Yes the park does close if there has been too much rain. I called Sunday after it had rained most of the week to see if it was open and they had closed it down. Personally I dont like to go when its too muddy because it also causes the trails to become eroded by foot traffic over time.
Not that i know of but it is muddy out there and take some slip resistance shoes. It will be slippery and muddy.... they only close at dusk(sunset) and closed Monday's
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