Framework / Assessment California Forests and Rangelands: Proposed Indicators Summary A measure of people and houses living in or adjacent to wildland fuels. This is a measure of population potentially at risk, as well as exposure to wildfire from adjacent wildlands. Wildland includes all areas of hazardous fuels, which includes some areas within incorporated cities. Adjacency is defined by distance (using 30 meter cells) at risk of flying burning embers, by vegetation-based fuel type.