1. NWS FLDWAV ANALYSIS TOOL
FLDAT
Office of Hydrologic Development
NOAA/NWS/Hydrology Laboratory
Janice M. Sylvestre
WMO/NOAA Hydrologic Forecasting Course
NWS Training Center Kansas City, MO October 27, 2003

2. Hydraulic Modeling Components
FLDWAV: NWS Hydraulic Routing Model
Stand-Alone (R&D 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

3. FLDWAV Analysis Tool Objectives
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

4. FLDWAV Analysis Tool Benefits
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

5. FLDAT Components Interactive Input Component (FLDINP)
Cross Section Analysis Component (FLDXS)
Graphical Output Component (FLDGRF)
Output Analysis Component
Database Component

6. FLDAT Interactive Input Component
Current Capabilities
- Generates input file for FLDWAV (stand-alone)
- Displays hydrographs, cross sections, invert profile, empirical rating curves
- Export operational FLDWAV segment

7. FLDAT Interactive Input Component
Future Enhancements
- Error checking capabilities
- Help info/documentation
- Input analysis capability
- Enhanced editing capabilities
- Schematic (ability to create input file using objects)

8. FLDAT: Cross Section Analysis Component
Station–Elevation points are visually displayed to represent the topography
The actual cross section is converted to FLDWAV format

9. FLDAT Cross 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

10. FLDAT GIS 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.

11. FLDAT Graphical 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

12. FLDAT Graphical Output Component
The Bird’s Eye View allows the user to quickly view the conditions of the river via a snapshot.

13. FLDAT Graphical Output Component
The user may also view the river hydraulics with data groupings that show selected conditions.

14. FLDAT Graphical Output Component
The user may view cross sections in various ways.

15. FLDAT Output Analysis Component
Capabilities
- Capture “blow-ups” and analyze for potential causes
- Anticipate model instability and provide warning messages

16. 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.

17. FLDAT Future 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

18. FLDAT Specifications System Hardware:
Unix Workstation, Linux or Windows 95/98/Me/NT/XP
System Software:
Written in Java 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)