It was entered into the Geographic Names Information System of the U.S. Geological Survey as identification number 1180503,[2] U.S. Department of the Interior Geological Survey I.D.

[1] Martins Creek is contained wholly with in Falls Township.

It rises just north of Trenton Road in the north portion of the township at an elevation of 100 feet (30 m) and flows southeast while joining with two tributaries, one from the left and one from the right.

Just after it passes under New Falls Road, it joins with another unnamed tributary from the right, at which it makes a left turn then bends right again flowing southeast until it passes under U.S. Route 13 where it meets with Rock Run from the left where Martins turns right flowing almost due south.

Just north of Mill Creek road it connects with the Pennsylvania Canal (Delaware Division) and continues on the other side of the canal, flowing south until it meets at the Delaware River's 122.4 river mile at an elevation of 0 feet (0 m), resulting in an average slope of 19.57 feet per mile (3.706 m/km).