Modeling At SFWMD

Modeling at SFWMDJayantha (‘Obey’) Obeysekera, Ph.D., P.E.Director, Hydrologic andEnvironmental Systems Modeling DepartmentPresentation forELM Peer Review PanelAugust 1, 2006

ModelingModeling atat thethe DistrictDistrict Hydrologic & Environmental SystemsModeling Department Centralized Model Development Regional Modeling (Development,Implementation, Application) Other Departments Model Implementation & Application

HYDROLOGICHYDROLOGIC && ENVIRONMENTALENVIRONMENTALSYSTEMSSYSTEMS MODELINGMODELING (HESM)(HESM)Department DirectorJayantha ObeysekeraInteragencyModeling Center(jointly with CORPS)Model DevelopmentModel ApplicationSupportCERP & Acceler8Modeling CoordinationRegional SimulationModel Dev.Capability MaturityModel Imp.Model LibraryImplementationModeling forWater Supply PlansOperationsFlood Control

ComplexitiesComplexities ofof thethe SouthSouth FloridaFlorida SystemSystemIndian-Prairie \LakeShore PerimeterSeminole er BasinSt. LucieSt. LucieLakeBasinOkeechobeeEAA NPB/SMCLower West CoastBasinLoxahatcheeEstuaryCaloosahatcheeBig CypressEstuarySeminoleReservationMiccosukee ReservationEstuaryService Area - 1WaterConservationAreasService Area - 2Big CypressNatural PreserveService Area - 3ENP/Florida BayBiscayne BayEstuary

DecadeDecade ofof thethe 70s70s [analog model]AnalogAnalog ModelModelElectric Analog Model Simulated waterlevels and flows incoastal region Upgraded RegionalRouting Model toinclude daily time step Initial development ofSFWMM (2x2)- aregional-scalecomputer simulationmodel

Physical Modeling - Real system

Physical Model at U.C. Berkeley

TheThe SFWMMSFWMM oror 2X22X2 Divides SouthFlorida into 2 mileby 2 mile squaregrid cells Integrated surfacewater groundwatermodel Simulates: HydrologyWater Management

WhatWhat isis NSM?NSM? A computer modelof the pre-drainagesystem Integrated surfaceand ground waterhydrologic model 2,382 2 mile x 2mile grid cells Lake Istokpoga toFlorida Bay

Modeling ApproachSFWMM ModelScenario Climatic InputModelOutput Daily time– Rainfall– ETseries ofwater levels,flows Demands notmet BoundaryConditionsPeriod ofrecord: 1965-2000 Landuse/Landcover Water Demands Operating CriteriaPerformanceMeasures(Ag, Env, Urban)

RESTUDYPROCESSMulti-AgencyUS Army Corpsof ylogistsDESIGN TEAMEcoog istsBiPublic rstsEngineersogislorReal HydTechEstatenicians SpecialistersResource ManagerssnnPlaEnvironmental ScientistsRESTUDYTEAMWEB TEAMistsn omALTERNATIVEALTERNATIVEDESIGNMODELING OFALTERNATIVESWEB PUBLISHINGOF ALTERNATIVESEVALUATIONTEAMPUBLIC COMMENTAND FEEDBACKEVALUATION OFALTERNATIVESSELECT PREFERREDALTERNATIVE

Hydrologic Performance Measureswww.sfwmd.gov/org/pld/restudy/hpm

Operational36 1-yr 198119772000199619801972

DecadeDecade ofof thethe 90s-Initial90s-InitialDevelopmentDevelopment ofof RSMRSM Development of thenext generationmodels initiated: Object-Oriented C Database interfaces New modelingalgorithms researched

WaterWaterResourcesResourcesPlansPlans lex!complex!Cartoon of Complex Plumbing system

ClassificationClassification ofof essaryWater QualityHydrologic/HydrodynamicUncertainty

MODEL PROCESSES AND AREAS OF CONCERNLEGEND:Approval& ModelOversightGoodDataNeeds attentionNeeds a lot of icationDataPreProcessingEnd UsersDataPostProcessingInformation Technology and GIS SupportTraining and DocumentationMethodologyScience - inDevelopment

StrategicStrategic ModelingModeling PlanPlanImplementationImplementation ProgressProgress Established the Office of Modeling (now HESM) Model Development Interagency Modeling Center (CERP) Model Application (non-CERP) Established Modeling Oversight Team (MOT) Quality Assurance & Quality Control throughimplementation of a Modeling Methodology Capability Maturity Model (CMM)

