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

2. WinTR-20 Overview June 2015 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 2

3. WinTR-20 Overview June 2015Background 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 3

4. WinTR-20 Overview June 2015 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. 4

5. WinTR-20 Overview June 2015 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 –CN Adjustment Based on ARC –CN Reduction 5

6. WinTR-20 Overview June 2015 WinTR-20 New Features Time of Concentration (Tc) Calculation Option –Lag Method –Velocity Method Principal Spillway Data Stability Freeboard Data 6

7. WinTR-20 Overview June 2015 WinTR-20 New Features (continued) Graphics - Hydrographs - Reach / Structure Rating - Schematic 7

8. WinTR-20 Overview June 2015 Model Overview WinTR-20 System Controller / Editor Capabilities / Limitations Minimum Data Requirements 8

9. WinTR-20 Overview June 2015 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 - Import NRCC Data - Local Land Use - Local Soil / HSG - Save - Save As - Exit 9

10. WinTR-20 Overview June 2015 WinTR-20 System Controller / Editor - View View - Schematic - Input File - Printed Page File - Error File - Debug File - Hydrograph File - Smoothed NOAA/NRCC File 10

11. WinTR-20 Overview June 2015 WinTR-20 System Controller / Editor - Run Run 11

12. WinTR-20 Overview June 2015 WinTR-20 System Controller / Editor - Plots Plots - Hydrograph - Peak Flow - Storm - Location 12

13. WinTR-20 Overview June 2015 WinTR-20 System Controller / Editor - Help Help - WinTR-20 System Diagram - Overview - Help Facilities - Getting Started - About Controller / Editor - Smoothing NOAA/NRCC Data 13

14. WinTR-20 Overview June 2015 WinTR-20 System Controller / Editor – Data Section Dimensionless Unit Hydrograph: Global Output: Input Hydrograph: Rainfall Distribution: Stream Cross Section: Stream Reach: Storm Analysis: Structure Rating: Sub-Area: WinTR-20 Identifier: Verification: Principal Spillway Data: Stability Freeboard Data: New! 14

15. WinTR-20 Overview June 2015 WinTR-20 Identifier Window WinTR-20 Identifier: - Input Units Code: - Output Units Code: - Minimum Hydrograph Value: - Watershed Description: 15

16. WinTR-20 Overview June 2015 Close Window Buttons Two choices are given on most screens: - Accept Changes (Close) - Accept Changes (Close) – All data shown will be 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

17. WinTR-20 Overview June 2015 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

18. WinTR-20 Overview June 2015 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

19. WinTR-20 Overview June 2015 Sub-area Connectivity Sub-area Receiving Reach A1R1 (storage) A2R2 (stream) A3Outlet 19

20. WinTR-20 Overview June 2015 Reach Connectivity Upper Reach Receiving Reach R1 (res.)R2 (stream) R2 (stream)Outlet R1 R2 20

21. WinTR-20 Overview June 2015 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

22. WinTR-20 Overview June 2015 WinTR-20 Schematics 22

23. WinTR-20 Overview June 2015 Sub-Area: Window Sub-Area: - Sub-Area Identifier: - Sub-Area Reach Identifier: - Sub-Area Rain Gage Identifier: - Sub-Area Drainage Area: - Sub-Area Weighted Curve Number: - CN Adjustment Based on ARC: - CN Reduction: - Sub-Area Time of Concentration: - Sub-Area Peak Output Code: - Sub-Area Hydrograph Output Code: - Sub-Area Hydrograph File Code: 23

24. WinTR-20 Overview June 2015 Sub-Area: Window (continued) Land Use Details Tc Details –Velocity Method –Lag Method 24

25. WinTR-20 Overview June 2015 Help Window Click on text variable name. Click on it again to remove the help. 25

26. WinTR-20 Overview June 2015 Stream Reach: Window 26

27. WinTR-20 Overview June 2015 Stream Cross Section: Window 27

28. WinTR-20 Overview June 2015 Structure Rating: Window 28

29. WinTR-20 Overview June 2015 Storm Analysis: Window 29

30. WinTR-20 Overview June 2015 Global Output: Window 30

31. WinTR-20 Overview June 2015 Rainfall Distribution: Window 31

32. WinTR-20 Overview June 2015 Input Hydrograph: Window 32

33. WinTR-20 Overview June 2015 Dimensionless Unit Hydrograph: Window 33

34. WinTR-20 Overview June 2015 Verification: Window 34

35. WinTR-20 Overview June 2015 Principal Spillway Hydrograph Data: Window 35

36. WinTR-20 Overview June 2015 Stability/Freeboard Hydrograph Data: Window 36

37. WinTR-20 Overview June 2015 Output Graphical Tabular 37

38. WinTR-20 Overview June 2015 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” Smoothed NOAA/NRCC file “example.dff” 38

39. WinTR-20 Overview June 2015 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 Single sub-area min 0.1 acre - max 50 sq. miles 39

40. WinTR-20 Overview June 2015 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 NO_A, etc.), Gage Antecedent Runoff Condition, and Rainfall Data –Sub-Area Identifier – Receiving Reach Outlet, Drainage Area, Weighted Curve Number, Time of Concentration (Tc) –Global Output (at least one sub-area output item selected). 40

41. WinTR-20 Overview June 2015 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. 41

42. WinTR-20 Overview June 2015 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://go.usa.gov/KoZ Select WinTR-20 E-mail questions to: LO-OR-NRCS-TR20@one.usda.gov 42

43. WinTR-20 Overview June 2015 WinTR-20 Development Team 43

44. WinTR-20 Overview June 2015 WinTR-20 Development Team William H. MerkelMaryland301-504-3956 Helen Fox MoodyMaryland301-504-3948 Quan D. QuanMaryland301-504-3952 Dan MooreOregon503-414-3054 John McClungNRCS-Retired Pete CooperNRCS-Retired Thom GardayNRCS-Retired Geoffery CerrelliNRCS-Retired Don WoodwardNRCS-Retired Roger CronsheyNRCS-Retired 44

45. WinTR-20 Overview June 2015 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 45

46. WinTR-20 Overview June 2015 The End 46

47. WinTR-20 Overview June 2015 47