They are designated as a "Locally Significant" site in the Montour County Natural Areas Inventory.

Shortly after this, it reaches its confluence with the Susquehanna River near the southern edge of Mahoning Township.

[2] Toby Run joins the Susquehanna River 138.56 miles (222.99 km) upstream of its mouth.

However, the vegetation in the ravines, which includes forests, is described as "interesting and diverse" in the Montour County Natural Areas Inventory.

Non-native species such as Norway maple, multiflora rose, garlic mustard, autumn olive, and tree-of-heaven are slowly become more prevalent in the ravine.

These include alternate-leaved dogwood, red willow, multiflora rose, spicebush, American elderberry, wild hydrangea, autumn olive, and witch hazel Additionally, there are 22 species of herbs in the ravine.

[4] The Toby Run Ravines are designated as a "Locally Significant" site in the Montour County Natural Areas Inventory.