PeerPeer ReviewReview A requirement of the new modelingmethodology Status of peer reviews: 2x2 model (1998, 2005) RSM (Theory part reviewed in 2005) LECsR (June 2006) Everglades Landscape Model (ELM)(process initiated)

RegionalRegional SimulationSimulation ModelModel (RSM)(RSM) Why we needed it? 2x2 has served for about 25-years. Need a nextgeneration regional-scale model Next generation tool needs to: Minimize or eliminate “single person dependency” Be well documented, easy to learn, flexible andtransparent Defensible. Meet requirements of additional scrutinythat we did not have 10-15 years ago – Peer Review Make use of new data, new technologies in computersand modeling methods. Be efficient (reasonable run times), and accurate

RSMRSM DevelopmentDevelopment ApproachApproach Important tool for implementation of CERP andnon-CERP projects Low-level effort used to design and begin thedevelopment of the next generation version of2x2 Higher priority on RSM during last two years allocation of experienced 2x2 modelers in thedevelopment, contractual help A phased approach for completion Transition from 2x2 to RSM cannot happenovernight (due to unique differences)

RSM VersionsNatural System,NSRSMSurface exaggerated vertically for displayManaged System,SFRSM

SFWMM (2x2) versus RSM2x2RSM

RSM ConceptsRSMSFRSMHydrologic SimulationEngine (HSE) Simulates hydrologicprocesses Overland flow Groundwater flow Canal network Calibration/validationof model parametersManagement SimulationEngine (MSE) Simulate structureoperations Implementation ofoperational rules Flood control rules Water supply policies Regional operationalcoordination

Natural System RSMRSMHydrologic SimulationEngine (HSE)Natural System RSM Pre-drainage physical setup Simulate hydrologicprocesses Overland flow Groundwater flow River network Validation against predrainage historical records &anecdotal informationSFRSM

RSMRSM AchievementsAchievements to Date Several applications duringdevelopment andimplementation Numerous refereed journalarticles (peer review)External Peer review of RSMtheory (by a panel) Calibrated sub-regionalmodels for EvergladesAgricultural Area, Palm Beach,Broward, Miami-Dade,Caloosahatchee and St. Lucie Natural System RegionalSimulation Model (NSRSM)

Schedule - PhasesFY05FY06FY07FY08RSM Phase IRSM Phase IIRSM Phase IIIRSM Phase IV Hydrologicsimulationcalibration&validation PeerReview –RSMTheory NaturalSystemRSM initialversion Addresspeerreviewrecommendations Develop ApplysubregionalSFRSMs and NSRSMin selected projects ApplySFRSM forpriorityProgramneeds Peer Review of Naturalcouplingof hydrology &System RSMwater management Continue Completemigration Develop selectedmanagementfrom 2x2 tocapabilitiessubregionalRSMmodels (eg. Miami Start migration fromDade) Finalize2x2 to RSMWater Initial Water QualityQuality Enhance WaterDevelopmentfeaturesQuality features

C -41AC -41A41C- -41CCC4-040L-62L-62LL6-36N3NL-4LDDL -438C3-8C-9L-5-5 9L-L6-46448L- -48LLL-6-6 00C -24C -24C-23C-23MARTINMARTIN5L-56 -4 7L7L-6 8L1-8L-L-36L-36L-38EL-38ELLL - -6 767 CC LL - -6 767 CCL-37L-33L-37L-33I-75 CANALI-75 CANALL-2L-2 8 8L-31WL-31WC-11 1EC-11 1EC-110C-1102N10NC1-0 2CC-10 3NC-10 3NCC1-1ICCTTIANN ANNTLLA CEEAAAT OOC0A100AC1-0C-L-67 EXTL-67 EXTC-2C-2L-31NL-31NC-103C-103SC-113C-113 -10 30 3SC -1CC-111C-111C-3C-3CC-1N -1WC-1010C-CC-8C-8CC66L-30L-30LL- -6767 AAC-9 EXTC-9 1C-11-C1-21323G-16G-16C-14C-14L-35BL-35BLL- -3535 AAC-42C-4223L2-3L--C6-060C-11C-11 RO CANALHILLSBORO L-4L-4TAM IAM ITAM IAMCANALI CANALC-51C-51L-40L-40L-21L-21L-13L-13LL- EERFENC CANAL Cells (704 ft. by 704 ft.) – 225cells in each 2x2 cell Daily time step1L-25L-25L-2WL-2WL-2 L-1L-2 L-1C-21C-2L- 24L- 24 2L- 2 Covers the entire lower eastcoast regionThree (3) model layers toaccount for heterogeneity inthe surficial aquiferSpatial and temporal scalesCC - - 4343 8C-18C-1LL88-42-42LL-3 13 1EE41C4-1C-L-61L-619L-4-4 9L0L-5-5 0L-L6-36S3SLA2A3C2-3C-ConceptualConceptual ModelModel andandGridGrid DesignDesign

