Hagerstown Valley is located in

Maryland Maryland ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic region of the United States. It borders the states of Virginia to its south, West Virginia to its west, Pennsylvania to its north, and Delaware to its east ...

in the

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

. It is part of the

Great Appalachian Valley The Great Appalachian Valley, also called The Great Valley or Great Valley Region, is one of the major landform features of eastern North America. It is a gigantic trough, including a chain of valley lowlands, and the central feature of the Appal ...

, which continues northward as

Cumberland Valley The Cumberland Valley is a northern constituent valley of the Great Appalachian Valley, within the Atlantic Seaboard watershed in Pennsylvania and Maryland. The Appalachian Trail crosses through the valley. Geography The valley is bound t ...

Pennsylvania Pennsylvania, officially the Commonwealth of Pennsylvania, is a U.S. state, state spanning the Mid-Atlantic (United States), Mid-Atlantic, Northeastern United States, Northeastern, Appalachian, and Great Lakes region, Great Lakes regions o ...

, and southward as

Shenandoah Valley The Shenandoah Valley () is a geographic valley and cultural region of western Virginia and the eastern panhandle of West Virginia in the United States. The Valley is bounded to the east by the Blue Ridge Mountains, to the west by the east ...

West Virginia West Virginia is a mountainous U.S. state, state in the Southern United States, Southern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States.The United States Census Bureau, Census Bureau and the Association of American ...

and

Virginia Virginia, officially the Commonwealth of Virginia, is a U.S. state, state in the Southeastern United States, Southeastern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States between the East Coast of the United States ...

. Hagerstown Valley is bounded on the east by South Mountain, part of the

Blue Ridge Mountains The Blue Ridge Mountains are a Physiographic regions of the United States, physiographic province of the larger Appalachian Highlands range. The mountain range is located in the Eastern United States and extends 550 miles southwest from southern ...

. On the west the valley is bounded by the

Bear Pond Mountains The Bear Pond Mountains are a subrange in the Appalachian Mountains, that straddle Pennsylvania and Maryland in the United States. These mountains are a part of the Ridge and Valley Appalachians and reach their highest point at Cross Mountain ...

— a range of mountains linking Blue Mountain and North Mountain. The valley is bounded on the south by the

Potomac River The Potomac River () is in the Mid-Atlantic (United States), Mid-Atlantic region of the United States and flows from the Potomac Highlands in West Virginia to Chesapeake Bay in Maryland. It is long,U.S. Geological Survey. National Hydrography D ...

and on the north by the

drainage divide A drainage divide, water divide, ridgeline, watershed, water parting or height of land is elevated terrain that separates neighboring drainage basins. On rugged land, the divide lies along topographical ridges, and may be in the form of a single ...

between

Conococheague Creek Conococheague Creek, a tributary of the Potomac River, is a free-flowing stream that originates in Pennsylvania and empties into the Potomac River near Williamsport, Maryland, Williamsport, Maryland. It is in length,U.S. Geological Survey. Natio ...

, which flows south to the Potomac River, and Conodoguinet Creek, which flows northeast to the

Susquehanna River The Susquehanna River ( ; Unami language, Lenape: ) is a major river located in the Mid-Atlantic (United States), Mid-Atlantic region of the United States, crossing three lower Northeastern United States, Northeast states (New York, Pennsylvani ...

. Sometimes the boundary between Hagerstown Valley and Cumberland Valley is defined politically, as the state line between Maryland and Pennsylvania. The political definition restricts Hagerstown Valley to

Washington County, Maryland Washington County is a County (United States), county located in the U.S. state of Maryland. The population was 154,705 as of the 2020 United States census, 2020 census. Its county seat and largest city is Hagerstown, Maryland, Hagerstown. The ...

, while the larger definition includes part of

Franklin County, Pennsylvania Franklin County is a County (United States), county in the Commonwealth (U.S. state), Commonwealth of Pennsylvania. As of the 2020 United States census, 2020 census, the population was 155,932. Its county seat is Chambersburg, Pennsylvania, Cha ...

as well. Sometimes Cumberland Valley is defined so as to include Hagerstown Valley entirely, extending south all the way to the Potomac River.

Antietam Creek Antietam Creek () is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed August 15, 2011 tributary of the Potomac River located in south central Pennsylvania and western Maryland in the ...

flows through Hagerstown Valley to the Potomac River.

Antietam National Battlefield Antietam National Battlefield is a National Park Service-protected area along Antietam Creek in Sharpsburg, Washington County, northwestern Maryland. It commemorates the American Civil War Battle of Antietam that occurred on September 17, 186 ...

is also in the valley, where the

Battle of Antietam The Battle of Antietam ( ), also called the Battle of Sharpsburg, particularly in the Southern United States, took place during the American Civil War on September 17, 1862, between Confederate General Robert E. Lee's Army of Northern Virgi ...

was fought during the

American Civil War The American Civil War (April 12, 1861May 26, 1865; also known by Names of the American Civil War, other names) was a civil war in the United States between the Union (American Civil War), Union ("the North") and the Confederate States of A ...

. The main cities are

Hagerstown, Maryland Hagerstown is a city in Washington County, Maryland, United States, and its county seat. The population was 43,527 at the 2020 United States census, 2020 census. Hagerstown ranks as Maryland's List of municipalities in Maryland, sixth-most popu ...

and Waynesboro, Pennsylvania. The water divide between Hagerstown and Cumberland valleys occurs near the city of

Chambersburg, Pennsylvania Chambersburg is a borough in and the county seat of Franklin County, Pennsylvania, Franklin County, in the South Central Pennsylvania, South Central region of Pennsylvania, United States. It is in the Cumberland Valley, which is part of the Gre ...

References

Columbia Gazetteer of North America
Hagerstown Valley {{coord, 39, 26, 23, N, 77, 45, 17, W, region:US-MD_type:city, display=title Valleys of Maryland Valleys of Pennsylvania Landforms of Washington County, Maryland Hagerstown, Maryland Landforms of Franklin County, Pennsylvania