Fuels Out-Year Request and Budget System
Version: 1.1
  • US Forest Service, Fire and Aviation Management

Cataloging Information

  • FORBS - Fuels Out-Year Request and Budget System
  • IIAA - Interagency Initial Attack Assessment
  • NFMAS - National Fire Management Analysis System
  • PCHA99
Record Maintained By:
Record Last Modified: December 13, 2016
FRAMES Record Number: 946


The FORBS Program is based on the National Fire Management Analysis System (NFMAS). It utilizes existing Personal Computer Historical Analysis (PCHA), Interagency Initial Attack Assessment (IIAA), and Arc View processes. FORBS is tied to the Suppression Analysis developed in IIAA and PCHA. The objective is to model fire behavior, with and without treatments, and change over time as fuels decay or accumulate. It is a short-term solution used for programmatic, strategic planning. FORBS describes four different fuels situations. These situations include current untreated; future untreated; current treated; and future treated. Geographic layers utilized in FORBS are coordinated with other applications including PCHA and IIAA. These layers display the Fire Management Zone (FMZ), a basic geographical area for the analysis within a planning unit. It is represented by a single set of fire behavior characteristics, based on fuel, topography, and weather. The Representative Location (RL) is a portion of a FMZ that represents a unique set of data relating to dispatch, preparedness forces, potential Net Value Change (NVC), escaped fire size potential, and a defined fire occurrence rate. The Fire Occurrence Area (FOA) is an area of uniform fire occurrence rate and determines probability of an acre burning. Treatment Area Strategy (TAS) is an area of uniform fuel treatment strategy. Each geographic layer within FORBS is unique and is contained within a broader layer of data. There is no overlapping data between layers. If there is a need to overlap data, a new unit is created within the layer. Combinations of TAS in FORBS create a strategic fuels program.

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