six areas where water companies interests align …...2017/06/04 · six areas where water...
TRANSCRIPT
Six areas where water companies interests align with the CaBA (there will be more!) David Johnson C.Eng and MICE. Rivers Trust.
Q1: Does catchment management work? Think SAB Miller
Q2: Do you have enough data to understand water company issues? There is lots of evidence that can be used.
Q3: Time to talk to the Engineers? Is catchment management + engineering the way forward?.
1) Sewer capacity and CSOs. The problem a CaBA could help with.
Ø Peak runoff exceeding hydraulic capacity of the sewer => Ø Sewer flooding or Ø Discharges from CSOs.
Ø Not all flooding can be helped by NFM measures. Ø Design the NFM to suit the problem.
1) Sewer capacity and CSOs. Data and tools.
Ø CaBAdatapackageØ Talktotheengineers,whatyouwantisalistofDG5sandproblemCSOswhereupstreammeasurescouldhelp.Ø Needthesewershedfortheissue(assetdatabase)
DefraUrbandemonstrator
1) Sewer capacity and CSOs. Case study and potential trip hazards.
Ø NFMmodellinginManchesterhelpstoquanGfythepotenGalbenefitofSuDSandfocuseffortwhereitcouldmakethemostdifference.Ø 10%reducGoninpeakrunoffonagoodday.Ø Engineersknowwhichissuescouldbehelpedbyreducingpeakrunoff.Ø MulGplebenefits(NIAandGreeninfrastructure)Ø WhataboutGWflooding,donotswaponeproblemforanother
1) Sewer capacity and CSOs. Case study and potential trip hazards. Strategic approach….
Mapsiden*fywhereSuDShavethegreatestpoten*al
NaturalCourse2017
1) Sewer capacity and CSOs. Case study and potential trip hazards.
NaturalCourse2017
2) Nitrate in groundwater. The problem a CaBA could help with. Ø GWisthebestsourceofdrinkingwater,lowcarbonandminimaltreatment.Ø Nitratecomesfromag,urbanandaerialdeposiGonØ MostofthefocusisonagriculturallandmanagementØ Groundwaterqualityiscomplexsoadiagramishelpful=>
EAWaterResourceStrategy2008
the umbrella body of the rivers trust movement
where there’s water, there’s life
HowthenaturalGWsystemworks:Groundwaterqualityisaffectedbylandmanagementandabstrac*onmanagement.
2) Nitrate in groundwater. Data and tools.
Ø SafeguardZones(canbeconfusing)Ø NEAPNnitrateloadØ FARMSCOPERØ DefraevidencereviewØ WatercompanieshavealistoftargetgroundwatercatchmentsforNØ Whataboutmonitoring?
2) Nitrate in groundwater. Case study and trip hazards
Ø 10%onagoodday!BerealisGc.Covercropcalc.Ø ButcandoalotmoreinsmallareasandiftherearehighlossacGviGes.Ø Hierarchyofasksbasedon40yearsofresearch!Ø DiluGonisthesoluGontopolluGon…Ø MulGplebenefitsfrommanyofthebestmeasures….Ø OneofthebestcasesforaCaBA
Manuremanagement.MinimalmanureinGWcatchment=>NoautumnapplicaGon=>LowNmanure=>slurryorpoultrylicer.Autumncover.Earlyautumnestablishment=>Covercrops=>‘greeningup’=>lateharvestbaresoil.Nutrientapplica*on.Low-opGmalnutrientapplicaGon=>Precisionnutrientmanagement=>fullevaluaGonofmanures=>InsuranceapplicaGonforyieldorquality.
Landuse.Woodland=>permanentpasture=>lowleachingcrops=>highleachingcrops=>plough-uporoutdoorpigs
2) Nitrate in groundwater. Case study and trip hazards (hierarchy)
3) Pesticide in SW. The problem a CaBA could help’ Ø PesGcidemoreofaprobleminSW(drinkingwater)Ø Veryexpensivetreatment,OzoneandGAC.Ø Catchmentmanagementisaboutusage,GmingandgoodpracGce.
CSFEvaluaGon2014
3) Pesticide in SW. Data and tools Ø SgZinCaBAdatapackageØ PesGcideusagesurveyØ LocalfarmeroragronomistsurveysØ FARMSCOPERandScimap(foolserrand?)Ø Itisall(wellnearlyall)aboutusage…
3) Pesticide in SW. Drinking water. Case study and trip hazards.
