Redcar & Cleveland Update on Friday 6th September 2013 Flooding Redcar & Cleveland Borough Council and Northumbrian Water Ltd
Presentation 11th December 2014 How The Extreme Weather Event Affected The Borough Flooding was experienced across the Borough including properties and businesses in – Redcar Marske – New Marske North Skelton – Guisborough Charltons – Yearby Village Loftus – Skinningrove Saltburn – Dormanstown
It also impacted on much of the strategic road network. Actions and investigations so far: Redcar: – April 2014 Redcar Surface Water Management Plan (SWMP) produced options for flood water storage at Plantation Road / Crestwood Road and Limerick Road, Dormanstown. – October 2014 Fleet Beck, hydraulic model produced. – St Joseph’s Court, option investigated to divert flood water to field adjacent to the estate. Sandbag store and sandbags provided. – Gap in mound along south side of Plantation filled in. – Surcharging section of West Dyke Culvert exposed and repairs undertaken. – Proposal to undertake improvements to culvert as part of development of Redcar EDC site, Corporation Road. – Result of investigations shared with SSI and TATA to identify improvements and maintenance on their land. Actions and investigations so far:
Greater Eston: – SWMP investigated flooding at Whale Hill and Flatts Lane / Cross Beck / Church Lane, produced options for flood water storage and culvert upsizing. – Tees Dock Road highway drainage hydraulic model produced, report due early 2015. – Tees Dock Road, abandoned water main in Kinkerdale Beck removed. – Flood Management Plan being developed by RCBC & PD Ports. – PD Ports have purchased pumps to deploy in adverse weather. – Culvert jetted to remove ochre at Granwood Road area. Actions and investigations so far:
Guisborough Area: – SWMP produced for Guisborough and surrounding area. – Options for Hutton Lane culvert diversion and upstream storage, upsizing of culvert and flood storage at Charltons. – Condition survey of culverted watercourse at Lucia Road area completed. – Natural Flood management being investigated in conjunction with Tees Rivers Trust. – Community engagement in Charltons to develop Community Flood Action Plan. Actions and investigations so far:
Marske, New Marske and Yearby: – Draft SWMP received December 2014. – Investigated flooding at the three locations and produced options for flood water storage on Long Beck, playing fields above New Marske and former NWL reservoir west of Longbeck Lane. – Culvert south of Cat Flatt Lane investigated and footpath alterations agreed to reduce flooding. Joint investigation with Network Rail to identify possible flood alleviation from rail crossing ongoing. – Sewer repairs, highway drainage improvements and footpath alterations to reduce flooding in New Marske, further works ongoing at present. – Community engagement in New Marske planned to develop Community Flood Action Plan. – Ditching work in Yearby and drainage cleansed. Actions and investigations so far:
North Skelton: – Consultant appointed to undertake flood investigation which includes inspection and CCTV survey of drainage systems and identification of possible solutions. – Meeting has been held to discuss and demonstrate property level flood protection measures. – Community engagement has taken place and RCBC are working with the community to develop a Community Flood Action Plan. – Ward Members have purchased 200 Aqua-Sacs as a resource for the community to use in any future flood events. Actions and investigations so far: Loftus: – Proposals to repair damaged bridge on Gaskell Lane developed, final solution dependant on NWL works to divert sewer. – Arrangement with Kirklevington Prison being developed to remove debris from Middle Gill. – Work to replace Footbridge over Middle Gill on Public Right of Way in progress. – Removal of bridge debris from watercourse has been approved and work is currently being planned. Skinningrove – Mill Lane bridge repaired. – Jetty and coastal defence scheme in process of being put out to tender. Actions and investigations so far:
Saltburn: – Joint investigations of drainage systems have been undertaken by NWL and RCBC and repairs carried out. – CCTV surveys and cleansing of culverted watercourse in Princess Road / The Crescent have been undertaken. – Repairs carried out to culvert on Guisborough Road / Marske Mill Lane. – Camfields retaining wall to be repointed in December. – Works are planned for Saltburn Valley Gardens / Skelton Beck and Millholme Beck to remove brash and logs from watercourse. – Scheme agreed to repair & strengthen forest halt beck sides and realign beck. – Saltburn Road bridge debris and sand to be removed from watercourse. Future Actions
Redcar Re-grading of The Fleet to remove reverse gradient which is hydraulically very poor and modification of several structures which currently have perched invert levels which will tend to raise upstream water levels. There are two possible options at present for diverting The Fleet in a northerly direction direct to the North Sea, no feasibility has been undertaken on these options yet. St Josephs Court Improvement Option. Dormanstown Flood Storage Area. Roger Dyke Flood Storage Area. Further modelling study of West Dyke Culvert is required to aid in developing flood alleviation options including storage. KEYPLAN [Not to Scale] North
The Fleet Diversion Option B
The Fleet Diversion Option A
Site Location
1.TheNotes: contours on this drawing (denoted by thin brown lines) have been generated from LIDAR data and are at 2m intervals. 2. Public sewers are not shown on this drawing.
