Hospital hole is in a freshwater river, it is a salt/brackish water from about 10-135 ft and you'll get some saltwater species that hang out there. I believe you can fish for saltwater species in freshwater with just a saltwater license, but it's a fine line.
You most likely cant fish, theres a kayaking trail going right through it, but if i were you i would take my response with a grain of salt, im not too sure about it.
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