NORTH DEVON COUNCIL AND TORRIDGE DISTRICT COUNCIL – LEVEL 1 STRATEGIC FLOOD RISK ASSESSMENT (PART 2 – NDC DATA) DOCUMENT CONTROL SHEET

Client: NORTH DEVON COUNCIL/TORRIDGE DISTRICT COUNCIL

Project: STRATEGIC FLOOD RISK ASSESSMENT (Part 2)

Date: February 2009

Issue and Revision History Revision No. Date Issued Remarks February 2009 First Issue FOREWARD

This Strategic Flood Risk Assessment comprises of 3 Parts:

· Part 1 – Strategy Document · Part 2 – North Devon Council Data · Part 3 – Torridge District Council Data

Part 2 - Contents

1. General

2. Review of the main catchments

2.1 Barnstaple 2.2 Bishops Tawton 2.3 Braunton & Wrafton 2.4 Brayford 2.5 Chivenor 2.6 Chulmleigh 2.7 Combe Martin 2.8 Croyde 2.9 Fremington 2.10 Goodleigh 2.11 Hele, Ilfracombe 2.12 Ilfracombe Town 2.13 Landkey, Landkey Newland & Swimbridge Newland 2.14 Lynmouth & Lynton 2.15 Roundswell 2.16 South Molton 2.17 Swimbridge 2.18 Umberleigh 2.19 Witheridge 2.20 Yelland Quay

3. List of flooding incidents outside the main catchments North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

1. GENERAL

1.1 Flood Zone 1 All uses of land are appropriate in this zone with consideration of the effect of surface water discharge on the other zones. Proposed development within Flood Zone 1 with an area greater than 1 hectare will require a Flood Risk Assessment (FRA) focused on the management of surface water run-off. Development that increases the amount of impermeable surfaces can result in an increase in surface water run-off, which in turn can result in increased flood risk both on site and elsewhere within the catchment. For sites less than 1 hectare in Flood Zone 1, a formal FRA will not usually be required. However if there are any known drainage problems or the development will affect watercourses or flood defences a FRA may be required.

1.2 Flood Zone 2 & 3 In accordance with PPS25 development in this area should be avoided due to the high risk of flooding. See Part 1, 4.2. However, if development is proposed adjacent to or within Zones 2 & 3, the Planning Authority should apply the Sequential Test to demonstrate that there are no reasonably available sites with a lower probability of flooding appropriate to the type of development or land use proposed. See Annex D of PPS 25.

All of Flood Zone 3 shall be treated as Functional Floodplain unless stated otherwise.

If, following application of the Sequential Test it is not possible for the development to be located in zones of lower probability of flooding, the Exception Test should be applied. The Developer would be required to provide a Flood Risk Assessment. (see the planning section at www.environment-agency.gov.uk for further guidance).

1.3 Upstream Catchments Care must be taken in ensuring flows are not increased in the river catchments as in most cases increased flows will increase flooding downstream.

1.4 New Drainage Connections All new proposed connections to foul or surface water systems must have the consent of the sewer owner. The owner should confirm if there is adequate capacity in the downstream system to prevent flooding. For new connections to the surface water system the developer should provide technical justification on why a SuDs system has not been utilised.

1.5 Existing Watercourses Both the Environment Agency and the Council should be consulted regarding any proposed surface water discharge, alteration or piping of watercourses. The Council should be consulted if any proposed development is within 10 metres of a watercourse where flood plains have not been indicated on the Environment Agency flood maps. For new discharges to a watercourse the developer should provide technical justification on why a SuDs system has not been utilised. If the proposed discharge is greater than the geenfield run off rate then attenuation will be required.

1.6 Surface Water Management Surface water run-off should be controlled as near to its source as possible through a sustainable drainage approach to surface water management (SuDs). SuDs are an approach to managing surface water run-off which seeks to mimic natural drainage systems and retain water on or near the site as opposed to traditional drainage approaches which involve piping water off site as quickly as possible. SuDs involve a range of techniques including soakaways, infiltration trenches, permeable pavements, grassed swales, ponds and wetlands. SuDs offer significant advantages over North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

conventional piped drainage systems in reducing flood risk by attenuating the rate and quantity of surface water run-off from a site, promoting groundwater recharge, and improving water quality and amenity.

Support for the SUDS approach to managing surface water run-off is set out in paragraph 22 of Planning Policy Statement 1 (PPS): Delivering Sustainable Development and in more detail in Planning Policy Statement 25: Development and Flood Risk at Annex F. Paragraph F8 of the Annex notes that “Local Planning Authorities should ensure that their policies and decisions on applications support and complement Building Regulations on sustainable rainwater drainage”.

Approved Document Part H of the Building Regulations 2000 establishes a hierarchy for surface water disposal, which encourages a SuDs approach. Under Approved Document Part H the first option for surface water disposal should be the use of SuDs, which encourage infiltration e.g. soakaways or infiltration trenches. In all cases, it must be established that these options are feasible, can be adopted and properly maintained and would not lead to any other environmental problems. For example, using soakaways or other infiltration methods on contaminated land carries groundwater pollution risks and may not work in areas with a high water table. Where the intention is to dispose to soakaway, these should be shown to work through an appropriate assessment carried out under BRE Digest 365.

Flow balancing SuDs methods which involve the retention and controlled release of surface water from a site may be an option for some developments at a scale where uncontrolled surface water flows would otherwise exceed the local greenfield run off rate. Flow balancing should seek to achieve water quality and amenity benefits as well as managing flood risk.

Further information on SuDs can be found in annex F of PPS 25, the PPS25 Practice Guide, in the CIRIA C697 The SUDS Manual and the Interim Code of Practice for Sustainable Drainage Systems. The Interim Code of Practice provides advice on design, adoption and maintenance issues and a full overview of other technical guidance on SUDS. The Interim Code of Practice is available electronically on both the Environment Agency's web site at: www.environment-agency.gov.uk and CIRIA’s web site at: www.ciria.org.uk

Where it is intended that disposal is made to public sewer, the Water Company or its agents should confirm that there is adequate spare capacity in the existing system taking future development requirements into account.

1.7 Climate Change Tables B.1 and B.2 PPS 25 Annex B show recommended allowances for sea level rise and impacts on rainfall intensities, river flow, wave height and wind speed. The EA Flood Zone maps only include these allowances up to the date of the maps. Allowances still need to be added for the lifetime of the development when preparing flood risk assessments.

1.8 Public Sewers (South West Water) Information regarding public sewers has been obtained from previous Local Plans and from local knowledge. South West Water has refused access to the DG5 (properties susceptible to internal flooding) register and has not commented on drafts supplied to them.

1.9 Highway Drainage Devon County Council were consulted but were unable to provide any information. North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

Note:

For further advice visit the Environment Agency Standing Advice for England (www.environment-agency.gov.uk).

Flood defence data has been obtained from the Environment Agency National Flood and Coastal Defence Database and their scheme files.

All levels relate to Ordnance Datum at Newlyn. (mAOD) North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2. REVIEW OF THE MAIN CATCHMENTS

2.1 BARNSTAPLE

Area Description Barnstaple is situated on the tidal stretch of the River Taw where the River Yeo joins. The town has been split into four parts for convenience, these areas do not relate to parish or ward boundaries: -

a) Barnstaple (North West) - Pottington Business Park and the Pilton area lie to the north west between Bradiford Water and the River Yeo.

b) Barnstaple (Centre) - The main part of the town between the River Yeo and Victoria Road.

c) Barnstaple (East) – From Victoria Road to Whiddon Valley.

d) Barnstaple (South West) - Anchorwood and Seven Brethren Business Park which lies south of the River Taw.

Main Rivers River Taw, River Yeo, Coney Gut and Bradiford Water. (See Figure 1a).

Ordinary Watercourses Pilton Community College Playing Field watercourse The Mill leat rear of Carrington Terrace Bradiford Water (non-main river stretch)

Flood Storage Areas and Flood Zones The known flood storage areas in the Barnstaple area are Portmarsh Field (Coney Gut), Pilton Park (River Yeo), Bradiford (Bradiford Water) and at the head of the storm overflow tunnel at Newport (Coney Gut). (See Figure 1a). Pilton Park provides a flood storage area for the River Yeo. When levels permit, water returns to the river via a flap valve on the western side of the park. The flow along the Coney Gut is controlled by a sluice gate and flood storage area at Eastern Avenue. During heavy rainfall water flows over the weir upstream of the sluice gate and flows through a tunnel under Newport to discharge into the River Taw at Rock Park. Portmarsh Field acts as a flood storage area when flows downstream of the sluice gate are retained during tide locking. The Bradiford Water flood storage area is located between Windsor Road and the outfall to the River Taw that can be tide locked. The indicative Flood Zones 2 & 3 are shown on Figure 1b.

