Flood Risk Assessment Severnside Farm,

Date 15/12/2016 Prepared by Abi Hall Prepared by Abi Hall..………………………….. 15/12/2016 Date ……………………………………..

Version ……………………………………..1.0

Reviewed by Katherine Teakle.……………….. 15/12/2016 Date ……………………………………..

Version ……………………………………..1.0

i Table of Contents

1.0 INTRODUCTION ...... 1 1.1 Introduction ...... 1 1.2 Location ...... 1 1.3 Aims and Objectives...... 3 2.0 DEVELOPMENT DESCRIPTION AND BACKGROUND...... 4 2.1 Development Site Description...... 4 2.2 National Planning Policy Framework (NPPF) ...... 4 2.3 Development Site Background...... 5 3.0 FLOOD HAZARD DEFINITION AND PROBABILITY ...... 10 3.1 Fluvial and Tidal Sources ...... 10 4.0 CONCLUSION ...... 16 5.0 REFERENCES ...... 18 APPENDICES...... 19 APPENDIX A...... 20 APPENDIX B...... 24

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iii Flood Risk Assessment Severnside Farm, Gloucester

1.0 Introduction

1.1 Introduction 1.1.1 Katherine Colby Hydrologists Limited has been commissioned by Mr. Gorman to undertake a Flood Risk Assessment of Severnside Farm, Gloucester. A Flood Risk Assessment is required to support a Retrospective Planning Application for the development of an agricultural barn building.

1.1.2 The barn building has already been built on the east of the site, on the north side of an access road; there is also a farmhouse in this location, situated south of the barn. The site is accessed by a private drive from Longhorn Avenue.

1.2 Location 1.2.1 The site is located in Gloucester, which is south of Worcester, north east of , north west of Oxford and south east of Hereford (Figure 1).

1.2.2 Specifically, the site is located to the north-west of Gloucester, south of the A40 (Figure 2). To the south-east of the site is St Oswalds Retail Park and to the south of the site is the Cattle Market housing development. The runs along the western boundary of the site and the River Twyver runs along the southern boundary of the site.

1.2.3 A National Grid Reference for the site is 382800, 219760 and a post code is GL2 9NF.

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Figure 1: Site location (Nigel J Teale, 2016)

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1.3 Aims and Objectives 1.3.1 This report aims to provide an assessment of flood risk in line with National Planning Policy Framework for the purpose of supporting a Retrospective Planning Application for an agricultural barn building.

1.3.2 The objectives of this report are to review available information about geology, topography and hydrology local to the site. Then to assess the risk of flooding from fluvial and tidal sources based on this information and consultation with relevant authorities. Recommendations will be made, where necessary, to manage and/or mitigate any flood risks identified.

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2.0 Development Description and Background 2.0.1 The following section provides a description of the site layout (Appendix A). Background information about topography, geology and hydrology of the site and surrounding area are also detailed to provide a baseline to the Flood Risk Assessment.

2.1 Development Site Description 2.1.1 The site is currently an agricultural holding; it is occupied by agricultural buildings to the west and a farmhouse and barn to the east.

2.1.2 The development is a corrugated metal barn with an area of 244.25m2 located on the eastern part of the site. There is existing vehicular access via a private driveway from Longhorn Avenue. The barn is built on a raised area on the north side of an access road, which is also raised. The agricultural barn has been built to the north of the existing farmhouse.

2.1.3 The majority of the land at Severnside Farm is currently rough grassland with trees and hedgerows creating boundaries between fields and as a site boundary. The land is used for grazing in places; however some of the land is marshy.

2.1.4 To the north of the site is the A40, the Gloucester Northern Bypass. St Oswalds Retail Park and the Cattle Market housing development are located to the south of the site. The site is located with the River Severn flowing along the western boundary and the River Twyver flowing along the southern boundary. The confluence of these two rivers occurs at the south west corner of the site.

2.1.5 The proposed development is for agricultural use. Therefore, in line with the Planning Practice Guidance to the National Planning Policy Framework, it is considered that the building would be classified as “Less Vulnerable”, based on the flood risk vulnerability classification outlined in Table 2 of the National Planning Policy Framework (Communities and Local Government, 2014).

