They are not all that close maybe a 35 minute drive from the park. Small Mouth and Walleye and Pike in them all. Also Perch and other pan fish.
The Protage and Portage lake have an abundance of area and it is always good fishing. Walleye Smallies and Pike. Been a few weeks since I have been there but try asking at the local bait shops where the action is on the portage.