Stewbomb Creek's watershed covers 88.9 km2 (34.3 sq mi), and is entirely in Mount Edziza Provincial Park.

[8][9] Stewbomb Creek originates on the north side of Yeda Peak of the Spectrum Range.

[10] About 4 km (2.5 mi) after that Stewbomb Creek empties into the Little Iskut River at the eastern boundary of Mount Edziza Provincial Park.

[2][11] According to the 1992 Geological Survey of Canada memoir The Late Cenozoic Mount Edziza Volcanic Complex, British Columbia, Stewbomb Creek was so-named to commemorate the explosion of a pressure cooker full of stew.

The incident happened in a tent while Canadian volcanologist Jack Souther and his team were camping on the creek during field mapping.