Located at Spillway Bay on Victoria Valley Road in Dee, a rural locality in Tasmania's Central Highlands, the Dee Lagoon Boat Ramp is a single-lane concrete ramp with a timber landing stage owned by Hydro Tasmania.

A white navigation light onshore aids boater orientation. The ramp is usable by all vehicle types, though a 4WD is recommended given the area's terrain. Parking and facilities are minimal.

Past maintenance work funded by Marine and Safety Tasmania included removal of submerged logs, installation of foot wire on the timber landing, and expansion of the parking and turning area.

The ramp is a popular access point for anglers targeting rainbow and brown trout in the lagoon, which is also well suited to kayak and canoe fishing.