Characteristics and Prevention of the Debris Flows following Wenchuan Earthquake in Jushui River Basin, An County, China

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td align="left" rowspan="2">
                    Site name</td><td align="center" colspan="2">Flood level (m)</td><td align="center" rowspan="2">
                    Flood peak discharge <br/>(m<sup>3</sup>/s)</td></tr><tr class="thead"><td align="center">Flow</td><td align="center">Flow and channel rise</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td align="left">Sancha watershed outlet</td><td align="center">3.0</td><td align="center">4.5~5.0</td><td align="center">715</td></tr><tr><td align="left">
                    Gaochuan town upper</td><td align="center">2.1</td><td align="center">3.0~3.5</td><td align="center">627</td></tr><tr><td align="left">Gaochun  town</td><td align="center">2.0</td><td align="center">3.0~3.5</td><td align="center">1056</td></tr><tr><td align="left">Gan watershed  outlet</td><td align="center">2.4</td><td align="center">4.0~4.5</td><td align="center">1855</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr><tr class="table-fn"><td><sup><i>※</i></sup>The peak discharge was calculated by the area and the velocity of the surveyed cross-sections, and the velocities were figured out using Manning formula. These data expressed the situation of hazard events on August 18, 2012. <br/></td></tr></table>

Flood level and flood discharge at the typical sites.

Journal of Earthquakes

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Table 4

Table 4: Characteristics and Prevention of the Debris Flows following Wenchuan Earthquake in Jushui River Basin, An County, China 