Historical Flooding Since the construction of the Barnstaple flood defences (1984) and improvements in the sewerage system (1994) there have not been any significant flood events in the town centre. However, Bradiford Water caused frequent flooding to properties located in the Meadow Road/Windsor Road area of Barnstaple. In October 2000 15 properties were flooded internally. A river bypass channel was constructed in 2003 to provide a 1 in 100 year standard of protection. Flooding did occur recently to some properties on Clifton Street (Lower Sticklepath). Although not confirmed, this was thought to have been due to overland surface water flows from blocked gullies during the new bridge construction. There is also some doubt about the capacity of the combined sewers in this area. Properties on Braunton Road have flooded in the past but the installation of new highway drainage linked to the new bridge may have resolved this problem. Flooding of basements has been reported in the Yeo Vale and Portmarsh Field areas, possibly from high water tables during prolonged rainfall. High tides have also been North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

thought to cause flooded basements in the Rolle Quay/Mill Road areas and to properties around The Square.

Existing Flood Risk and Defences Barnstaple is at risk from both fluvial and tidal flooding or a combination of both. The Barnstaple Tidal Defence was constructed in 1984 after extensive flooding in 1981. Effectively the defences range from 6.0mAOD to 8.0mAOD. Figure 1b shows the flood risk zones and flood defences. Fluvial flooding from Bradiford water has been reduced to 1 in 100 year. (See historical flooding).

Surface Water Sewers (SWW) There are various surface water systems around Barnstaple discharging to the rivers and watercourses. There are two surface water pumping stations, one at Fair View car Park and the other on Pottington Industrial Estate. At this time NDC are not aware of any flooding problems related to the surface water system. Surface water outfalls into the river can be tide locked or locked due to high fluvial flow or a mixture of both.

Foul Water Sewers (SWW) Foul sewage on the south side of the River Taw takes pumped flows from Roundswell and is then pumped across the river to the sewer in front of the Civic Centre. All foul flows are then transferred to a pumping station at Pottington and onwards to Ashford Treatment Works. There are also a number of other pumping stations around Barnstaple, St. George’s Road, Rock Park (2No.), Chaddiford Lane, Seven Brethren and Rolle Quay. At this time NDC is not aware of any flooding problems related to the foul system.

Highway Drainage (DCC) Highway drainage in Barnstaple discharges to combined sewers (SWW), surface water sewers (SWW), highway drains (DCC) and watercourses. At this time NDC is not aware of any flooding problems although torrential rain may cause localised flooding. Efficiency of the highway drainage system is highly dependent on regular gully cleaning and maintenance.

General Barnstaple is a complicated area in respect to flood risk due to the river/tidal confluence. As such, a proposed Stage 2 SFRA is being discussed with the Environment Agency.

There are number of South West Water pumping stations transferring foul sewage around Barnstaple before discharging to Ashford Treatment Works. Each station has a limited capacity that could restrict development. In the older parts of Barnstaple many of the sewers are combined and any reduction of surface water entering them will always be a benefit. An increase could possibly increase the risk of flooding to property.

South West Water should be consulted regarding any proposed discharges to the foul and surface water sewerage systems to ensure there is capacity available. Discharges to surface water sewers should be limited to green field run off rates.

Tidal defence design heights have been predicted by various consultants for proposed developments. The 1 in 200 year level being approximately 7.15mAOD in 2108 for vulnerable development, 6.62mAOD for commercial development. Further allowances will need to be added for wave height and surge. It is recommended that developers contact the Environment Agency to discuss the up to date design height predictions. North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

Barnstaple (North West). This area can be split into Pottington, Pilton and Raleigh areas. (See Figure 1c).

Pottington The Pottington area lies to the south west of the A361 from the River Yeo to the Pottington Industrial Estate. From the flood zone map it can be seen that there are large areas within Flood Zones 2 & 3. Sea defences protect the area, but there is a concern that Pottington may also flood from high fluvial flows in the River Yeo coinciding with high tides. There are two low-lying areas: Mill Road (approximately 4.15mAOD) and an area of land adjacent to Anchor Mills on the A361 (approximately 4.0mAOD). The highest point being the centre of Pottington Industrial Estate at 8.0mAOD. The sea defences adjacent to the River Taw are generally at 7.0m but the defences between the River Taw and the A361 bridge on the River Yeo are as low as 6.34mAOD allowing the higher defences to be bypassed. To the west of Pottington Industrial Estate is a functional flood plain for Bradiford Water. Any proposed development in this area should be subjected to the Sequential Test. Should the Exception Test need to be applied, in the absence of a Stage 2 SFRA, the developer will be asked to provide an extensive Flood Risk Assessment.

Pilton The Pilton area lies between the A361 towards Braunton, to the A39 up to the hospital. Ground levels rise quickly from the River Yeo to the centre of Pilton and a large proportion of the residential property lies outside of the flood plains. Braunton Road and the fields to the rear are within the flood plain. There is a watercourse that runs between the properties on Braunton Road and the Pilton Community College playing fields. This watercourse discharges to the public surface water sewer in Fair View that eventually discharges to the River Yeo. During tide locking the surface water discharges via a pumped outlet. South West Water should be consulted if any discharges are proposed into this system. To the west of Chaddiford Lane lies the Bradiford area that has large functional flood plains. Any proposed development in the Bradiford and Braunton Road areas should be subjected to the Sequential Test. Should the Exception Test need to be applied, in the absence of a Stage 2 SFRA, the developer will be asked to provide an extensive Flood Risk Assessment.

Raleigh The Raleigh area lies between the A39 and the River Yeo south of the hospital. There has been recent development in this area and the river defences have been raised by the Environment Agency from Green Meadow Drive to Sherratts Oak. These defences were designed to protect the area from a 1 in 100 year fluvial flow combined with a maximum yearly tide. The Old Mill Leat runs through the area in open and culverted sections. Access to the existing leat and culverts and to the surface water sewer outfalls must be maintained at all times. In addition no new building should be erected over, or within 7 metres of, the culverts. Any proposed development in this area should be subjected to the Sequential Test. Should the Exception Test need to be applied, in the absence of a Stage 2 SFRA, the developer will be asked to provide an extensive Flood Risk Assessment.

Barnstaple (Centre). The Yeo Vale and Town Centre. From the River Yeo to Victoria Road. (See Figure 1d).

Yeo Vale – The Yeo Vale Road area lies within Flood Zones 2 & 3. There is a Mill Leat that flows from the weir on the River Yeo (rear of Weirside Way), across St George’s Road and to the rear of Yeo Vale Road, eventually discharging back into the River Yeo at the Rolle Street Bridge. The surface water from the Gorwell and Chanters Hill areas discharge into this Leat. North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

Any proposed development in this area should be subjected to the Sequential Test. Should the Exception Test need to be applied, in the absence of a Stage 2 SFRA, the developer will be asked to provide an extensive Flood Risk Assessment.

Town Centre – From Yeo Vale to Victoria Road. Most of the town centre is in Flood Zone 1. However, many of the sewers are combined and surface water discharges will be controlled by South West Water. The Strand and Taw Vale have areas within Flood Zones 2 & 3. Proposed development in this area should be subjected to the Sequential Test. Should the Exception Test need to be applied, in the absence of a Stage 2 SFRA, the developer will be asked to provide an extensive Flood Risk Assessment.

Barnstaple (East). This area lies between Victoria Road and Whiddon Valley and includes Newport. (See Figure 1e).

Newport – From Victoria Road to the A39. Generally ground levels rise quickly from Rock Park and a large proportion of the Newport area is in Flood Zone1. The Coney Gut watercourse runs from the Whiddon Valley area via the Great Western Industrial Estate and Portmarsh Field (Functional Flood Plain) under Rock Park and discharges into the River Taw. Just upstream of the Great Western Industrial Estate there is a weir that allows storm water to discharge through a 2 metre diameter flood relief pipeline to the River Taw. The flows downstream of the weir on the Coney Gut are controlled by a penstock. The Rock Park area was subject to regular flooding from surface storm water before the installation of the storm overflow pumps at Rock Park. High storm flows coupled with high tides still cause Portmarsh Field to flood. Proposed development in Flood Zones 2 & 3 should be subjected to the Sequential Test. Should the Exception Test need to be applied, in the absence of a Stage 2 SFRA, the developer will be asked to provide an extensive Flood Risk Assessment.