2.2 National Planning Policy Framework (NPPF) 2.2.1 Sequential and Exception Tests 2.2.2 The land at Severnside Farm, Gloucester is shown to be located within Flood Zone 3 on the Environment Agency’s Indicative Flood Zone Map (Figure 5). The Environment Agency’s Indicative Flood Zone Map illustrates the risk of flooding without flood defences in place.

2.2.3 Table 3 in NPPF provides a matrix of “Flood Risk Vulnerability and Flood Zone ‘Compatibility’” (Communities and Local Government, 2012). The site is located in Flood Zone 3. As discussed above the Flood Risk Vulnerability Classification of the development is “Less Vulnerable”. Therefore, based on Table 3 in NPPF, the proposed development is considered as “appropriate” for development in Flood Zone 3.

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2.3 Development Site Background 2.3.1 Topography 2.3.2 The site is currently an agricultural holding; it is occupied by agricultural buildings to the west and a farmhouse and barn to the east. The agricultural barn building in question is located on the east part of the site, near the farmhouse and has already been developed.

2.3.3 A topographic survey of the site Severnside Farm, Gloucester has been undertaken by Ruxton Surveys in October 2016; this has been reviewed and is discussed below (Figure 2).

2.3.4 The barn is built on the north side of an access road at the site, on an area that is raised above surrounding site levels. At the barn elevations range from 11.13mAOD to 10.87mAOD and the barn has a floor level of 10.92mAOD (Figure 2). There is a low point of 10.55mAOD on the raised area, to the north west of the barn building (Figure 2).

2.3.5 Land levels decrease relatively steeply down from the raised area, upon which the barn and the access road are located, with the difference in elevation between the top edge of the raised area and the base of the raised area in the vicinity of the barn being between about 1.86m and 2.01m on the north side of the barn and between about 1.65m and 2.24m on the south side of the access road (Figure 2).

2.3.6 The high point in the vicinity of the building is on the access road, south of the barn, where elevations rise to 11.17mAOD (Figure 2). There is also an area of raised land west of the barn where elevations rise to 11.42mAOD (Figure 2).

2.3.7 There is an overall increase in elevations along the access road to the site from east to west travelling into the site; elevations increase along the track from approximately 11.00mAOD at the entrance to the site, rising to 11.13mAOD near the barn (Figure 2). The access road is described as a “stone track” in the topographic survey and as such it is an uneven surface, with a low of 10.83mAOD (Figure 2). It is noted that this low elevation occurs on the north side of the access road and on the south side levels of 10.92mAOD and 10.95mAOD are recorded in this location on the access road (Figure 2).

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Figure 2: Topographic Survey (Nigel Teal, 2016)

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2.3.8 Geology 2.3.9 Available mapping for the area of interest was reviewed, namely the British Geological Survey (1975) Gloucester, and Sheet 234, Solid and Drift Geology 1:50,000. This map indicates that the site is underlain by “Estuarine Alluvium” (British Geological Survey, 1975).

2.3.10 The Environment Agency in their letter dated 18th November 2016 (Appendix B) stated that there are “no groundwater level observational boreholes in this location”.

2.3.11 Hydrology 2.3.12 The River Severn flows in an overall north to south direction around the west side of Gloucester. The River Severn near the site meanders through its floodplain and has been heavily affected by anthropogenic changes through this part of the catchment.

2.3.13 The River Severn, upstream of Gloucester near Maisemore, splits into two channels, referred to as the East and West Channels. It is the East Channel that passes the site, the confluence of the East and West Channels occurs downstream of the site.

2.3.14 The River Twyver flows in an overall east to west direction through Gloucester. It enters the site on the eastern boundary, flowing west along Severnside Farms’ southern boundary. It then joins the River Severn with its confluence being in the south west corner of the site.

2.3.15 The extent of tidal influence on the River Severn is generally considered to be Hawbridge, which is north east of Gloucester and south west of Tewkesbury. In the Level 2 SFRA it is stated that “Gloucester itself is considered the limit of tidal dominance on the River Severn, with Llanthony and Maisemore weirs generally identified as marking the boundary between fluvial and tidal interaction” (Halcrow Group Limited, October 2011). Within this Flood Risk Assessment the site is considered to be within an area affected by tidal influences.

