1. WinTR-20 Project Formulation Hydrology Computer Program Overview Presented by: WinTR-20 Development Team

2. WinTR-20 Overview March 2009 2 Objectives Background of the development: WinTR- 20 computer program Provide a brief description of the program Give an overview of the model, including its capabilities and limitations

3. WinTR-20 Overview March 2009 3Background Technical Release 20 Computer Program for Project Formulation Hydrology (TR-20) was first released in 1965 Revised in 1982, 1983, and 1986 Revision in February 1992 Major revision late 1998

4. WinTR-20 Overview March 2009 4 Background (continued) Major revision in late 1998 - WinTR-20 team was formed. - WinTR-20 team charge was to: 1. Modernize and revise the TR-20 computer software. 2. Upgrade the source code to Visual Basic. 3. Change the philosophy of data input. 4. Provide plots. 5. Windows interface and output post-processor. - First version of Windows based WinTR-20 was released in late September 2004.

5. WinTR-20 Overview March 2009 5 WinTR-20 New Features Muskingum-Cunge Channel Routing replaces ATT-KIN Sub-Area / Reach Routing Concept replaces old Standard Control Runoff Curve Number (RCN) Calculation Option Time of Concentration (Tc) Calculation Option

6. WinTR-20 Overview March 2009 6 WinTR-20 New Features (continued) Graphics - Hydrographs - Reach / Structure Rating - Schematic

7. WinTR-20 Overview March 2009 7 Model Overview WinTR-20 System Controller / Editor Capabilities / Limitations Minimum Data Requirements

8. WinTR-20 Overview March 2009 8 WinTR-20 System Controller / Editor - File File - New WinTR-20 File - Open Existing WinTR-20 File - ReOpen Last Session - Convert Old Data - Import HEC-RAS - Import NOAA Atlas Data - Local Land Use - Local Soil / HSG - Save - Save As - Exit New!

9. WinTR-20 Overview March 2009 9 WinTR-20 System Controller / Editor - View View - Schematic - Input File - Printed Page File - Error File - Debug File - Hydrograph File - FloodEcon File - Smoothed NOAA File

10. WinTR-20 Overview March 2009 10 WinTR-20 System Controller / Editor - Run Run

11. WinTR-20 Overview March 2009 11 WinTR-20 System Controller / Editor - Plots Plots - Hydrograph - Storm - Peak Flow - Time Analysis - Alternate - Location

12. WinTR-20 Overview March 2009 12 WinTR-20 System Controller / Editor - Help Help - WinTR-20 System Diagram - Overview - Help Facilities - Getting Started - About Controller / Editor - Smoothing NOAA 14 Data

13. WinTR-20 Overview March 2009 13 WinTR-20 System Controller / Editor – Data Section Alternate Analysis: Dimensionless Unit Hydrograph: Duration Increment: Global Output: Input Hydrograph: Rainfall Distribution: Stream Cross Section: Stream Reach: Storm Analysis: Structure Rating: Sub-Area: Time Analysis: WinTR-20: Version 1.11 Verification:

14. WinTR-20 Overview March 2009 14 WinTR-20 Identifier Window WinTR-20: Version 1.11 - Input Units Code: - Output Units Code: - Minimum Hydrograph Value: - Watershed Description:

15. WinTR-20 Overview March 2009 15 Close Window Buttons Two choices are given on most screens: - Accept Changes (Close) - Accept Changes (Close) – All data shown will written to the input file. Selecting this accepts the data you’ve entered and returns you to the previous screen. - No Changes (Close) - No Changes (Close) – None of the changes made to items in that window will be written to the input file. Select this to keep the original data and return to the previous screen.

16. WinTR-20 Overview March 2009 16 Sub-area/Reach Concepts Watershed - system of sub-areas and reaches Sub-areas - watersheds that generate runoff - feed into the upstream end of reaches Reaches or Routing Elements- represent watershed stream flow paths or structures –Channel Routing elements - Stream Reaches –Structure Routing elements - Reservoir/Structure Reaches Watershed Outlet -final reach (required for all watersheds)

17. WinTR-20 Overview March 2009 17 Sub-area/Reach Concepts Reaches - represent watershed flow paths (stream channels) or structures Watershed - system of sub-areas and reaches Sub-areas - watersheds that generate runoff

18. WinTR-20 Overview March 2009 18 Sub-area Connectivity Sub-area Receiving Reach A1R1 (storage) A2R2 (stream) A3Outlet

19. WinTR-20 Overview March 2009 19 Reach Connectivity Upper Reach Receiving Reach R1 (res.)R2 (stream) R2 (stream)Outlet R1 R2

