WinTR20 Project Formulation Hydrology Computer Program

1
WinTR-20Project Formulation HydrologyComputer
Program

• Basic
• Input and Output

Presented by WinTR-20 Development Team
2

• This presentation demonstrates the new WinTR-20
  computer program model. Using a simple example,
  you will learn how to
• Create an Input File
• Run WinTR-20
• View Output

3
Example Problem

• 3 Sub-Areas
• - Sub-Area 1 contains a floodwater retarding
  structure.
• Storm Analysis
• - Determine peak flows for 5- and 100-year,
  24-hour rainfalls. Assume the site is located in
  a Type II Rainfall Distribution area.

4
Schematic For Example Problem
Reach 2
Sub-Area 2
Outlet
(Reach Routing)
Sub-Area 3
Reach 1
(Storage Routing)
Legend
Sub-Area 1
Storage Structure
Sub-Area Inflow Points
5
Data Sources

• The data presented in the next 5 slides have been
  gathered prior to inputting into WinTR-20.
• The data includes
• Sub-Area Watershed Characteristics
• Stream Reach Hydraulics
• Storage Structure Hydraulics
• Evaluation Storm Amounts and Distribution

6
Sub-Area Parameters
7
Reach Parameters
8
Reach 1 Structure Data

• Example problem assumes pool is empty (EL 2423.0)
  when storm begins.

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Reach 2 Rating Table

• Data derived from HECRAS, Mannings, etc.
• Reach Length 5400 feet, Bankfull Elevation
  2422.5

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Storm Data

• 5-Year 24-hour Rainfall Amount 3.7
• 100-year 24-hour Rainfall Amount 6.2
• Use Type II 24-hour Rainfall Distribution (built
  into WinTR-20)

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Getting Started - The Initial WinTR-20 Editor
Screen

• Using Windows Explorer, go to the WinTR-20
  Executables directory and click on
• The following WinTR-20 System Controller/ Editor
  Screen comes up

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WinTR-20 System Controller / Editor Window

• Click on the File menu, select New WinTR-20
  File

13
WinTR-20 Identifier Record

• WinTR-20 Identifier will appear.
• Select Input Units Code and Output Units
  Code (English or Metric)
• Enter Minimum Hydrograph Value
• Enter Watershed Description
• Accept Changes (Close) button to complete this
  record.

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Suggested Input Entry Order

• Enter storm event data
• Enter all sub-area(s) information
• Enter all reach(es) information
• Enter cross section rating data (elev, discharge,
  end area, top width, friction slope) and storage
  rating data (elev, discharge, storage) if model
  has reach or storage routing
• Global output preferences

15
Entering Storm Data

• Select Storm Analysis to enter rainfall
  amounts and distribution.

16
Storm Data

• 5-Year 24-hour Rainfall Amount 3.7
• 100-year 24-hour Rainfall Amount 6.2
• Use Type II 24-hour Rainfall Distribution
  (built-in to WinTR-20)

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Entering Storm Data

• Enter the 5- and 100-year rainfall amounts,
  distribution type, and Antecedent Runoff
  Condition (ARC - Default is 2).
• The Storm Identifier can be any alpha-numeric
  string.
• The screen to the right shows the user selecting
  the Type II Rainfall Distribution from the
  pull-down menu.

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Entering Storm Data

• The screen to the right shows the Storm
  Analysis window after data has been entered for
  both events.
• The data entry is completed by clicking Accept
  Changes (Close) button.

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Entering Storm Data

• Storm Analysis Input Notes
• Rain Gage Identifier is not required if
  WinTR-20 is executed using the same rainfall
  amount and distribution over the entire
  watershed.
• 2-Yr 24-Hr Rainfall is not required unless the
  Time of Concentration computation option for any
  Sub-Area is used.

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Enter Sub-Area Data

• Enter Sub-Area data by clicking on Sub-Area

21
Entering Sub-Area Data

• Enter data as shown for all three Sub-Areas.
• Sub-Area and Sub-Area Reach Identifier are
  user defined alpha-numeric names.
• Sub-Area Reach Identifier refers to the Reach
  that will receive the Sub-Areas hydrograph.

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Entering Sub-Area Data

• If a single rainfall distribution is being used
  for the whole watershed, Rain Gage Identifier
  is left blank
• Note output being requested for this Sub-Area
  Peak Flow and Hydrograph

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Entering Sub-Area Data (continued)

• After data for Area 1 has been entered, simply
  highlight the box containing Area 1 then type
  Area 2. Begin entering Area 2s data. Repeat
  for Area 3. Click Accept Changes (Close)
  button when finished.

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Getting Help

• To get help at any time on input parameters,
  simply click on the text for that input.
• A screen then appears with a description of the
  parameter.
• To close the help window, click on the input text
  line again.

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Sub-Area Parameters
26
Entering Stream Reach Data

• After all the Sub-Area data has been entered and
  accepted, the user is returned to the main input
  editor menu.
• Next, click on Stream Reach to enter reach
  data.

27
Entering Stream Reach Data

• Use pull down menu to select the stream reach
  needing input.
• The names that will appear in this pull down menu
  were defined during the Sub-Area data entry
  section (Sub-Area Reach Identifier).

