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INGY Cooperative
David Affleck, Director
(406) 243-4186

Inland Northwest Growth and Yield Cooperative


The Inland Northwest Growth & Yield (INGY) Cooperative was established in 1984 to provide an independent organization for addressing mutual technical problems and concerns of growth and yield of forests in the Inland Northwest. The cooperative consists of several private timberland owners, government agencies, and research institutions throughout the Inland Northwest. Together, specialists and analysts with these organizations have been able to identify and solve complex mensurational problems that simply would not have been possible if working by themselves. The original goals were to:

  • Identify, evaluate, and rank growth and yield needs in the Inland Northwest.
  • Develop managed stand yield tables for major species within the region.
  • Coordinate and initiate acquisition of high priority growth and yield information.
  • Encourage development of yield forecasting methods to improve forest management.
  • Facilitate the dissemination of growth and yield information.

The primary focus of the INGY research program in recent years has been the development of data sets and methodologies for modeling the growth of small trees, as well as an effort to evaluate existing regional equations for quantifying crown and stem components of whole tree biomass in interior conifers.