Location of outfall unknown The Fleet
Approximate former route of watercourse 675mm diameter culverted watercourse LEGEND
A1085 Highway Drain Approximate Area of De-silting/dredging works A1085 Prone to Flooding undertaken on 13 May 2013 by RCBC Recently De-silted/Dredged Main spine drain Ditch in A1085 The Fleet Diversion Outfall from A1085 Options highway drain Contour Line
Culverted Blocked culvert Watercourse Contains Ordnance Survey data © Crown Copyright and database right 2013.
Approximate area of A1085 prone to flooding
Twin 450mm diameter culverted watercourse
2.1m wide x 1.2m high box culvert with screen Drg. No. 2012s5880-12 A1085 GENERAL [Not to DRAINAGE DETAILS AND Scale]A1085 Drainage & The Fleet Diversion THE FLEET DIVERSION OPTIONS North Keyplan Not to Dormanstown Flood Storage scale
Existing twin 450mm dia culvert with trash screen
Earth embankment crest level = Cut off flow along 8mAOD exisiting drainage ditch
Existing Culvert Site entrance with trash location screen Notes (Box culvert:2m 1.The location of foul sewers, surface water x1.05m) sewers, combined sewers shown on this drawing New interceptor have been taken from Northumbrian Water Ltd's Outfall from storage ditch (NWL's) digital records. area 450mm dia pipe Reverse fall of 2. The contours shown on this drawing are at 0.5m restricting flow to 637l/s existing drainage intervals. ditch Flood Storage Scheme - Main Details 1.Volume of storage required to attenuate 100-year plus climate change storm = 67,177m3 (assuming allowable 'on flow' of 637 l/s). 2. The blue area on this plan would provide 82,626m3 Staintondale at a Top Water Level (TWL) of 7.5mAOD. Refinement Access TWL = Drain of the area will be required if the scheme track 7.5mAOD progresses. 3.An emergency overflow would need to be provided (not shown on this drawing). Existing 4. A penstock would also need to be provided to drainageditch draw down the level in the FSA in an emergency Divert section (e.g. if the outlet became blocked). Dormanstownof Embankment Beck Legend
Site Watercourse compound(25mx50m) New Watercourse
Flood Storage Area (@ TWL)
Contains Ordnance Survey data © Crown copyright and database right (2013)
Dormansto wn Beck Legend (Continued)
NWL Surface water sewer
NWL combined sewer Drg. No. 2012s5880-11 Dormanstow nBeck Access Track Dormanstown Beck, Redcar - tributary General drainage features and Scale Site Compound 1:4,50 scheme details 0 North Keyplan Not to scale
West Dyke Culvert
Outlet restricted to 0.498 m 3/s New drainage ditch to drain storage area
Site location Notes Available volume within storage area = 1.The location of foul sewers, surface water 60,500m3 sewers, combined sewers shown on this drawing have been taken from Northumbrian Water Ltd's (NWL's) digital records. 2. The contours shown on this drawing are at 0.5m intervals. Flood Storage Scheme - Main Details 1.Volume of storage required to attenuate 100-year plus climate change storm = 52,817m3 (assuming allowable 'on flow' of 0.498 m3/s). TWL = 2.The blue hatched area on this plan would provide 22mAOD 3 Earth dam - Crest level = 60,500m at a Top Water Level (TWL) of 22mAOD. Refinement of the area will be required if the 22.5mAOD scheme progresses. 3.An emergency overflow would need to be provided (not shown on this drawing). 4. A penstock would also need to be provided to draw down the level in the FSA in an emergency (e.g. if the outlet became blocked). 22.5mAO Legend D Earth Dam
