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315 Rivers

Bark river. It rises in Washington county and passing through the north west part of Milwaukee county enters Rock river at Fort Atkinso, six miles above Lake Koshkonong. A part of its course is through some extensive marshes where it[s] [course] is occasionally lost in the tall grass. Its source is on very elevated ground, so that it may be used in supplying the summit level of a canal across the country in this direction.

The Crawfish or West Branch of Rock river rises near the north west corner of Dodge county where it receives the waters of Fox Lake and runs directly south, being confined almost exclusively to one range of townships (range fourteen) "In ascending this branch from its mouth" at Jefferson, says Capt. Cram in his report "the Minimum depth of water for six miles is believed to be not less than four feet in low stages. About one and a half miles above Aztalan there is a rapid of about two and a half [miles] feet fall in

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