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Internal erosion. 1. 2. 3. Figure 1 A schematic representation of seepage problem under levees (U: hydrostatic uplift pressures, W: submerged weight of soil). A picture of sand boiling (source: USACE, Vicksburg District).
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Figure 1 A schematic representation of seepage problem under levees (U: hydrostatic uplift pressures, W: submerged weight of soil).
A picture of sand boiling (source: USACE, Vicksburg District)