Yes you can camp there. It is a state park. Reserve your spot online ahead of timeTo tent camp I think is $30 a night. Check it out online
You can stay there for 10 days and it cost around. 30 a night
The costs are depending on if you need full hook ups (RV), Tent, or cabin rental. Also it will depend on the spot aswell. Some are premium and some or budget spots. I've tent camped there several times. It's a great place if you want to stay more local.
Allso if you have a handy cap plactor saying you are handy cap you get if free, also if you won't to say the night there 1/2 price that goes all state parks in Washington.
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