Lower South Falls, Plunge waterfall in Silver Falls State Park, Oregon, US.

Lower South Falls is a plunge waterfall in Silver Falls State Park in Oregon that drops over a broad basalt ledge, creating a vertical curtain of water. The cascade maintains its full width throughout all seasons, providing a consistent and substantial flow regardless of the time of year.

The falls lie on South Silver Creek along the Canyon Trail of the Trail of Ten Falls, about a mile north of South Falls in Silver Falls State Park. The park sits at the east end of Salem, in Marion County, Oregon, where the west foothills meet the Mount Hood National Forest and the Middle Santiam Wilderness. The falls are one of four in the park where the trail passes behind the water.

This waterfall serves as a key waypoint along the Trail of Ten Falls, connecting visitors through a series of natural cascades across the park. The site draws people who want to experience multiple falls within a single outing rather than visiting them separately.

The hike starts from the main parking area and covers roughly a half-mile (800 meters) on well-maintained trails within the park. The route is clearly marked and accessible for most visitors, though sturdy shoes are helpful on the sometimes damp paths.

The path leads through a stone tunnel behind the cascade, allowing visitors to stand beneath and within the falls themselves. This interior vantage point shows how the water moves and sounds up close in a way few other locations offer.