2.3.16 Alney Island is located downstream of Upper Parting, which is where the River Severn splits into two branches known as East and West Channels. Alney Island is located between these two channels of the River Severn and much of the lower part, downstream of the A46, is a Local Nature Reserve (http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=alney&ID=7, 18/05/14). Natural England describes Alney Island Nature Reserve as a “Mainly neutral wet grassland and flood meadows with associated broadleaf trees. The land is managed through hay cutting and grazing with cattle” (http://www.lnr.naturalengland.org.uk/Special/lnr/lnr_details.asp?C=0&N=alney&ID=7, 18/05/14

2.3.17 History of Flooding 2.3.18 The Level 2 SFRA states that Gloucester City experienced “…widespread flooding” in January 1939, March 1947, July 1968, December 1981, January 1990, December 2000 and Summer 2007 (Halcrow Group Ltd., October 2011).

2.3.19 The Environment Agency has been contacted regarding available information on flooding; including occurrences of previous flooding that has affected the site. The Environment Agency has provided a recorded flood outline centered over the site in their correspondence dated 18th November 2016, as seen in Figure 4.

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2.3.20 The Severn Tidal Tributaries Catchment Flood Management Plan (STTCFMP) describes the Summer 2007 floods as occurring “…throughout the catchment” and as “The most significant event in recent years” (Environment Agency, December 2009). The STTCFMP stated that the event was caused by “…a period of exceptional rainfall” (Environment Agency, December 2009). The County Council Preliminary Flood Risk Assessment (PFRA) states that most of the “…detailed flood incident records” are from the Summer 2007 floods, because of the “…scale and impact” of this event (Gloucestershire County Council, June 2011).

2.3.21 The PFRA describes the Summer 2007 event and how it affected Gloucestershire. The PFRA describes a “…relatively dry spring” followed by a summer that “…was one of the wettest on record” (Gloucestershire County Council, June 2011). There was some flooding at the end of June due to heavy rainfall, which caused surface water flooding and elevated water levels in watercourses (Gloucestershire County Council, June 2011). Then in July there was very heavy rainfall including “…on the 20th July the equivalent of 2 months’ rain [falling] in 14 hours” (Gloucestershire County Council, June 2011). The consequences of this summer flood event included flooded businesses and homes, loss of electricity, loss of drinking water, stranded motorists and commuters at Gloucester train station (Gloucestershire County Council, June 2011).

2.3.22 In Gloucester City centre during the Summer 2007 floods there was “significant flooding”, attributed to “…overtopping of the watercourses and surcharging of the surface water drainage [system]” (Gloucestershire County Council, June 2011).

2.3.23 The western side of Gloucester City, which the site is located in, is described in the PFRA as being one of the areas perceived to have the highest surface water flood risk (Gloucestershire County Council, June 2011). However, the PFRA goes on to explain that in actuality the main cause of this flooding is considered to be surcharged watercourse culverts that are of insufficient capacity to cope with the “…thousands of surface water outfalls” and high river water levels (Gloucestershire County Council, June 2011).

2.3.24 The Level 1 SFRA highlights that the July 1968 event affected the River Twyver (Halcrow Group Limited, September 2008). With further events affecting the Twyver in 1997, 2001 and 2003 attributed to the insufficient capacity of drains and sewers within Gloucester.

2.3.25 Information provided in the Level 2 SFRA Report indicates that historic occurrences of flooding were mainly due to fluvial sources, namely the River Severn, but also the Sud Brook, the River Twyver and in 2007 smaller watercourses (Halcrow Group Ltd., October 2011).

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Figure 3: Environment Agency provided a Recorded Flood Event Outline. Contains Environment Agency information © Environment Agency and database right

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3.0 Flood Hazard Definition and Probability 3.0.1 In the following section the flood hazard to the site is defined and the probability of flooding from potential fluvial and tidal sources is considered following consultation with the relevant authority and review of available information.

3.1 Fluvial and Tidal Sources 3.1.1 Introduction 3.1.2 The site is located on the left bank of the East Channel of the River Severn. The River Severn is considered to be affected by tidal influences in the vicinity of the site. The River Twyver flows along the southern boundary of the site.

3.1.3 Environment Agency Data 3.1.4 Modelled Flood Outlines showing 1% Fluvial 50% Tidal and 0.1% Fluvial 50% Tidal indicate that the site is located within the 1% Fluvial 50% Tidal flood extent (Figure 4).

3.1.5 Table 1 below shows the historic recorded flood events for the area, along with the source and cause of flooding if known. The Environment Agency did not have flood levels for these events and they were not provided. The table shows that in all but the 1992 event exceedance of channel capacity was the cause of flooding; the 1992 event is unknown. A map of the recorded flood outline can be seen in Figure 3, it shows the entire site being flooded to some extent during the below events.

