They run about 4 at night. The most noise comes from the tugs pushing the barges. If they are going up river, you cant ignore them at all
Maybe on the hour during the day. I don't recall hearing any at night but the must run. The track is all that close to the park.
Train are regular durning day, don't recall hearing/seeing anything at night, but we were there July/August 2017, had to use air day & night.
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