River Medway points along the North Downs, the Weald and Ashdown Forest. The major tributaries are: Minor tributaries include: Former minor tributaries include the Old Bourne River, which flowed through the Brook, Chatham (not to be confused with the main tributary River Bourne). The river and its tributaries flow through largely rural areas, Tonbridge, Maidstone and Medway being the exceptions. The Medway itself initially flows in a west-east direction south of the North Downs; at the confluence of the River Beult, however, it turns north and breaks through the North Downs at the Medway Gap, a steep and narrow valley near Rochester,
Zumbro River The South Fork Zumbro River, long, rises about east of Hayfield in southern Dodge County and flows generally eastwardly into Olmsted County, where it turns northward at Rochester and flows into southwestern Wabasha County. The South Fork's course through Rochester has been channelized as part of a flood control project. It is dammed in Wabasha County, by the Lake Zumbro Hydroelectric Generating Plant to form Lake Zumbro. The Middle Fork Zumbro River, long, rises in northeastern Steele County, about west of West Concord and flows generally eastwardly through northern Dodge, southwestern Goodhue and northeastern Olmsted counties, past Pine Island and