HUC Code | Watershed Name | Occurrence | Source |
15010005 | Lake Mead | Current | NatureServe |
15010008 | Upper Virgin | Current | NatureServe |
15010010 | Lower Virgin | Current | NatureServe |
15010012 | Muddy | Historic | NatureServe |
15030101 | Havasu-Mohave Lakes | Historic | NatureServe |
15030104 | Imperial Reservoir | Historic | NatureServe |
15030107 | Lower Colorado | Historic | NatureServe |
15060106 | Lower Salt | Historic | NatureServe |
15070101 | Lower Gila-Painted Rock Reservoir | Historic | NatureServe |
15070201 | Lower Gila | Historic | NatureServe |