Baraboo River at Rock Springs (Excerpt from SIR 2008-5235)
The Baraboo River flows south along a 1-mi-long narrow rock gorge that widens at the community of Rock Springs in Sauk County (appendix 2). High-water marks were compared to peak gage height recorded at the NWS flood forecasting site at the bridge crossing in downtown Rock Springs as part of the indirect streamflow estimate. Peak streamflow for the Baraboo River at Rock Springs was estimated to be 12,900 ft3/s (table 4). The modeled inundated area of flooding in Rock Springs (appendixes 2B and 2C) is especially detailed because of the 3-m resolution of the Sauk County DEM data. According to the city engineer, no corrections were necessary to the modeled flood extent. The historic downtown of Rock Springs was almost entirely inundated by the flood. Rock Springs is included in the Long-Term Recovery Plan (Wisconsin Recovery Task Force, 2008).
Photo of State Highway 82, looking east, at downtown La Farge, June 8, 2008. Photo from Village of La Farge.
Appendix 2A. High-Water Mark Table (pdf) (excel) (shapefiles)
Appendix 2B. Flood-Peak Inundation Map (pdf) (shapefiles)
Appendix 2C. Flood-Depth Map (pdf) (grids)
Appendix 2D. Flood-Peak Water-Surface Profile (pdf)
Link to real-time National Weather Service flood prediction site Baraboo River at Rock Springs, Wis