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| | Rock River Watershed |
 | | The Rock River originates in the Horicon Marsh in Dodge County, Wisconsin, and flows in a general southerly direction until it enter Illinois, just south of Beloit. |
 | | The Rock River Watershed covers a total of 1,374,187 acres in Boone, Winnebago, Ogle, Carroll, Whiteside, Lee, Rock Island, Henry, Bureau, and Mercer counties. |
 | | Major streams, rivers and creeks, which comprise the Rock River Watershed, include the Rock River, Pecatonica River, Kilbuck Creek, Leaf River, Kishwaukee River, Kyte River, Green River, Elkhorn Creek, Rock Creek, Pisasaw Creek and the Sugar River. |
| dnr.state.il.us /lands/education/entice/lessons/aquatic/rockriverwatershed_6to8.htm (1187 words) |
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