Owyhee Reservoir is Oregon's only true backcountry airstrip as there are no roads that can take you here. Located on a penninsula, it makes a great camping location with abundant access to the lake.
Be careful with the runway condition here as it frequently becomes rough with ruts and rocks. If you have time consider tossing some rocks off the runway to keep it usuable for others.
There are tie-down chains near the camping spots, if you can find them in the brush.