When to go to Sakakawea

[JS]

I am planning on heading up to Lake Sakakawea next summer and was wondering when the best time for walleye is between Indian Hills Resort and Deepwater Creek. Did well up there a couple of years ago in August but locals said it was unusually good that late in the year. Timing with work and family says that late June would be OK but only if the fishing will be good. Thanks for your input.

JS