In the upper and middle reaches of Bee Sellers Hollow, the surficial geology consists of colluvium and alluvium along the valley floor. Alluvium contains stratified sand, silt, and gravel, along with some boulders. Colluvium contains clasts made of shale and sandstone. There are also a few patches of Illinoian Till and one patch Illinoian Lag in the watershed. However, most of the surficial geology in the vicinity of the stream consists of bedrock consisting of sandstone and shale.
