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GIS for Austin Watershed Protection

GIS for Austin Watershed Protection

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GIS for Austin Watershed Protection

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  1. GIS for Austin Watershed Protection • SARA project in San Antonio • Water Quality • 3D Stream channel representation • Groundwater • Enterprise database development in South Florida

  2. Modeling Geodatabase Hydrologic Information System A hydrologic information system is a combination of geospatial and temporal hydrologic data with hydrologic models that supports hydrologic practice, science and education

  3. Arc Hydro An ArcGIS data model for water resources Arc Hydro toolset for implementation Framework for linking hydrologic simulation models Arc Hydro: GIS for Water Resources The Arc Hydro data model and application tools are in the public domain

  4. Arc Hydro —Hydrography

  5. Arc Hydro —Hydrology

  6. Drainage System Hydro Network Flow Time Time Series Hydrography Channel System Arc Hydro Components

  7. GIS for Austin Watershed Protection • SARA project in San Antonio • Water Quality • 3D Stream channel representation • Groundwater • Enterprise database development in South Florida

  8. Regional Storm Water Modeling Program and Master Plan for San Antonio City of San Antonio

  9. San Antonio Regional Watershed Modeling System Geospatial Data: City, County SARA, other “Bring the models together” Modeling System Rainfall Data: Rain gages Nexrad Calibration Data: Flows Water Quality Floodplain Management Capital Improvement Planning Water quality planning Integrated Regional Water Resources planning Flood Forecasting

  10. GIS Preprocessors for Hydrologic Models GIS Interface Model 1 Database Model 2 WRAP WRAP Hydro

  11. Connecting Arc Hydro and Hydrologic Models GIS Interfacedata models HMS Geo Database Arc Hydro data model RAS WRAP

  12. NEXRAD WSR-88D Radars in Central Texas(Weather Surveillance Radar-1988 Doppler)scanning range = 230 km NEXRAD Products: Stage I: Just Radar Stage II: gages, satellite, and surface temperature Stage III: Continuous mosaic from radar overlaps EWX – NEXRAD Radar in New Braunfels Source: PBS&J, 2003

  13. Digital Rain Maps from National Weather Service(03/04/2004)

  14. Digital Rain Maps from National Weather Service(03/29/2004)

  15. Reading Historical Archives of NEXRAD Datasets from TNRIS ftp site Internet TNRIS FTP Server “ftp to local” tool just developed for Map2Map Local

  16. FEMA 100-year flood plain map in Bexar County

  17. Regional Watershed Modeling System Case Study Salado Creek watershed Components: • Arc HydroGeodatabase • for whole watershed • HEC-HMShydrology model • for whole watershed • HEC-RAShydraulic model • for Rosillo Creek Bexar County Rosillo Creekwatershed

  18. Arc Hydro and HEC-HMS HEC-HMS Hydrologic Model Arc Hydro Schematic Network Calculates Flows

  19. Arc Hydro and HEC-RAS HEC-RAS Hydraulic Model Calculates Water Surface Elevations Arc Hydro Channel Cross Sections

  20. HEC Data Storage System (DSS)(binary data file system shared by HEC models) • An exact replica of the binary DSS files is stored in the ArcGIS geodatabase • An Arc 9 Toolbox exchanges data between DSS and the geodatabase Time series catalog Many time series

  21. Flow Change Points Models communicate with one another through Arc Hydro at designated points

  22. FLOODPLAIN MAP Nexrad Map to Flood Map in Arc 9 Model Builder Flood map as output Model for flood flow HMS Model for flood depth Nexrad rainfall map as input

  23. Map to Map Demo

  24. Sources of Rainmap data • Historical Nexrad data – NWS and TNRIS archive • Design rainfall maps – 2, 5, 10, 25, 50, 100 year design rainfalls as used for FEMA floodplain studies • Real-time Nexrad data using web services (Tom Wesp)

  25. Reading Historical Archives of NEXRAD Datasets from Internet FTP Server Internet Local

  26. Design Rainfall Maps 100yr 06h 100yr 12h 100yr 24h

  27. Real-Time NEXRAD Datasets from Web Services

  28. Variable Time t1 t2 t3 Time Series and Temporal Geoprocessing DHI Time Series Manager Time Series Feature Series t3 t2 Value t1 Time Attribute Series Raster Series Value t3 t2 t1 y x ArcGIS Temporal Geoprocessing

  29. GIS for Austin Watershed Protection • SARA project in San Antonio • Water Quality • 3D Stream channel representation • Groundwater • Enterprise database development in South Florida

  30. Irregularly recorded water quality data form an Attribute Series • A point feature class defines the spatial framework • Many variables defined at each point • Time of measurement is irregular • May be derived from a Laboratory Information Management System Field samples Laboratory Database

  31. Fecal Coliform in Galveston Bay(Irregularly measured data, 1995-2001) Coliform Units per 100 ml Tracking Analyst Demo

  32. Tracking Analyst Demo

  33. Conclusions • A rapid method for transforming rain maps to flood maps using Arc Hydro and the HEC models has been created. • It requires ArcGIS version 9 (to be released in May 2004), standard HEC-HMS and HEC-RAS models and associated GIS data • For more information, see http://www.ce.utexas.edu/prof/maidment

  34. GIS for Austin Watershed Protection • SARA project in San Antonio • Water Quality • 3D Stream channel representation • Groundwater • Enterprise database development in South Florida

  35. Bathymetry of the Brazos River

  36. Cross-Sections and Profile Lines

  37. 3D CrossSections and ProfileLines

  38. 3D HydroElement

  39. HydroElement Surface View from below the channel

  40. 3D Channel Demo

  41. GIS for Austin Watershed Protection • SARA project in San Antonio • 3D Stream channel representation • Groundwater • Enterprise database development in South Florida

  42. GIS for Austin Watershed Protection • SARA project in San Antonio • Water Quality • 3D Stream channel representation • Groundwater • Enterprise database development in South Florida

  43. Atmosphere – Land surface Drainage System Drainage System Hydro Network Hydro Network Hydrogeologic unit Borehole Arc Hydro surface water Solid Layers Hydrography Hydrography Channel System Channel System Arc Hydro groundwater

  44. Goal 1: Regional Aquifer Systems • To represent regional aquifer systems as 3D volumes with horizontally varying parameters

  45. Goal 2: Site-Scale Groundwater Studies • Investigations of local problems with pumping and contamination Cross section Volume representation Map view Cross section

  46. Goal 3: Surface-Water Groundwater Interaction • Think of water as one commodity not as surface water or groundwater

  47. Goal 4: Groundwater Modeling • Connect with models like Modflow • Rows, columns and layers of cells

  48. Groundwater Demo

  49. GIS for Austin Watershed Protection • SARA project in San Antonio • Water Quality • 3D Stream channel representation • Groundwater • Enterprise database development in South Florida

  50. Enhanced Arc Hydro Framework for South Florida Existing Arc Hydro Framework Arc Hydro for SFWMD Hydroperiod Estimation Operations Decision Support System Regional Simulation Model Flood Hydrology & Hydraulics