Flood Date Source of Flooding Cause of Flooding March 1947 Fluvial Channel capacity exceeded (no raised defences) December 1992 Fluvial Unknown November 2000 Fluvial Channel capacity exceeded (no raised defences) January 1990 Fluvial Channel capacity exceeded (no raised defences) July 2007 Fluvial Channel capacity exceeded (no raised defences) February 1990 Fluvial Channel capacity exceeded (no raised defences) Table 1: Historic flood events in the vicinity of the site. (Environment Agency, 2016) Contains Environment Agency information © Environment Agency and database right

3.1.6 Environment Agency flood water levels for the River Severn in the vicinity of the proposed development are provided in the table below (Table 2 and Appendix B). The Environment Agency advised that these levels are from their 2007 River Severn Tidal 1D ISIS hydraulic model, from which there are flood water levels available for a range of scenarios.

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Flood Water Level (mAOD) 1 in 5 1 in 5 1 in 5 1 in 5 1 in 5 1 in 75 1 in 1 in 100 1 in 1 in year year year year year year 100 year 200 1000 Fluvial, Fluvial, Fluvial, Fluvial, Fluvial, Fluvial, year Fluvial, year year Cross 75 100 200 200 year 1000 2 year Fluvial, 2 year Fluvial, Fluvial, Section year year year Tidal year Tidal 2 year Tidal 2 year 2 year Tidal Tidal Tidal (plus Tidal Tidal (plus Tidal Tidal Climate Climate Change) Change) WESTUS 10.39 10.40 10.43 10.72 10.49 10.73 10.77 11.08 10.87 11.45 PUMPUS 10.47 10.48 10.50 10.83 10.56 10.94 11.00 11.36 11.12 11.84 LCR18 10.42 10.43 10.45 10.74 10.51 10.76 10.80 11.09 10.89 11.41 LCR16 10.55 10.56 10.57 10.88 10.61 11.07 11.13 11.49 11.25 11.95 LCR12 10.57 10.58 10.59 10.93 10.64 11.14 11.20 11.55 11.31 12.00 LCR09 10.58 10.59 10.61 10.93 10.65 11.13 11.19 11.59 11.33 12.11 Table 2: Environment Agency Flood Water Levels for the River Severn (Appendix B) Contains Environment Agency information © Environment Agency and database right

3.1.7 A review of the flood water levels provided by the Environment Agency for this part of the River Severn indicates that the Fluvial dominant scenarios produce the worst case design flood water levels.

3.1.8 The 1 in 100 year Fluvial, 2 year Tidal (plus Climate Change) flood water level at this location is 11.09mAOD at node reference LCR18 (Figure 5), and the 1 in 1000 year Fluvial, 2 year Tidal flood water level at this location is 11.41mAOD at node reference LCR18 (Figure 7). These are the flood water levels referred to when assessing the risk of flooding to the site from tidal and fluvial sources.

3.1.9 At the barn elevations range from 11.13mAOD to 10.87mAOD and the barn has a floor level of 10.92mAOD (Figure 2).

3.1.10 The elevations at the barn are between 0.04m above and 0.22m below the 1 in 100 year Fluvial, 2 year Tidal (plus Climate Change) flood water level at this location, i.e. there would be up to 0.22m depth of flooding at the barn during this design event.

3.1.11 There would be between 0.28m and 0.54m depth of flooding during a 1 in 1000 year Fluvial, 2 year Tidal flood.

3.1.12 With a floor level of the barn at 10.92mAOD the depth of flooding during a 1 in 100 year Fluvial, 2 year Tidal (plus Climate Change) flood water level (11.09mAOD) there would be 0.17m of flooding; during a 1 in 1000 year Fluvial, 2 year Tidal flood event (11.41mAOD) there would be 0.49m depth of flooding.

3.1.13 Along the access road to the site there is an overall increase in elevations from east to west travelling into the site; elevations increase along the track from approximately 11.00mAOD at the entrance to the site, rising to 11.13mAOD near the barn (Figure 2). The access road is described as a “stone track” in the topographic survey and as such it is an uneven surface, with a low of 10.83mAOD (Figure 2). It is noted that this low elevation occurs on the north side of the access road and on the south side levels of 10.92mAOD and 10.95mAOD are recorded in this location on the access road (Figure 2).

