FVS20260401

• Update to Dead Tree Default Decay Code
• Addition of New Pre-Defined Event Monitor Variables
• Additional Outputs to Summary2 Table
• Additional Output to Inventory Reference Table

FVS20250930c

B-Tagged release had error in NVEL submodule commit. This release should correct.

20250930 Release corrected for improved Linux environment builds
FIA Volume, Biomass, and Carbon computational methods added
Read / Track Additional Inputs for FIAVBC from FVS_StandInit / FVS_PlotInit / FVS_TreeInit Tables
Expansion of STDINFO Keyword for FIAVBC
Standardization of FVS Tabular Outputs
Updates to Event Monitor Variables
Updates to SPMCDBH, DBHDIST, and SUMSTAT Event Monitor Functions
New Inventory Reference Table
Modification to FVS_Stats_Stand and FVS_Stats_Species Tables
Modification to Cubic and Board Foot Volume Topkill Logic for Eastern Variants
Expansion of VOLUME Keyword for Eastern Variants
Update to BFVOLUME Keyword
Retirement of Legacy Volume Computational Methods
Deprecation of BFVOLEQU and CFVOLEQU Keywords
Updates to MINHARV Keyword

FVS20250930

September 30, 2025

• FIA Volume, Biomass, and Carbon computational methods added
• Read / Track Additional Inputs for FIAVBC from FVS_StandInit / FVS_PlotInit / FVS_TreeInit Tables
• Expansion of STDINFO Keyword for FIAVBC
• Standardization of FVS Tabular Outputs
• Updates to Event Monitor Variables
• Updates to SPMCDBH, DBHDIST, and SUMSTAT Event Monitor Functions
• New Inventory Reference Table
• Modification to FVS_Stats_Stand and FVS_Stats_Species Tables
• Modification to Cubic and Board Foot Volume Topkill Logic for Eastern Variants
• Expansion of VOLUME Keyword for Eastern Variants
• Update to BFVOLUME Keyword
• Retirement of Legacy Volume Computational Methods
• Deprecation of BFVOLEQU and CFVOLEQU Keywords
• Updates to MINHARV Keyword

FVS20250701

July 1, 2025

• Increased Activity Limits
• Greater Precision in Growth Period Input
• Improved Handling of Blank Species Input

FVS20250401

April 1,2025

• Quarter updates include:
• Canopy Cover Updates
• STDIDENT Keyword Database Output
• FIA Species Output in FVS_REGEN_INGROW Table
• Corrected Sampling Weight Reporting when Error is Encountered

FVS20250101 FS2025.1

January 1,2025

Quarter updates include:

• McKelvie NF Location Added to CR Variant
• FVS Species Number Added to FVS_CalibStats Table
• FFE Floating Point Exception Error Issues
• Updates to PICO SDI in Blue Mountains Variant
• Update to Volume Computation Engine

FVS20240930 FS2024.4

September 30, 2024

Updates to this quarterly release include:

• Automatic Generation of Error Table
• Nesting of Addfiles
  20240930FVS_ReleaseNotice.docx

FVS20240701 FS2024.3

July 1, 2024

In this quarterly release there were minor fixes to the base code to address minor bugs and build list directory structure.
20240701FVS_ReleaseNotice.pdf

Forest Vegetation Simulator 20240401 FS2024.2

This update incorporates several Forest Vegetation Simulator quarterly releases. More information can be found in the attached release notices or on our website https://www.fs.usda.gov/fvs/
FVS_2023_Q4_ReleaseNotice.pdf
FVSReleaseNotice-20240401.pdf
2024Q1-FVSReleaseNotice-20231222.pdf

Forest Vegetation Simulator 20230728

Welcome to our July 28, 2023 release!

In this quarterly release, the major updates to base model were:

• Addition of Coleville National Forest to East Cascades (EC) Variant
• Check and Waring of Excess Tree per Acre Input

Please see the attached bulletin for more information or visit our website at https:/www.fs.usda.gov/fvs/
FVS_Q3_ReleaseNotice.docx