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 Case II: Resistant Seacliff,
Sediment Deficiency and Sea Level Rise, Wall at Base of Cliff.
Initial Shore Profile
Shore Profile after Shoreline Retreat
Shoreline migrates landward and beach narrows
because seacliff limits beach retreat (L1 <L0).
Shore Profile after Shoreline
Retreat with Seawall
Seawall has approximately the same effect on the
beach as would the seacliff (L1 <L0). If the wall is
more resistant than the seacliff, the seawall could
become a small headland over time. If the shoreline
is stable or advancing, the wall has little effect.
SOURCE: Adapted from Tait and Griggs, 1991
F I G U R E
Long-term Effects of a Seawall
3.1.6
on a Retreating Shore
Environmental/Solana Beach Bluff Ord EIR/Long Term Effects.FH8
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