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3.1.14 During a 1 in 100 year Fluvial, 2 year Tidal (plus Climate Change) flood event there would be 0.26m depth of flooding at the low point on the access road. At the maximum elevation on the access road there would be no flooding and the access road would be 0.04m above the flood water level during this design event.

3.1.15 During a 1 in 1000 year Fluvial, 2 year Tidal (plus Climate Change) flood event there would be 0.58m depth of flooding at the low point on the access road. At the maximum elevation on the access road there would be 0.28m depth of flooding during this design event.

3.1.16 Flood Defences 3.1.17 The Environment Agency was consulted regarding flood defences in the vicinity of the site. Their response, dated 18th November 2016, states that: “There are no formal Environment Agency owned flood defences protecting this site. The Environment Agency do not hold detailed records relating to privately owned defences at this location. ” (Appendix B).

3.1.18 Therefore, for the purpose of this Flood Risk Assessment, the site is considered to be undefended.

3.1.19 Access and Egress 3.1.20 There is vehicular access to the site from Longhorn Lane.

3.1.21 Figures 3 and 4 illustrate historic and modelled flood extents at, and in the vicinity of, the site.

3.1.22 Figure 3 shows that the site and surrounds has been flooded historically. Figure 4 shows that the site is at risk of flooding from 1% fluvial, 50% tidal event and that access and egress to the site would pass through this flood extent and the flood extent of the 0.1% fluvial, 50% Tidal flood. It is noted that much of the St Oswalds retail park located south of the site is shown in Figure 4 as an isolated island, located outside of the extent of flooding.

3.1.23 There is an overall increase in elevations along the access road to the site from east to west travelling into the site; elevations increase along the track from approximately 11.00mAOD at the entrance to the site, rising to 11.13mAOD near the barn (Figure 2). The access road is described as a “stone track” in the topographic survey and as such it is an uneven surface, with a low of 10.83mAOD (Figure 2). It is noted that this low elevation occurs on the north side of the access road and on the south side levels of 10.92mAOD and 10.95mAOD are recorded in this location on the access road (Figure 2).

3.1.24 There would be between 0.26m depth of flooding and no flooding during the 1 in 100 year Fluvial, 2 year Tidal (plus Climate Change) flood event. During a 1 in 1000 year Fluvial, 2 year Tidal (plus Climate Change) flood event there would be 0.58m depth of flooding at the low point on the access road. It is noted that this low elevation occurs on the north side of the access road and on the south side levels of 10.92mAOD and 10.95mAOD are recorded in this location on the access road (Figure 2), which would give a flood depth of m. At the maximum elevation on the access road there would be 0.28m depth of flooding during this design event.

3.1.25 It is noted that as an agricultural barn the building would not require access 24 hours a day.

3.1.26 Flood Management and Mitigation Measures 3.1.27 The floor level of the current building is set at 10.92mAOD. With a floor level of the barn at 10.92mAOD the depth of flooding during a 1 in 100 year Fluvial, 2 year Tidal (plus Climate

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Change) flood water level (11.09mAOD) there would be 0.17m of flooding; during a 1 in 1000 year Fluvial, 2 year Tidal flood event (11.41mAOD) there would be 0.49m depth of flooding.

3.1.28 It is recommended that the site user be registered for flood warnings with the Environment Agency so they can take appropriate action.

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Figure 4: Environment Agency Modelled Flood Extent Map. Contains Environment Agency information © Environment Agency and database right

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Figure 5: Environment Agency Node Location Map. Contains Environment Agency information © Environment Agency and database right

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4.0 Conclusion 4.0.1 A Flood Risk Assessment has been undertaken to support a Retrospective Planning Application for an agricultural building at Severnside Farm, Gloucester.

4.0.2 The site is located on the left bank of the East Channel of the River Severn. The River Twyver flows along the southern boundary of the site. The extent of tidal influence on the River Severn is generally considered to be Hawbridge, which is north east of Gloucester and south west of Tewkesbury. However, in the Level 2 SFRA it is stated that “Gloucester itself is considered the limit of tidal dominance on the River Severn, with Llanthony and Maisemore weirs generally identified as marking the boundary between fluvial and tidal interaction” (Halcrow Group Limited, October 2011). Within this Flood Risk Assessment the site is considered to be within an area affected by tidal influences.

