Vegetation Resource Inventory (VRI) audits

Last updated on January 10, 2024

Tree Farm License (TFL)

Tree Farm License - Monitoring reports and publications:

An Integrated Growth and Yield Monitoring and Timber Inventory Program for TFL 5 (PDF, 85KB) JS Thrower & Associates, March 29, 2001
TFL 5 Change Monitoring Inventory Establishment Report (PDF, 178KB) JS Thrower & Associates, March 10, 2004
TFL 5 Change Monitoring Inventory Sample Plan (PDF, 240KB) JS Thrower & Associates, October 28, 2003
TFL 14 Spillimacheen Monitoring Options Report (PDF, 3MB) Timberline Forest Inventory Consultants, March 2002
Change Monitoring Inventory on TFL 30 First Measurement Results (PDF, 140KB) JS Thrower & Associates, March 15, 2002
TFL 30 Canadian Forest Products Pilot Change Monitoring Inventory Sample Plan (PDF, 100KB) JS Thrower & Associates, September 7, 2001
TFL 33 Change Monitoring Inventory Program Analysis of First Measurement Data (PDF, 310KB) Timberline Natural Resource, March 31, 2008
TFL 35 Jamieson Block Growth and Yield Monitoring Second Measurement Results Final Report (PDF, 290KB) Timberline Natural Resource, March 16, 2007
TFL 35 Growth and Yield Monitoring Pilot Project Year End Report (PDF, 2MB) JS Thrower & Associates, March 30, 2001
Pilot Test of A Growth and Yield Monitoring Program for Weyerhaeuser's TFL 35 Sample Plan (PDF, 110KB) JS Thrower & Associates, May 31, 2000
TFL 35 Growth and Yield Monitoring Pilot Project An Example Analysis of First Measurement Results (PDF, 560KB) JS Thrower & Associates, March 31, 2002
TFL 48 Change Monitoring Inventory Sample Plan (PDF, 230KB) JS Thrower & Associates, January 20, 2005
TFL 52 Blocks A and B Change Monitoring Inventory Time 2 Measurement Results (PDF, 270KB) Timberline Natural Resource, March 31, 2009
TFL 52 Change Monitoring Inventory Plot Analysis Final Report (PDF, 2MB) DR Systems Inc, April 19, 2007
West Fraser Mills Ltd TFL 52 Pilot Change Monitoring Inventory Sample Plan Second Year (PDF, 60KB) JS Thrower & Associates, July 15, 2002
TFL 55 Change Monitoring Inventory Establishment Results (PDF, 2MB) Timberline Natural Resource, March 22, 2010
TFL 55 Change Monitoring Inventory Sample Plan (PDF, 800KB) Timberline Natural Resource, March 2008

Tree Farm License - VRI analysis reports:

Vegetation Resources Inventory Statistical Adjustment for Lignum IFPA Area (PDF, 500KB) JS Thrower & Associates, March 2002
TFL 1 Vegetation Resources Inventory Attribute Adjustment (PDF, 900KB) Sterling Wood Group, March 2004
TFL 3 VRI Statistical Adjustment and NVAF Adjustment Addendum (PDF, 111KB) Jahraus & Associates, March 2005
TFL 3 Documentation of Analysis for VRI Statistical Adjustment (PDF, 1MB) TIB MoFR, January 2002
TFL 3 Supporting Excel Document, TIB MoFR (XLS, 40KB) January 2002
TFL 15 Vegetation Resources Inventory Statistical Adjustment (PDF, 170KB) JS Thrower & Associates, April 2003
TFL 18 Documentation of Vegetation Resources Inventory Statistical Analysis (PDF, 1MB) Forest Analysis Ltd., November 2012
TFL 18 Analysis of Intermediate Utilization (IU) Balsam Addendum to TFL 18 VRI Statistical Analysis (PDF, 770KB) Forest Analysis Ltd, December 2012
TFL 23 Vegetation Resources Inventory Attribute Adjustment (PDF, 320KB) Sterling Wood Group, May 2002
TFL 23 Analysis of Destructive Sampling Data (PDF, 700KB) Jahraus & Associates and Churlish Consulting, December 2009
TFL 25 WFP Blocks 1, 2 & 3 VRI Statistical Adjustment (PDF, 2MB) Timberline Natural Resource Group Ltd., July 2010
Yield Table Summary Report: Canfor TFL 30 - Prince George (MSYTs and NSYTS) (PDF, 240KB) JS Thrower & Associates, December 2000
TFL 37 VRI Statistical Adjustment (PDF, 70KB) JS Thrower & Associates, March 2002
TFL 45 VRI Year End Summary Report (PDF, 60KB) JS Thrower & Associates, March 2002
TFL 46 Documentation of VRI Statistical Analysis (Revised) (PDF, 2MB) Forest Analysis Ltd, January 2013
TFL 46 Vegetation Resources Inventory Statistical Analysis Whole Stem Volume Bias Assessment (PDF, 1MB) Forest Analysis Ltd., April 2013
TFL 47 VRI Adjustment Report (PDF, 630KB) TECO Natural Resource Group Ltd., October 2010
TFL 48 VRI Statistical Adjustment – CFC-007 (PDF, 150KB) JS Thrower & Associates, March 2003
TFL 48 VRI Statistical Adjustment – CFC-012 (PDF, 450KB) JS Thrower & Associates, March 2005
TFL 49 Documentation of Analysis for VRI Inventory Statistical Adjustment (PDF, 420KB) TIB-MoFR, March 2002
TFL 52 VRI Statistical Adjustment Preliminary Report (PDF, 120KB) JS Thrower & Associates, March 2003
TFL 52 VRI Statistical Adjustment Update (2009) (PDF, 300KB) Guillaume Thérien, March 2009
TFL 53 Documentation of VRI Statistical Analysis (PDF, 2MB) Forest Analysis Ltd., October 2012
TFL 55 VRI Statistical Adjustment (PDF, 610KB) Timberline Forest Consultants, October 2005

