Bl
- Black River - Alaska
- Black River - Arizona
- Black River - Arkansas, Missouri
- Black River - seven different ones in Michigan
- Black River - New Jersey
- Black River - New York
- Black River - North Carolina
- Black River - Ohio
- Black River - South Carolina
- Black River - northern Vermont
- Black River - southern Vermont
- Black River - Washington (Chehalis River tributary)
- Black River - Washington (Duwamish River tributary)
- Black River - Wisconsin (tributary of Lake Michigan)
- Black River - Wisconsin (tributary of Mississippi River)
- Black River - Wisconsin (tributary of Nemadji River)
- Black River - Wisconsin, Michigan
- Black Butte River - California
- Black Fork of the Cheat River - West Virginia
- Black Fork Mohican River - Ohio
- Black Lake Bayou - Louisiana
- Black Mallard River - Michigan
- Black Warrior River - Alabama
- Blackbird Creek - Delaware
- Blackfoot River - Idaho
- Blackfoot River - Montana
- Blacklick Creek - Ohio
- Blacklick Creek - Pennsylvania
- Blacks Fork of the Green River - Wyoming, Utah
- Blackstone River - Massachusetts, Rhode Island
- Blackwater River - Alabama
- Blackwater River - Florida
- Blackwater River - Maryland
- Blackwater River - Massachusetts, New Hampshire
- Blackwater River - Missouri
- Blackwater River - New Hampshire
- Blackwater River - Virginia
- Blackwater River - West Virginia
- Blanchard River - Ohio
- Blanco River - Texas
- Blood River - Tennessee, Kentucky
- Blue River - Arizona
- Blue River - Colorado
- Blue River - Kansas, Missouri
- Blue River - Oklahoma
- Blue River - Oregon
- Blue River - Wisconsin
- Blue Earth River - Minnesota
- Blueberry River - Minnesota
- Bluestone River - Virginia, West Virginia
Read more about this topic: List Of Rivers Of The United States: B