The primary inflow is the
Redstone River at arriving via two channels at the northwest from Pelaw Lake and from Little Redstone Lake. A secondary inflow is Harburn Creek at the northeast. There are two primary outflows that are both controlled by dams and that both lead to the Gull River. The East Redstone River at the southeast leads to Eagle Lake further downstream, and the Redstone River at the southwest leads to Green Lake further downstream. The Gull River flows as part of the
Trent–Severn Waterway via the
Trent River to
Lake Ontario. Since the Gull River system flows to the summit of the waterway at
Balsam Lake, its tributaries including Redstone Lake serve as an important water flow control
reservoir. ==Economy==