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Measuring Timber and Woody Biomass in San Juan Forests Lopez Island


Engaging with woodland owners in San Juan County to address the unique challenges of managing island forests for both ecological health and economic viability.

Increasingly, forest owners in San Juan County are seeking guidance on how to manage their overstocked stands for improved forest health. They are also looking for creative ways to use the excess woody material that is a byproduct of restoration. For the past six years, NNRG and our partners have worked in many island forests, conducting one-on-one site visits, developing management plans, and hosting tours and classes.

In 2018, we are hosting a series of workshops for forest landowners interested in reducing the risks of wildfire, diseases, and lost value in their woods by removing and using the extra woody biomass in creative and productive ways.

Measuring Timber and Woody Biomass in San Juan Forests

Saturday, April 28, 2018 | Lopez Island


Learn how to use basic forestry tools to install inventory plots to measure timber volumes and distinguish between merchantable and non-merchantable trees.

Strategies to estimate the volume of timber and woody biomass in your forest

Understanding which and how many trees need to be removed from your forest is critical to a successful thinning project. This workshop will introduce participants to basic strategies for installing forest inventory plots and collecting sufficient data to calculate timber volumes. We will learn how to distinguish between merchantable and non-merchantable trees, and discuss options for utilizing non-merchantable woody biomass.

This workshop is the second in a three-part series on woody biomass in the San Juans. You may also be interested in our February 24th workshop, Thinning Overstocked Stands for Health and Productivity, and our June 30th workshop, How to Manufacture Biochar from Woody Biomass.

Topics include:

  • How to set up a basic forest inventory system
  • How to use basic forest inventory tools
  • Templates to calculate timber and woody biomass volumes
  • Converting timber volume to value
  • What makes timber merchantable or non-merchantable
  • Biomass utilization methods including habitat, soil improvement, firewood, chips, biochar, bioenergy and more
  • Funding resources to help you pay for an inventory and management plan


  • Kirk Hanson | Northwest Natural Resource Group – Kirk owns owns 100 acres of forest in western Washington, and has been working on behalf of small woodland owners for over 20 years.

Details and registration:

WHEN: Saturday, April 28, 2018
WHERE: Midkiff Family Forest, Lopez Island, WA - we will send out directions and event times to registrants.

All forest owners are encouraged to attend!
For more information, go to:

This workshop is offered at no cost thanks to grant funding from:

Risk Management Agency



San Juan Islands Conservation District
Rain Shadow Consulting
Forage Media

Photos: NNRG; Matt Freeman-Gleason