From the southwestern edge of the reservoir, it flows west-northwest for several tenths of a mile, crossing Interstate 380.

The stream then turns southeast and flows down a steep slope to its confluence with Roaring Brook.

[3] The peak annual discharge of Little Roaring Brook has a 10 percent chance of reaching 750 cubic feet per second.

[3] The highly stony Norwich and Chippewa silt and loams are found along Little Roaring Brook.

[7] The surficial geology in the vicinity of the stream's lower reaches mainly includes urban land heavily disrupted by cut and fill, a glacial or resedimented till known as Wisconsinan Till, and bedrock consisting of sandstone, conglomeratic sandstone, and shale.

Near the headwaters, there is Wisconsinan Till, surface mining land, and a patch of wetland.

[8] Little Roaring Brook flows through eight pipes whose diameters range from 6 to 24 inches (15 to 61 cm).

[2] The watershed is mostly in Dunmore and Throop, but small areas are in Olyphant and Roaring Brook Township.

[12] Little Roaring Brook was entered into the Geographic Names Information System on August 2, 1979.

[5] This name appears on Patton's Philadelphia and Suburbs Street and Road Map, which was published in 1984.

[15] A reservoir on Little Roaring Brook was owned by the Dunmore Water Company in the early 1900s.

[16] A concrete culvert bridge carrying Interstate 84 over Little Roaring Brook was built in 1961 and repaired in 1996.