Ø Highlycomplex(2stepsforward1stepback)Ø VariesyearonyeardependingonusageandGmingandsoilcondiGons/weatherØ NeedsalongtermapproachwhichaimstoreduceusageofeachacGveingredient.Ø Movetowardscontractors?Ø WhatarethemulGplebenefits?Ø OperaGngrules+CM
4) Phosphate in surface water. The problem a CaBA could help with
Ø NewPstandardsinSWmeanthatPstrippingwillberequired.Ø ThesmallertheworksthemoreexpensiveeachkgofPistoremove.Ø CanweremovePfromlandmorecheaplyusingaCaBA?Whatistheopportunity?
• NewPstandardsmeanthatPstrippingwillberequired.
• ThesmallertheworksthemoreexpensiveeachkgofPistoremove.
• CanweremovePfromlandmorecheaply?
• 10%onagooddayin20yearsGme…..
• TakesalongGmeduetosoilstore.
• Takesevenlongerduetosedimentstore.
• MulGplebenefits(soilretenGon,reducedagcosts,sedimentreducedandhabitatcreated.
4)Phosphateinsurfacewater.Dataandtools
• CaBAdatapackage• PSYCHIC• SAGIS• CaMMPHub• FARMSCOPER• Scimap
4)Phosphateinsurfacewater.Casestudy
M o s t effectivemeasure
Measure P e r c e n t a g e improvement in phosphorus lost to the river
I s i t c o s t e f f e c t i v e ? Ranked mos t costly (5) to least costly (1)
1 Use slurry injection application techniques
20% 5
2 Do not spread slurry or poultry manure at high-risk times
10% 1
3 Construct bridges for l i v e s t o c k c r o s s i n g rivers/streams
7% 3
4 Capture of dirty water in a dirty water store
7% 4
5 Fence off rivers and streams from livestock
6% 2
4)Phosphateinsurfacewater.Casestudyandtriphazards(thinkabout+metoimprove)
1 2 3 4 5 Nitrate
(%) 12 5 5 5 4
Phosphorus (%) 20 10 7 7 6
Sediment (%) 0 0 0 0 0
Ammonia (%) 25 0 0 0 0
0
5
10
15
20
25
30
Nitrate (%)
Phosphorus (%)
Sediment (%)
Ammonia (%)
5) Low flows and reducing abstraction. The problem a CaBA could help with.
Ø EveryMl/dayofwaterisworth~£1Mperannumtoawatercompany.Ø ReducingabstracGonisnotideal.Ø Canwemakeriversresilienttolowflowsratherthanputwaterbackinthem?
EnvironmentAgencyWaterResourcesStrategy,2008
5) Low flows and reducing abstraction. Data and tools.
Ø CAMSwaterresourcestatus.Ø AbstracGonsØ Lowflowstudyareas?Ø TheEAweregoingtopublishguidance?Ø TherearesomecasestudiesinthenSE
6) The eel regulations. Could a CaBA help?
Ø WatercompanyassetshavetocomplywitheelregulaGons.Ø ConsultantreportsthathighlightstructureswithlicleupstreamhabitatØ Amorecatchmentbasedapproachtomaximiseeelhabitataccess.
6) The eel regulations. Data and tools and case study.
Ø Prioritybarriers(EA)Ø GISmappingtoidenGfyamountofupstreamhabitat.Ø PopulaGon,habitatandpass-abilitystudies.
Q1: Does catchment management work? Ø Modest improvement Ø But there is not an alternative....think SB Miller
Q2: Do you have enough data to understand water company issues?
Ø CaBA data package is a start but there is alot more out there.
Q3: Time to work with the Engineers. Catchment management + engineering is the way forward. Ø Engineering will do the heavy lifting. Ø Engineers like numbers and evidence Ø They also like solving problems
1)NFMsewercapacityandCSOs.Dataandtools.
Whatdataisavailable?• CaBAdatapackage• Talktotheengineers,whatyouwantisalistofDG5sandproblemCSOswhereupstreammeasureswillhelp.
• Needthesewershedfortheissue
Whattoolsareavailable?• TUFLOWespifitispartofaSWAMPassessmentwithaboveandbelowgroundinfrastructure#Infoworks#
• JFLOW.UsedforSWfloodmapsandNFM
• Another
Graphof
FlowvsTime
atLocaGonA
A
3)PesGcideinSW.Drinkingwater
• Whatdataisavailabletoyou
• SgZinCaBAdatapackage• PesGcideusagesurvey• Localfarmeroragronomistsurveys
• Itisall(wellnearlyall)aboutusage…
• Whattoolsareavailable?• Farmscoper• Scimap?• Modelsnotashelpfulforsuch
3)PesGcideinSW.Theproblem
• PesGcidemoreofaprobleminSW(Gme)
• Veryexpensivetreatment,OzoneandGAC.
• CatchmentmanagementisaboutamountandGming
• Notthatmuchofaproblemfortheecology?