St. Lucie Estuary
Current Conditions:
During the last week, an average discharge of 893 cfs occurred at S-80 from C-44 including 784 cfs at
S-308 from the Lake, 236 cfs at S-97 from C-23, and 407 cfs from S-49 from
C-24(discharge values from S-80, S-308, S-97 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 |
|
0.46 (1.07) |
0.56 (1.86) |
|
HR1 (N. Fork) |
2.20
(5.65) |
4.79 (10.10) |
|
|
3.26 (7.14)
|
3.83 (9.10)
|
8.0 – 25.0 |
A1A Bridge |
10.85 (15.16) |
20.18 (21.99) |
20.0 – 31.0 |
Compared with the previous week, average salinity decreased
throughout the estuary. Salinities are close to the lower limit of the
preferred range at A1A Bridge, and below the preferred range at
Caloosahatchee Estuary
Current Conditions:
During the last week, an average discharge of 3300 cfs occurred
at S-79, 1121 cfs at S-78, and 649 cfs at S-77. The concentration of
chlorides at the Olga Plant was 46 ppm yesterday, down from 59 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 |
|
0.24 (0.23) |
0.25 (0.24) |
Rt. 31 Bridge |
0.24 (0.23) |
0.25 (0.24) |
I-75 Bridge |
0.26 (0.25) |
0.27 (0.26) |
|
0.29 (0.25) |
0.30 (0.25) |
|
3.10 (1.00) |
5.71(1.93) |
Shell Point |
16.61 (12.95) |
20.12 (16.92)
|
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. An increase in salinity for about 2-4
ppt occurred in the lower estuary downstream of
FWRI (Fish and Wildlife Research Institute)
reports that low 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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