Mail:   Phone: 1-360-276-8211 x7001


Quinault Inventory Management Program

Quinault Inventory Management Department
Different levels of tree inventory on Quinault lands

The Quinault Inventory Management Program believes that the prevailing reason for conducting a forest inventory is to make informed decisions about forest management on the Quinault Indian Nation lands. A forest inventory is the systematic collection of data and forest information for calculation or study.

The primary need of a forest inventory is the quantification of volumetric product harvest and structural composition of the forest. The volume of the timber resource is typically categorized by species, product and size. In addition, quantities like the number of trees and basal area per unit area are often desired. While collection of data on other components of the ecosystem is increasing, the timber resource still remains the main focus for most forest inventories.

Forest inventory basically is an accounting of trees and their related characteristics of interest over a well-defined land area. Forest inventories seek to tally the population of trees within a forest and ascertain other information, such as their volume, value, growth and species composition. Tree populations vary widely in their species composition, age, size, site requirements, potential value, longevity and growth, all factors that may influence the design of a forest inventory.

Quinault Inventory Management Program | Quinault Forestry Department
Maintaining tree inventory on the Quinault Indian Nation lands

The Quinault Inventory Management Program uses timber inventories as the main tool to determine the size and worth of standing trees on a forested tract. A timber inventory, like any inventory, involves taking stock of how much material is available. While timber inventories have traditionally been performed to place a value on a stand before sale, they are also useful for providing information for the development of management strategies, estate planning, tax basis or litigation.

Different methods are required for differing spatial scales, but these inventories often are used to meet entirely different objectives. Both spatial and temporal scales are normally addressed in the planning of an inventory. There are numerous motives or intentions for conducting a forest inventory; the most common of these include:

  • Silviculture prescriptions
  • Regeneration surveys
  • Harvest or operational inventory
  • Appraisal surveys
  • Strategic inventories

Quinault Inventory Management Inventory Types

Quinault Inventory Management | Quinault Forestry Department
A large Sitka Spruce on Quinault land

There are three basic types of inventory. The measurements made on individual trees are identical, regardless of the type of inventory. The methods differ in two significant aspects. The first difference is in the method for selecting the trees that will be measured. The second difference is in the formulas used for calculating the volume per acre and the trees per acre.

  • Inventory type 1 – 100 percent tally or sampling
  • Inventory type 2 – Fixed radius plot sampling
  • Inventory type 3 – Variable-radius plot sampling (also known as anglegauge sampling, prism sampling or point sampling)

Quinault Inventory Management Program “Cruises”

A forest inventory or cruise determines the location of timber and estimates its quantity by species, product potential, size, quality, or other characteristics. A cruise may be conducted for land acquisition or sale, a timber sale, stand management decisions or other objectives.

Forestry Manager, Jim Plampin  »  360.276.8215 x7290

Special Projects Forester, David Ryan  »  360.276.8215 x7131

Inventory Forester, Larry Wiechelman  »  360.276.8215 x7247

Forestry Inventory Technician V,  »  360.276.8215 x7518

Forestry Inventory Technician IV, Ron Hongell  »  360.276.8215 x7103

Forestry Inventory Technician IV, Matt Hartstrom  »  360.276.8215 x7306

Additional Quinault Inventory Management Resources:

Quinault 2017 Forest Management Plan

Quinault Forestry Department

U.S. Forest Service

Bureau of Indian Affairs (Taholah Agency)

Forest Landowners Association

Washington Department of Natural Resources