Prognosis^BC is a growth and yield computer model for simple and complex forest stands. The model forecasts future stand conditions based on the expected growth and mortality of individual trees within a stand. It is best used for projecting an existing stand from a ground-based inventory, but can also initiate and project a stand from bare ground conditions. The model's strengths include its ability to simulate almost any form of harvesting, from clearcutting to partial cutting, and to simulate the impacts of root disease.

Prognosis^BC is an adaptation of the U.S. Forest Service Forest Vegetation Simulator (FVS), originally developed in North Idaho. Prognosis^BC Versions 1.02 (April 1998) and 2.0 (July 2000) are applicable in British Columbia's Nelson and Kamloops forest regions. Version 3.0 (August 2003) is applicable to the Interior Douglas-Fir (IDF) biogeoclimatic ecosystem classification (BEC) zone. Version 3.3 expands that applicability to include the Interior Cedar Hemlock (ICH) zone and makes the system compliant with current BC government software standards.