Piscataway Creek is an 18.6-mile-long (29.9 km)[1] tributary of the Potomac River in Prince George's County, Maryland.

Tinkers Creek is a tributary to Piscataway Creek, converging from the north 4.5 miles (7.2 km) upstream of the mouth of the Piscataway.

[2] The Fort Washington Light was built to provide guidance for mariners entering Piscataway Creek from the Potomac River.

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