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Reach Parameters
29
Entering Stream Reach 1 Data

• Reach 2 is the receiving reach for Reach 1.
• Reach 1 is a structure-type routing. The
  structure rating data (entered later) will be
  identified as Struct 1.
• Since this is a structure routing, no channel or
  valley lengths are used.

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Entering Stream Reach 2 Data

• Outlet (end of the watershed) is the receiving
  reach for Reach 2.
• Reach 2 is a channel-type routing. The channel
  rating data (entered later) will be identified as
  Xsec 2.
• Channel and valley lengths are the same in this
  example. No baseflow is assumed for this reach.

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Entering Structure Data

• After the Stream Data was entered and accepted,
  select Structure Rating from the main window.
• From the pull-down menu Struct 1 is selected.

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Reach 1 Structure Data

• Example problem assumes pool is empty (EL 2423.0)
  when storm begins.

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Entering Structure Data

• This example has WinTR-20 start the routing at
  the lowest elevation.
• Enter data one line at time for the Structure
  Elevation, Discharge and Storage
• The user can click on Display Data for a
  graphical view of the data just input.
• Click on Accept Changes (Close) button when
  finished.

34
Entering Stream Cross Section Data

• After the Structure Data was entered and
  accepted, the user is ready to enter the stream
  cross section data. The user selects Stream
  Cross Section

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Entering Stream Cross Section Data

• On the pull down menu, Xsec 2 is selected.

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Reach 2 Rating Table

• Data derived from HEC-RAS, Mannings, etc.
• Reach Length 5400 feet, Bankfull Elevation
  2422.5

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Entering Stream Cross Section Data

• On the pull down menu, Xsec2 is selected.
• Entered the required data.
• Cross Section Data entry is similar to the
  Structure Data - Use entry cells to the left and
  enter data one line at a time.

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Entering Stream Cross Section Data

• The user can click on Display Data for a
  graphical view of the data just input.
• Click on Accept Changes (Close) button when done

39
Entering Stream Cross Section Data

• Notes on Cross Section Data
• Data usually prepared ahead of time using water
  surface profile programs such as HEC-RAS.
• Bankfull Elevation represents the right or left
  channel bank whichever is lower.
• Low ground represents the elevation where flood
  plain storage begins. If blank, it defaults to
  bankfull elevation.
• Stream Identifier and Stream Station may be left
  blank (used only for NRCS Economic Analysis)

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Global Output

• After the Storm Data has been entered and
  accepted, the user is ready to enter the Global
  Output. The user selects Global Output

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Global Output

• Select Hydrograph Print Precision, Minimum
  Hydrograph Display Flow and Print Time Increment
  or use blank defaults.
• Select output options.
• At least one output option (Yes) must be selected.

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Saving Input File

• From the File menu, select Save As to give a
  file name and directory to save to.

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Checking Data Prior to Running WinTR-20

• Prior to running WinTR-20, it is useful to view
  the watershed Schematic.
• Under the View drop down menu on the
  Controller/ Editor screen, click on Schematic.

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Checking Data Prior to Running WinTR-20

• The Schematic shows how the sub-areas and reaches
  are configured.
• Make sure that Legend and Labels under the
  View options are turned on.

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Running WinTR-20

• After the file has been saved, the Run option
  will show in menu bar at the top.
• To run the program, simply click on the Run.

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WinTR-20 Output- Printed Page File

• Following a successful run, the Printed Page
  File screen comes up.
• For this example, peak discharge and hydrographs
  were requested for all sub-areas and stream
  reaches.
• Output can be sent to the printer or to a file
  from this screen.

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WinTR-20 Output- Debug File

• After viewing, the Printed Page File there may
  be other output to view.
• Click View and see if there is a Debug File.
• Output can be sent to the printer from this
  screen.

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WinTR-20 Output - Plots

• WinTR-20 also has graphical output capabilities.
• Following a successful run, the Plots option
  can be selected ...

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WinTR-20 Output - Plots

• In this example, the Hydrograph for Sub-Area 2
  100-year storm is requested.
• Note Hydrograph plots are only available if
  Hydrograph Output has been selected within the
  individual sub-area/stream reach or as a Global
  Output.

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WinTR-20 Output - Plots

• To view the Hydrograph, click on Display
  button.
• Options include printing, copying, and zooming in
  and out.

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WinTR-20 Output - Plots

• To plot two items on the same graph, select an
  option (Multiple Storms, Alternate or Location)
  under Multiple Hydrographs
• For this example (multiple location), a plot of
  the hydrograph into and out of the storage
  structure (Reach 1) for the 100-year event is
  selected.

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WinTR-20 Output - Plots

• To view the multiple Hydrograph plot, click on
  Display button.

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Global Output

• Instead of requesting individual output options
  within each sub-area and stream reach, the user
  can use the Global Output from the main menu.

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Global Output

• Global Output allows the user to select the same
  output for ALL sub-areas and stream reaches at
  once.
• For this example, hydrographs and peak discharge
  information will be output for all points in the
  watershed.

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Some Important Considerations

• Each time a change is made to the input data, the
  file must be saved before the Run option is
  presented.
• When bringing in an existing file, select No
  Changes (Close) to get the Run option to
  appear.
• All data input require a positive entry (i.e.
  carriage return, tab, or left mouse click in
  another data box) to be recognized.

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The End
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