The Yeocomico River is a 1.1 miles (1.8 km) tidal tributary

Tributary

A tributary or affluent is a stream or river that flows into a main stem river or a lake. A tributary does not flow directly into a sea or ocean...

 of the southern portion of the Potomac River

Potomac River

The Potomac River flows into the Chesapeake Bay, located along the mid-Atlantic coast of the United States. The river is approximately long, with a drainage area of about 14,700 square miles...

 in Virginia

Virginia

The Commonwealth of Virginia , is a U.S. state on the Atlantic Coast of the Southern United States. Virginia is nicknamed the "Old Dominion" and sometimes the "Mother of Presidents" after the eight U.S. presidents born there...

's Northern Neck

Northern Neck

The Northern Neck is the northernmost of three peninsulas on the western shore of the Chesapeake Bay in the Commonwealth of Virginia. This peninsula is bounded by the Potomac River on the north and the Rappahannock River on the south. It encompasses the following Virginia counties: Lancaster,...

. The Yeocomico forms the boundary between Westmoreland

Westmoreland County, Virginia

As of the census of 2000, there were 16,718 people, 6,846 households, and 4,689 families residing in the county. The population density was . There were 9,286 housing units at an average density of...

 and Northumberland

Northumberland County, Virginia

Northumberland County is a county located on the Northern Neck in the Commonwealth of Virginia, a state in the United States. In 2010, its population was 12,330. Its county seat is Heathsville...

 counties. Yeocomico is a Native American

Native Americans in the United States

Native Americans in the United States are the indigenous peoples in North America within the boundaries of the present-day continental United States, parts of Alaska, and the island state of Hawaii. They are composed of numerous, distinct tribes, states, and ethnic groups, many of which survive as...

 name roughly translated as "tossed to and fro by the waters."

The Yeocomico River forms at the confluence

Confluence

Confluence, in geography, describes the meeting of two or more bodies of water.Confluence may also refer to:* Confluence , a property of term rewriting systems...

of three rivers: the Northwest Yeocomico, the West Yeocomico, and the South Yeocomico rivers.

Tributaries

• Northwest Yeocomico River
  • Shannon Branch
  • White Point Creek
• West Yeocomico River
  • Kinsale Branch
  • Hampton Hall Branch
  • Long Cove
  • Wilkins Creek
• South Yeocomico River
  • Mill Creek
    • Drum Cove
  • Lodge Creek
    • Dungan Cove
  • Palmer Cove
    • Cornish Creek
• Parkers Creek