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9/12/2024
WT Staff
 Got water questions? Give us a call at 877-52-WATER (877-529-2837), or email us at info@watertoday.ca
September 12, 2024 1112 am PDT
Francine past New Orleans, downgraded to Tropical Depression, all watches and warnings cancelled
Streamflow Situation from the USGS network of streamflow gauges
Tracking Francine: Downgraded to Tropical Depression this morning, Francine is slowing down over land, the current intensity down to 35 mph as the storm moves north through Mississippi. Flooding is currently recorded on six sites in the Louisiana network of USGS streamflow gauges north of New Orleans. All watches and warnings for Louisiana have been cancelled.
Clear and sunny again in the Central Valley with no hazardous weather in the forecast; San Diego local forecast office reporting some clouds today and drizzle for tonight. USGS network of streamflow monitors in California shows above normal to much above normal flows in all but the south, Colorado River watershed region is in a state of severe drought from Imperial through San Bernardino County today with low flows recorded on the New River and Alamo River.
WT HAB Tracker from the satellite monitoring program of the NOAA National Centers for Coastal Ocean Science(NCCOS), Cyanobacteria Assessment Network (CyAN) and State sources where available
California
California Water Boards HAB Update of Friday, Sept 6 carries 12 DANGER and 12 Warning advisories for recreational water bodies. Danger and Warning advisories signage is posted on the beaches, be sure to heed the specific safety measures to avoid inhaling, ingesting or absorbing cyanotoxins, see the bluegreen tags on the map to the right for the water bodies impacted.
No discussion of HABs is complete without follow-up testing for cyanotoxins. The presence of bluegreen algae does not guarantee the presence of cyanotoxins, this can only be established through analysis of the water samples. As laboratory water testing is costly and time consuming, local health authorities rely on observation of HABs, including the assistance of Cyanobacteria Assessment Network (CyAN) to estimate concentration in order to decide when and where testing will be done. Given exposure to cyanotoxins above a maximum concentration is associated with permanent damage to vital organs in humans, the signs of which may not be felt until damage is done, it is prudent for local public health authorities to take a cautious approach when the toxicity status of a water body is unknown.
Big Valley Pomo Environmental Protection Agency has been leading the program of water monitoring for Clear Lake for more than a decade, including sampling and testing for cyanotoxins. Find the latest toxicity test results for Clear Lake here.
Check out the latest California HAB Tracker report, here, and see the bluegreen tags on the map to the right for more information. The new HAB update is anticipated from California Water Boards tomorrow, Friday September 13.
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