walleye start to spawn upstream on the maumee a few days after the water temp hits 40*F...... as soon as the ice breaks completely!!! generally mid march but sometimes earlier in the month depending on how the season starts to warm!!!! Small males (jacks) are the first ones to swim upstream so when you catch the first jack, you know its time to get up early the next morning and fish all day till the sun goes down!!!!! When the water level is high, fish downstream. Later in the spring when the water tends to be lower, head upstream!!!! Take this advice from me, Ive been fishing the Maumee since I was five years old!!!!
A few weeks after the jacks start up river the females follow.... If you catch a pregnant female (large belly) THROW IT BACK!!!!!! They are no good to eat, TRUST ME!!!!!! Besides that fact, this insures future generations of fish!!!!!
By mid May its pretty much over for the walleye run up the Maumee... After this time, towards mid to late may the white bass start to bite!!!!! (much easier to catch) More on the white bass later, but this is about the glass eyes!!!!! Although its pretty much over for the walleyes by now, I have been known to catch one every once in a great while, but very far in between!!!! I can recal catching a fairly decent sized walleye all the way in late june!!!!!
Anyway, best wishes to all who expect to catch some glass eyes!!! Hope my advice helps!!! May the bites be pleasant!!! 
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