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

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Presentation transcript:

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

River Mechanics Activities Outline  Model development  Visualization tools development  Model calibration and verification  Other topics  Practical updating techniques  Ensemble Forecasting  Training and support  Future Direction

Over 30 Years of Hydraulic Model Development ? Ability to model complex river systems Dynamic Wave Operational Model (DWOPER) ? Real-time flood forecasting of dam-break floods NWS Dam Break Flood Forecasting Model (DAMBRK) ? Ability to model storm sewer networks (external request) Network capability added to DWOPER (NETWORK) ? Dam break pre-forecast readily available for forecaster Catalog of Dams (DAMCAT) SMPDBK combined with DAMCAT (SDBCAT) ? 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 ? Capabilities of DAMBRK and DWOPER in one model Generalized flood wave routing model (FLDWAV) present

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

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

Hydraulic Modeling Other 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 ( )  Hydraulic model workshops for NWS users  Web page tutorials for hydraulic modeling  River mechanics list server for feedback  River mechanics forum  River Mechanics for support ( )  River mechanics FAQ web page

Hydraulic Modeling Other 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

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