Laserfiche WebLink
<br />6.3A <br />Page 20 <br /> <br />prevent further erosion and more significant damage during high water. <br />The ground should be scarified and backfilled with the same type of <br />material that the levee is made of. The backfill material should <br />generally be placed in 6 inch layers and compacted mechanically or by <br />hand, in order to restore the original shape of the levee. Additionally, <br />since this erosion is typically a reoccurring problem, something should <br />be done to improve the drainage and prevent further erosion in the <br />area. Consideration should be given to installing drainage channels or <br />appropriately sized rock, and areas of the levee that remain exposed <br />should be reseeded and mulched. In extreme cases of channel/bank <br />erosion, a relocation or setback of the levee may be the only <br />economical solution. <br /> <br /> <br />Figure 2 Flood damage. (WA) <br /> <br />B. Slope Stability <br /> <br />13 <br /> <br />April 2008 <br />