Estuarine Conditions as of Sept 15, 2008
St. Lucie Estuary
Current Conditions:
During the last
week, an average discharge of 1107 cfs occurred at S-80 from C-44 (including
789 cfs at S308 from the
|
Weekly Average Salinity (ppt) |
|
|
Sampling Site |
Surface |
Bottom |
Envelope |
|
0.26 (0.22) |
0.26 (0.22) |
|
HR1 (N. Fork) |
0.36 (0.29) |
0.49 (0.47) |
|
|
0.93 (0.92) |
1.21 (1.66) |
8.0 – 25.0 |
A1A Bridge |
6.55 (6.48) |
18.29 (16.66) |
20.0 – 31.0 |
Compared with salinities of the previous week, average salinity in the estuary increased only slightly in the estuary (<1 ppt for most locations) except for the bottom salinity at Roosevelt Bridge A1A which decreased by 0.5 ppt. All four monitoring stations are reporting salinities below the preferred range. Salinity conditions in the estuary are considered to be poor based on the salinity preference of the oyster, Crassostrea virginica, and location in the estuary (see attached).
Caloosahatchee Estuary
Current Conditions:
An average weekly
discharge of 3016 cfs occurred at S-79 including 1166 cfs at S-77 from the
The current weekly average salinities (in bold) at the six monitoring sites in the Caloosahatchee Estuary are given below in parts per thousand (ppt), along with the previous week’s (in parenthesis).
|
Weekly Average Salinity (ppt) |
|
Sampling Site |
Surface |
Bottom |
|
0.22 (0.21) |
0.22 (0.22) |
Rt. 31 Bridge |
0.22 (0.21) |
NR (NR) |
I-75 Bridge |
0.25 (0.24) |
0.23 (0.22) |
|
0.41 (0.23) |
0.43 (0.23) |
|
2.63 (1.15) |
7.00 (1.60) |
Shell Point |
17.92 (11.16) |
22.24 (16.62) |
In the estuary,
freshwater conditions extend from S-79 downstream close to
Salinity at
No Karenia brevis,
the
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