The spring tidal ranges at Hon Ba and Vung Tau
are 0.4–3.5 m and 0.3–3.5 m respectively. In this study the tidal
range chosen is 0.4–3.5m. From this range, MSL is found to be
1.95 m. Since there is no available information about the slope
of mangrove forest at Mekong Delta, the slope was estimated as
follows. Mangroves are only found between MSL and MHW,
which means from 1.95 m to 3.5 m above ordnance datum.
Observations from Google Earth show that the mangrove
width at Soc Trang coast is in the order of approximately 1500
m. Therefore the slope of the mangrove forest at Soc Trang is
estimated to be about 1/1000.