wintr-20 advanced features march 2009 1 wintr-20 project formulation hydrology computer program...

WinTR-20 Advanced Features March 2009

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WinTR-20WinTR-20 Project Formulation HydrologyProject Formulation Hydrology

Computer ProgramComputer Program

Advanced FeaturesPresented by:

WinTR-20 Development Team


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Nine FeaturesNine FeaturesLocal Land Use and Local Soil DataLand Use DetailsTime of Concentration DetailsDiversionsTime analysisDimensionless unit hydrograph (DUH)Custom rain tableInput hydrographAlternative


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Local Land UseLocal Land Use

Open WinTR-20.Open New WinTR-20 file.Provide a watershed description and

Accept.Enter Local Land Use and/or Local Soil

Data.


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Local Land UseLocal Land UseClick file and Local Land Use


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Local Soil DataLocal Soil Data


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Data will be saved for future WinTR-20 sessions.


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Land Use DetailsLand Use Details


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Tc DetailsTc Details


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CN and Tc Detail OutputCN and Tc Detail Output


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CN and Tc Details OutputCN and Tc Details Output


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DiversionsDiversions


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Diversion optionsDiversion optionsDivert flow over a certain value.Divide flow based on two rating curves.Send diverted flow outside the watershed.Send the diverted flow to another stream

reach.


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Diversion exampleDiversion example


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Time AnalysisTime AnalysisTime analyses may assist with determining

economic damages caused by flood water. At any reach and cross section, the time at

which a particular discharge or elevation is exceeded may be determined.

For example, what is the time for which an elevation of 500 feet is exceeded at a particular cross section ?


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Time AnalysisTime Analysis


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Time Analysis SummaryTime Analysis Summary

Select time analysis based on Flow or Elevation

Flow or Elevation are both useful for reaches with valley cross sections

Elevation is generally more useful for Structures

Select all Sub-areas and Reaches or specific ones.


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Dim Unit HydrographDim Unit Hydrograph


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DUH’s with peak rate factors are available for values of 100 to 600 at an interval of 50.

These are included in the revised Chapter 16 of NEH – Hydrology.

An example is shown next.


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These may be copied and pasted into the WinTR-20 data file using Notepad or a similar text editor.


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Custom Rain TableCustom Rain Table

WinTR-20 has standard rainfall distribution tables available for selection.

These include the commonly used Type II and Type III.

To enter a custom rainfall table, open the Rainfall Distribution data window.


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More than one rainfall table may be entered.

To transport rainfall tables from one WinTR-20 data file to another, use Notepad to copy and paste.


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Input HydrographInput Hydrograph

A hydrograph coming from another source may be inserted into the stream network.

The hydrograph may be coming in from a neighboring watershed.

The hydrograph may have been developed by another procedure such a dam break hydrograph.


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After selecting the Hydrograph Output file close WinTR-20.

Rename the Hydrograph Output file to a different name and change extension to .inp

Open WinTR-20, open Existing Input File and select the file with Hydrograph Output.


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Alternative AnalysisAlternative Analysis


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wintr-20 advanced features march 2009 1 wintr-20 project formulation hydrology computer program...

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