Alamo WashBasin Management Study GovernmentSectorStakeholderMeetingFebruary10,2017

Welcome

• AgendaIntroductionsandOpeningCommentsProjectCharacteristicsProjectScopeofWorkProjectScheduleStakeholderInvolvementandInputAdjourntoCommentonMaps

Fred Felix, P.E.

• City/Countycollaboration• Studywillidentifybestwaytomanagethisbasin• Developratingsystemforallaspects• Shareknowledgeofstudyarea– Commentforms

Introductions

• ProjectTeamPimaCountyRegionalFloodControlDistrictCityofTucsonCMGDrainageEngineeringInc.JEFullerHydrology&GeomorphologyInc.AshbySurveyingWheatDesignGroupKaneenCommunications

• Stakeholders

Project Characteristics

Project Scope of Work

• ExistingConditionsDataCollectionandReview• FloodplainDelineation• FEMALetterofMapRevision(LOMR)ifJustified• AlternativesAnalysisandRemediationRecommendations• PublicandStakeholderInvolvement

Existing Conditions• DataCollectionDrainageComplaintsOperationSplashAs‐BuiltPlansReviewPreviousStudies

• HistoricalPeakFlowDataTucsonStormwaterMgtStudyUSGSStreamGage

• FieldInspections SurveyExistingCulverts,etc.

Floodplain Delineation• 2dimensionalmodeling(FLO‐2D)• NewTechnology(notavailable20yearsago)• Moredetail– breaksdownwatershedtoover1millionpieces

• Usescurrenttopographicandlanduse data(2015)

• Abletoreflectbridges,culverts,stormdrains,etc.

• Betterforalternativesevaluation• MajorWash&localizedflowsaredetermined• Draftmapforillustrationonly

Alternatives Analysis

• Developacomprehensivelistofproblemareas

• Topratedlocationstoadvance

• ListentoStakeholdersaboutpotentialAlternatives

Alternatives Analysis

• Proposemixofalternatives• Structural(newculvert,bankprotection,detentionbasin,etc.)• Policybased(developmentstandard)• Operational(frequencyofvegetationmaintenance)

Project Schedule

Stakeholder Involvement and Input

• Periodicstakeholdersmeetings• FloodControlProjectwebsite

• Gotowww.pima.gov andenterAlamoWashBasinManagementinthesearchfield

• Projectupdates• FirstofthreeOpenHouseswillbe6‐7:30p.m.Tuesday,March21,2017,atMurphy‐WilmotLibrary,530N.WilmotRoad

Thank You! Please Visit Our Maps!