Net Creek begins from the south end of Rib Lake in Best Township.

From the south end of Outlet Bay, Net Creek flows south-southeast into Cassels Lake.

The creek has an approximate elevation of 300 m (980 ft) and has a length of about 15 km (9.3 mi).

[1] Net Creek is part of the Ottawa River drainage basin, a large area covering much of eastern Ontario and western Quebec where water drains into the Ottawa River.

[2][3][4] The dam was originally built around the 1920s by the Temagami Timber Company but was rebuilt in 1974 with the purpose of controlling water levels in Net Lake.