Timber Supply Area (TSA) - VRI analysis reports:

100 Mile House TSA VRI Analysis – Volume Audit (Mature) (PDF, 3MB) Forest Analysis and Inventory Branch (prepared by Margaret Penner), Sept. 7, 2017 (Revised)
Growth and Yield Monitoring Plan for the Fort St. John TSA Version 2 (PDF, 160KB) JS Thrower & Associates, March 31, 2003
Defining Forest Monitoring Business Needs for the Kamloops TSA (PDF, 200KB) JS Thrower & Associates, March 31, 2003
Dawson Creek TSA Phase II VRI Statistical Adjustment Report (PDF, 2MB) Ecora Resource Group Ltd, March 2012
Fort St. John TSA Inventory Analysis (PDF, 4MB) Jay Green Field Ecora Resource Group Ltd, September 2012
Fort St. James Forest District Statistical Adjustment (DRAFT) (PDF, 670KB) Wenli Xu MoFR, December 2008
Fort St. James Forest District VRI Statistical Analysis and Adjustment (Final) (PDF, 2MB) Timberline Natural Resource Group Ltd., January 2010
Haida Gwaii Documentation of VRI Analysis - Volume Audit (Mature) (PDF, 2MB) FLNRO and Forest Analysis Ltd, March 16, 2018
Golden TSA – Documentation of Analysis for VRI Statistical Adjustment and Net Volume Adjustment Factor Development (PDF, 4MB) Jahraus & Associates and Churlish Consulting, March 2007
Invermere TSA VRI Statistical Adjustment (version 2.0) (PDF, 2MB) Timberline Natural Resources Group Ltd., September 2009
Kamloops TSA – Documentation of VRI Analysis (PDF, 3MB) Margaret Penner Forest Analysis Ltd., February 2015
Kamloops TSA – Documentation of VRI Ground Sample Inventory Analysis Final Report (PDF, 2MB) Jahraus & Associates and Churlish Consulting, January 2008
Kootenay Lake TSA Documentation of VRI Analysis (PDF, 2MB) Margaret Penner Forest Analysis Ltd., October 2013
Estimating Inventory Attributes for the Lakes Timber Supply Area from Remeasured Vegetation Resources Inventory Ground Data (Technical Report 078) (PDF, 670KB) MoFLNRO Gordon D. High, 2013
Lakes TSA VRI Analysis – Volume Audit (Mature) (PDF, 3MB) Forest Analysis and Inventory Branch (prepared by Margaret Penner, July 12, 2018
Inventory Analysis of the Mackenzie TSA (PDF, 2MB) Ecora Resource Group Ltd, December 2012
Merritt TSA Ground Sample Mature Stand Analysis – Final (PDF, 2MB) Associated Strategic Consultant Experts, March 2015
Morice TSA Inventory Analysis (PDF, 1MB) Jahraus Consulting Inc, March 2013
Morice TSA Inventory Analysis – Addendum (Stand and Stock Tables for the Morice TSA) (PDF, 5MB) Jahraus Consulting Inc., March 2013
Prince George TSA VRI Analysis – Volume Audit (Mature) (PDF, 6MB) Forest Analysis and Inventory Branch (prepared by Margaret Penner) May 1, 2018 (Revised)
Quesnel TSA East Documentation of VRI Statistical Analysis (PDF, 4MB) Churlish Consulting and Jahraus & Associates, November 2011
Robson Valley TSA Documentation of Analysis for Net Volume Adjustment Factor and Vegetation Resources Inventory Statistical Analysis (PDF, 2MB) Churlish Consulting and Jahraus & Associates, March 2011
Strathcona TSA VRI Statistical Analysis Addendum: Analysis of Model and Attribute-Related Components of Volume Bias (PDF, 590KB) Churlish Consulting and Jahraus & Associates, December 2011
Strathcona TSA Documentation of Vegetation Resources Inventory Statistical Analysis (PDF, 4MB) Churlish Consulting and Jahraus & Associates, November 2011
Williams Lake TSA Documentation of Vegetation Resources Inventory Analysis with Stand and Stocking Tables (PDF, 3MB) Margaret Penner Forest Analysis Ltd, June 2014
Vanderhoof Forest District Documentation of Analysis for VRI Statistical Adjustment (DRAFT) (PDF, 590KB) November 2008

Innovative Forestry Practices Agreement (IFPA) reports:

Change Monitoring Inventory Pilot Project for the Adams Lake IFPA Strategic Implementation Plan (PDF, 80KB) JS Thrower & Associates, March 31, 2002
Interfor Hope IFPA Change Monitoring Inventory Pilot Project First Measurement Results (PDF, 120KB) JS Thrower & Associates, March 31, 2002
Change Monitoring Inventory Pilot Project for the Merritt IFPAs Strategic Implementation Plan (PDF120KB) JS Thrower & Associates, March 21, 2002
Change Monitoring Inventory Pilot Project for the Merritt IFPAs Strategic Implementation Plan Version 2 (PDF, 170KB) JS Thrower & Associates, March 31, 2003

Contact information

For more information on VRI Audits Reports, contact the Inventory Analysis and Reporting Team Lead.

Team Lead - Inventory Analysis and Reporting
Dan.Turner@gov.bc.ca

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