Presentation is loading. Please wait.

Presentation is loading. Please wait.

NGR: Postcode: © Crown Copyright 2014. All rights reserved. Image reproduced with permission of Ordnance Survey and Ordnance Survey of Northern Ireland.

Similar presentations


Presentation on theme: "NGR: Postcode: © Crown Copyright 2014. All rights reserved. Image reproduced with permission of Ordnance Survey and Ordnance Survey of Northern Ireland."— Presentation transcript:

1 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

2 Proposed Site Layout / Illustrative Masterplan

3 Site Topography Legend Insert height range Legend Height (m AOD) Optional legend

4 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment 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 defences Areas benefiting from defences Main River Legend EA - Flood Map for Planning (Rivers & Sea)

5 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment Agency, 100026380, 2014 >1 in 100/200 AEP 1 in 100/200 to 1 in 1,000 AEP <1 in 1,000 AEP Flood defences Areas benefiting from flood defences Main River Legend NRW - Flood Map

6 Crown Copyright and database rights 2011 Ordnance 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

7 Node point Main River Legend © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment Agency, 100026380, 2014 EA - River Model Nodes

8 Node point Main River Legend Natural Resources Wales copyright and database rights 2013 © Ordnance Survey Crown copyright. All rights reserved Natural Resources Wales, 100019741, 2013 NRW - River Model Nodes

9 Xx Main River Legend © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment Agency, 100026380, 2014 EA - Flood Defence Assets

10 Xx Main River Legend NRW - Flood Defence Assets Natural Resources Wales copyright and database rights 2013 © Ordnance Survey Crown copyright. All rights reserved Natural Resources Wales, 100019741, 2013

11 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment Agency, 100026380, 2014 Xx Insert event date> Main River Legend EA – Historical Flooding Map

12 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 reserved Natural Resources Wales, 100019741, 2013

13 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment Agency, 100026380, 2014 Maximum extent of flooding Legend EA – Flooding from Reservoirs Map (Extent)

14 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment Agency, 100026380, 2014 EA – Flooding from Reservoirs Map (Depth) Legend Over 900 mm 300 to 900 mm Below 300 mm Depth of flooding

15 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment 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

16 © Crown Copyright 2014. All rights reserved. Licence number 100047514 Derived from 1:50 000 scale BGS Digital Data, British Geological Survey - NERC Legend Susceptibility to flooding from groundwater Significant Moderate Low BGS – Groundwater Flooding Hazard Map

17 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment Agency, 100026380, 2014 Flooding Warning Area Flood Alert Area Legend EA – Flood Warning Map

18 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment 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

19 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 reserved Natural Resources Wales, 100019741, 2013

20 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment Agency, 100026380, 2014 Legend Over 0.25 m/s Less than 0.35 m/s Direction of water Surface water velocity EA – Surface Water Flooding High Chance of Occurrence

21 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment Agency, 100026380, 2014 Legend Over 0.25 m/s Less than 0.35 m/s Direction of water Surface water velocity EA – Surface Water Flooding Medium Chance of Occurrence

22 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment Agency, 100026380, 2014 Legend Over 0.25 m/s Less than 0.25 m/s Direction of water Surface water velocity EA – Surface Water Flooding Low Chance of Occurrence

23 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment Agency, 100026380, 2014 Legend Over 900 mm 300 to 900 mm Below 300 mm Surface water depth EA – Surface Water Depth High Chance of Occurrence

24 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment Agency, 100026380, 2014 Legend Over 900 mm 300 to 900 mm Below 300 mm Surface water depth EA – Surface Water Depth Medium Chance of Occurrence

25 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment Agency, 100026380, 2014 Legend Over 900 mm 300 to 900 mm Below 300 mm Surface water depth EA – Surface Water Depth Low Chance of Occurrence

26 Soilscapes – Soil Type Legend Insert soil type Legend

27 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment 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 metres Outer 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 abstraction Total 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

28 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment 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

29 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment 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.

30 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment 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.

31 © Environment Agency copyright and database rights 2014 © Ordnance Survey Crown copyright. All rights reserved Environment Agency, 100026380, 2014 High Good Moderate Poor Bad Not yet assessed Legend EA – River Basin Management Plans Rivers – Current Ecological Quality


Download ppt "NGR: Postcode: © Crown Copyright 2014. All rights reserved. Image reproduced with permission of Ordnance Survey and Ordnance Survey of Northern Ireland."

Similar presentations


Ads by Google