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TwoTrails Software

A thick stand of aspens.
What do you do where GPS is not available?

Two Trails icon

TwoTrails is available. This is a survey package which can incorporate and mix most type of surveying used to determine boundaries for forest service units, or to navigate to sample plots associated with the units. The Forest Management Service Center, Forest Products Measurement Group, has successfully used this package in forests exercises, experimental site tests, and academia arenas. This is a freeware survey package supporting NFS timber cruisers. Consult with your regional measurement specialist before using this program in production activities.

The following presentation briefly explains the purpose of the tool:

For more information, contact Gary Boyack at

Happy TwoTrails to You!

TwoTrails Software Registration Form

TwoTrails Version 2 is being released in a production mode with a caveat. All the basic survey functions work for production. Some of the advanced operations are still being tested, but appear to be stable. These advanced functions are secondary operations and are not necessary for basic operations.

If you are interested in trying the program, please complete and submit the registration form below. You may then download the files and follow the install guide. We will only use your information to help us determine where the tool is being tried. We may contact you to determine how we can better serve the timber cruising community.

NOTE: Required fields are marked with a red asterisk ( * ).

TwoTrails Software Version Version 2: v1.4.52-617, Build Date 6/17/2016
First Name *
Last Name *
Email Address *
(required format: "")
Unit (Region, Forest, Ranger District) * (Select "Other" at the end of this list if your location is not listed.)
If "Other", please note unit and location.
Telephone Number *
Would you like to be added to our mailing list to receive information about TwoTrails updates? * Yes No
After completing the form, submit your registration for the TwoTrails Software. Reset the form to start over.

USDA Forest Service
Forest Management Service Center
2150 Centre Avenue, Bldg. A
Fort Collins, CO 80526-1891

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Last modified: May 11, 2016