Dave,

Big Marine Lake is located in northeast Washington County.

There used to be an annual official Hobie regatta on the lake, until Ray Richardson sold his property into the Regional Park. Ray and Ray's neighbor let the regatta operate from their properties. (That regatta then moved to Green Lake, near Spicer.) Those were the days when Hobie sails were all sorts of colors. The lake looked like it was invaded by giant colorful butterflies. -Those are long gone days, now. Oh well...