Cabin John Creek is a tributary stream of the Potomac River in Montgomery County, Maryland.

[7] The Union Arch Bridge carries MacArthur Boulevard and the Washington Aqueduct over the stream about 1/4 mile before the creek flows through a culvert under the Chesapeake and Ohio Canal and empties into the Potomac River near Cabin John, Maryland.

[8] Montgomery County Government is implementing a long-term plan to improve water quality throughout the area, including stormwater management and stream restoration projects.

[9] As of 2021 the county has installed restoration projects on the Booze Creek and Buck Branch tributaries.

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