Win TR20 Project Formulation Hydrology Converting Old TR20

Win. TR-20 Project Formulation Hydrology Converting Old TR-20 Input Files to New Win. TR-20 Format Presented by: Win. TR-20 Development Team Win. TR-20 Data Converter March 2009 1

Win. TR-20 Data Converter l The data converter subprogram is within the new Win. TR-20 editor. l Converts most items in the old TR-20 input data set (Version dated 1983 and later). l The data can be run in the present Win. TR -20 format. Win. TR-20 Data Converter March 2009 2

Win. TR-20 Data Converter (continued) l Some features in the old TR-20 program are not used in the New Win. TR-20 and will not translate. l These features will be ignored during the conversion: - Runoff Option in Rainfall Distribution Table - IPEAKS (intermediate peak output) - Multiple time increments (new Win. TR-20 will take care of this automatically). Win. TR-20 Data Converter March 2009 3

Win. TR-20 Converter Output Option Considerations l The output options used in the Old TR 20 input files translate over to the new version. l The user could revise the output parameters in the new data file: - Global Output - Sub-Area or Reach record Win. TR-20 Data Converter March 2009 4

Win. TR-20 Converter Reach Routing Considerations Reach routing has been revised in the new program, the user will have to input additional data. l The routine in the new Win. TR-20 (Muskingum. Cunge) requires: l - Elevation Discharge End Area Top Width EG Slope tables for ALL reach routing Win. TR-20 Data Converter March 2009 5

Win. TR-20 Converter Reach Routing Considerations (continued) There is no provision for parametric routing (i. e. the “X” and “m” option with the old TR-20 ATT-KIN method) in the new version. l Any reach section using “X” and “m” in the Old data will have to have a complete reach routing table developed (Elevation, Discharge, End Area, Top Width, and EG Slope). l Win. TR-20 Data Converter March 2009 6

Win. TR-20 Converter Reach Routing Considerations (continued) l If Old TR-20 data set had “XSECTN” tables: – Converter program will calculate the top width from the old TR-20 “XSECTN” table data. – User only has to add the friction slope to the rating table. Win. TR-20 Data Converter March 2009 7

Example Converting Old TR-20 Data File to New Win. TR-20 Format Win. TR-20 Data Converter March 2009 8

Win. TR-20 Converter Example l Double click on Win. TR-20 icon. l Win. TR-20 System Controller / Editor Window will pop up. l Click on “Convert old Data” from the “File” pull down m Win. TR-20 Data Converter March 2009 9

Win. TR-20 Converter Example (continued) l Select Old TR-20 data file to convert (Example: A 1. dat) Win. TR-20 Data Converter March 2009 10

Win. TR-20 Converter Example (Continued) l After Old TR-20 data file selected and converted – Win. TR-20 Identif l You may make changes to: - Min. Hydrograph Values: - Watershed Description: l Click “Accept Changes” if changes were made, otherwise click “No Win. TR-20 Data Converter March 2009 11

Win. TR-20 Converter Example (continued) l l Win. TR-20 System Controller / Editor Window will appear. Select “Stream Cross Section: ” to add the missing “EG Slope”. Win. TR-20 Data Converter March 2009 12

Win. TR-20 Converter Example (continued) l l l Select “Stream Cross Section - Xsec 1” from pull down m Cross Section data will appear. “Top Width” values – calculated automatically from old T Win. TR-20 Data Converter March 2009 13

Win. TR-20 Converter Example (continued) l l l To enter the missing “E. G. Slope”: – Click on the line from the table; – Data appears; – Enter “E. G. Slope”; Click on “Display Data” button to view Cross Section plot. Click on “Accept Changes (Close)” button to close this window. Win. TR-20 Data Converter March 2009 14

Win. TR-20 Converter Example (continued) l Peak Output and Hydrograph Output for “Sub-Area” and “Reach” – c l “Global Output” Window will appear. l At least one item on this window needs to be selected (either Yes or an Win. TR-20 Data Converter March 2009 15

Win. TR-20 Converter Example (continued) l The User can enter or leave blank as default – Hydrograph Print Precision: – Minimum Hydrograph Display Flow: – Print Time Increment: l l For Peak Output and Hydrograph Output for “Sub-Area” and “Reach” – check “Yes” Click on “Accept Changes (Close)” button to close this window. Win. TR-20 Data Converter March 2009 16

n. TR-20 Converter Example (continu l l l Save new Win. TR-20 data – select “Save As” from the “File Give a new file name with “. inp” extension. Click “Save” to continue. Win. TR-20 Data Converter March 2009 17

Win. TR-20 Converter Example (continued) l l To view the schematic - select “Schematic” from the “View If the schematic looks OKAY! – exit the schematic window Win. TR-20 Data Converter March 2009 18

Win. TR-20 Converter Example (continued) l l To view the Input File - select “Input File” from the “View Click “Close” button to exit this window. Win. TR-20 Data Converter March 2009 19

Win. TR-20 Converter Example (continued) l l l To perform the calculation – select “Run” from the main me After a successful run – the Win. TR-20 Printed Page File wil You are Done! Win. TR-20 Data Converter March 2009 20

The End Win. TR-20 Data Converter March 2009 21

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