Roger Dyke
New Drainage Ditch Roger Dyke Flood Storage Area (@ TWL)
Contains Ordnance Survey data © Crown copyright and database right (2013)
Legend (Continued)
Recorded Flooding Incident
West Dyke Culvert Drg. No. 2012s5880-10
NWL Public Surface Water Sewer Roger Dyke, Redcar - General drainage features and scheme details Roger Dyke Flood Storage NWL Public Combined Scale 1:3,00 Sewer 0 Future Actions
Greater Eston Tees Dock Road highway drain upsizing. Whale Hill Area flood storage. Flatts Lane/Cross Beck/Church Lane flood storage and culvert upsizing (Eston Area). Triple 1200mm diameter KEYPLAN [Not to Scale] (approx.) outfall pipes North (one disused)
1 2 Proposed outfall point 1 from highway drain 0 Pink catchment area (same as existing) 8 assumed to drain to SLEMS by independent outfall Site Location 1200mm wide x 200mm deep (approx) outfall to NOTES SLEMS (heavy siltation) 1. The contours shown on this drawing (thin blue lines) are at 2m intervals. 1 Broken rain water pipe 0 SLEMS = South Lackenby Environmental Management Low spot (may be causing additional Service runoff down embankment 8 and onto Tees Dock Road) LEGEND
Orange Catchment Additional runoff from Area 13,720m2 seepage through roadside (1.37ha) 6 Green Catchment earth embankments Area 12,540m2 (1.25ha) Pink Catchment Area 7,767m2 Tees Dock Road (0.77ha) 8 High point (7.3 Recorded Flooding Incident mAOD approx) Direction of Fall/Runoff 600mm Diameter Main Spine Drain (approx. total length = 657m)
750mm Diameter Main Spine Drain (approx. total length = 640m)
Manhole
Chamber
Existing Culvert
Contains Ordnance Survey data © Crown copyright and database right 2012 Low spot
10
6 Drg. No. 2012s5880-4 8 TEES DOCK ROAD, ESTON. DRAINAGEGENERAL FEATURES AND [Not to Tees Dock Road Drainage Improvement SCHEME DETAILS Scale] KEYPLAN [Not to Scale] North
Existing culvert to be renewed and re-laid so that the outlet invert level Site Location is above top water level in upper NOTES
storage area. Tributary B 1.The location of foul sewers, surface water sewers, combined sewers and culverted watercourses shown on this drawing have been taken from Northumbrian Water Ltd's (NWL's) digital records. 2. The contours shown on this drawing are at 2m intervals. 3.This drawing should be read in conjunction with Drawing Lower flood storage area with New ditch to divert flood Number 2012s5880-7b. 225mm diameter throttled Flood Storage Scheme - Main Details flows from Tributary B to 1.Volume of storage required to attenuate 100 year plus outlet to existing culvert flood storage areas on climate change storm = 8,139m3 (assuming allowable 'onflow' of 38 l/s). Cross Beck 2.The blue hatched areas on this plan would provide 8,139m3 of storage assuming the flood storage areas are 1.5m deep (with flat bases) and a Top Water Level (TWL) of 60.5mAOD in the Upper flood storage area with upper flood storage area and 50.2mAOD in the lower flood 225mm diameter throttled outlet storage area. 3.Emergency overflows from both storage areas would need to to lower flood storage area be provided (not shown on this drawing). 4."Dry Weather Flow" to be maintained along Tributaries A and B for ecological benefit. 5.All works to be designed and constructed in accordance with Sewers for Adoption 7th Edition (Water UK/WRC plc, 2012) and Civil Engineering Specification for the Water Industry (CESWI),LEGEND 7th Edition.