LowerLower EastEast CoastCoast SubRegionalSubRegional(LECsR)(LECsR) ModelModel OverviewOverview Combines previous county-level models Three dimensional groundwater flow model ofSurficial Aquifer System Based on the popular groundwater model developedby USGS (MODFLOW) Includes SFWMD developed enhancements Integrates surface water in wetlands Effect of system-wide operations to be obtained from2x2 and RSM (in the future) Peer Review – complete June 2006

LakeLake OkeechobeeOkeechobee Largest lake in southeastern US Area: 1730 km2 Average depth: 2.7 m Surrounded by dike Turbid, wind driven Eutrophic

LOEMTemperature,precipitation, cloudWindVolatilizationCurrentSurface elevationMixingTemperatureSalinityBottom stressSediment boundary& loading dataToxicantsHydrodynamic boundary WIND WAVEMODEL(SWAN)Atmospheric depositionSolar Nutrient boundary &loading SettlingResuspension/SettlingTOXICMODELToxic boundary & loadingdataNutrient fluxesSediment oxygen demandDecaySEDIMENT BED MODELSEDIMENT DIAGENESIS MODELBurialA Diagram of Major Processes in the LOEM

RestorationRiverRestoration ofof thethe LoxahatcheeLoxahatcheeRiverStudyArea Map

ModelingModeling ToolTool DevelopmentDevelopment forfor thetheNorthwestWatershed ForkNorthwestFork hwaterFlow2-D EstuarineHydrodynamicand SalinityModel: RMALong-TermSalinityManagementModel:LSMMEvaluation linity

Loxahatchee River Salinity Model Domain

EvergladesEverglades LandscapeLandscapeModelModel Integrate hydrology,biology and nutrientcycling in spatiallyexplicit simulation Understand ecosystemdynamics at regionalscale Develop predictions oflandscape response toaltered water & nutrientmanagement

Thank You !Questions ?

Development History of the Lake Okeechobee Hydrodynamic and Wind-wave Model Wind-wave Model (by wind-wave equations approach)Jiang, Wang, and Jin(1996). J. of Ocean Engineering.Ren, Wang, and Jin (1997). J. of Computers and Fluids.Ren, Wang, and Jin (1997).Jin and Wang (1998). J. of Ocean Engineering.J. of AWRA.Wind-wave Model (by Spectral Energy Approach)Mei, Fan,and Jin (1997). Journal of Geophysical ResearchJin and Ji (2001). Journal of Ocean Engineering .,3-D Hydrodynamic Model (modified from EFDC)Jin, Hamrick, and Tisdale (2000). Journal of Hydraulic Engineering, ASCE.,Jin, Ji, and Hamrick (2002). Journal of Waterway, Port, Coastal, and Ocean Engineering , ASCE.Jin, and Ji (2005). Journal of Waterway, Port, Coastal, and Ocean Engineering, ASCE, 3-D Sediment Model (modified from EFDC)Jin and Ji (2004). Journal of Hydraulic Engineering ,ASCE.

CERPComponentsOrlando 6 pilot projects 15 surface storage areas( 170,000 acres) 3 in-ground reservoirs( 11,000 acres)AquiferStorage& RecoverySurface WaterStorage ReservoirStormwaterTreatment Areas(STAs)KissimmeeRiver 19 stormwatertreatment areas( 36,000 acres) 330 aquiferstorage andrecovery wellsCaloosahatcheeRiver 2 wastewaterreuse plantsLakeOkeechobee Removal of over240 miles ofcanals, leveesand structuresFt. MyersWCAs Operational changesEvergladesNationalParkRemoving Barriersto SheetflowOperationalChangesFlorida BaysKeyadiFloryneSeepageManagementB ayBig CypressNationalPreserveBiscaReuse Wastewater

Modeling Coordination Regional Simulation Model Dev. Capability Maturity Model Imp. Model Library Implementation . include daily time step . computer simulation Analog ModelAnalog Model model. Physical Modeling - Real system . Physical Model at U.C. Berkeley .