Whiddon Valley – From the A361 north. There are two significant watercourses in this area, the Coney Gut and a tributary that runs parallel to the A361. Any further development in this area is likely to fall within Flood Zone 1.

Barnstaple (South West). There are three areas of concern, Anchorwood, Lower Sticklepath and the Seven Brethren Business Park. (See Figure 1f).

Anchorwood – The Anchorwood area has been split by the new bridge access road. Nearly all of this land lies within Flood Zone 3a.The land to the east of the bridge access includes the Leaderflush & Shapland timber works and the former ARC concrete works. The average ground level being approximately 4.5mAOD. The land to the west of the bridge access, to the Tarka Trail, has been designated as a surface water storage area. The average ground level being approximately 3.5mAOD. An access tunnel and surface water culvert under the bridge road link both areas. Anchorwood is protected from tidal flooding by earth embankments to the north, and concrete/masonry walls to the east. The lowest level of these defences is 5.84mAOD. There is a concern that development of the Leaderflush & Shapland land would take up flood storage and raising the land levels may increase flooding to the Lower Sticklepath area and Seven Brethren Business Park. This would not necessarily affect tidal flooding but the EA are concerned that fluvial flooding may occur under certain events where water may be routed through Seven Brethren. The Stage 2 SFRA will provide further information. The sewerage system is a combined system with no spare capacity. Any proposed development in this area should be subjected to the Sequential Test. Should the Exception Test need to be applied, in the absence of a Stage 2 SFRA, the developer will be asked to provide an extensive Flood Risk Assessment. The sewerage system is a combined system with no spare capacity. North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

Lower Sticklepath – This area comprises of the properties on Signal Terrace, Sticklepath Terrace and Clifton Street. All of this land lies within Flood Zone 3a. The sewerage system is a combined system with no spare capacity. Any proposed development in this area should be subjected to the Sequential Test. Should the Exception Test need to be applied, in the absence of a Stage 2 SFRA, the developer will be asked to provide an extensive Flood Risk Assessment.

Seven Brethren Business Park – This area extends south from Lower Sticklepath to the old railway bridge that crosses the River Taw. All of Seven Brethren falls within Flood Zone 3. The Business Park is protected from tidal and fluvial flows by embankments and walls adjacent to the River Taw. Any proposed development in this area should be subjected to the Sequential Test. Should the Exception Test need to be applied, in the absence of a Stage 2 SFRA, the developer will be asked to provide an extensive Flood Risk Assessment.

See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.2 BISHOPS TAWTON

Area Description Bishops Tawton is situated on the Venn Stream, close to the confluence with the River Taw, approximately 1 km upstream of Barnstaple. The stream is classified as Main River, runs east to west, and is tidal through the village. The catchment area of the Venn at Bishops Tawton is 38km² and includes the catchments of Landkey and Swimbridge.

Main Rivers Venn Stream and River Taw

Ordinary Watercourses No significant ordinary watercourses.

Flood Storage Areas and Flood Zones There are no designated flood storage areas at Bishops Tawton. The indicative Flood Zones 2 & 3 are shown on Figure 2.

Historical Flooding Flooding has occurred in the area around the A377 bridge in 1960, 1961, 1968, 1976, 1979, 1981, 1983, 1984, 1993,1994, 1995, 1997, 1998, 2000, and 2004. During the 2000 flood event the water reached a level of 6.89mAOD.

Existing Flood Risk and Defences The sources of flooding in the village are complex, with several factors affecting different locations within the village. The sources of flooding are, fluvial flooding from the Venn Stream, fluvial flooding from the River Taw, Tidal flooding from the River Taw, flooding from surface water and foul water sewerage systems. Also land drainage flooding from the large catchment of mainly fields surrounding the village. Flood risk in Bishops Tawton is related to tidal, fluvial and surface water and is quite often inter-related. Tidal defences exist between the A377 bridge and the East Street bridge on the northern bank of the Venn Stream. The design level is 6.3mAOD. However, flood waters have flowed across the fields adjacent to the railway across the A377 to flood behind the defences. Figure 2 shows the flood risk zones in the Bishops Tawton area. Surface water will build up behind the flood defences during times of high fluvial and tidal flows. More information can be found in the ‘Bishops Tawton Flood Defence Scheme Pre-Feasibility Study’ produced by Babtie Brown & Root for the Environment Agency dated October 2002. Properties at Park Villas have been flooded by land drainage run-off from the fields. A temporary piped bypass presently discharges the run-off onto the highway. A permanent piped solution was constructed during July 2008 that takes this water to the River Taw.

Surface Water Sewers (SWW) There are only two known public surface water systems in Bishops Tawton. One serves Sanctuary Close and the other Cross Farm Court. Both discharge to the Venn Stream. A large proportion of the surface water from properties discharge to soakaways.

Foul Water Sewers (SWW) The foul drainage in Bishops Tawton flows to the pumping station opposite Westacott Cottages on the A377and is then transferred to the Barnstaple system. This pumping station has a storm overflow that discharges to the Venn Stream. During large storms, surface water overloads the pumping station with the possibility of flooding properties with foul sewage in the vicinity of the pumping station. The excessive surface water flows are suspected to be largely from land drainage and highway sources. North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

Highway Drainage (DCC) There are separate highway drains located in various locations around Bishops Tawton that discharge to the Venn Stream. The outfalls from the highway drains will be restricted during high tides and river flows. There has been some recent flooding during rainfall close to Westacott Cottages. This has originated from highway drainage. DCC have a scheme due to be completed in 2008 to alleviate this flooding.

The A377 can be flooded on the larger fluvial/tidal flood events and prevent traffic from passing.

Comments

There is a high risk of flooding to property adjacent to the Venn Stream. (See historical flooding.) Development close to the river should be avoided.

Surface water discharges will need to be strictly controlled for any size of development. Developers should consider use of water storage, soakaways and SuDs.

South West Water should be consulted regarding any proposed discharges to the foul and surface water sewerage systems to ensure there is capacity available. Discharges to surface water sewers should be limited to green field run off rates.

See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.3 BRAUNTON & WRAFTON

Area Description Braunton is a large village situated on the River Caen near its confluence with the Taw Torridge Estuary, approximately 8km north west of Barnstaple, Devon. Wrafton is a village that adjoins Braunton to the south-east, with Knowl Water between them.

Main Rivers River Caen, Knowl Water

Ordinary Watercourses Acland Stream

Flood Storage Areas and Flood Zones The flood storage areas in the Braunton area are adjacent to Station Close and around the Brannoc Fibres Bridge on River Caen, and the land between Braunton and Wrafton on Knowl Water. The indicative Flood Zones 2 & 3 are shown on Figures 3a and 3b.

Historical Flooding Braunton has a history of flooding from both the sea and the River Caen. The River Caen is the major watercourse that flows through the village and is classified as a Main River. Tidal influence does not significantly affect river levels above the Brannoc Fibres Bridge. Noteworthy flood events have occurred in 1894,1903,1910, 1924, 1931, 1937, 1952, 1960, 1979,1992 and 2004.

Flooding has occurred due to a lack of bridge capacity at particular locations in Braunton e.g. Score Farm, Caen Street, the old railway bridge and in the vicinity of the Memorial Bridge.

At Score Farm floodwaters overtop the east bank upstream of the bridge and flood into the farmyard putting the farmhouse at risk.

Downstream of the bridge, floodwaters overtop both banks and put four residential properties on the west bank at risk of flooding.

At Caen Bridge, the river has not overtopped its banks immediately upstream.

The next bridge upstream was the old railway bridge. This bridge was the smallest bridge across this reach of the River Caen and therefore was the first point to flood prior to the 1980’s. From here flood waters flowed south through the Primary School grounds and onto Chaloners Road. Flood waters collected at the lowest part of the village in Caen Street and could only escape from here via road gullies when the level of the river has dropped. This structure was replaced during the 1980s with a new bridge.

During the 2004 flood, water overflowed again in this area due to the backing up effect from Caen Street Bridge, in conjunction with restrictions caused by the other upstream bridges and the narrowness of the watercourse in certain areas.

Butts Bridge carries the A361 to Ilfracombe.

At Deans Bridge local residents have indicated that they had no recollection of the land flooding just upstream of the bridge before 2004. During the 2004 flood it was reported to the Environment Agency that the field on the upstream western bank flooded and the properties on the downstream side flooded. North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

There are also records that the Acland Stream passes through culverts that restrict flows during heavy rainfall. The floodwater then runs over ground down Church Street and also via the cemetery to discharge into the River Caen. In 2004, 3 properties were flooded on Church Street Downstream of this culvert.

