Estuarine Conditions as of October 30,
2007
St. Lucie Estuary
Current Conditions:
No releases occurred at S-80
over the past week. The C-24 canal is discharging about 265 cfs at
S-97. Discharge at S-49 on the C-23 canal is currently about
470 cfs. Weekly average salinities at the four monitoring sites in the St.
Lucie are given below in parts per thousand (ppt).
|
Weekly Average Salinity
(ppt) |
|
|
Sampling Site |
Surface |
Bottom |
Envelope |
|
2.8 |
2.9 |
|
HR1 (N. Fork) |
2.0 |
4.6 |
|
|
5.8 |
7.0 |
8.0 – 25.0 |
A1A Bridge |
16.2 |
23.0 |
20.0 – 31.0 |
There was little change in
average salinity over the past week. Only bottom water at the A1A Bridge
fell within the preferred salinity range. Based on the salinity tolerances of
the oyster, Crassostrea virginica, salinity conditions in the estuary
are poor to fair (see attached).
Caloosahatchee Estuary
Current Conditions:
Discharge at S-79 averaged
135 cfs over the past week. The concentration of chlorides at the Olga
Plant is 82 mg/l. Average salinity in the estuary changed little over the
past week. Data for specific sites are given below in parts per thousand (ppt).
|
Weekly Average Salinity
(ppt) |
|
Sampling Site |
Surface |
Bottom |
|
7.6 |
7.7 |
Rt. 31 Bridge |
7.3 |
8.3 |
I-75 Bridge |
NA |
NA |
|
13.3 |
13.7 |
|
21.4 |
22.6 |
Shell Point |
29.0 |
30.8 |
Salinity conditions
throughout the system are good seaward of
FWRI
reports that offshore
samples collected this week detected Karenia brevis, the
To find this information on the web:
·
click on “Current Week”
·
click on “Technical Summary”
·
scroll to the bottom and click on “Coastal
Ecosystems”