Catoctin Creek is a tributary of the Potomac River in Frederick County, Maryland, USA. Its source is formed in the Myersville, Maryland area and flows directly south for the entire length of the stream. Catoctin Creek enters the Potomac River east of Brunswick. The stream flows through Catoctin Creek Park. See also List of rivers of Maryland References External links Monocacy & Catoctin Watershed Alliance Catoctin Creek Park Rivers of Frederick County, Maryland Rivers of Maryland Tributaries of the Potomac River