Existing Flood Risk and Defences Land at Velator, at the confluence of the River Caen and Knowl Water, is identified by the Environment Agency as liable to tidal flooding, as is Braunton Marsh and part of the Great Field. The Braunton Tidal Defence Scheme was completed in 1998. The aim of the scheme was to alleviate tidal flooding in the Velator area and in the adjoining Barn Park/Poyers area of Wrafton. The defences consist of flood banks, steel sheet pile walls faced with masonry, a road ramp, a by-pass culvert and a storage culvert. The tidal defence level is generally at 6.5m A.O.D.

Surface Water Sewers (SWW) Generally the newer estates (Lower Park Road and Saunton Road) have separate surface water drainage. NDC is not aware of any flooding from these sewers. The properties themselves discharge mostly to soakaways. The more central and older parts of Braunton is combined.

Foul Water Sewers (SWW) Most of foul sewerage in Braunton flows by gravity to the site of the old treatment works at Velator. Here it is pumped to Ashford Treatment Works. There are three pumping stations transferring flows into this system. One at Saunton Road that takes the flows from Saunton Sands pumping station and the area to the west of Westmead Close. Another is located at Curve Acre and transfers flow from the east. Both of these stations have storm/emergency overflows discharging to the nearest watercourse. The last is located is a small station on Wrafton Road that transfers flows from Capern Close. The foul sewerage system in Braunton lacks spare capacity. NDC is not aware of any flooding from these sewers.

Highway Drainage (DCC) There are highway drains in Braunton and NDC is not aware of flooding apart from Caen Street and the highway adjacent to Velator Industrial Estate when the river levels are high and the highway drains cannot discharge.

Comments There is a high risk of flooding adjacent to the River Caen and development in this area should be avoided. There a number of South West Water pumping stations transferring foul sewage around Braunton. Each station has a limited capacity that could restrict development. In the older parts of Braunton many of the sewers are combined and any reduction of surface water entering them will always be a benefit but an increase could possibly raise the risk of flooding to property. South West Water should be consulted regarding any proposed discharges to the foul and surface water sewerage systems to ensure there is capacity available. Discharges to surface water sewers should be limited to green field run off rates. Surface water discharges will need to be strictly controlled for any size of development. Developers should consider use of water storage, soakaways and SuDs.

See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.4 BRAYFORD

Area Description Brayford is a village located on the south-western boundary of Exmoor and includes a part of the National Park. The village is situated in a steep sided valley, with the River Bray running through the middle of the village. The Bray rises on Exmoor, near Challacombe, and tumbles down to 150m above sea level where it flows through the village, then joins the River Mole south-west of South Molton, and finally the River Taw.

Main Rivers River Bray

Ordinary Watercourses Tributary of the River Bray flowing under Little Bridge. Tributary joining the River Bray adjacent to the sewage treatment works. Mill Leat

Flood Storage Areas and Flood Zones There are no designated flood storage areas at Brayford. The indicative Flood Zones 2 & 3 are shown on figure 4. However, Flood Zone 3 in Brayford is currently being reassessed by the Environment Agency. The predicted flooding does not match the historical outline.

Historical Flooding Properties close to the River Bray adjacent to Brayford Bridge have been recorded as flooding in 1952, 1983, 1993, 1996 and 2000. These properties include Purbrook Cottage, Broomhill Bungalow & 1 & 2 The Villas.

Existing Flood Risk and Defences None

Surface Water Sewers (SWW) The only surface water sewer serves Broomhill Villas

Foul Water Sewers (SWW) Foul drainage flows to the sewage treatment works located to the south west of Brayford. NDC are not aware of any flooding problems related to the foul system.

Highway Drainage (DCC) The highway at Brayford Bridge and Little Bray Lane has been flooded due to high river flows.

Comments New development should avoid the flood plains.

South West Water should be consulted regarding any proposed discharges to the foul and surface water sewerage systems to ensure there is capacity available. Discharges to surface water sewers should be limited to green field run off rates.

See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.5 CHIVENOR

Area Description Chivenor is located on the A361 between Barnstaple and Braunton. The area consists of Chivenor Army Base with adjacent housing and a business park to the east.

Main Rivers River Taw

Ordinary Watercourses None

Flood Storage Areas and Flood Zones There are no designated flood storage areas at Chivenor. The indicative Flood Zones 2 & 3 are shown on Figure 5.

Historical Flooding NDC have no significant flooding incidents recorded from any source.

Existing Flood Risk and Defences. The flood defences to the airfield at Chivenor consist of 2-3m high banks protected with concrete faced stone revetment with an effective flood defence level estimated at 5.65mAOD. A comprehensive flood risk assessment has been carried out for RNB Chivenor, with new defences proposed as part of overall development strategy. However the flood risk assessment did not cover the industrial site.

Surface Water Sewers (SWW) No details

Foul Water Sewers (SWW) There is a small length of public sewer marked on the records running down the road adjacent to The Hunters Lodge. The former M.o.D. housing estate to the east of the base discharges foul sewage to this sewer. The sewer then discharges to a privately owned septic tank/treatment works maintained by the M.o.D.

Highway Drainage (DCC) No details

Comments Future development will be restricted by Sewage Treatment. It is unlikely that the M.o.D. will allow new discharges to their treatment works so South West Water should be consulted in respect to providing first time sewerage.

See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.6 CHULMLEIGH

Area Description The town of Chulmleigh lies one mile east of the A377 between Crediton and Barnstaple. The town is situated on a south facing hilltop some 60m above the Little Dart River.

Main Rivers None

Ordinary Watercourses Little Dart River and East Street watercourse

Flood Storage Areas and Flood Zones There are no designated flood storage areas at Chulmleigh. The indicative Flood Zones 2 & 3 are shown on Figure 6.

Historical Flooding NDC is not aware of any significant flood events within the village from any source apart from one event that was recorded in July 1982. The rainfall event was estimated in excess of 1 in 1000 years. Unfortunately there are no details of the exact nature of the flooding. There has been flooding reported close to the Little Dart River in 2004.

Existing Flood Risk and Defences None

Surface Water Sewers (SWW) There have been some new surface water sewers constructed recently with storm water storage on the Royal Charter Park Estate. This discharges to the East Street watercourse. There are also surface water sewers on the Back Lane Industrial Estate and Church Close both discharging to minor watercourses. NDC is not aware of any flooding from these sewers.

Foul Water Sewers (SWW) The existing foul sewerage system in Chulmleigh discharges to the sewage treatment works set in the valley below the town. There are three pumping stations two located on East Street and one on Back Lane. NDC are not aware of any significant flooding. The sewerage system will require major infrastructure improvements if any significant new development is proposed.

Highway Drainage (DCC) Details from a previous impermeable area study suggest that there is a separate highway drainage system.

Comments There are no known drainage problems in the area, however discharging to a surface water sewer or watercourse may be difficult depending on the location of any proposed development. The Environment Agency should be consulted regarding any proposed discharges to watercourses. South West Water should be consulted regarding any proposed discharges to the foul and surface water sewerage systems. It is likely that Developers will be required to contribute towards the cost of any required improvements. Discharges to surface water sewers should be limited to green field run off rates.

See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.7 COMBE MARTIN

Area Description Combe Martin lies approximately 6km east of Ilfracombe on the North Devon Coast. The village is a ribbon development following the path of the River Umber in a steep sided valley.

Main Rivers River Umber

Ordinary Watercourses West Challacombe Water, Salt Wood Stream and the Buzzacott Lane Stream.

Flood Storage Areas and Flood Zones There are no designated flood storage areas at Combe Martin. The indicative Flood Zones 2 & 3 are shown on Figure.7.

Historical Flooding There have been a number of flood events through Combe Martin. Properties have been flooded in the vicinity of Water Lane Bridge and Western Gardens Bridge on the River Umber, the largest was recorded in December 1960. Large overland flows have been experienced on Chapel Lane, Comers Lane, Corner Lane and Water Lane but there is no record of internal flooding from overland flows. High tides and heavy seas also affect properties at the back of the main beach, mainly from wave action.

Existing Flood Risk and Defences Flooding occurs alongside the river and also from overland flows from the fields above the village. During periods of heavy rain, surface water from the fields discharges onto Corner Lane, Comers Lane, Chapel Lane and Water Lane causing damage to road surfaces. No flooding of property has been recorded from these flows. The water carries debris onto the main highway through Combe Martin at Corner Lane and Comers Lane. There is only evidence of one natural watercourse that discharges into the drainage system on Chapel Lane. The other catchments appear to rely on using the lanes as the route for water to flow away from the fields. The Environment Agency has recently improved the flood defence for Water Terrace. The properties at the head of Combe Martin Beach are protected by a masonry sea wall. This wall is susceptible to overtopping on major storm events.

