FIGURE 4
Mean current velocity ranged from 0.49 to 0.89 cm-1 in
the dry season and from 0.41 to 0.85 cm-1 in the rainy
season. Maximum current velocity reached 0.88 ms-1(URU1) in the flood tide and 1.01 ms-1 (URU1) in the
ebb tide.
3.2 Suspended Sediments (SSC) and Suspended Solids
Discharge (Qss)
SSC recorded significantly low value (50-100
mgL-1) in ARA1, low value (100-150
mgL-1) in IGN and extremely high value (>
300 mgL-1) in URU1 and URU2 sections, during the dry
season (Figure 5). SSC recorded extremely low value
(< 50 mgL-1) in ARA1 and IGN, low value
(100-150 mgL-1) in ARA2 and URU1, and extremely high
value (> 300 mg L-1) in URU2, during the rainy season.
Turbidity presented behavior similar to that of SSC,
with extremely high values (> 300 NTU) corresponding to
Secchi depth < 10 cm.
Difference in SSC between the most upstream (ARA1) and
the most downstream (URU2) station was 3.1 times greater in URU2, during
the dry season, as well as 20 times greater in URU2, during the rainy
season.