10 Last Great Places fall in the top 10% of the rankings for every evaluation factor.
- Size: over 7,500 acres
- # Facets: 20 or more
- # Ecosystems: 20 or more
- Imperiled Species: score 5.9 or higher
- Vegetation condition: under 40% departure
- Human modification: score under .050
- Resilience: score >1400
- GAP mgmt status 1 or 2
10 Last Great Places that excel in all factors – all located in Arizona and Utah.