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IntegratedAssessmentonWaterLevelVariabilityandCoastalBluffErosionin
NorthernMilwaukeeCountyandSouthernOzaukeeCounty,Wisconsin
UniversityofWisconsinSeaGrantInsHtuteUniversityofWisconsin-Milwaukee,SFS
UniversityofWisconsin-MadisonDept.ofCivilandEnvironmentalEngineering,
Dept.ofUrbanandRegionalPlanning,Dept.ofGeoscience
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ProjectLocaHon
Source:Popeetal.1999 Source:ASFPM,Mickelson
CityofPortWashington>>>
TownofGraCon>>>
CityofMequon>>>
VillageofBayside>>>
VillageofShorewood>>>
VillageofWhitefishBay>>>
VillageofFoxPoint>>>
Milw
aukeeCo
unty
OzaukeeCou
nty
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ThebluffsinnorthernMilwaukeeCountyaregenerallymorestablethanthebluffsinsouthernOzaukeeCounty
SouthoftheCityofPortWashington,OzaukeeCountyPhototaken4/6/201218:50:09April2012-577.53C.IGLD85Source:GreatLakesObliqueImagery
SchlitzAudubonNatureCenter,VillageofBayside,MilwaukeeCountyPhototaken4/7/201214:56:24April2012-577.53C.IGLD85Source:GreatLakesObliqueImagery
StatusandTrends• From1976to2007/08,armoringoftheLakeMichiganshorehas
increasedfrom9.6%to27.3%inOzaukeeCountyandfrom44.6%to62.7%inMilwaukeeCounty.
• From1976to2012,therehasbeenageneraltrendtowardsmorestablecoastalbluffsinthestudyarea.
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Theimpactofshorestructuresonneighboringproperty
TownofGraCon,OzaukeeCountyPhototaken4/6/201218:53:29April2012-577.53C.IGLD85Source:GreatLakesObliqueImagery
StatusandTrends• Inrecentyears,therehavebeenlegislaHvechangesin
Wisconsinthatfavoranincreaseinprivatepropertyrights.• TherapidriseinLakeMichiganwaterlevelssinceMarch2014
iscausingconcernamongpropertyownersandlocalofficials.
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ProjectFocusTheprimaryimpactareacoveredbytheintegratedassessmentrelatestotheinfluenceofchangingLakeMichiganwaterlevelsontheintegrityofcoastalbluffs.• placementanddesignofshoreprotecHonstructures
• bestpracHcesforbluffvegetaHon• regulaHonofcoastaldevelopment
• protecHonofnearshoreandshorelandhabitats
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InterdisciplinaryDriversEnvironmentalDrivers
• ChangesinshoreprotecHon&theassociatedrelaHonshiptocoastalprocesses
• PotenHalclimateimpactsonwaterlevels,waves,temperatureandprecipitaHon
SocialDrivers• InteracHonbetweenproperty
ownersrelatedtoshoremanagementchoices
• RecepHvitytoeducaHon,outreachandresilienceplanningefforts
Poli5calDrivers• IncreasedpoliHcalsupportfor
privatepropertyrights• Changestoplanning&zoning
legislaHonatstatelevel• Localandregionalplans
EconomicDrivers• Damagetocoastalproperty
andinfrastructure• Costsandbenefitsofshore
protecHon• Changesinpropertyvalues
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ProjectTeam• Ateamof9inves5gatorsrepresenHngdisciplinesincluding
coastalengineering,geology,urbanandregionalplanning,law,policystudies,ecology,landscapearchitecture,andsocialscience.(Hart,Janssen,Kehl,LaGro,Mednick,Mickelson,Ohm,Peroff,Wu)
• AddiHonalsupportfromstaffandstudentswithWisconsinSeaGrantandtheSchoolforFreshwaterSciencesatUW-Milwaukee.(Clark,Noordyk,Kranner)
