A small portion of the canyon where it empties into the Spokane River is part of the Lake Roosevelt National Recreation Area.
The canyon opens into the Spokane River at its northern end at 1,350 feet (410 m) elevation, and the top of the canyon at its southern end is at about 2,720 feet (830 m) elevation above sea level.
[2] Most of the homes built in Harker Canyon are cottages or vacation houses used for recreational purposes in the spring, summer, and fall.
Some homes are occupied year-round, and real estate listings promote the canyon's proximity to the town of Davenport.
Mailing addresses on Harker Canyon Road use the Davenport post office.