Estuarine Conditions as of September 18,
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 |
|
8.7 |
10.1 |
|
HR1 (N. Fork) |
9.4 |
13.1 |
|
|
14.9 |
15.2 |
8.0 – 25.0 |
A1A Bridge |
21.9 |
26.4 |
20.0 – 31.0 |
Salinity at the
Caloosahatchee Estuary
Current Conditions:
During the past week,
discharge at S-79 averaged 187 cfs. Chloride concentration at the Olga
Plant is presently 77 mg/l. Average salinity at the monitoring
sites in the lower 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 |
|
6.4 |
6.5 |
Rt. 31 Bridge |
NA |
7.1 |
I-75 Bridge |
6.2 |
9.4 |
|
13.0* |
NA |
|
18.0 |
18.5 |
Shell Point |
28.5 |
33.3 |
*
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 a field trip on Sept.
12, dispersed blue green algae were observed upstream of S-79. None were
noted in the downstream estuary. 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”