• ProjectpartnersincludeorganizaHonswithbroaderperspecHvesoncoastalblufferosion,includingregionalandstateagencies,professionalassociaHons,andnon-profits.(SEWPRC,WisconsinCoastalManagementProgram,WisconsinDept.ofNaturalResources,WisconsinEmergencyManagement,Associa5onofStateFloodplainManagers)
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WIPlanningGrantAcHviHes• Interviewsofprojectstakeholders,partners,andinvesHgatorstoexploretheimpactsofvariablewaterlevelsoncoastalbluffs(May-July2015).– [19interviewswithafocusonissues,soluHons,barriers,andinfoneeds–intervieweesexpressedinterestineducaHonandoutreachtools]
• InvesHgatorspreparedsummaryofexisHngrelevantresearch,dataanddecisiontools(May-July2015).– [developedon-lineannotatedbibliography&report]
• WorkshoptoprovideinformaHonaboutGreatLakesWaterLevelsIntegratedAssessmentanddecidewhetherWisconsinshouldconHnueparHcipaHon(July27,2015)– [30aiended–strongsupportexpressedforconHnuingwiththeproject]
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Phase1ofIntegratedAssessment• SynthesisworkshoponMarch31,2016prioriHzedthemostrelevantreports,studiesanddatafortheIA.– Categories:ReportsaddressingcoastalhazardsinWisconsin;Technicalstudies(bluffstability,recessionrates,lakebederosion);Regulatoryapproaches;InteracHvemapping/visualizaHons;GeospaHaldata;IntegraHonresources
• ThePhase1reportincludesshortsynthesesoftheunderstandingof:– changestobeachandblufftoesduetohigherwaterlevels– impactsofshoreprotecHonstructures– changestotheblufffaceandblufftop,lakebeddownculng
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PreliminaryOpHonsWhatarepotenHalregulatoryandnon-regulatoryopHonsforrespondingtocoastalbluffs&lakelevelvariability?
ShoreandNearshore• Guidancefordesign
ofshoreprotecHon• PotenHalforpocket
beaches• Analysisoflakebed
erosion/changesinnearshore
BluffFace• BestpracHcesfor
bluffvegetaHonmanagement
• IdenHficaHonofblufffeederzones
TopofBluff• Amodelordinance
forsetbacksfromanerosionreferencefeature(vs.OHWM)
• Surfacerunoffmgmt• SepHcplacement
IntegratedApproaches• Integratedbluffmanagement/Regionalsedimentmanagement• OutreachonthespectrumofopHonsforbluffmanagement
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CommunityEngagementLedbyBertandLindaSHi(SHiFacilitaHons)andDeidrePeroff(WISGSocialScienceOutreachSpecialist)Part1–SeSngthecontextforcommunityengagement• Tourofthestudyarea(complete)• Individualandsmallgroupdiscussions(underway)Part2–Communityconversa5ons• Round1–Introducetheproject;Listentohopes,wishes,
concernsandissuesforahealthyandvitalfutureforcoastalbluffs;GeneratepossiblesoluHons(June/July)
• Round2–PrioriHzaHonofpolicyalternaHves/adapHveacHons(August/September)
• Round3–Endorsementofprojectreport(Nov./Dec.)SharingthefinalresultsoftheIAandconHnuedengagement
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DesiredProjectOutcomes• Near-term:DevelopmentofacomprehensivesetofpolicyalternaHvesandadapHveacHonstoincreaseresilienceofcoastalbluffstothepossibilityofincreasedvariabilityofLakeMichiganwaterlevelsandincreasedintensityofstorms.
• Mid-term:AdopHonofaselectsetofaforemenHonedpolicyalternaHvesbylocalgovernmentsinthestudyareaandadopHonofaselectsetofadapHveacHonsbycoastalpropertyownersandassociatedstakeholders.
• Long-term:Ameasurableincreaseintheresilienceofbluffstocoastalerosion.