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Arc Hydro and hydrologic models Interface Data Model for HEC-HMS

Integrating ArcHydro and HEC Models by David R. Maidment Center for Research in Water Resources University of Texas at Austin. Arc Hydro and hydrologic models Interface Data Model for HEC-HMS Implementation in San Antonio using Model Builder. Integrating Arc Hydro and HEC Models.

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Arc Hydro and hydrologic models Interface Data Model for HEC-HMS

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  1. Integrating ArcHydro and HEC Modelsby David R. MaidmentCenter for Research in Water ResourcesUniversity of Texas at Austin • Arc Hydro and hydrologic models • Interface Data Model for HEC-HMS • Implementation in San Antonio using Model Builder

  2. Integrating Arc Hydro and HEC Models • Arc Hydro and hydrologic models • Interface Data Model for HEC-HMS • Implementation in San Antonio using Model Builder

  3. 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

  4. GIS Preprocessors for Hydrologic Models GIS InterfacePrograms HMS Geo HMS Database RAS Geo RAS

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

  6. GeoRAS Connecting Arc Hydro and Hydrologic Models GIS Interfacedata models HMS HMS IDM GeoHMS Geo Database Arc Hydro data model RAS RAS IDM

  7. Integrating Arc Hydro and HEC Models • Arc Hydro and hydrologic models • Interface Data Model for HEC-HMS • Implementation in San Antonio using Model Builder

  8. Basin Interface Data Model

  9. Project Interface Data Model

  10. IDM Performance Goal • To provide a database for all HMS data, so that the data may be queried and retrieved efficiently.

  11. IDM Data Transfer Goal • To store data in a manner so that it is readily transferable from geodatabase to HMS files, and visa versa. HMS files HMS geodatabase

  12. IDM Spatial Analysis Goal • To store watershed (spatial) data in a manner that can be easily viewed and analyzed in ArcMap.

  13. IDM Intuitive Use Goal • To create a data structure that is logical to the HEC-HMS user

  14. IDM Arc Hydro Compliance Goal • Arc Hydro connectivity and naming conventions Arc Hydro Geodatabase IDM Geodatabase HEC-HMS Program files HydroID FeatureID HMSCode Element Names

  15. Flow Network Connection between HMS feature classes and parameter tables Connection between HMS and IDM elements The HMSCode .basin HMS text file HMSSubbasin attribute table HMSInitialConstant table IDM

  16. IDM Geodatabase Design Purpose: To provide a HMS data storage structure that meets IDM design goals Visio 2000 UML ArcGIS Repository Geodatabase Schema

  17. UML The Unified Modeling Language

  18. UML UML Diagram Geodatabase Table

  19. Basin GDB

  20. Project GDB

  21. Importing HMS Data Use Visual Basic to develop codes for transferring data.

  22. Constant Loss Rate (inches/hour) Llano at Junction Model Rainfall lost to infiltration

  23. Snyder Time to Peak (hours) Llano at Junction Model Time to Peak

  24. Modified Puls Storage (ac-ft) Llano at Junction Model Storage required to produce 5000 cfs flow

  25. Integrating Arc Hydro and HEC Models • Arc Hydro and hydrologic models • Interface Data Model for HEC-HMS • Implementation in San Antonio using Model Builder

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

  27. 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

  28. 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)

  29. 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

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

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

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

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

  34. Real-Time NEXRAD Datasets from Web Services

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

  36. 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

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

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

  39. 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

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

  41. 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

  42. Conclusions • An interface data model provides a convenient way of storing and visualizing the content of a hydrologic model • Combination of interface data models and ArcGIS Model Builder provides a very efficient means of work flow automation

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