The Wood Calculator was developed by North Arrow Research Ltd. in collaboration with the Kansas City District of the U.S. Army Corps of Engineers (USACE). Dr. Philip Bailey of North Arrow Research Ltd. developed the software, visual displays, and software code. Dr. John Shelley of USACE provided technical scoping, conceptual design, and testing of program features.

Funding for this initiative was provided by the USACE Engineering With Nature program to better assess Natural and Nature Based Features (NNBF) in river engineering and stream restoration designs. The goal of the tool is to provide engineers with a consistent and reliable process for assessing the stability of wood revetment structures, which will make the review and approval process for NNBF stream restoration projects more efficient.

The wood calculator is heavily based on work by Michael Rafferty and the United States Forest Service and the National Large Wood Manual.

Rafferty, M. 2016. Computational Design Tool for Evaluating the Stability of Large Wood Structures. Technical Note TN-103.2. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, National Stream & Aquatic Ecology Center. 27 p.

Bureau of Reclamation and U.S. Army Corps of Engineers. 2015. National Large Wood Manual: Assessment, Planning, Design, and Maintenance of Large Wood in Fluvial Ecosystems: Restoring Process, Function, and Structure. 628 pages + Appendix. www.usbr.gov/pn.