There are 31 counties within three mutual aid regions within the Inland Administration Region. Within the regions there are 123 incorporated cities that range in population from a few hundred to over one million. The total population of all cities and counties in the Inland region is 7,181,643. (Population figures: CA. Department of Finance 2010).
The Inland Region consists of primarily rural jurisdictions with a few large metropolitan cities. The geography for the Inland Region is vast and varied with terrain consisting of valley floor agricultural centers, grasslands, watershed areas, high desert regions, foothill regions and into the maintain range areas.
Along with such diverse terrain, each area presents with its own unique set of challenges and threats that affect California. Those vulnerabilities include:
- River and flash flooding
- Dam and levee failures
- Avalanche hazards
- Chemical hazards