Flood Storage Areas (5,426m2 approx. (in total))
Recorded Flooding
Incident Existing Culvert NWL Public Surface Water Sewer New ditch to divert flood NWL Public Combined flows from Tributary A to Sewer NWL Public Foul flood storage areas on Sewer Cross Beck Contains Ordnance Survey data © Crown copyright and database right 2012
LEGEND (Continued) Tributary A Existing Culvert to be Renewed on Existing Route
Existing Culvert to be Grouted up and Abandoned Drg. No. 2012s5880-7 225mm Diameter Outlet Pipe CROSS BECK, ESTON. GENERAL from Flood Storage Area Cross[Not to Beck Flood Storage DRAINAGE FEATURES AND Scale] New Ditch SCHEME DETAILS Future Actions
Guisborough Area
Charltons – Remove numerous Culverts and create Fords. – Create Flood Storage to upland fields.
Guisborough – Hutton Lane culvert diversion and upstream storage. – Natural Flood Management within Woodland. KEYPLAN [Not to Scale] North 600mm diameter outfall pipe to Jocks Row Beck
Assumed route of culverts (exact route, size, depth and condition unknown) Site Location NOTES
Culvert Replacement Scheme - Main Details
1.Upsize 450mm diameter culvert to 600mm diameter MH3 between inlet to culvert and MH3 (on existing route). 2.Upsize 600mm diameter pipe to 750mm diameter between MH3 and outfall to Jocks Row Beck. 600mm diameter approx (by eye) culvert. 3.The need for an inlet trash screen should be properly assessed MH2 and designed in accordance with the Culvert Design and Route, size, depth, condition, purpose, catchment Operation Guide (Ciria, 2010). area and ownership of upstream culvert unknown 4.All works to be constructed in accordance with Sewers for Existing 450mm Adoption 7th Edition (Water UK/WRC plc, 2012). Upstream Storage Scheme - Main Details diameter culvert 1.Volume of storage required to attenuate 100 year plus climate change storm = 1,871m3 assuming allowable 'onflow' of 250l/s. 2.Blue hatched area on this plan would need to be 800mm Gulley/MH Small bore pipe outlet from storage deep (with a flat base) to provide 1,871m3 of storage. MH1 3.An emergency overflow from the storage area would need to area connected to Gulley/MH be provided (not shown on this drawing). 6" interceptor drain (could be retained 4.Toe drains would be required along the entire length of the toe of the 'dry' side of the earth banks (with suitable 450mm diameter inlet and improved for use as toe drain outfall outlets). pipe with screen or returned to open ditch) LEGENDCulvert Approx plan area of Direction of storage area = 2,462m2 Runoff Potential Location for Flood Storage Approx location of existing Area spill point of surface water Manhole off road into field Earth Bank (with clay core) Small Bore Outlet Pipe
Existing 6" Interceptor
Drain Contains Ordnance Survey data © Crown copyright 225mm diameter pipe and database right 2012 beneath access track
Twin 600mm 1200mm wide x 300mm diameter pipes high (approx) box culvert (partially blocked with silt and brick rubble) Drg. No. 2012s5880-3 [Not to CHARLTONS GENERAL Scale] Charltons Flood Storage & Drainage ImprovementsDRAINAGE FEATURES AND SCHEME DETAILS Future Actions
Marske, New Marske and Yearby
Flood storage on Long Beck (Gurney Street). Overland runoff Storage from playing fields above New Marske. The feasibility of utilising the former NWL reservoir (located west of New Marske) as a flood storage to alleviate flooding to Yearby Village. Various sewers converge at manhole (see General \ Drg.No.2014s1144-02). Notes Arrangement does not correspond with NWL sewer map. Further 1. The location of foul sewers, surface water sewers and combined sewers investigation required if scheme A Discharge to NWL surface water sewer. shown on this drawing have been taken from Northumbrian Water Ltd's progesses. Discussions would need to be heldwith (NWL's) digital records. NWL regarding discharge rate if scheme Flood Storage progresses. 1911/s used in this study. Scheme North 1. Volume of storage required to attenuate 100-year plus climate change Storm = 16,026m3 (assuming an allowable 'on flow' of 191 1/s). 2. The blue hatched area on this plan would provide 20,890m3 at a top water level of 34.5mAOD. Refinement of the area will be required if the scheme progresses. Access track 3. The emergency spillway on this plan is for diagrammatic purposes only. 4. An emergency penstock would also need to be provided to draw down the Spillway from storage reservoir. level in the reservoir in an emergency (e.g. if the outlet became blocked). \ S e e p l a n A----- 5. All works to be constructed in general accordance with Civil Engineering Earth Embankment Point of discharge yet to be determined. Specification for the Water Industry (CESWI) 7th edition. Keyplan (not to inset scale) (!}) .,. North Existing road Site compound to Pontac } Farm
Permanent NWL surface water sewer from access track New Marske {670mm x 670mm for future maintenance
Gurney Embankment Street Tributary to Long Beck Crest level = (size I depth unkown) 35mAOD
\ \ \\ D Locatio Existing ditch heavily overgrown. 35mAOD n Vegetation removal and \ contour re-profiling of banks required
\ \\ .r--- Utilise existing car park for site compound Existing pipe (approx 300mm 0) . Replace pipe with open ditch.
