You will have to pay for a site. On 23 dollars and you can sleep in your car or a tent., if you are looking for a place to just park your car and sleep for the night there's a few rest areas close by
You can't park overnight at the day use areas, but you can camp at devil's lake campground, which is nice and has restrooms and showers.
Devil lake has campground! Follow the signs! Or go on line! Campground has yurts too
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