The levee elevation along the urban margin is also
lower, with 70% of profiles below 11 m, whereas 44% of profiles on
the west margin are below 11 m. The comparison of geometric
parameters with levee design criteria shows that 99% of profiles in
the urban margin failed to meet the USACE minimum crown width
criteria. The levees on the west margin are 62% below the minimum
width. In terms of the waterside slopes, about half levees on the
west and the east margins are below the minimum criteria, whereas
on the landside 81% and 98% do not meet the minimum on the east
(urban) and west margins respectively. Finally, 42% of profiles on
the east (urban) margin do not meet three out of four minimum geometric
criteria and 48% failed on two of them, whereas on the west
margin (farm land), 33% failed on three out of four and 43% on two
of the four criteria.