The Steel River Provincial Park consists of a wide corridor along each side of the Steel Lake and River system north of Santoy Lake, including Diablo Lake on the south. It also includes the Little Steel River up to Grehan Lake in the north. It was established in 1989 to protect the cultural and natural features of the river, while also providing backcountry recreational opportunities.
Significant features of the park include long narrow lakes, rugged cliffs, ravines, swamps, ponds, oxbow lakes, and a waterfall.