NWS FLDWAV ANALYSIS TOOL

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NWS FLDWAV ANALYSIS TOOL

• FLDAT
• Office of Hydrologic Development
• NOAA/NWS/Hydrology Laboratory
• Janice M. Sylvestre
• WMO/NOAAHydrologic Forecasting Course
• NWS Training CenterKansas City, MOOctober 27,
  2003

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Hydraulic Modeling Components
FLDWAV NWS Hydraulic Routing Model
Stand-Alone (RD Application) Operation
within NWSRFS FLDAT FLDWAV Analysis Tool
Generates input deck for FLDWAV Displays and
analyzes FLDWAV results FLDVIEW Flood Forecast
Mapping Application Displays the extent of
flooding FLDIMS Flood Internet Mapping Service
View flood maps in addition to other layers
over the Internet
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FLDWAV Analysis ToolObjectives

• Generate a FLDWAV input deck using a GUI
• Convert HEC cross sections to FLDWAV format
• Generate cross sections using GIS
• Visually display hydraulic information from
  FLDWAV
• Develop database to contain FLDWAV input files
• Analyze FLDWAV results
• Add calibration capabilities

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FLDWAV Analysis ToolBenefits

• Reduced time to build FLDWAV datasets
• Reduced time to calibrate FLDWAV models
• Improve forecasters ability to analyze FLDWAV
  results
• Centralized location for all data used for RM
  models

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FLDAT Components

• Interactive Input Component (FLDINP)
• Cross Section Analysis Component (FLDXS)
• Graphical Output Component (FLDGRF)
• Output Analysis Component
• Database Component

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FLDATInteractive Input Component
Current Capabilities - Generates input file
for FLDWAV (stand-alone) - Displays
hydrographs, cross sections, invert
profile, empirical rating curves - Export
operational FLDWAV segment
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FLDATInteractive Input Component
Future Enhancements - Error checking
capabilities - Help info/documentation -
Input analysis capability - Enhanced editing
capabilities - Schematic (ability to create
input file using objects)
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FLDAT Cross Section Analysis Component
StationElevation points are visually displayed
to represent the topography
The actual cross section is converted to FLDWAV
format
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FLDATCross Section Analysis Component
Current Capabilities - Ability to visually
display cross sections from various sources
(e.g. USACE models) and interactively convert
to NWS format (b,h) - Ability to average
cross sections - Ability to handle levees
and multiple channels - GIS Capability
Future Enhancements - Data quality checking
- Ability to extract pertinent info from raw
data sets (e.g., roughness coefficients) -
Ability to recommend the minimum number of
required cross sections
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FLDATGIS Cross Section Capability
Given Topographic images DEM After drawing
the river centerline and placing the cross
sections, FLDXS will generate the cross section
profile and export cross section data in FLDWAV
format.
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FLDATGraphical Output Component
Current Display Capabilities - Profiles of
peak conditions (elevation and discharge) -
Discharge hydrographs (computed and observed) at
any cross section - Water surface elevation
hydrographs (computed and observed) at any cross
section - Cross sections showing the
peak conditions at any location - Rating
curves - External boundary conditions.
- Multiple profiles at any time - Multiple
hydrographs at any location - Graphically
display all hydraulic info in output file based
on JNK - Display information on multiple
rivers - Print capability Future
Enhancements - Compare multiple output
displays - Display shape and image files
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FLDATGraphical Output Component
The Birds Eye View allows the user to quickly
view the conditions of the river via a snapshot.
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FLDATGraphical Output Component
The user may also view the river hydraulics with
data groupings that show selected conditions.
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FLDATGraphical Output Component
The user may view cross sections in various ways.
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FLDATOutput Analysis Component
Capabilities - Capture blow-ups and
analyze for potential causes - Anticipate
model instability and provide warning messages
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FLDWAV Analysis Tool Database Component

• The RM database component will store data
  for all river mechanics models.
• FLDAT will export all FLDWAV info into a
  database compatible with IHFS logical data
  model.
• FLDAT will also import FLDWAV data based on
  river components.

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FLDATFuture Components

• Launch FLDWAV, FLDVIEW, and FLDXS applications
  from FLDAT
• Calibration Analysis
• - Provide volume checks on flow data within
  the model
• - Analyze invert profile to determine
  potential problems with shallow depths
• - Automate as much of the Procedures
  document as possible
• - Interactively update Manning n values,
  rerun FLDWAV and review results
• Time Series Analysis
• - Extract time series needed for calibration
  from various sources, display
• graphically, and write in FLDWAV or
  DATACARD format
• - Create time series at river confluences
• - Convert reservoir pool levels to msl
• - Compute missing time series values
• - Combine time series
• - Generate interpolated time series (e.g.
  generate 1-hr t.s. from 6-hr t.s.)
• - Check time series data for accuracy

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FLDAT Specifications
System Hardware Unix Workstation, Linux or
Windows 95/98/Me/NT/XP System Software
Written in Java 1.1.8 with Swing 1.1.1 JRE 1.3
(Linux) JClass 4.5 ESRI Arcview 3.1 (for GIS
capability) ESRI 3D Analyst (for GIS
capability) mySQL 2.23 (for database
component) myOBDC 2.5 (for database component)