There are special regulations for black bass, which also includes the smallmouth bass in place for every tributary in Lake Erie’s rivers. No black bass may be removed from the river from the first of May to the last Friday in June, and afterward they are given a minimum length of 14 inches. Anything less than this has to be returned to the water immediately without harm.  
 
The Sandusky and Maumee Rivers have regulations that limit the size of proper hooks to use on fish from March 1 to May 1. They also cannot use any line with more than one hook attached this also means no treble hooks are allowed.

Hooks can be no more than half an inch from the shank to the point, which also applies to hooked lures. The hook regulation as applied to the Sandusky River is in force in the section beginning at the Toledo Edison Power line intersects the river at the southwestern corner of Rodger Young Park, which is in Fremont. This section ends at a line that runs through Sandusky Bay about a quarter-mile east of and parallel to Conrail Railroad Bridge in Sandusky Bay. The exact latitude and longitude coordinates are from N 41 degrees 29 35.4", W 082 degrees 49 18.0" to N 41 degrees 28 02.4", W 082 degrees 47 58.2".
 
There is one part of the Sandusky that is not open to fishing at all when the Walleye fish are making their spring spawning trip from the Toledo Edison power line to the Ballville Dam in Fremont this section cannot be fished in from March 1 to May 1. After this, the same rules apply as to the rest of the river as far as hook size, lures and so forth.

To get the full "Catching Walleye On The Snadusky River" article you'll need to download it here.