Wolffs Run is a tributary of Stony Creek in Luzerne County, Pennsylvania.

It flows northeast for several hundred feet before gradually beginning to turn north.

The reservoir has a capacity of 144 million US gallons (550 Ml) and a surface area of 35.0 acres (14.2 ha).

[9] Wolffs Run was added to the Geographic Names Information System on January 1, 1990.

In 1988, the city administration of Hazleton applied for a $750,000 grant to repair the Humboldt Reservoir on Wolffs Run.