carbon content (5.74%), whereas region 2 had the highest mean water content
(21.86%). A detailed analysis of the sediment particle size distribution for the four
regions is also shown in Fig. 3. The sediment in region 3 had a higher mean percentage
of coarse sand (68.2% of particles >500 mm) than the other three regions (39.1–51.1%
of particles >500 mm). Table II lists the results of ANOVA and Tukey multiple comparison
test on these parameters. Significant differences ( p