|
9/19/2024
WT Staff
 Got water questions? Give us a call at 877-52-WATER (877-529-2837), or email us at info@watertoday.ca
September 19, 2024 1154 am PDT
Much above normal streamflows for central coast to San Diego watershed regions, severe drought for Colorado River watershed
Another quiet weather day for California, according to the National Weather Service. No hazardous weather outlooks in effect as of this report. Checking in with the National Hurricane Center for a look at what may be brewing in the Pacific Thursday, NHC reports an area of low pressure could form in the center of the East Pacific late this weekend. The area of interest presently lies significantly southwest of the southwestern coast of Mexico. Conditions appear possible for slow development of this system, a low chance of formation over the next seven days, 20 percent.
Streamflow Situation from the USGS network of streamflow gauges in California
Central coast streamflows remain much above the seasonal norm Thursday, this pattern extending down to the San Diego Watershed. Normal to above normal water levels showing up in the northern coastal and interior watershed regions, leaving only the south in low flow and drought conditions. Colorado River watershed continues with record low flow levels measured in New River near Westmoreland with some improvement seen on the Alamo River near Niland overnight, up to third percentile today. Severe hydrologic drought conditions continue to be felt through Imperial and central Riverside County, central San Bernardino County remains at moderate hyrdologic drought.
See the brown tags on the map to the right for low flow levels in the 1st percentile range, some of the lowest levels recorded on this date in eighty-one years of monitoring New River near Westmoreland. No extreme high flows or flood events are recorded in the monitoring network as of this report.
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 last HAB Update delivered Sept 13 had DANGER advisories posted for six recreational water bodies. Danger-level HAB advisories apply on Lago Los Osos, Contra Loma Reservoir, Lake Anza, Big Break Regional Shoreline, Discovery Bay and Clear Lake. Four Warning-level advisories are posted for Discovery Bay, Clear Lake and San Luis Reservoir with fifteen caution advisories posted on California 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.
|
|
|
All rights reserved 2024 - WTcal - This material may not be reproduced in whole or in part and may not be distributed,
publicly performed, proxy cached or otherwise used, except with express permission.
|
| 
| ABOUT 
