using natural processes to reduce flood risk · using natural processes to reduce flood risk ......

Usingnaturalprocessestoreducefloodrisk

experiencesfromTrentRiversTrust…….

RuthNeedham,TrentRiversTrust

ExperiencesfromTrentRiversTrust

• Whatis‘WorkingwithNaturalProcesses’(WWNP)• WhydoweneedWWNP?• WhyisitofinteresttoTrentRiversTrust?• Howtogoaboutit• Somecasestudies• Asummary

Whatis‘WorkingwithNaturalProcesses’

Inthecatchment

Changingandmanagingthesurface(increaseporosity)

Promotinggoodsoilmanagement,reducingcompaction

Impedetheflow

Createstorage

Sourcecontrol– workwheretherainfalls

AppliesinruralAND urbanareas

Atorinthe

channel

Slowornarrowtheflow

Increasetheroughness(friction)

Reducetheconveyance(speed)

WhydoweneedWWNP?Rangeofbenefits• Floodrisk• Improvedwaterquality• Createshabitat• Reduceserosionandsoilloss• Providesafocusforpeopleandcommunities• Cheapertobuildthantraditionalfloodmanagment schemes• Legacy?Longtermawareness?

Needtobroadenourapproachtowatermanagement• Increasingfloodrisk• Channelsatcapacity• Needmorethan‘defendanddredge’• Climatechange• Soilloss• Incorporatearangeoftechniques• RequiresaCatchmentBasedApproach• Involvespartners– getseveryonethinkingaboutfloodrisk

WhyisitofinteresttoTrentRiversTrust?

• Deliversarangeofwaterbasedbenefits

• Easierandcheapertoworkwithsmallervolumesofwater

• Workatrangeofscales;site,landscapeandcatchment.Playstoourstrengths(workwithfarmers,communities,partners)

• Createschemesthatcomplimentthelandscape,bespokesolutionforindividualsites.Solutionsareunobtrusive.

Howtogoaboutit?Whatarethepitfalls?• Allowplentyoftimeforplanning• Funding– standardfloodriskfundingsourcesnotyettailoredwelltoNFM• Partnersupport– workwithrangeofstakeholders• Uselocalknowledge,carryoutadeskstudy• Makethemostofthedata(+/- ofmodelling)• Secureagreementfromlandowners• Becreativeaboutincentives• Carryoutsurveyswellinadvance• Thinkaboutmaintenanceaspartofyourdesign• MayrequireLandDrainageConsent(LLFA)andPlanningPermission(LPA)• Includeanevaluatingandmonitoringplan,canbeexpensive

SCIMAPoutputs– highlightswherewateraccumulates

CaseStudySouthwellCatchmentProject

• Scopingandfeasibilityproject

• Farmadvisoryproject

• Capitalprojects

WillowBrookSitevisit!

CaseStudy SoarNFMproject

CaseStudy

LeicesterSUDS’n’SchoolsProject ShadyLaneArboretum,Leicester

Britain in Bloom New Landscape of the Year 2015 (East Midlands)

RainGardenattheStrutts Centre,BelperCaseStudy

LeisureCentre,MeashamCaseStudy

Front

Back

Before After

Insummary• Lotsofopportunities• Becreative• Needtoworkinpartnership• Engagewithcommunitiesandlandowners• Startplanningearlyon,don’tunderestimatepotentialforcomplications• Thinkaboutthemaintenance• Constructioncheaperthantraditionalsolutions• Longtermbenefits• Bringaboutsomeinspiringsites

Thankyou

RuthNeedhamEmailruth@trentriverstrust.orgMobile07773343635