Estuarine Conditions as of October 21, 2008
St. Lucie Estuary
Current Conditions:
During the last week, an average discharge of 210 cfs occurred at S-80 from C-44 including 185 cfs at S-308 from the Lake, 188 cfs at S-97 from C-23, and 207 cfs from S-49 from C-24(discharge values from S-97 and S49 are provisional). The current weekly average salinities (in bold) at the four monitoring sites in the St. Lucie are given below in parts per thousand (ppt), along with the previous week’s (in parenthesis).
|
Weekly Average Salinity (ppt) |
|
|
Sampling Site |
Surface |
Bottom |
Envelope |
|
0.77 (0.46) |
0.83 (0.56) |
|
HR1 (N. Fork) |
1.66 (2.20) |
4.30 (4.79) |
|
|
4.41 (3.26) |
5.52 (3.83) |
8.0 – 25.0 |
A1A Bridge |
16.32 (10.85) |
23.90 (20.18) |
20.0 – 31.0 |
Compared with the
previous week, average salinity increased from < 1 ppt in
Caloosahatchee Estuary
Current Conditions:
During the last week, an average discharge of 915 cfs occurred at S-79, 197 cfs at S-78, and 43 cfs at S-77. The concentration of chlorides at the Olga Plant was 53 ppm yesterday, up from 46 ppm at the beginning of this reporting period. 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 |
|
0.26 (0.24) |
0.27 (0.25) |
Rt. 31 Bridge |
0.27 (0.24) |
0.28 (0.25) |
I-75 Bridge |
0.31 (0.26) |
0.36 (0.27) |
|
1.19 (0.29) |
2.93 (0.30) |
|
6.78 (3.10) |
10.03 (5.71) |
Shell Point |
21.36 (16.61) |
22.48 (20.12) |
In the estuary,
freshwater conditions extend from S-79 downstream to
Compared with the
previous week, average salinity remained about the same in the upper estuary to
I-75. An increase in salinity of 1-2.5 ppt occurred at
FWRI (Fish and
Wildlife Research Institute) reports that background
concentrations of Karenia brevis, the
click on “Current Week”
click on “Technical Summary”
scroll to the bottom and click on “Coastal Ecosystems
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