Many plans fail to make the distinction between extent and impact and require revision. This is because describing the extent of a hazard is NOT the same as describing potential impacts on a community.

Extent defines the characteristics of the hazard regardless of the people and property it affects.

• Includes the potential magnitude/severity of a hazard
• Think of the Enhanced Fujita Scale or the Richter Scale

In other words, try to imagine how bad the hazard itself can get.

Impact means the consequence or effect of the hazard on the Tribal government and its assets. Assets are determined by the Tribal government and may include, for example, people, structures, facilities, systems, populations or other community assets, as defined by the Tribe, that are susceptible to damage and loss from hazard events. Assets may also include cultural sites and capabilities and/or activities that have value to the Tribal government. Impacts could be described by referencing historical disaster impacts and/or an estimate of potential future losses.

• Injuries and deaths
• Percent of property damaged