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326 Its Branches

The branches of Rock river in Wisconsin are, Doty's river in Fond du Lac County, Ossin, and Rubien in Dodge County; Oconomowoc, Crawfish, Bark river, Johnson's Creek and Koshkonong creek in Jefferson County; and the Catfish and Turtle Creek in Rock county. The Pekatonica is a considerable branch that enters five and a half miles between the state line.

Steamboats have ascended this river as far as Beloit; and in 1841 a small steamboat was built at Aztalan and sent down the river: but until improved its value for navigation will be principally confined to floating lumber, &c down the stream.

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