Surface Water Sewers (SWW) There is only one length of public surface water drainage in Combe Martin that serves Holdstone Way at the eastern edge of the village.

Foul Water Sewers (SWW) The foul sewerage system in Combe Martin has limited spare capacity and is a combined system. Most of the foul drainage flows to Lorna Irwin pumping station at the head of the main beach. Flows are then transferred to the treatment works located near to the centre of the village in a disused quarry below Clorridge Hill. Foul drainage from Newberry beach is pumped to the station at the head of the beach that consequently pumps flow to the Lorna Irwin pumping station. Once treated flows are discharged to the sea at Lester Point 500m north of the main beach. NDC is not aware of any flooding from the foul system since recent improvements have been made.

Highway Drainage (DCC) Details from a previous impermeable area study suggest that there is a separate highway drainage system. North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

Comments For sites near the River Umber, soakaway systems are unlikely to be effective due to the high water table. Surface water discharges will need to be strictly controlled for any size of development. Developers should consider use of water storage and SuDs. Elsewhere within the village, water draining from the surrounding hills also causes localised flooding, where improved land drainage systems are required. South West Water should be consulted regarding any proposed discharges to the foul and surface water sewerage systems to ensure there is capacity available. Discharges to surface water sewers should be limited to green field run off rates. Development in Flood Zones 2 & 3 should not be permitted.

See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.8 CROYDE

Area Description The village of Croyde lies half a mile inland behind the sand dunes of Croyde Bay and is enclosed by rising land. The Crydda Stream runs through the centre of the village and discharges onto the beach. The upstream catchment includes the village of Georgeham.

Main Rivers None

Ordinary Watercourses The Crydda Stream

Flood Storage Areas and Flood Zones There are no designated flood storage areas at Croyde. The indicative Flood Zones 2 & 3 are shown on Figure 8.

Historical Flooding The centre of Croyde village has a history of flooding from the Crydda Stream adjacent to St. Mary’s Road, in particular 1979,1993,1996, 2004 and 2008. Flooding mainly affects the highway and some of the properties on the northern side of St. Mary’s Road. Wave overtopping of the sea defences on Croyde Beach was recorded in March 2008.

Existing Flood Risk and Defences Flooding from the foul sewers may have been reduced by recent works carried out by South West Water. However, surface water flooding from the Crydda Stream is estimated to have a 1 in 10 year risk of flooding the properties and highway. The Crydda Stream requires yearly monitoring and maintenance to ensure risk of flooding does not increase. Properties at the head of Croyde Beach are protected with masonry sea walls, but a low standard of protection.

Surface Water Sewers (SWW) There are two public surface water sewers in Croyde. One serves Ora Stone Park, the other at Home Farm Close.

Foul Water Sewers (SWW) The new wastewater treatment works in Moor Lane has been completed recently. There is no spare capacity in the foul sewerage system. Flooding has been recorded in the centre of the village at Bridge Farm from the foul sewerage system.

Highway Drainage (DCC) Flooding of the highway occurs during high flows in the Crydda Stream.

Comments Flood Zones 2 & 3 are restricted to a relatively small corridor close to the centre of the village. New development is likely to be within Zone1. Surface water discharges will need to be strictly controlled for any size of development. Developers should consider use of water storage, soakaways and SuDs to ensure flooding from the Crydda Stream is not increased. South West Water should be consulted regarding any proposed discharges to the foul and surface water sewerage systems to ensure there is capacity available. Discharges to surface water sewers should be limited to green field run off rates.

See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.9 FREMINGTON

Area Description Fremington village is situated 0.5km south of the River Taw and 5km west of Barnstaple. The land slopes gently from the hills to the south towards the River Taw. The Fremington Stream flows through the historic core of the village from south to north.

Main Rivers River Taw and the Fremington Stream

Ordinary Watercourses None

Flood Storage Areas and Flood Zones There is a flood storage area located on the low-lying land between Fremington Pill and the B3233. The Fremington Pill embankment provides tidal protection to the area and there is a tidal flap at the end of the Fremington Stream where it discharges through the to the Pill. The indicative Flood Zones 2 & 3 are shown on Figure 9.

Historical Flooding Flooding has occurred in the past from the Fremington Stream. In June 1993 eighteen properties were flooded nine internally. In 2004, ten properties were flooded, four internally. The flooded properties lie on the length of the Fremington Stream between Westaway and the B3233. Fremington Pill is also liable to tidal flooding between Muddlebridge and the Taw Estuary along the north-eastern boundary of the village. There have also been various other surface water, minor watercourse issues contact the EA or NDC for further details.

Existing Flood Risk and Defences. The Environment Agency carried out a study in 1996 that concluded that the threshold for flooding for the Fremington Stream was 1 in 100 years. The earth embankment at the Fremington Stream outfall to the Fremington Pill has a crest level of 6.1mAOD. The Muddlebridge Cottages at the head of Fremington Pill are protected from tidal flooding by ramp and floodwalls to a defence level of 6.3mAOD.

Surface Water Sewers (SWW) There are various surface water systems around Fremington discharging to the rivers and watercourses. Some of the newer estates have storm storage included.

Foul Water Sewers (SWW) Foul drainage from Bickington, parts of Roundswell and Fremington flow to the pumping station at Fremington Pill. There is also a small pumping station at Chilpark. Both these pumping stations discharge to the gravity sewer running through the fields north of Yelland Road. Foul sewage flow is then transferred from the site of the former treatment works at Yelland to the Cornborough Treatment Works (in Torridge District). Parts of the foul system have restricted capacity.

Highway Drainage (DCC) No details

Comments Surface water discharges will need to be strictly controlled for any size of development. Developers should consider use of water storage, soakaways and SuDs. South West Water should be consulted regarding any proposed discharges to the foul and surface water sewerage systems to ensure there is capacity available. Discharges to surface water sewers should be limited to green field run off rates. See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.10 GOODLEIGH

Area Description Goodleigh is a small village located approximately 3km to the east of Barnstaple. The village is situated on the southern flanks of Northleigh Hill and slopes steeply down to the Coney Gut watercourse.

Main Rivers None

Ordinary Watercourses Coney Gut

Flood Storage Areas and Flood Zones There are no designated flood storage areas at Goodleigh. The indicative Flood Zones 2 & 3 are shown on Figure 10.

Historical Flooding During heavy storms water run-off from the fields above the village ran down the high street. This caused flooding to the properties on the lower side of the high street and Lake Cottage as shown on Figure 10a.

Existing Flood Risk and Defences. The construction of the Goodleigh Flood Alleviation Scheme in 2007 has reduced flooding within the village and caters for flows up to a 1 in 100 year return. Surface water flows from the higher part of Northleigh Hill are transferred directly to the Coney Gut via drainage owned by the North Devon Council. The Parish Council hold a stock of sandbags for heavy rainfall events. The scheme relies on adequate maintenance of the gully system on Northleigh Hill. This scheme also incorporated a flood by-pass pipe at Lake Cottage. Since completion of the Flood Alleviation Scheme, no flooding has been reported.

Surface Water Sewers (SWW) There are no public surface water sewers in the area.

Foul Water Sewers (SWW) Foul water flows to the treatment works that discharges to the Coney Gut below Lake Cottage. NDC are not aware of any flooding problems related to the foul system.

Highway Drainage (DCC) There are highway drains running throughout Goodleigh that eventually discharge to the Coney Gut.

Comments There are no known drainage problems in the area since the Goodleigh Flood Alleviation Scheme was completed in 2007. Flooding could still be an issue if the highway gullies are not kept clear. There are no public surface water sewers in the area. Soakaways and SuDS should be considered. Proposed surface water connections to any watercourse should be evaluated to ensure flood risk is not increased downstream or at the discharge point.

The Environment Agency should be consulted regarding any proposed discharges to watercourses.

South West Water should be consulted regarding any proposed discharges to the foul water sewerage system. It is likely that Developers will be required to contribute towards the cost of any required improvements. See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.11 HELE, ILFRACOMBE

Area Description Hele is situated in a steep sided valley on the North Devon Coast 1.5km east of Ilfracombe. The Hele Valley stream runs through Hele and finally discharges on Hele beach. The catchment area is 5km².

Main Rivers Hele Valley Stream

Ordinary Watercourses Mill Stream

Flood Storage Areas and Flood Zones There are no designated flood storage areas at Hele. The indicative Flood Zones 2 & 3 are shown on Figure11.

