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River Mechanics Activities

River Mechanics Activities. January 2004. River Mechanics Group Hydrology Laboratory Office of Hydrologic Development National Weather Service National Oceanic and Atmospheric Administration. River Mechanics Activities Outline. Model development Visualization tools development

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River Mechanics Activities

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  1. River Mechanics Activities January 2004 River Mechanics Group Hydrology Laboratory Office of Hydrologic Development National Weather Service National Oceanic and Atmospheric Administration

  2. River Mechanics ActivitiesOutline • Model development • Visualization tools development • Model calibration and verification • Other topics • Practical updating techniques • Ensemble Forecasting • Training and support • Future Direction

  3. Over 30 Years of Hydraulic Model Development • Ability to model complex river systems • Dynamic Wave Operational Model (DWOPER) 1976 - 1984 • Real-time flood forecasting of dam-break floods • NWS Dam Break Flood Forecasting Model (DAMBRK) 1977 - 1988 • Ability to model storm sewer networks (external request) • Network capability added to DWOPER (NETWORK) 1983 - 1991 • Dam break pre-forecast readily available for forecaster • Catalog of Dams (DAMCAT) 1984 - 1991 • SMPDBK combined with DAMCAT (SDBCAT) 1991 - 1998 • Ability to predict the breach characteristics for earthen dams • Breach Erosion Model (BREACH) 1984 – present • Ability to model mud/debris flow and landslides • Capability added to DAMBRK 1984 • Understanding hydraulic modeling parameters • Guidance on hydraulic modeling criteria 1992 - 1998 • Capabilities of DAMBRK and DWOPER in one model • Generalized flood wave routing model (FLDWAV) 1988 - present

  4. Hydraulics Visualization Tools Currently Under Development • Flood Forecast Mapping • Generate operational flood forecast maps (FLDVIEW) 2000 • Display flood map over the Internet (FLDIMS) 2000 • FLDWAV Analysis Tools • Output display of hydraulic models (FLDGRF) 1996 • FLDWAV input/output display & output analysis (FLDAT) 2000 • GIS cross section GUI (FLDXS) 2002 • GIS-Based Dam Break Analysis Tool (DBAT) 2004 • Graphical user interface for SMPDBK (SMPDBKJ) 2003 • Integrate data (NID, GAZATEER, USGS DEM), FLDXS & SMPDBKJ and develop methodology to acquire realistic data & generate accurate forecast in minutes 2004 • Graphical user interface for BREACH (BREACHJ) 2004

  5. Hydraulic Modeling Calibration and Verification • Automatic calibration techniques • Roughness coefficients 1978 • Cross section parameters 1986 • Procedures for calibration of NWS hydraulic models (DWOPER/FLDWAV) 1994 • Methodology to assess improvement in hydraulic model forecasts over hydrologic model forecasts 2004

  6. Hydraulic ModelingOther Topics • Practical updating techniques • Automatic adjustment of stages & flows after simulation • Virtual lateral flows to account for missing ungaged inflows • Ensemble Forecasting • Improved method of determining probabilistic water surface profiles • Training and support • Biannual NWS hydraulic models workshop to external users (1976-1998) • Hydraulic model workshops for NWS users • Web page tutorials for hydraulic modeling • River mechanics list server for feedback rvrmech@gateway2.nws.noaa.gov • River mechanics forum http://www.nws.noaa.gov/oh/hrl/rvrmech/rvrmain.htm • River Mechanics email for support ( river.mechanics@noaa.gov) • River mechanics FAQ web page http://www.nws.noaa.gov/oh/hrl/rvrmech/faq_update.htm#river

  7. Hydraulic ModelingOther Topics • External Collaboration • Collaboration with Homeland Security Department (DTRA, FEMA) in development of emergency flood mapping capability • More than 120 users since 2002 (Federal, state and local government; universities; and consultants) on the River Mechanics Forum (at least 25 international users) who provide input to the development of the River Mechanics models • Collaboration with USACE-CRREL in the implementation of river ice capabilities in NWS hydraulic models • Provided flood forecast mapping capability to international agencies • Collaboration with other NOAA offices in development of an integrated flood forecast map of both the river and coastline

  8. NWS River Mechanics Activities Future Direction • Hydraulic Modeling • Stream flow Regulation Accounting • River Ice Modeling • Sediment Transport • Pollutant Transport • Investigate the need for 2-D or 3-D hydraulic modeling • Visualization Tools • Flood Forecast Mapping • Coupling coastal and river flood forecast maps • Investigate the need for 2-D flood forecast maps • FLDWAV Analysis Tools • Visualization tools for model calibration • Visualization tools for data analysis • Visualization of hydraulic structures (dams/bridges/levees) • Calibration and Verification • Improved methods for automatic calibration

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