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 City of Solana Beach
Section 3
Shoreline and Coastal Bluff Management Strategies Draft MEIR
Environmental Impact Analyses
Revetments
Effects of Revetments on Shoreline Erosion and Beaches
There is no evidence that indicates that revetments contribute to shoreline and beach erosion.
Revetments are flexible and cost-effective protective devices, which reduce erosion of the cliff
base and improve the overall stability of the bluffs. Revetments could help reduce the need to
construct seawalls providing there is construction access and there are no site constraints such
as locations where there is no beach.
Short-term Effects
No short-term effects to geology and soils would result from the construction of revetments at
the cliff base. In the short-term, revetments would reduce the need of constructing a more
intrusive and costlier protection device such as a seawall.
Long-term Effects
No-long-term effects to geology and soils would result from the construction of revetments. In
the long-term (100+ years) with or without revetments, the ultimate landward erosion of the
bluffs is inevitable. The rate of landward erosion will depend upon varying factors such as the
beach width, cliff strength, and unpredictability of wave and tide conditions.
Effects of Revetments on Coastal Upper Bluffs
No negative effects on coastal upper bluffs would result from the construction of revetments.
Revetments reduce the affects of wave and tide energy on the existing notches; therefore,
reducing the potential failure of the upper bluffs in the short-term.
Cobble Berms
Effects of Cobble Berms on Shoreline Erosion and Beaches
There is no evidence that indicates that cobble berms contribute to shoreline and beach
erosion. Cobble berms constitute a non-conventional and cost-effective approach to address
the seacliff erosion problem. Cobble berms would reduce the need to construct seawalls,
providing there is construction access and there are no site constraints such as locations where
there is no beach.
Short-term Effects
No short-term effects to geology and soils would result from the construction of cobble berms at
the cliff base. In the short-term, cobble berms would reduce the need of constructing a more
intrusive and costlier protection device such as a seawall.
Project No. 323530000
Page 3-21
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