Yes. April is generally when the water is turned on and late October is when they usually turn off the water off for the winter. There is dry camping until the snow covers the camp ground loop roads. Main park roads are plowed all winter. The bathroom at the top of the ramp is heated and open all year. You can dry camp in the marina parking lot in the winter.
I am not sure, they did have one loop open pretty late and maybe, you'll have to call them
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