As far as i know their is a lake area roped off for swimming for people. The rest of lake is open but i have never seen dogs swim there. Either call the park or go let your dog swim as long as there are no signs saying no dog swimming.
Sunrise Lake..First right coming from route 24.
The lake would work as best I know. There are large creeks as well. My dog loves that part.
I don't recall there being a place to go swimming.
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