Free camping options near Deep Creek, Spokane, WA.

Anybody got the beta on free camping near deep creek outside of Spokane, WA?

Thanks in advance!

we didn't have much luck with this, tried to pay for camping in the park but it was full up. Ended up at a pull off just outside the park woke up and it turned out to be parking for a disc golf course nobody bothered us but no luck finding proper free camping.