This report presents the results of a flood-plain study of approximately 1.9 mi (3.1 km) of the South Branch Shiawassee River in Livingston County. This reach of stream s in a currently unincorporated area about 40 mi (64 km) northwest of Detroit. Although little development has taken place, the potential for development is great due to urban spread from the Detroit Metropolitan area. To implement local flood-plain management plans, areas subject to flooding must be defined. This report is intended to provide that information. The report has been prepared in cooperation with the Livingston County Planning Commission and the Michigan Department of Natural Resources
The reach of river mapped extends from the south boundary of section 3, T.2 N., R.4 E., to the west bund land f Interstate Highway 96. Six maps at a scale of 1:2400 (1 in – 200 ft or 1 cm = 24 m) were prepared; the areas covered by each map are shown on figure 1. The flood-plain maps show the area that would be inundated by a flood that has an average recurrence interval of once in 100 years; for brevity such a flood is termed the “100-year flood”.
