After a few tenths of a mile, the creek enters Franklin Township, Luzerne County and flows into Perrins Marsh.

In Perrins Marsh, it reenters Northmoreland Township, Wyoming County and flows north-northeast for a few tenths of amile.

The creek continues flowing east along the border of the census-designated place of West Falls before crossing Pennsylvania Route 92 and reaching its confluence with the Susquehanna River.

[1] Whitelock Creek joins the Susquehanna River 207.28 miles (333.58 km) upriver of its mouth.

[4] The surficial geology further upstream is fairly similar except that there is little Wisconsinan Ice-Contact Stratified Drift or alluvium at the headwaters and that the bedrock consists only of sandstone and shale.

At this point in time, a dam failure could have caused damage to properties and bridges further downstream, as well as possibly killing several people.

[3] A steel stringer/multi-beam or girder bridge carrying State Route 2011/Village Road was built over Whitelock Creek in 1941 and is 27.9 feet (8.5 m) long.

A bridge of the same type was built over the creek in 1945 3 miles (4.8 km) east of Center Moreland.

A concrete slab bridge carrying State Route 2009/Brace Road over Whitelock Creek was constructed in 1961 and is 30.8 feet (9.4 m) long.

In 2007, a concrete box beam or girders bridge carrying Pennsylvania Route 92 over the creek was built.

[9] In 2012, several members of the National Civilian Community Corps cleaned up debris along Whitelock Creek.

The EPT (Ephemeroptera, Plecoptera, and Trichoptera) taxa richness value was 6 and the Becks Index Version 3 value was 8.