Minnesota has 6 "Blue Lakes".....
Blue Lake #1 Near La Crescent MN, along the Mississippi River. SE Minnsota
Blue Lake #2 Between Savage and Shakopee MN , along the Minnesota River. TwinCites
Blue Lake #3 NW of St Francis MN, just south of the Rum River.
Blue Lake #4 NE of Deerwood MN, along Hwy 210.
Blue Lake #5 N of Park Rapids MN, to the east of Potato Lake .
Blue Lake #6 Near Reamer MN.
I think the Blue Lake in the story is the one at Park Rapids MN, there is a really good Brown Trout Stream just south of Park Rapids MN on the Straight River. ~Parnelli
We also have 50 "Round Lakes",11 Stone Lakes and 154 Mud Lakes......