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HEC Software Activities

HEC Software Activities. HEC Software Library NexGen Project Watershed hydrology with HMS River/channel hydraulics with RAS Reservoir Analysis with ResSim Flood damage analysis with FDA Software Integration - CWMS. SPD H&H Briefing, September 2001. Hydrologic Engineering Center.

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HEC Software Activities

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  1. HEC Software Activities • HEC Software Library • NexGen Project • Watershed hydrology with HMS • River/channel hydraulics with RAS • Reservoir Analysis with ResSim • Flood damage analysis with FDA • Software Integration - CWMS SPD H&H Briefing, September 2001 Hydrologic Engineering Center

  2. HEC Software Library35+ Years of Development, Support Surface Water Water Quality River Hydraulics Data Storage Reservoirs Water Control Statistics Miscellaneous Planning Analysis Total Programs: 93 Major Software Packages: 22 HEC software available in public domain Hydrologic Engineering Center

  3. NexGen – 1992 to PresentRevisit Library, Prepare for New Century Purpose: Develop successor modernized hydrologic engineering, planning analysis, and water control management software for Corps’ offices. Concept: State-of-the-art technical algorithms and software engineering. Multi-user, multi-tasking network environment; integrated program packages for desktop, workstation technology. Hydrologic Engineering Center

  4. HEC-HMS, Hydrologic ModelingVersion 1.0 Release 1997; Now V 2.1 • Event or continuous precipitation-runoff simulation without snowmelt • Hydrologic flow routing in channels • Gridded representation of watershed • GIS linkage for model development • Parameter estimation by optimization • Integrated w/other HEC models in CWMS Hydrologic Engineering Center

  5. HMS Versions 2.2/3.0 • Releases late 2001, 2002 • Reservoir additions including dam break • New GUI, graphics, tables, cut/copy/paste • Environmental features – interface w/Basins • Controlled outlets, gates, and pumps • Featured program in CWMS for flow forecasting

  6. HEC-HMS + GeoHMS GIS R&D Watershed Hydrology R&D Raw GIS Data Grid Format SHG & HRAP Gridded Hydrologic Data GIS Preprocessing HEC-GeoHMS (ArcView) HMS Inputs GIS Preprocessed Spatial Hydrology Database HEC-HMS DEM, RF1 HUC STATSGO Land Use Radar Rainfall Watershed & River Characteristics

  7. HEC-GeoHMSBasin Processing • Basin Merge • River Merge • River Profile • Split Basin at Confluences • Basin Subdivision

  8. Urbanizing Watershed - Houston, Texas US Army Corps - Galveston District Harris County Flood Control District Houston Texas 342 sq. mi. Buffalo Bayou Urban Development

  9. Stream/drainage Improvements

  10. Buffalo Bayou HMS Model

  11. Version 1.0 (2000) • Basic HMS • User’s Manual • Version 1.1 (2001) • DEM Reconditioning • Curve Number • Additional Coordinate System Support • Thiessen Polygon • Version 2.0 (2002) • More parameters • Man-made drainage structures/boundaries

  12. HEC-RAS, River AnalysisVersion 1.0 Release 1995, Now V 3.0 • Steady, unsteady flow • New geometric data features • Split flow optimization • New ArcView GeoRas

  13. Steady, Unsteady Flow Modeling • Rivers, culverts, bridges, in-line weirs, gated structures, floodplain management • Network representation; quasi-2D • Unsteady flow data editor, simulation manager • Output post-processor; velocities, profiles • Stage and flow hydrograph plots; animation • HEC-2, UNET data importers

  14. Future Versions of HEC-RAS • Version 3.1, 3.+ late 2001, 2002 • Additional unsteady flow features, e.g. levee and L&D algorithms, MBMS model features • Hydraulic design functions – some SAM+ • Bug fixes from version 3.0 users suggestions • Version 4.0, future improvements • Sediment Transport Computations – replace HEC-6

  15. HEC-GeoRAS River Hydraulics Model ArcInfo/ ArcView GIS Topographic Survey Hydrographic Survey Floodplain & Channel TIN HEC-RAS Standard Hydraulic Geometry TIN Processing Cross Sections Extraction WSE @ Cross Sections HEC-RAS HEC-2 Cross Sections Intersect Continuous WS with Land (terrain-based interpolation) Inundated Area FLOODPLAIN MAP

  16. HEC-GeoRAS (ArcView) • GIS pre-processor for HEC-RAS: • Cut cross sections • Define main channel bank stations • Calculates reach lengths • Defines roughness coefficients • GIS post-processor of HEC-RAS results: • Calculate and display flood inundation maps • Spatially displays HEC-RAS depth and velocity output

  17. RAS/GeoRAS; Quasi-2D Reno, NV

  18. RAS Schematic From GeoRAS

  19. Flood Inundation, Reno, NV

  20. Truckee Meadows HEC-RAS Model – Inundation Mapping

  21. HEC-FDA, Flood DamageVersion 1.0 Release 1997, Now V 1.2 • HEC-FDA Version 1.2 • Flood damage reduction plan comparison • Probabilistic-based computations, risk analysis • H&H: Q-f; S-Q; RAS Profiles, levee geotechnical performance • Economics: Structure inventories; occupancy types (depth-percent damage); contents • Results – ‘Expected Annual Damage’

