Estuarine Conditions
as of July 31, 2007
St. Lucie Estuary
Current Conditions:
No releases occurred
at S-80 over the past week. At the Roosevelt Bridge
salinity averaged 13.0 ppt on the surface and 13.8 ppt on the bottom.
Corresponding values further downstream at the A1A Bridge are 20.1 ppt and 25.3
ppt. Salinities at both sites are within the preferred range (8-25 ppt
for the Roosevelt
Bridge and 20-31 ppt for
the A1A Bridge). In the North Fork
at the Harbor Ridge station, salinity averaged 7.9 ppt on the surface and 13.9
ppt on the bottom. In the South Fork, at the Palm City Bridge, corresponding values were 6.8
ppt and 8.8 ppt. Salinity conditions are good (see attached).
Caloosahatchee
Estuary
Current Conditions:
The estimated weekly
average discharge at S-79 was about 370 cfs. Chloride concentration at
the Olga Plant is presently 88 mg/l. Average surface salinity did not
change appreciably in the upper estuary, with surface salinity ranging from 6.3
ppt at S-79 to 13.2 ppt at Ft.
Myers. Bottom salinities
ranged from 6.6 ppt at S-79 to 16.0 ppt at Ft. Myers.
Salinity at Shell Point declined again this week averaging 28.6 ppt on
the surface and 33.4 ppt on the bottom. Salinity remains high in
the upper estuary. In the lower estuary and San Carlos Bay
salinity conditions are good (see attached).
FWRI reports that no
Karenia brevis, the Florida
red tide organism, was detected this week in water samples collected alongshore
between Pinellas and Collier counties. Discolored water due to a bloom of the
non-toxic cyanobacteria, Trichodesmium, remains possible in portions of
Charlotte, Lee (including San
Carlos Bay)
and Collier counties.
To view reports and
graphs on line go to:
https://my.sfwmd.gov/portal/page?_pageid=1314,2554645,1314_19738269:1314_19738234&_dad=portal&_schema=PORTAL
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