Ecoregions
| ID | Realm | Major Habitat Type | Ecoregion |
|---|---|---|---|
| 146 | Nearctic | Temperate upland rivers | Central Prairie |
| 147 | Nearctic | Temperate upland rivers | Ozark Highlands |
| 148 | Nearctic | Temperate floodplain rivers and wetlands | Upper Mississippi |
| 149 | Nearctic | Temperate floodplain rivers and wetlands | Lower Mississippi |
| 150 | Nearctic | Temperate upland rivers | Teays - Old Ohio |
| 151 | Nearctic | Temperate upland rivers | Cumberland |
| 152 | Nearctic | Temperate upland rivers | Tennessee |
| 153 | Nearctic | Temperate floodplain rivers and wetlands | Mobile Bay |
| 154 | Nearctic | Temperate coastal rivers | West Florida Gulf |
| 155 | Nearctic | Temperate floodplain rivers and wetlands | Apalachicola |
| 156 | Nearctic | Tropical and subtropical coastal rivers | Florida Peninsula |
| 157 | Nearctic | Temperate coastal rivers | Appalachian Piedmont |
| 158 | Nearctic | Temperate coastal rivers | Chesapeake Bay |
| 159 | Nearctic | Xeric freshwaters and endorheic (closed) basins | Southern California Coastal - Baja California |
| 160 | Nearctic | Xeric freshwaters and endorheic (closed) basins | Sonora |