Blackwater River

Blackwater River may refer to:

In Britain:

• River Blackwater, Essex, a river in England
• River Blackwater (River Loddon), a tributary of the River Loddon in England
• River Blackwater (River Test), a river in the English counties of Hampshire and Wiltshire
• Black Water (Conon), in Wester Ross, Scotland

In Canada:

• West Road River (also Blackwater River), a major tributary of the Fraser River

In Ireland:

• Blackwater River (Kerry), a river in County Kerry
• Munster Blackwater, a river which flows through counties Kerry, Cork, and Waterford
• River Blackwater, Ulster, a river in County Armagh and County Tyrone in Northern Ireland, and County Monaghan, Ireland
• River Blackwater, Meath, flowing from Lough Ramor, County Cavan to Navan, County Meath

In New Zealand:

• Blackwater River (New Zealand), a river in the South Island

In the United States:

• Blackwater River (Alabama), a river in Baldwin County
• Blackwater River (Contoocook River), a river located in central New Hampshire
• Blackwater River (Florida), a river arising in southern Alabama and flowing through the Florida Panhandle to the Gulf of Mexico
• Blackwater River (Maine), a river in Aroostook County
• Blackwater River (Maryland), a saltwater river in Dorchester County
  • Little Blackwater River (Maryland), a tributary
• Blackwater River (Massachusetts – New Hampshire), a tidal inlet in northeastern Massachusetts and southeastern New Hampshire
• Blackwater River (Missouri), a tributary of the Lamine River
• Blackwater River (Virginia), a river in southeastern Virginia
• Blackwater River (West Virginia), a river in the Allegheny Mountains (with a tributary named Little Blackwater River)