KARE-TV, Minneapolis-St. Paul, Minn. TREMPEALEAU, Wis. — Residents along the Mississippi River would rather do without this rite of summer, the annual mayfly hatch that fills the air with insects and ...
WINONA, Minn. — The Mississippi River is a bit darker at night in the River Valley region currently. Mayfly hatching season has begun, and the Minnesota Department of Transportation recently turned ...
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