Public Sites
| State | County | Name |
|---|---|---|
| Iowa | Clayton | Bixby State Preserve |
| Iowa | Hamilton | Bjorkboda Marsh |
| Iowa | Black Hawk | Black Hawk County |
| Illinois | Rock Island | Black Hawk Forest |
| Iowa | Sac | Black Hawk Lake Wildlife Management Area |
| Iowa | Sac | Black Hawk Marsh |
| Iowa | Black Hawk | Black Hawk Mitigation |
| Iowa | Black Hawk | Black Hawk Park |
| Iowa | Allamakee | Black Hawk Point Wildlife Management Area |
| West Virginia | Pocahontas | Black Mountain |
| Iowa | Des Moines | Blackhawk Bottoms |
| Iowa | Des Moines | Blackhawk Bottoms |
| Iowa | Sac | Blackhawk State Park |
| Iowa | Butler | Blackmun Prairie |
| Iowa | Benton | Blairstown |
| Iowa | Buchanan | Blazing Star Prairie, Buchanan |
| Iowa | Cerro Gordo | Blazing Star Prairie, Cerro Cordo |
| Iowa | Buchanan | Blazing Star Prairie, Rowley |
| Iowa | Lyon | Blood Run Creek @ Apple Ave. near Granite |
| Iowa | Lyon | Blood Run Preserve |
| Iowa | Clayton | Bloody Run County Park - Trout |
| Iowa | Davis | Bloomfield |
| Iowa | Linn | Blue Creek Natural Area |
| Iowa | Warren | Blue Flag Marsh |
| Iowa | Linn | Blue Grass Sod Farm |