Middle Verde Geospatial Database Project

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Middle Verde Geospatial Database Project. Rob Ross and Abe Springer Arizona Water Institute Geospatial Research and Information Laboratory Northern Arizona University May 21 st 2008. Outline. Introduction to project Discussion of Geographical Information Systems (GIS) - PowerPoint PPT Presentation


Middle Verde Geospatial Database Project Rob Ross and Abe SpringerArizona Water InstituteGeospatial Research and Information LaboratoryNorthern Arizona UniversityMay 21st 2008OutlineIntroduction to project Discussion of Geographical Information Systems (GIS)Data compilation and verificationDesign of conceptual modelDesign of analytical modelPhase two of studyStudy ReachIntroduction Yavapai County funded study to compile data for use in surface water flow modelObjectivesCompilation of dataEditing and verification of dataDesign of surface water flow (hydraulic) model from GIS informationWhat is a GIS?Geographic Information SystemCollection of information including geographic data (maps) and qualitative and quantitative information (names, area, flow rates, etc.) to create a graphical representation of a systemMetadata describing the quality and scope of data (data about the data)GIS of study areaAttributes and LayersAttributes are tables of information linked to a graphical representationLayers are groups of shapefiles or file database information used to organize informationAttributes enable labeling to show values/names of areas of interestAttributes and LayersTypes of information included in GIS Line shapefilesPoint shapefilesPolygon shapefilesAdded information (pictures, sound/video files, etc.)Attribute tablesUses for GISSpatial decision support systems - ability to analyze geographic data to support decisionsAutomated spatial modeling - simulation and forecasting (i.e., surface flow model reacting within geographic constraints over time)Network analysis - calculate distances in relation to other dataProjection systemsAccurately display information from a spherical world as a flat mapUse coordinate projection systems to represent actual locations on mapsMany data sources come from different data projectionsConvert into common projectionHow Projections Workhttp://erg.usgs.gov/isb/pubs/MapProjections/graphics/mercator.gifData Collection SourcesYavapai County GIS DepartmentArizona Department of Water Resources 2000 reportSalt River Project GIS/Cartography departmentUSGS Eureka and Diamond S ditch associationsData IssuesCompiled data from multiple sourcesDifferences in collection and scaleVariant projection systemsDifferent tolerance criteria Sources used for different purposesData collected at different points over long period of timePrimary Data Layers IrrigationDitchesMeans Conveyance (laterals)VegetationAerial photographyWell dataPrimary LayersSecondary Data LayersLand Parcel informationSpringsVerde river channelTributary channelsRoadsCitiesSecondary/Reference LayersEditing ProtocolLayers edited over 12 inch pixel resolution aerial photography (PhotoMapper software)Edited for detail at 1:750 scaleMultiple fields merged for simplicity, where common attributes permitPolygons not drawn around buildings/roads/property linesData updated where obvious changes are presentConsistent methods for different layers to create uniform data systemCottonwood1:2400 before editing1:2400 after editingLateral gate on Eureka DitchEureka Ditch at Verde River DrivePioneer Ditch Sluice Operation DataAccuracy of edited layers5 feet with irrigation layers5 feet in ditch layers5-20 feet in lateral locationsError due to sub-grade duct routing and estimation of boundaries of irrigation/vegetation layersWell layers are taken as is due to large number of locations, and access issuesNEMO does not provide coverages at a ditch/diversion Scale, nor is their data ground checked.NEMOPhase TwoExamination of modeling softwareDetermination of necessary features in softwarePreparation of surface water flow model for Middle and Upper Verde RiverHydraulic ModelsSimulate flow of water in channelsChannels can be natural and constructedSimulate surface-water/groundwater interactionsHydrologic ModelsSimulate runoff in watershedsTypically difficult if not impossible to use in arid regionsRecommendationsUse hydraulic model to simulatesteady baseflow in river and diversionsUnsteady baseflow during diversion seasonUse HEC-RAS in WMSGIS based 1D modelCan also be used to create floodplain mapsSummaryCompiled all known existing informationEditing has greatly increased accuracy of data, and provided operation dataCombination of remote sensing and field checking has verified informationGIS will serve as a complete input system for surface water flow modelHydraulic flow model is most appropriate for regionAcknowledgementsMark Manone and GRAILLeslie Graser, ADWRJeanmarie Haney, TNCKevin Blake, Yavapai County GISGIS/Cartography Department, SRPKyle Blasch and Don Bills, USGSJohn Rasmussen, Yavapai CountyJohn McReynolds and Steve Ayers, Eureka Ditch AssociationFrank Geminden, Diamond S Ditch Association***************


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