Place
- Albion River Watershed (Calif.)18
- Algeria18
- Europe18
- Iran18
- Kirkland Lake, Canada18
- Mali18
- Mozambique18
- Napa (Calif.)18
- Pajaro (Calif.)18
- Romania18
- Serbia18
- Togo18
- Bangladesh17
- Eureka (Calif.)17
- Los Angeles County (Calif.)17
- Modoc County (Calif.)17
- Northeastern States17
- Orange County (Calif.)17
- Bridgeview, Illinois16
- Carmel (Calif.)16