Historical Flooding Properties in Hele Village have flooded on a number of occasions. In January 1993 the Hele Valley stream and side tributaries flooded Honey Cottage, Chapel Cottage, Primrose Cottages and 3 other properties. A similar flooding event occurred in December 1999. The Café at the head of Hele Beach uses flood boards and sandbags to help protect it from wave action during high tides and storms.

Existing Flood Risk and Defences Several structures along the watercourse will impede the flow of floodwater causing damage to adjacent properties. The existing standard of protection has been estimated as 1 in 10 years.

Surface Water Sewers (SWW) There are no recorded surface water sewers in Hele Bay.

Foul Water Sewers (SWW) Foul drainage in Hele is a combined system that flows down to a transfer pumping station situated at the head of the beach. This station pumps flows to the Ilfracombe catchment. Flooding to the property adjacent to the pumping station has occurred in the past, recent works carried out may have resolved this. Flows from Pines Close on the eastern side of Ilfracombe are pumped into the Hele system.

Highway Drainage (DCC) Details from a previous impermeable area study suggest that most of the highway drainage discharges to the combined sewer.

Comments Surface water discharges will need to be strictly controlled for any size of development. Developers should consider use of water storage, soakaways and SuDs to ensure flows are not increased in the Hele Valley Stream.

South West Water should be consulted regarding any proposed discharges to the foul sewerage system to ensure there is capacity available. Discharges to surface water sewers should be limited to green field run off rates.

See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.12 ILFRACOMBE TOWN

Area Description Ilfracombe is located on the North Devon coast between Woolacombe and Combe Martin and is approximately 19 km north of Barnstaple. The town is situated on steep sided hills that slope down to sea level. The East and West Wilder Brooks flow northward through the western side of the town, join at the end of Greenclose Road and eventually discharge onto Wildersmouth beach. Ilfracombe has the largest harbour on the North Devon Coast.

Main Rivers The East and West Wilder Brooks. These two watercourses join at the junction of Greenclose Road and Wilder Road before discharging at Wildersmouth Beach. The culverts that carry the watercourse under Wilder Road from Greenclose Road to Wildersmouth Beach are estimated to provided a standard of protection of 1 in 10 years.

Ordinary Watercourses None

Flood Storage Areas and Flood Zones There are no designated flood storage areas at Ilfracombe. The indicative Flood Zones 2 & 3 are shown on Figure 12.

Historical Flooding Flooding has occurred in the past on the East Wilder Brook at Ravenswood on Brookdale Avenue due to a bridge restriction but this has now been resolved. Flooding has also occurred in 1993 on the West Wilder Brook at Greenclose Road and Brookfield Place due to debris causing a restriction in the downstream culvert. There are a few occupied cellars on Greenclose Road that are at risk of flooding if the culvert blocks. In October 1996 large waves came over the wall at Wildersmouth Beach and water flowed down to the harbour flooding several properties en route. The Quay and harbour areas are also liable to occasional tidal flooding. Numerous events have had waves overtopping Harbour defences, mostly recent in March 2008. Foul flooding from the sewerage system in the Broad Street and St James Place area close to the harbour has been recorded on a number of occasions. Recent works by South West Water have reduced this risk. A flash food engulfed Ilfracombe High Street in 2007 due to torrential rain.

Existing Flood Risk and Defences Flood risk in Ilfracombe is tidal and fluvial. The properties adjacent to the harbour have been subjected to flooding on a number of occasions from high spring tides linked with areas of low pressure and on-shore gales. The properties on The Quay are protected on the seaward side by the Cheyne Beach wave return wall and in the harbour by masonry walls. The Old Quay Head structure at the harbour entrance also protects these properties. The Cheyne wall generally has a crest level of approximately 7.55mAOD but there is an 18m section at the western end of the wall that has a crest level of 5.82mAOD. There are also masonry walls on the harbour side of the properties on Broad Street and a tidal gate at the top of the main slipway. Lowest crest level 5.7m. There are further masonry sea walls protecting property between Cheyne Beach and the car park to the rear of the Landmark theatre. Crest levels are presently unavailable. Figure 12 shows the flood risk zones in the Ilfracombe area.

Surface Water Sewers (SWW) There are surface water sewers in the town but a large proportion of the drainage is combined. NDC is not aware of any flooding on the surface water system. North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

Foul Water Sewers (SWW) The foul sewerage system in Ilfracombe generally lacks spare capacity for significant future developments. Flows from the Hele Bay catchment are transferred to the east side of Ilfracombe. Generally the foul drainage to the east of Ilfracombe College discharges by gravity to the treatment works at Larkstone. Foul drainage to the west flows down to the pumping station at Cheyne Beach and is then transferred to the treatment works at Larkstone. Since the construction of the treatment works and further enhancements to the foul system NDC are not aware of any significant flooding from the sewerage system.

Highway Drainage (DCC) Highways adjacent to the harbour have flooded during exceptional tides.

Comments The East and West Wilder Brooks have been known to surge and flood property in the past. Although these occasions have been related to blockages the risk of flooding is still high and restrictions to surface water discharges are needed. Surface water discharges will need to be strictly controlled for any size of development. Developers should consider use of water storage, soakaways and SuDs to ensure flows are not increased in the Wilder Brooks. Development adjacent to the harbour and between Wildersmouth Beach and the harbour should provide Flood Risk Assessments for tidal flooding. South West Water should be consulted regarding any proposed discharges to the foul and surface water sewerage systems to ensure there is capacity available. Discharges to surface water sewers should be limited to green field run off rates.

See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.13 LANDKEY, LANDKEY NEWLAND & SWIMBRIDGE NEWLAND

Area Description The Landkey is located 5kms to the south east of Barnstaple. There are three areas of the village, to the west Landkey Town, to the east is Swimbridge Newland and midway between these Landkey Newland. Landkey lies at the Confluence of three watercourses, the Venn Stream, Hartford Stream and the Yarnacott Stream.

Main Rivers Venn Stream (Landkey Stream), the Harford Stream and the Yarnacott Stream

Ordinary Watercourses None.

Flood Storage Areas and Flood Zones There are no designated flood storage areas. The indicative Flood Zones 2 & 3 are shown on Figure 13.

Historical Flooding There is a long history of flooding at Landkey, records show that there were 12 events with property flood depths greater than 300mm between 1923 and 1960. In 1961 a flood defence scheme was constructed to combat this flooding which was upgraded again in 1990. No flooding has been recorded since.

Existing Flood Risk and Defences The Landkey Flood Defences consist of a mixture of earth banks, side channels and masonry walls. Improvements were made in 1990 and consisted of a relief channel at Bableigh Bridge, new walls on the Yarnacott Stream and upstream channel improvements. The flood defences were originally designed to provide a flood protection of 1 in 100. See the indicative Flood Zones 2 & 3 shown on Figure 13.

Surface Water Sewers (SWW) A large proportion of Landkey is served by surface water drainage that discharges to the Venn Stream.

Foul Water Sewers (SWW) Foul drainage from Swimbridge discharges into the eastern end of the Landkey sewerage network. Flows then discharge into the pumping station at Church Meadow where the flow is transferred to the Barnstaple system. NDC are not aware of any flooding problems related to the foul system.

Highway Drainage (DCC) No details

Comments There are no known fluvial problems in the area since the construction of the flood defence scheme. Increase in surface water flows discharging to the Venn Stream will affect Bishops Tawton. Surface water discharges will need to be strictly controlled for any size of development. Developers should consider use of water storage, soakaways and SuDs.

South West Water should be consulted regarding any proposed discharges to the foul and surface water sewerage systems to ensure there is capacity available. Discharges to surface water sewers should be limited to green field run off rates.

See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.14 LYNTON & LYNMOUTH

Area Description Lynton and Lynmouth are two villages on the north coast of Devon within the Exmoor National Park. Lynton is sited in a hanging valley some 150m above Lynmouth. The East and West Lyn Rivers join at Lynmouth before discharging to the Bristol Channel

Main Rivers East and West Lyn Rivers

Ordinary Watercourses Ladywell Stream

Flood Storage Areas and Flood Zones There are no designated flood storage areas at Lynton and Lynmouth. The indicative Flood Zones 2 & 3 are shown on Figure 14.

Historical Flooding Flood defences were built at Lynmouth in 1956 after the 1952 disaster. Three properties were flooded from the Ladywell Stream in 1983, exact location unknown. High tides caused flooding to the highway and the cellar of the Bath Hotel in 2006.