\ \ \ \ Scale 1:1000 \ \ Legen B d \ NWL Public Combined Sewer NWL Public Surface Water Sewer
-- NWL Combined Sewer Existing ditch heavily overgrown. Overflow Vegetation removal and Crown copyright and database rights 2014 Ordnance Survey re-profiling of banks required I © Potential clash with Outlet from new 450mm 100019153. services in Kingsdown 0 Way. Further pipe to existing ditch. Kingsdown Way - - - I investigation required if -, scheme progresses. '""\
Rev. Modifications Date Drawn Designed Checked Approved J I r Alternative route. May II ------lr------====---- be feasible due not conservatories,to patios South Bam See plan '\ Broughton Hall \\ and driveways SKIPTON connected to the North Yorkshire BD23 3AE B inset adjacent properties United Kingdom www.jbaconsulting.com
t +44 (0)1756 799919 i \ f +44 (0)845 8627772 '\ - --- :-_}jsA --- Pipe sections conveying flows from e [email protected] -- toe drain below former tip to Hartech Long Beck I Grove Offices at Atherstone, Doncaster, Edinburgh, Haywards Heath, Limerick, Newcastle upon Tyne, Newport, Saltaire, Skipton, IJ Tadcaster, Thirsk, Wallingford and Warrington ..... N e w 4 5 0 mm 0 pipe ------fur------r= \_ running along Harlech < Grove and Kingsdown ===>---REDCAR AND Way to discharge into 0 Long Beck. CLEVELAND '"0_,0@' Former tip. Issues with iron ochre in {;GH cO<) .;/ this area. Further investigation would \\ BOROUGH COUNCIL be required if the scheme ' progresses. \ ( MARSKE, NEW MARSKE AND YEARBY SWMP LONG BECK FLOOD STORAGE SCHEME \ \ ..... ' ( \ \ This document is the property of Jeremy Benn Associates Ltd. It shall not be reproduced in whole or in part, nor Toe drain consisting \ \ \ disclosed to athirdparty, without the permission of Jeremy Benn Associates Ltd. of 225mm 0 perforated Scale: Drawn: GHodsonG Hodson 24110/2014 plastic pipe in gravel filled Designed: As Shown @A1 24110/201 trench Checked: DC Stark \ Two legs of toe 4 General Plan Approved: T D E Sherwood 24/10/201 Longbeck Flooddrain Storage converge at 4 I manhole Digital File 25111120 Name:Drawing Number: 14 2014s1144-Long_Beck_FSA.dwgRev.: Sheet No.: Status:
Scale: 1:2500 Scale 2014s1144-03 1of 1 DRAFT 1:1000 Longbeck Flood Storage Future Actions
North Skelton
Preliminary investigation of flooding problems. Further CCTV survey works required. Ongoing consultation with Tees Components Ltd. Interim report to RCBC in January 2015. GeneralNotes
1. CCTVSurveyundertakenbyLanesforDrainsLtdon23September2014.The surveywassupervisedbyGavinHodsonofJBAConsultingLtd Watercoursecontinues tothebeck North Skelton Study DetailPlan-A
MH7 - Assumedlocationof manhole.CCTVsho ws manholeonbothleg s. Manholenotvisiblea bove ground
Approximatelocationof outfall. Unabletolocateoutfalld ueto densevegetation.
