Lake Mason Mason Lake is an 855 acre fishing lake that is shared with the Township of New Haven in Adams County and Douglas Township in Marquette County, Wisconsin. Mason Lake is one of Adams Cty larger fishing lakes with an overall depth being only 8 ft. and a max depth of 9 ft. deep. The lake does offer quality fishing for Northern Pike, Large Mouth Bass and a wide variety of panfish. Big Spring Creek helps fill Mason Lake, and is a trout stream. [...]

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