Existing Flood Risk and Defences The properties situated adjacent to the harbour are at risk of flooding from tidal flooding and wave action. There is masonry sea wall defence fronting the Esplanade car park with the lowest point being 8.5mAOD. There is also a masonry wall with rock armour in front of The Esplanade, the lowest point being 7.08mAOD. The Rhenish Tower Pier also provides some protection to the harbour.

Surface Water Sewers (SWW) There is a surface water sewer that takes the Ladywell stream down Lee Road, through Castle Hill car park and discharges eventually into the West Lyn River. Castle heights and Bakers Court Lane also have surface water drainage that connects to this sewer.

Foul Water Sewers (SWW) The combined foul sewerage system in Lynton and Lynmouth generally lacks spare capacity for significant future developments. The separation of the Ladywell Stream has reduced the risk of flooding in Lynton. Foul flows from Lynton, Lynmouth and Barbrook are transferred to the treatment works located adjacent to the Manor House at Lynmouth. NDC is not aware of any recent flooding events.

Highway Drainage (DCC) The gullies in Lee Road are connected to the SWW surface water sewer. Details from a previous impermeable area study suggest that a large proportion of the highways discharge to the foul drainage system.

Comments There are no known drainage problems in the area. There is a risk of tidal flooding in Lynmouth.

South West Water should be consulted regarding any proposed discharges to the foul and surface water sewerage systems to ensure there is capacity available. Discharges to surface water sewers should be limited to green field run off rates.

See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.15 ROUNDSWELL

Area Description For this report Roundswell is the area to the west of the Old Torrington Road to Tews Lane and from the B3233 to the link road. Roundswell consists of an industrial estate adjacent to a large residential area.

Main Rivers The Muddlebrook watercourse.

Ordinary Watercourses The Lake Stream

Flood Storage Areas and Flood Zones There are designated flood storage areas on the Muddlebrook Watercourse situated at various locations along its length and are separated from gardens and fields, contact the Environment Agency for specific details. The indicative Flood Zones 2 & 3 are shown on Figure15.

Historical Flooding Flooding has been recorded internally at Byerley Tews Lane in 2004. Improvements have been made to the highway drainage and maintenance carried out on the Muddlebrook Overspill Channels to help prevent a re-occurrence. Flooding was also recorded at Lake in 2004 at Vine Cottage.

Existing Flood Risk and Defences None. However, risks may increase if regular maintenance of the overspill channels on the Muddlebrook Watercourse is not carried out.

Surface Water Sewers (SWW) There are various surface water systems around Roundswell area and all discharge to the Muddlebrook watercourse. SWW are also responsible for the Muddlebrook Overspill Channels, which were constructed as part of the Roundswell surface water requisition. This requisition was constructed to enable the development of the Roundswell area.

Foul Water Sewers (SWW) Foul drainage is routed in two directions. The area to the east of the A3125 drains to Roundswell pumping station. This station pumps flows over to the Barnstaple catchment via Anchorwood. The area to the west drains by gravity to Fremington. NDC are not aware of any recent flooding problems related to the foul system. The foul drainage system discharging towards Fremington has been improved recently by South West Water.

Highway Drainage (DCC) A large proportion of the highways will have road gullies that are connected to the public surface water system.

Comments The Muddlebrook requires regular maintenance to reduce the possibility of flooding. Surface water discharges will need to be strictly controlled for any size of development. Developers should consider use of water storage, soakaways and SuDs. to ensure flows are not increased in the Muddlebrook.

South West Water should be consulted regarding any proposed discharges to the foul and surface water sewerage systems to ensure there is capacity available. Discharges to surface water sewers should be limited to green field run off rates. See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.16 SOUTH MOLTON

Area Description South Molton is a market town situated some 17km east of Barnstaple and lies just south of the A361 North Devon Link Road. The River Mole flows from north to south on the eastern side of the town. Pathfields Industrial Estate is located on the northern edge of the town.

Main Rivers River Mole

Ordinary Watercourses The Burcombe Stream discharges into the River Mole near to the A361.

Flood Storage Areas and Flood Zones There are no designated flood storage areas in South Molton. The indicative Flood Zones 2 & 3 are shown on Figure16.

Historical Flooding The Mill-on-the-Mole Caravan Park was flooded in 1960 &1996. Highway flooding at Borners Bridge by the Burcombe Stream in 1983.

Existing Flood Risk and Defences The Mill-on-the-Mole Caravan Park is within Flood Zones 2 & 3.

Surface Water Sewers (SWW) The newer parts of the town are served by separate surface water systems, in some cases roof surface water drains to soakaway and highways to highway drains. The older parts of the town are served by combined drainage.

Foul Water Sewers (SWW) Foul sewage in South Molton flows to the east of the town to the sewage treatment works adjacent to the River Mole. There are pumping stations located at West Street, Winston Park, Parsonage Lane, Pathfields and Poltimore Close. Much of the sewerage network in South Molton lacks spare capacity.

Highway Drainage (DCC) No details

Comments There are no known drainage problems in the main part of the town. Soakaways and SuDS should be considered. Proposed surface water connections to any watercourse should be evaluated to ensure flood risk is not increased downstream or at the discharge point. South West Water should be consulted regarding any proposed discharges to the foul and surface water sewerage systems to ensure there is capacity available. Discharges to surface water sewers should be limited to green field run off rates.

See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.17 SWIMBRIDGE

Area Description Swimbridge is a large village located to the south of the North Devon Link Road approximately 2 kilometres south east of Landkey and 10 kilometres north west of South Molton. The village is situated in the valley of Venn Stream with hills to the north and south of the main settlement, although Swimbridge extends up Station Hill to Archipark, Hooda Close and Yarnacott Corner to the north.

Main Rivers Venn Stream (Landkey Stream)

Ordinary Watercourses Venn Stream upstream of Swimbridge

Flood Storage Areas and Flood Zones There are no designated flood storage areas at Swimbridge. The indicative Flood Zones 2 & 3 are shown on Figure 17.

Historical Flooding Swimbridge has a history of flooding dating back to 1923. In 1952 13 properties flooded up to a depth of 900mm. Flooding occurred again in 1960 and in 1983 when the Jack Russell Pub flooded to a depth of 450mm. A 1.8m diameter bypass culvert was constructed in 1988,originally designed to reduce the fluvial flood risk to 1 in 100 years. In 1992 at Bestridge Meadow to the east of Swimbridge the collapse of a buried watercourse that was subsequently repaired caused flooding to gardens.

Existing Flood Risk and Defences Properties are protected upstream and downstream of the road bridge by a bypass culvert with a 1 in 100 year protection.

Surface Water Sewers (SWW) There are two surface water sewers in Swimbridge. One serves St. Honorine du Fay Close and the other at Archipark.

Foul Water Sewers (SWW) The foul drainage in Swimbridge flows to the pumping station at south west side of the village. Flows are then transferred to Landkey and then onto Barnstaple. The foul sewerage system has no spare capacity for any significant development.

Highway Drainage (DCC) No details

Comments Flooding of properties has been reduced to a risk of 1 in 100, further development should ensure this risk is not increased.

Discharging to a surface water sewer or watercourse may be difficult depending on the location of any proposed development. Soakaways and SuDS should be considered. Proposed surface water connections to any watercourse should be evaluated to ensure flood risk is not increased downstream or at the discharge point. This may be difficult due to the steep gradients over most of the area that will restrict any storage.

The Environment Agency should be consulted regarding any proposed discharges to watercourses. North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

South West Water should be consulted regarding any proposed discharges to the foul and surface water sewerage systems. It is likely that Developers will be required to contribute towards the cost of any required improvements. Discharges to surface water sewers should be limited to green field run off rates.

See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.18 UMBERLEIGH

Area Description Umberleigh village is set around the old three arched Umberleigh Bridge by the River Taw, 6 miles south of Barnstaple on the A377 Exeter road.

Main Rivers River Taw

Ordinary Watercourses None

Flood Storage Areas and Flood Zones There are no designated flood storage areas at Umberleigh. The indicative Flood Zones 2 & 3 are shown on Figure18.

Historical Flooding Umberleigh has flooded on a number of occasions particularly in 1952, 1960, 1968, 1981, 1982, 1983, 1996, 1998, 1999, 2000 and 2004.

Existing Flood Risk and Defences There are no flood defences. 25 properties have a 1.0% or greater annual probability of flooding. The main highways and the railway track are also at risk.

Surface Water Sewers (SWW) No public surface water drainage

Foul Water Sewers (SWW) There is a small length of public sewer in front of Millwood Cottages on the A377 that discharges to a septic tank.

Highway Drainage (DCC) A377 and B3227 have been closed by flood waters.

Comments There is only a small length of public sewer in Umberleigh. Any significant proposed development should consult with South West Water and discuss a ‘First Time Sewerage Scheme’.