  22. Flood Damage Analysis – Current Support Programs • HEC-FIA (Flow Impact Analysis) • Event-based damage • Flooding duration • Project benefit accomplishments • Deployed with CWMS Version 1.0 • DAMCAL – raster analysis using land use themes

  23. Structure Inventory

  24. Structure Value

  25. Flood Inundation, Inventory Geo-referencing

  26. Flood Damage Analysis – Under Development (FY 02) – 1/2 • One “blended” program • Plan comparison using risk analysis approach • Event damage and impacts • Project benefit accomplishments • Spatial displays of input and output • Damage aggregation • Profiles (current) • Inundation layers (e.g. HEC-GeoRAS results)

  27. Flood Damage Analysis – Under Development – 2/2 • Property inventories • Structures (tax assessor’s data, field inventory, etc.) • Land use (census block data, USGS land use, local land use) • Spatially displayed/editable from the display • Results displayed interactively by property

  28. HEC-Res/Reservoir Systems • Several products - HEC-5 (Legacy); Prm (Prescriptive Model); FcOpt (Flood Control); ResSim (new, simulation/real-time emphasis) • Prm and FcOpt - optimization models (LP) for operation rule studies • ResSim - Object-oriented, Boolean Rule-based simulation model; initial release with CWMS Hydrologic Engineering Center

  29. Physical Data Reservoirs, Reaches, Junctions, & Diversions Operational Data Storage Zones Flow Goals Constraints Public Release late 2002 HEC-ResSim Reservoir Network

  30. Reservoirs – Operational Data • Zone Definition • Defaults: Flood Control Pool; Water Supply Pool – defined by the “Guide Curve”; Inactive Pool • User Defined • Flow Goals & Constraints • Min and Max Flow Limits • Specified Flow • Release as a function of Elevation • Release as a function of Inflow • “Operational” Rate of Change Limits • Downstream Control

  31. Pre-defined Plots & Tables Active Schematic: Dropdown list from each Element DSS-Vue Pre-defined Reports Output Options

  32. HEC-ResPrm Conflict Example • Alamo Dam/Bill Williams River • Multipurpose Project Southwest Arizona • Conflicts • Flood Control - Keep Reservoir Empty • Conservation - Keep Reservoir Full • Downstream Riparian - Emulate Natural • Recreation/Endangered/Wildlife, etc. - Different Pool/Flow Desires Hydrologic Engineering Center

  33. Comparison - Add HEC-PRM • Trial with simulation/Prm with simulation • Compare 21 criteria (pool elevations, flow /timing - 10 better, 3 same, 8 worse • Better/worse? probably equivalent • Worthwhile? Insight/efficiency/screening • Consequences/preferences demonstrated • Efficient (one/few Analysis vs. many) • Weighting/tradeoffs are directly comparable Hydrologic Engineering Center

  34. CWMS Modernization Project • Decision support system for water control • Regulate river flow - 700+ reservoirs and water control structures • Corps-wide system, standardized software and corporate data base • Software modernization; 1997 - 2001 • System deployment - 2001 – 2002 • Official Army AIS Class IV System Hydrologic Engineering Center

  35. CWMS Software Suite • Data acquisition/validation - in real time • Data dissemination - Web-based • Database system - Oracle & model support • Forecasting, modeling, decision support • HEC stand-alone models; HMS, RAS, FIA, ResSim; GIS/ArcInfo & ArcView/CorpsView • Control, visualization; spatial animation • Integrated ‘active’, software system Hydrologic Engineering Center

  36. Deployment Schedule FY 2000 FY 2001 FY 2002 FY 2003 TV 1.0 TV 2.0 TV 3.0 Deployment CWMS V 1.0 Implementation FY 2009 MDR III*** MDR II AG AG AG AG CURG PD Workshop CURG NWD + MVR NW-MR+ SPK MVD SPD LRD SWD SAD NAD 07 09 11 02 04 06 09 11

  37. Numerical Model Maintenance • Support for HEC library programs • Maintenance • Documentation • Consultations • Corrections • Over 1, 500,000 executions per Year • Responded to 2,500 assistance requests ‘00 • Funding by district/division voluntary subscription user’s fees • HEC software available in public domain, via federal, public, and private vendors Hydrologic Engineering Center

  38. Software Distribution and Support • Distribution to all Corps offices via CDs, Web downloads, requesting/listed vendors • Corps subscribers - full distribution, support • Hot line consultations, errors correction, documentation • Federal subscribers, vendors - full support • Corps non-subscribers, Federal, non-Federal, foreign - private vendors, NTIS, HEC Web page: http://www.hec.usace.army.mil • HEC Software are popular and well subscribed by field offices; also other federal agencies, private consultants, and foreign agencies/consultants. Hydrologic Engineering Center

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