MH6-Manholeleadingto largechamber
Assumedrouteofpipe.
Treerootingressandpartial MH5-ManholeinHolmbeck collapseofpipe. Road BSluorcvkeaygsetowpi ptheindp,biploecskuargvey swtiothpipnepdip.e Surveystopped,blockage Longitudinalcrack withinpipe MH4
450mm 0 pipe
Surveystopped,blockage 450mm 0 pipe MH7-Assumedlocationofburied withinpipe MH6-Manholenoton manhole.Novisiblesignsof system.Opensoutintolarge manholeaboveground.Located A chamber.Heavilysiltedup. approx10.5mfrommanholein Highlevelincomingpipe.No HolmbeckRoad. evidenceofanyotherinlet pipes.
MH3-Manholetothe rearofnumber35 Longitudinalcrack HolmbeckRoad Longitudinalcrackalongpipe sectionimmediately downstreamofmanhole chamber. MH4-Manholelocatedin footpath.Notonmain Pipeintrusion system.Shallowchamber withseveralpipeinflows (150mm 0). Heavily silted up MH5 -Manholelocatedon lefthandlegofculvertin MH3-Manholelocatedto HolmbeckRoad therearofnumber35 Culvertinlet HolmbeckRoad.
Scale1:250
Legend
Unabletoinspectinlet.Gate CCTVsurveyofculvertcomplete toallotmentpadlocked. NoCCTVofculvert
ALLOTMENTS
Pipeintrusionatbendinpipe onleftlegoftheculver t (possiblyfromroddingeye Approximaterouteof besidenewwall) watercourse,heavily overgrown,notpossibleto inspectduetodense vegetation
Outfalllocated,heavil MH2 -Manholechamberheavilysilted.Not y Rev. Modifications Date Drawn Designed Checked Approved possibletoconductCCTVsurvey.Direction overgrown.Sizeofpipeunknown ofpipesnotconsistantwithmanholebeing itisnotvisiblefromoutlet locatedonmainculvert. SouthBarn BroughtonHall SKIPTON NorthYorkshire BD233AE UnitedKingdom
+44(0)1756799919 +44(0)8458627772 [email protected]
AssumedroutepipefromTees for Componentstotheoutfallinthe allotments REDCARANDCLEVELAN D BOROUGHCOUNCIL TEESCOMPONENTS MH1-Manholecover comprisedoflargesteel NORTHSKELTONFLOODINVESTIGATION sheet.Liftingequipment requiredtomovethecover. CCTVSURVEYOBSERVATIONS Furtherinvestigationneeded toinspectinsidemanhole. ThisdocumentisthepropertyofJeremyBennAssociatesLtd.Itshallnotbereproducedinwholeorinpart,nordisclosedtoa thirdparty,withoutthepermissionofJeremyBennAssociatesLtd. Drawn: GHODSON 201 Scale: 120 AsShown@A1 14 Designed: GHODSON 201 120 Inlettopipe,pieptoosmallto DigitalFileName: 14 survey.Smallercamerarequired. 2014s1221_North_Skelton_CCTV_Notes.dwgChecked: DSTARK 201 itisassumedpipeoutfallsin DrawingNumber: Rev.: SheetNo.: 120 allotments.Furtherinvestigation 14 requiredtoproveconnectivity 2014s1221-06 Approved: DSTARK Statu 201 Scale1:100 120 0 s: 1of1 Draft 14 Future Actions
Loftus & Skinningrove Skinningrove – Jetty and coastal defence scheme starting 2015.
Loftus – Gaskell Lane Bridge Repairs. – Natural Flood Management South of Rail line in Loftus & Rosecroft Woods. Future Actions
Saltburn
Saltburn Valley Gardens / Skelton Beck and Millholme Beck clean up and improvement scheme. Natural Flood Management Skelton Beck. Any questions?