ABAG Projections 2007: Modeling System

The final step in ABAG's modeling system is to allocate jobs and housing to 1,405 census tracts in the region. This is accomplished through the Subarea Allocation Model, or SAM. Employment is distributed to census tracts according to a weighted combination of a tract's share of employment potential and its previous share of its zone's employment. Employment potential is indicated by the amount of land available for development as determined in the ABAG's land use database. Similarly, population (measured by occupied housing units) is allocated according to the weighted census tract share of residential unit potentials and the base year number of units.

<< Zone Level Allocation