Campbell Lake is a nearly 100-acre pristine coastal dune lake located within Topsail Hill Preserve State Park in Santa Rosa Beach, Florida. As one of only a few coastal dune lakes in the world, it offers a unique paddling environment surrounded by ancient coastal dunes and maritime forest.

The lake can only be accessed through Topsail Hill Preserve State Park, and personal watercraft are not permitted due to concerns about introducing invasive species. Kayaks, canoes, and stand-up paddleboards are available for rent at the park store daily between 8 a.m. and 5 p.m., with paddles and life vests included. Rentals are mandatory - no private vessels are allowed.

Wildlife viewing opportunities are abundant, with paddlers likely to encounter shorebirds, osprey, eagles, and various other native species. The lake's shoreline features bald cypress trees, fragrant water lilies, and spatterdock. During lower water levels, unique plant species like Panhandle meadow beauty can be spotted along the sandy shores. The lake also supports floating hearts that create flashing green patterns on the water's surface.

The park offers guided paddling tours, including sunset paddles, and features a self-guided tour with approximately 10 interpretive signs highlighting native plants and wildlife. Rangers customize tours based on visitors' interests. Access to the lake requires paying the park entrance fee ($6 per vehicle).

The lake's water can appear dark at times due to natural tannins from surrounding vegetation, creating what locals call "pine straw tea," though the water itself remains naturally clear. As a coastal dune lake, it experiences periodic connections to the Gulf of Mexico through outfalls, creating a dynamic brackish ecosystem that supports both freshwater and saltwater species.