Dividing Creek is a 19.1 miles (30.7 km) tributary of the Pocomoke River

Pocomoke River

The Pocomoke River stretches approximately from southern Delaware through southeastern Maryland in the United States. At its mouth, the river is essentially an arm of Chesapeake Bay, whereas the upper river flows through a series of relatively inaccessible wetlands called the Great Cypress Swamp,...

 on the Delmarva Peninsula

Delmarva Peninsula

The Delmarva Peninsula is a large peninsula on the East Coast of the United States, occupied by most of Delaware and portions of Maryland and Virginia...

. It rises in Wicomico County, Maryland

Wicomico County, Maryland

As of the census of 2010, there were 98,733 people, 37,220 households, and 24,172 families residing in the county. The population density was 261.7 people per square mile . There were 41,192 housing units at an average density of 109.2 per square mile...

, and forms the boundary between Somerset

Somerset County, Maryland

-2010:Whereas according to the 2010 U.S. Census Bureau:*53.5% White*42.3% Black*0.3% Native American*0.7% Asian*0.0% Native Hawaiian or Pacific Islander*1.7% Two or more races*1.5% Other races*3.3% Hispanic or Latino -2000:...

 and Worcester

Worcester County, Maryland

-2010:Whereas according to the 2010 U.S. Census Bureau:*82.0% White*13.6% Black*0.3% Native American*1.1% Asian*0.0% Native Hawaiian or Pacific Islander*1.7% Two or more races*1.3% Other races*3.2% Hispanic or Latino -2000:...

 counties.

The entire watershed

Drainage basin

A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...

 is in the Atlantic coastal plain

Atlantic Coastal Plain

The Atlantic coastal plain has both low elevation and low relief, but it is also a relatively flat landform extending from the New York Bight southward to a Georgia/Florida section of the Eastern Continental Divide, which demarcates the plain from the ACF River Basin in the Gulf Coastal Plain to...

 and quickly reaches sea level

Sea level

Mean sea level is a measure of the average height of the ocean's surface ; used as a standard in reckoning land elevation...

 at the Pocomoke. The original county courthouse

Courthouse

A courthouse is a building that is home to a local court of law and often the regional county government as well, although this is not the case in some larger cities. The term is common in North America. In most other English speaking countries, buildings which house courts of law are simply...

for pre-1742 Somerset County was located not far above the mouth of Dividing Creek, close to its west bank.