Place
- Pacific Grove (Calif.)21
- San Benito County (Calif.)21
- Vineyard Sound (Mass.)21
- Burkina Faso20
- Ethiopia20
- Kings County (Calif.)20
- New Zealand20
- Pakistan20
- Senegal20
- Zambia20
- Côte d'Ivoire19
- Salinas (Calif.)19
- San Luis Obispo County (Calif.)19
- Sierra Nevada (Calif. and Nev.)19
- Tuolumne County (Calif.)19
- Albion River Watershed (Calif.)18
- Algeria18
- Europe18
- India18
- Iran18