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Hydrology, Hydraulics, and Wetland Resources

Notice – The following spreadsheets, computer programs and supporting documentation are tools to assist with typical hydrologic or hydraulic calculations or wetland hydrologic evaluations.  The engineering practitioner must understand the assumptions and calculations contained in these tools and is responsible for their appropriate use.  Some of the spreadsheets contain macros. 

Many additional engineering spreadsheets are available in the Wisconsin Engineering Spreadsheets section.


NRCS Wisconsin Hydrology Resources:

NEW January 2015 - Updated EFH2 Spreadsheet (including NOAA Atlas 14 Precipitation Data)

NEW January 2015 - Updated TR55 Spreadsheet (including NOAA Atlas 14 Precipitation Data)

NEW January 2015 - Retrieving Hydrologic Soil Group Data from NRCS Web Soil Survey (Wisconsin Supplement to the NEH Part 650, Chapter 2)

NEW January 2015 – Information about NOAA Atlas 14 Precipitation Data Updates for Wisconsin

NEW January 2015 – Additional NRCS WI Spreadsheets with updated precipitation data

NRCS National Hydrology Resources:

EFH-2 Peak Discharge Determination Computer Program

Wisconsin precipitation and soils files for EFH-2 computer program:

Note for NRCS Users : for above 3 files, Save As and then save to:
C: Users\YourName\AppData\Local\VirtualStore\Program Files (x86)\USDA\EFH2.
(For information see Appendix 2 of the Wisconsin Supplement to NEH Part 650 Chapter 2, link given above)

WinTR-55 Watershed Hydrology Computer Program

WinTR-20 Watershed Hydrology Computer Program 



NRCS Wisconsin Hydraulics Resources:
NRCS National Hydraulics Resources:

Wetland Resources

NRCS Wisconsin Wetland Resources:

Precipitation Evaluation (Wet, Dry & Normal) Spreadsheets

Information about NOAA Atlas 14 Precipitation Updates See "Hydrology" Section above.

NRCS National Wetland Resources:


For more Information email: