31' - the Puyallup will cause major flooding along the lower reaches of the river from Sumner downstream to the mouth. Swift waters will overtop levees and flood much of the Puyallup Valley. Erosion with the overtopping is likely to damage levees. The Sumner sewage treatment plant may be flooded. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Puyallup River Basin.<br><br>30' - the Puyallup will flood the lower reaches of the river from Sumner downstream to the mouth...overtopping and possibly damaging some levees.<br><br>26.2' - the Puyallup River will flood low-lying and flood prone areas along the river from just downstream and west of the Meridian bridge in Puyallup...upstream to the east end of Sumner.<br><br>