It's a drive for you, but one place I would point you to is Alamo Reservoir, near Wenden. My Dad's there now, and he says the birds are finally arriving in good numbers. This is one of the few places I've hunted where it's actually better when there are more hunters on the water moving the ducks around, so I don't mind advertising it. The more the merrier! And don't give up too early; the fishermen usually don't hit the water until about 9:00, and when they do they'll often start the birds moving again, leading to some great late-morning shooting.
If you don't have a boat, there are still places around the lake where you can hunt from shore. You don't need a huge spread; the ducks seem to shy from any spreads larger than about a dozen. I often just put out five or six mallards and four or five teal.
Lots of spoonies and green wing teal, but also a decent number of mallards, redheads and gadwall. We'll also get honkers in every once in a while. The best thing about Alamo is that you can camp along the shoreline. I'll be heading back the last four days of the season -- I'll try to post a trip report afterwards.