Estuarine Conditions as of September 11,
2007
St. Lucie Estuary
Current Conditions:
No releases occurred at S-80
over the past week. 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 |
|
7.8 |
9.6 |
|
HR1 (N. Fork) |
11.7 |
14.2 |
|
|
16.4 |
17.2 |
8.0 – 25.0 |
A1A Bridge |
25.2 |
28.9 |
20.0 – 31.0 |
Average weekly salinity in
the estuary increased since the last report. Local freshwater inflow
continues to maintain surface salinity at both the
Caloosahatchee Estuary
Current Conditions:
During the past week,
discharge at S-79 averaged 164 cfs. Chloride
concentration at the Olga Plant is presently 77 mg/l. Average
salinity at the monitoring sites in the upper Caloosahatchee Estuary decreased slightly
over the past week. Data for specific sites are given below in parts per
thousand (ppt).
|
Weekly Average Salinity
(ppt) |
|
Sampling Site |
Surface |
Bottom |
|
6.6 |
7.1 |
Rt. 31 Bridge |
NA |
7.7 |
I-75 Bridge |
5.8 |
9.8 |
|
8.0* |
NA |
|
19.6 |
21.0 |
Shell Point |
30.2 |
33.8 |
*
based on two-day average.
Salinity in the upper estuary
remains high for this time of year. The 30-day average surface salinity
at
During the last sampling trip
to the Caloosahatchee at the end of August, a plankton bloom was noted upstream
of S-79. FWRI reports that no 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”