4.0.3 The Environment Agency flood water levels for the River Severn were requested and provided for a range of events including the 1 in 5 year Fluvial, 200 year Tidal (plus Climate Change), 1 in 5 year Fluvial, 1000 year Tidal, 1 in 100 year Fluvial, 2 year Tidal (plus Climate Change) and the 1 in 1000 year Fluvial, 2 year Tidal events. The flood water levels provided were from the Environment Agency’s 2007 River Severn Tidal 1D ISIS hydraulic model.

4.0.4 A comparison of Environment Agency flood water levels against a site specific topographic survey has been undertaken. The corrugated metal barn is located in the eastern part of the site. At the barn elevations range from 11.13mAOD to 10.87mAOD and the barn has a floor level of 10.92mAOD (Figure 2).

4.0.5 A comparison of elevations at the barn with Environment Agency flood water levels identified that there would be up to 0.22m depth of flooding at the barn during the 1 in 100 year Fluvial, 2 year Tidal (plus Climate Change) design event. There would also be between 0.28m and 0.54m depth of flooding during a 1 in 1000 year Fluvial, 2 year Tidal flood.

4.0.6 With a floor level of the barn at 10.92mAOD the depth of flooding during a 1 in 100 year Fluvial, 2 year Tidal (plus Climate Change) event there would be 0.17m of flooding; during a 1 in 1000 year Fluvial, 2 year Tidal flood event there would be 0.49m depth of flooding.

4.0.7 It is recommended that the site user be registered for flood warnings with the Environment Agency so they can take appropriate action.

4.0.8 There is vehicular access to the site from Longhorn Lane. Figures 3 and 4 illustrate historic and modelled flood extents at, and in the vicinity of, the site. Figure 3 shows that the site and surrounds has been flooded historically. Figure 4 shows that the site is at risk of flooding from 1% fluvial, 50% tidal event and that access and egress to the site would pass through this flood extent and the flood extent of the 0.1% fluvial, 50% Tidal flood. It is noted that much of the St Oswalds retail park located south of the site is shown in Figure 4 as an isolated island, located outside of the extent of flooding.

4.0.9 There is an overall increase in elevations along the access road to the site from east to west travelling into the site; elevations increase along the track from approximately 11.00mAOD at the entrance to the site, rising to 11.13mAOD near the barn (Figure 2). The access road is described as a “stone track” in the topographic survey and as such it is an uneven surface, with a low of 10.83mAOD (Figure 2). It is noted that this low elevation occurs on the north side

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of the access road and on the south side levels of 10.92mAOD and 10.95mAOD are recorded in this location on the access road (Figure 2).

4.0.10 There would be between 0.26m depth of flooding and no flooding during the 1 in 100 year Fluvial, 2 year Tidal (plus Climate Change) flood event. During a 1 in 1000 year Fluvial, 2 year Tidal (plus Climate Change) flood event there would be 0.58m depth of flooding at the low point on the access road. It is noted that this low elevation occurs on the north side of the access road and on the south side levels of 10.92mAOD and 10.95mAOD are recorded in this location on the access road (Figure 2), which would give a flood depth of m. At the maximum elevation on the access road there would be 0.28m depth of flooding during this design event.

4.0.11 It is noted that as an agricultural barn the building would not require access 24 hours a day.

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5.0 References

British Geological Survey, 1975. Gloucester. England and Wales Sheet 234. Solid and Drift Geology. 1:50,000 (Keyworth, Nottingham, British Geological Survey).

Capita Symonds, January 2013, Gloucester, Cheltenham and Tewkesbury JCS: Strategic Flood Risk Assessment - Level 2 - Additional Assessments Final

Communities and Local Government, March 2014, Planning Practice Guidance to the National Planning Policy Framework

Environment Agency, December 2009, Severn Tidal Tributaries Catchment Flood Management Plan Summary Report

Environment Agency, December 20092, River Severn Catchment Flood Management Plan Summary Report

Gloucestershire County Council, June 2011, Preliminary Flood Risk Assessment

Halcrow Group Limited, September 2008, Strategic Flood Risk Assessment for Local Development Framework Level 1 Volume 1 – Final

Halcrow Group Limited, October 2011, Strategic Flood Risk Assessment for Local Development Framework Level 2 Final Report

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Appendices

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Appendix A Site Layout

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Appendix B Consultation Responses

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