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8/21/2024
WT Staff
 August 21, 2024 updated 450 pm EDT
One inch to go, Satilla, St.Mary's Rivers flooding nearly over
Flood update from the network of streamflow monitors of the USGS Georgia Water Science Center
Nineteen streamflow monitors record flooding in the USA Wednesday afternoon, down from twenty-three last night. Georgia has two monitoring stations observing active flood conditions with barely an inch to go, almost back in the channel in Clinch and Atkinson Counties.
Satilla River is down to an inch above flood stage, still receding in Atkinson County, provisional data from the USGS sending the idea this flood could be over shortly. St Mary's River is looking about the same at Ferry Landing near Folkston, the flooding here is imminently over. Suwannee River stopped leaking around 530 this morning at US 441 near Fargo. The NWS has no hazardous weather alerts for the week, it looks like recovery is coming for the south still cleaning up the aftermath of Tropical Storm Debby.
As the flooded areas dry out, private wells can be sanitized, see this advice from Georgia Coastal Health on how to get your private well disinfected here.
WT HAB Tracker from the satellite monitoring program of the NOAA National Centers for Coastal Ocean Science(NCCOS) and State sources where available
New York
The latest image of Lake Champlain was captured yesterday, Aug 20, another day of heavy cloud conditions. A previous image caught Aug 18 showed a slice of the northeast Baie Missisquoi HAB between clouds, concentration down to 600 thousand cells per 100 ml. The last clear image was acquired August 14, this same bluegreen bloom on that date at concentration 1 to 3 million cells per 100 ml. See our NY HAB report for more details here.
From NYS Department of Environmental Conservation: One hundred and thirty-seven active HABs midweek, up from 126 yesterday including the first bluegreen reports of the season for Lake Carmel and Sagaponack Lake. See the impacted water bodies list here, updates are in progress as new reports are confirmed.
Lake Erie west basin
Algal toxin advisories remain for two Lake Erie State Park beaches today, Maumee Bay State Park second such advisory of the season posted a month to the day after the first advisory. The HAB in this location has been parked and cooking up a high concentration, as detected by the NCCOS.
The latest satellite image of Lake Erie West basin was captured August 20 at wind speed, 8.8 mph. The image is partially cloud obscured, showing enough of the bloom to catch the extent and concentration in key areas. Maumee Bay State Park continues to host a high concentration HAB from the shoreline to several nm into open water, 1 million to 2 million cells per 100 ml. Toledo, North Maumee Bay also 1 to 2 million cells, Metzer Marsh Wildlife Area, Catawba Island east side experiencing the higher concentration of the widespread HAB also. HAB concentration around the islands, including South Bass, Middle Bass and Kelleys bluegreen is less than 300 thousand cells per 100 ml. Sandusky Bay HAB appears broken up dispersed east and west of OH-269 at around 700 thousand cells per 100 ml. See the NCCOS images here.
Louisiana: The latest upload from the NCCOS is dated August 20, taken at wind speed 8.3 mph is a clear capture showing a clear Lake Pontchartrain and a very high concentration spreading through Bayou Fortier and Lac des Allemands. Hotspots continue to expand, 1 to 4 millon cells per 100 ml lakewide, the highest concentration found in the east half of Bayou Fortier. Lake Fields is completely socked in with HABs 3 to 4 million cells. Lakes Verret and Palourde chug along at a consistent 700-800 thousand cells per 100 ml, lakewide. Check out the latest satellite image from NCCOS here.
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