20. WinTR-20 Overview March 2009 20 Reach 1 (storage routing)Schematics Reach 2 (Reach Routing ) Sub-area 3 Storage Area Sub-Area Inflow Points Legend Outlet Sub-area 2 Sub-area 1

21. WinTR-20 Overview March 2009 21 WinTR-20 Schematics

22. WinTR-20 Overview March 2009 22 Sub-Area: Window Sub-Area: - Sub-Area Identifier: - Sub-Area Reach Identifier: - Sub-Area Rain Gage Identifier: - Sub-Area Peak Output Code: - Sub-Area Hydrograph Output Code: - Sub-Area Time Analysis Code: - Sub-Area Hydrograph File Code: Land Use Details Tc Details

23. WinTR-20 Overview March 2009 23 Help Window Click on text variable name. Click on it again to remove the help.

24. WinTR-20 Overview March 2009 24 Stream Reach: Window

25. WinTR-20 Overview March 2009 25 Stream Cross Section: Window

26. WinTR-20 Overview March 2009 26 Structure Rating: Window

27. WinTR-20 Overview March 2009 27 Storm Analysis: Window

28. WinTR-20 Overview March 2009 28 Global Output: Window

29. WinTR-20 Overview March 2009 29 Rainfall Distribution: Window

30. WinTR-20 Overview March 2009 30 Input Hydrograph: Window

31. WinTR-20 Overview March 2009 31 Dimensionless Unit Hydrograph: Window

32. WinTR-20 Overview March 2009 32 Time Analysis: Window

33. WinTR-20 Overview March 2009 33 Alternate Analysis: Window

34. WinTR-20 Overview March 2009 34 Verification: Window

35. WinTR-20 Overview March 2009 35 Output Graphical Tabular

36. WinTR-20 Overview March 2009 36 File Management within WinTR-20 Input file“example.inp” Output file“example.out” Hydrograph file“example.hyd” Error file“example.err” Debug file“example.dbg”

37. WinTR-20 Overview March 2009 37 Capabilities & Limitations Types of reachesChannel or Structure Channel Manning “n”0.005-1.00 Reach RoutingMuskingum-Cunge Sheet Flow Max. Length100 feet Runoff Curve Number30-100 Weighted Curve Number30-100 Drainage Area 1 acre to 300 square miles Single sub-area min 1 acre - max 20 sq. miles

38. WinTR-20 Overview March 2009 38 Minimum Data Requirements Data required for a single sub-area run can be entered on the WinTR-20 System Controller/Editor Main Window. These data include: –WinTR-20 Identifier – Input and Output Units Code, Minimum Hydrograph Value, and Watershed Description –Storm Analysis Identifier – Gage Rain Table (Type I, etc.), Gage Antecedent Runoff Condition, and Rainfall Data –Sub-Area Identifier – Reach, Drainage Area, Weighted Curve Number, Time of Concentration (Tc), and Output Code (Peak, Hydrograph, Time Analysis, and Hydrograph File) –Global Output (at least one item selected).

39. WinTR-20 Overview March 2009 39 User Responsibility Results from the model can be sensitive to the input data. It is the user’s responsibility to ensure that all the input data (whether it is actually entered or implied through default values for blank data fields) is appropriate.

40. WinTR-20 Overview March 2009 40 WinTR-20 web sites NRCS users may find WinTR-20 by: Contact your state ITS for download Non-NRCS users may find WinTR-20 at: http://www.wsi.nrcs.usda.gov/products/W2Q/ H&H/Tools_Models/WinTR20.html E-mail questions to: LO-OR-NRCS-TR20@one.usda.gov

41. WinTR-20 Overview March 2009 41 WinTR-20 Development Team William H. MerkelMaryland301-504-3956 Helen Fox MoodyMaryland301-504-3948 Quan D. QuanMaryland301-504-3952 Dan MooreOregon503-414-3054 John McClungArkansas 501-210-8902 Pete CooperMinnesota651-602-7884 Geoff CerrelliPennsylvania717-237-2214 Thom GardayArkansas501-210-8905 Don WoodwardNRCS-Retired Roger CronsheyNRCS-Retired

42. WinTR-20 Overview March 2009 42 Summary Reviewed the background of the development for WinTR-20 Provided a brief description of the Program Gave an overview of the model including its capabilities and limitations

43. WinTR-20 Overview March 2009 43 The End

44. WinTR-20 Overview March 2009 44