1. Using Northeast Regional Climate Center (NRCC) Data with WinTR-20
Prepared by Quan D. Quan
Hydraulic Engineer, WNTSC
Hartford, Connecticut
October 26, 2010
NRCC Data - Connecticut October 2010
NRCC Data with WinTR-55

2. Program to convert NRCC text file and import it into WinTR-20
Program is incorporated into Windows interface;
Reads NRCC text file created by the user thru download;
After downloading text file, open WinTR-20 Windows interface and click “File” then “Import NOAA – NRCC Data”;
Rainfall Distribution and Rainfall Data comes as a part of the Window WinTR-20 system.
NRCC Data - Connecticut October 2010

3. Northeast Regional Climate Center web site:
Open the NRCC web site at or
NRCC Data - Connecticut October 2010

4. Import NRCC Data into WinTR-20
Click on “Data & Products” tab.
NRCC Data - Connecticut October 2010

5. Import NRCC Data into WinTR-20
NRCC Data - Connecticut October 2010

6. Import NRCC Data into WinTR-20
NRCC Data - Connecticut October 2010

7. Import NRCC Data into WinTR-20
NRCC Data - Connecticut October 2010

8. Import NRCC Data into WinTR-20
NRCC Data - Connecticut October 2010

9. Import NRCC Data into WinTR-20
Using Windows Explorer, go to the “WinTR-20 Executables” directory and click on
The following WinTR-20 System Controller/ Editor Screen comes up:
NRCC Data - Connecticut October 2010

10. Import NOAA Data into WinTR-20
Select “Import NOAA –NRCC Data” from “File” pulldown menu.
Locate the directory, select text file name “CT_Windham.txt”
NRCC Data - Connecticut October 2010

11. Import NRCC Data into WinTR-20
Option to smooth the NOAA-NRCC Data ? Yes, for this example.
NRCC Data - Connecticut October 2010

12. Import NRCC Data into WinTR-20
WinTR-20 Identifier window will pop up
Edit / Enter
- Min. Hydrograph Value
- Watershed Description
Click “Accept Changes
(Close)” to close
this window
NRCC Data - Connecticut October 2010

13. Import NRCC Data into WinTR-20
Brings you back to the WinTR-20 System Controller / Editor window
Double click on “Storm Analysis:”
Double click on “Rainfall Distribution:”
Note: the “sm” in the rainfall table identifier means this is a smoothed distribution.
Note: (X indicates some data entered for section)
NRCC Data - Connecticut October 2010
Import NOAA Atlas Data

14. Import NRCC Data into WinTR-20
Double click on “Storm Analysis:”
Click “No Changes (Close)” button to close this window.
NRCC Data - Connecticut October 2010

15. Import NRCC Data into WinTR-20
Select “Rain Table Identifier:” from pull down menu.
Click “Display Data” button for graphical view of the Rainfall Distribution.
Click “No Changes (Close)” button to close this window.
NRCC Data - Connecticut October 2010

16. NRCC Data - Connecticut October 2010
Standard Curve
Smooth Curve
NRCC Data - Connecticut October 2010

17. Import NRCC Data into WinTR-20
From “File” menu, select “Save As” – give a file name and location.
“Run” button is now available.
NRCC Data - Connecticut October 2010

18. Import NRCC Data into WinTR-20
Try to “Run” WinTR-20
Generated WinTR-20 Error File
- No Stream Reach data
- No Sub-Area data.
NRCC Data - Connecticut October 2010

19. Import NRCC Data into WinTR-20
Warning – do not import NOAA-NRCC data to an existing WinTR-20 file using the WinTR-20 Controller/Editor. The existing data will be erased and replaced by NOAA-NRCC Data.
Instead, save the WinTR-20 input file containing NOAA-NRCC Data, close WinTR-20, and use Notepad to copy and paste the data into the existing WinTR-20 data file.
NRCC Data - Connecticut October 2010

20. Demonstration Using NRCC Data
NRCC Data - Connecticut October 2010

21. NRCC Data - Connecticut October 2010
Demonstration
Double click on “Sub-Area:”
Enter the Sub-Area information
NRCC Data - Connecticut October 2010

22. NRCC Data - Connecticut October 2010
Demonstration
Enter “Sub-Area Identifier:”
Enter “Sub-Area Reach Identifier:”
Enter “Sub-Area Drainage Area:”
Enter “Weighted Curve Number:”
Enter “Sub-Area Time of Concentration:”
NRCC Data - Connecticut October 2010

23. NRCC Data - Connecticut October 2010
Demonstration
Double click “Global Output:”
Click “Yes” for Default Peak Output Code:
Click “Yes” for Default Hydrograph Output Code:
Click “Accept Changes (Close)” button
NRCC Data - Connecticut October 2010

24. NRCC Data - Connecticut October 2010
Demonstration
Click “Save” button
Now you’re ready
NRCC Data - Connecticut October 2010

25. Windham County, Connecticut
Demonstration
Determine the runoff volume and peak discharge for the current (existing) watershed conditions.
Drainage Area (Area 1)
24.50 ac / 0.04 sq.mi.
Runoff Curve Number 74
Time of Concentration
0.237 hours
Windham County, Connecticut
NRCC Data - Connecticut October 2010
NRCC Data with WinTR-55

26. Results – Demo Windham, Connecticut
NRCC Data
Rainfall Data
25-Year
5.94 in
Rainfall Distribution Type
WinTR-20
Peak Discharge
74.8 cfs
Runoff Amount
3.120 in
NRCC Data - Connecticut October 2010
NRCC Data with WinTR-55

27. NRCC Data - Connecticut October 2010
Questions ?
NRCC Data - Connecticut October 2010

28. NRCC Data - Connecticut October 2010
The End
NRCC Data - Connecticut October 2010
Import NOAA Atlas Data