There are no public surface water sewers in the area. Soakaways and SuDS should be considered. Proposed surface water connections to any watercourse should be evaluated to ensure flood risk is not increased downstream or at the discharge point. The Environment Agency should be consulted regarding any proposed discharges to watercourses.

See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.19 WITHERIDGE

Area Description The village is situated along the B3137 between South Molton and Tiverton and is approximately 15 kilometres from each of these towns. Witheridge is located on the edge of the NDC area with the Mid Devon District boundary abutting the south eastern corner of the village.

Main Rivers None

Ordinary Watercourses Minor watercourse to the west.

Flood Storage Areas and Flood Zones There are no designated flood storage areas at Witheridge. The indicative Flood Zones 2 & 3 are shown on Figure 19.

Historical Flooding In 1978 the A373 flooded close to the Little Dart River. In 1983 Witheridge Mill was flooded from the Little River Dart. In 1996 heavy rain caused foul & surface water drains to overflow.

Existing Flood Risk and Defences None

Surface Water Sewers (SWW) Surface water sewers serve the newer parts of the village at Brooke Road and Lakelands Close. Much of the older part of the village is on a combined system.

Foul Water Sewers (SWW) The foul sewerage system in Witheridge is overloaded and has no spare capacity to cater for any new significant development. The foul drainage in Witheridge flows to the treatment works located to the west. There are no pumping stations within the catchment.

Highway Drainage (DCC) From past studies it would appear that there is a separate highway drainage system on the roads in the village.

Comments There no known drainage problems in the area, however discharging to a surface water sewer or watercourse may be difficult depending on the location of any proposed development. Soakaways and SuDS should be considered. Proposed surface water connections to any watercourse should be evaluated to ensure flood risk is not increased downstream or at the discharge point.

The Environment Agency should be consulted regarding any proposed discharges to watercourses.

South West Water should be consulted regarding any proposed discharges to the foul and surface water sewerage systems. It is likely that Developers will be required to contribute towards the cost of any required improvements. Discharges to surface water sewers should be limited to green field run off rates.

See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

2.20 YELLAND QUAY

Area Description Yelland Quay is located to the north west of Yelland, on the southern bank of the River Taw. A large proportion of the area comprised of the East Yelland Old Power Station demolished in the 1980’s

Main Rivers River Taw

Ordinary Watercourses None

Flood Storage Areas and Flood Zones There are no designated flood storage areas at Yelland Quay. The indicative Flood Zones 2 & 3 are shown on Figure 20.

Historical Flooding In 1983 Yelland Power Station reported the basement flooded from tidal flooding.

Existing Flood Risk and Defences There are grass flood banks adjacent to the River Taw that protect the area from tidal flooding to approximately 1 in 20 - 30 year standard. The crest level is 6.19mAOD.

Surface Water Sewers (SWW) None

Foul Water Sewers (SWW) None

Highway Drainage (DCC) No details

Comments A large proportion of this area sits within Flood Zones 2 & 3. Any proposed development in this area should be subjected to the Sequential Test. Should the Exception Test need to be applied, in the absence of a Stage 2 SFRA, the developer will be asked to provide an extensive Flood Risk Assessment.

See Section 1 for further general comments.

North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

3.0 Recorded Flooding Outside of the main catchments outlined in this report - taken from the Environment Agency Flooding Incident Database

Location Cause Watercourse Flooded area Date Grid Ref. Witheridge Mill F Little Dart River Highway 1983 SS 8012 1510 Drayford Mill L Land Building 2007 SS 7837 1376 Drayford F Little Dart River Highway 1983 SS 7820 1370 Between E & W F Little Dart River Highway 1983 SS 7740 1340 Worlington West Worlington F Little Dart River Highway 1996 SS 7690 1330 West Worlington F Little Dart River Highway 1983 SS 7690 1330 Brendon F East Lyn River Building 2000 SS 7678 4822 Brendon F East Lyn River 2 Buildings 1982 SS 7650 4820 Brendon F East Lyn River Buildings 1952 SS 7650 4800 Brendon F East Lyn River 14 Buildings 1960 SS 7650 4800 Brendon F East Lyn River Building 1983 SS 7650 4800 Brendon F East Lyn River 11 Buildings 1960 SS 7650 4800 Avercombe F Crooked Oak Unknown 1996 SS 7650 2310 Avercombe F Crooked Oak Highway 1983 SS 7650 2310 West Worlington F Little Dart River Highway 1983 SS 7540 1330 Little Silver Odham Bridge F Highway 1996 SS 7420 2060 Stream Cheldon F Little Dart River Highway 1983 SS 7380 1290 Heasley Mill F River Mole Highway 1983 SS 7370 3220 Heasley Mill D Land Building & Highway 1974 SS 7370 3220 Buckham F Stream Highway 1983 SS 7350 1990 Little Silver Alswear F Buildings 1961,86, 98,99 SS 7270 2140 Stream Alswear F River Mole Buildings & Highway 2000 SS 7240 2215 Huntacott nr Chulmleigh F Huntacott Water Highway 1980 SS 6990 1435 Wampford F River Mole Highway 1983 SS 6970 2240 Newtown F River Bray Building 1970 SS 6930 3240 Challacombe F River Bray Buildings 2000 SS 6929 4084 Highway, 3 fatalities Shallowford F River Bray 1952,83 SS 6820 2860 (52) Clapworthy F River Bray Highway 1994,96 SS 6761 2676 Bray Bridge F River Bray Highway 1983,94 SS 6750 2570 Parracombe Bridge F River Heddon Unknown 1996 SS 6680 4480 Kings Nympton near F River Mole Buildings 1982,83 SS 6669 1850 Junction Pool Colleton Mills F River Taw Highway 1996,83 SS 6635 1555 Kershaw Bridge F River Taw Highway 1983,04 SS 6630 1340 Bridge Reeve F River Taw Building 2000,04 SS 6630 1340

F – Fluvial L – Land drainage D – Surface water drains North Devon Council/ Torridge District Council Strategic Flood Risk Assessment

Location Cause Watercourse Flooded area Date Grid Ref. Bratton Flemming L Land Highway 1996 SS 6460 3780 Abbotsmarsh F River Taw Land 1996 SS 6400 1950 Hawkbridge Breakneck nr Stowford F Highway 1983 SS 6390 2680 Brook Winsford F Mully Brook Highway 1983 SS 6380 1540 Presbury F River Taw Highway 1983 SS 6250 1960 Portsmouth Arms A377 F River Taw Highway 2004 SS 6213 1918 Kentisbury Ford F Stream Highway & Building 1975,83,96 SS 6180 4270 Harford Cross F Stream Highway 1983 SS 6050 3170 Black Gate Arlington F Stream Highway 1983 SS 6031 4044 Hawkridge F River Taw Highway 1983 SS 5940 2540 Bridgetown Chapelton F Langham Lake Highway 1983,85,96 SS 5790 2610 Waytown D Land Highway 1996 SS 5780 3330 Newbridge F River Taw Highway 1996 SS 5770 2760 Fisherton Bridge F River Taw Highway 1980 SS 5730 2790 Langridgeford F Langham Lake Highway 1983 SS 5720 2240 Berrynarbor F Stream Highway & Buildings 1996,99 SS 5600 4670 Sterridge Valley F Stream Building 1993 SS 5590 4640 Berrynarbor Sawmills nr Berrynarbor F Stream Highway 1980 SS 5580 4750 North Lee Berrynarbor F Stream Buildings 1993,96 SS 5575 4675 Milltown Muddiford F Colam Stream Highway & Buildings 2004 SS 5547 3887 Ashford A361 L Land Highway 1983 SS 5310 3460 B3343 Mullacott L Land Highway 1980 SS 5080 4430 Lee Bay Sea Front T Sea Seafront 1996,02 SS 4797 4647 1910,24,53,55, Instow T Sea Seafront & buildings 67,77,81,82,84, SS 4720 3050 85,90,93,2000, Instow Lyndale Terrace L Land Buildings 2004 SS4720 3050 & Anstey Way Westleigh T Sea Highway 1981 SS 4690 2920 Woolcaombe Woolcaombe F No Details 1974 SS 4600 4350 Stream Woolcaombe Woolacombe F No Details 1996 SS 4600 4300 Stream Georgeham F Croyde Stream No Details 1931 SS 4440 3900 Lee Bay T Coastal Seafront 1996 SS 4797 4648 Lee Bay T Coastal Seafront 2002 SS 4797 4648

F – Fluvial L – Land drainage D – Surface water drains T – Tidal