Question: What is the mouth of watercourse for the body of water where Bartram's Covered Bridge is located?

Knowledge 1: Bartram's Covered Bridge
Bartram's Covered Bridge, a historic covered bridge built in 1860, uses a Burr Truss design and carried Goshen Road over Crum Creek on the border between Delaware County and Chester County, Pennsylvania. It is long and wide and is the only covered bridge remaining of the 30 which once stood in Delaware County. The bridge has slanted planks at each entrance and is the only covered bridge in Pennsylvania with this feature. According to an on-site marker from the Newtown Square Historical Preservation Society, the bridge was built to be "hi and wide as a load of hay" It was built by Ferdinand Wood and named for Mordecai Bartram. [SEP] Knowledge 2: Crum Creek
Crum Creek (from the Dutch, meaning "crooked creek") is a creek in Delaware County and Chester County, Pennsylvania, flowing approximately , generally in a southward direction and draining into the Delaware River in Eddystone, Pennsylvania. It begins in a swamp (formerly a lake, dammed out) near Newtown Square, Pennsylvania along which several mills were established in the 19th century. Right afterward it crosses under Pennsylvania Route 29 and winds one and a half miles () downstream until it hits the hamlet of Crum Creek. It later flows into the Delaware River near Philadelphia.
Knowledge 1: Crum Creek
Crum Creek (from the Dutch, meaning "crooked creek") is a creek in Delaware County and Chester County, Pennsylvania, flowing approximately , generally in a southward direction and draining into the Delaware River in Eddystone, Pennsylvania. It begins in a swamp (formerly a lake, dammed out) near Newtown Square, Pennsylvania along which several mills were established in the 19th century. Right afterward it crosses under Pennsylvania Route 29 and winds one and a half miles () downstream until it hits the hamlet of Crum Creek. It later flows into the Delaware River near Philadelphia. [SEP] Knowledge 2: Kintersburg Covered Bridge
The Kintersburg Covered Bridge is a covered bridge spanning Crooked Creek in Rayne Township, Indiana County, Pennsylvania, United States. Built in 1877, it is one of four covered bridges in the county, and is the only one with a Howe truss design. It is . The Howe design is rather rare in covered bridges. The Kintersburg Bridge is one of only five in the state of Pennsylvania with that design. The other four are the McConnell's Mill Covered Bridge in Lawrence County, Mean's Ford Covered Bridge in Bucks County, St. Mary's Covered Bridge in Huntingdon County, and the Thomas Mill Covered Bridge in Philadelphia County.
Knowledge 1: Bartram's Covered Bridge
Bartram's Covered Bridge, a historic covered bridge built in 1860, uses a Burr Truss design and carried Goshen Road over Crum Creek on the border between Delaware County and Chester County, Pennsylvania. It is long and wide and is the only covered bridge remaining of the 30 which once stood in Delaware County. The bridge has slanted planks at each entrance and is the only covered bridge in Pennsylvania with this feature. According to an on-site marker from the Newtown Square Historical Preservation Society, the bridge was built to be "hi and wide as a load of hay" It was built by Ferdinand Wood and named for Mordecai Bartram. [SEP] Knowledge 2: List of crossings of the Kiskiminetas River
This is a complete list of bridges and dams that span the Kiskiminetas River from its confluence at the Conemaugh River and Loyalhanna Creek to its mouth at the Allegheny River.

Answer: Delaware River