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12/27/2024
WT Staff
 Got water questions? Give us a call at 877-52-WATER (877-529-2837), or email us at info@watertoday.ca
December 27, 2024 955 am PST
Colgan Creek flooding near Sebastopol in North Coast Region 1
Streamflow Situation from the network of USGS river flow gauges in California
Colgan Creek breached minor flood stage just after midnight, the water level rose sharply, peaking in moderate flood stage near Sebastopol at around 3 am this morning. The water level is receding now, a foot over the channel and coming down as quickly as it rose. Dozens of stations are recording 99th percentile high flows in Region 1, see the map on the front page for details, the black tag for the flooding, blue tags for high flows.
San Francisco, Central Coast and Central Valley watershed Region 5, are running above normal streamflows again today, with Los Angeles and San Diego watersheds at seasonal normal. Colorado River and Lahontan watershed regions remain below seasonal normal. Lahontan continues with extreme drought in southeast Inyo County, below normal rating applies to the remaining area of Inyo, extending over the divide to Colorado River watershed's San Bernardino, Riverside and Imperial Counties.
Overcast and 52 degrees at Visalia Municipal Airport in the Central Valley Region 5 watershed today, rain likely before 10 am, less than a tenth of an inch expected. The high around 60, according to NWS Hanford. A high surf alert remains in effect for San Francisco, up to 30 foot waves impacting Coastal North Bay Including Point Reyes National Seashore, San Francisco Peninsula Coast, Northern Monterey Bay, Southern Monterey Bay and the Big Sur Coast. Downtown San Francisco is recorded at 58 degrees, a 30 percent chance of rain coming tonight, mainly between 11pm and 5am. Patchy fog after 2am, no more than a tenth of an inch of rain expected. Partly sunny Friday in LA, 55 degrees, heading for a high 67 with patchy fog coming in tonight. Drizzle, high 63 in San Diego watershed Friday with a beach hazard statement in effect until Sunday, elevated surf of 4 to 7 feet, dangerous rip currents and minor overflow during highest tides along the San Diego County coastline.
High Surf Advisory issued by NWS San Francisco 943 am Fri Dec 27
HIGH SURF ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 4 PM PST SUNDAY
Large breaking waves of 20 to 30 feet on the Pacific Coast, from 10 AM Thursday to 4 PM PST Sunday. Dangerous swimming and surfing conditions and localized beach erosion can be expected. Large waves can sweep across the beach without warning, pulling people into the sea from rocks, jetties and beaches.
Sudden immersion in cold water can result in cold water shock even for the most experienced swimmers. Cold water shock can result in dramatic changes in breathing, heart rate and blood pressure, greatly increasing the risk of drowning in rough open waters.
Inexperienced swimmers should remain out of the water due to dangerous surf conditions.
Impacting Coastal North Bay Including Point Reyes National Seashore-
San Francisco Peninsula Coast-Northern Monterey Bay-
Southern Monterey Bay and Big Sur Coast
Safe Drinking Water Act
See how drinking water facility compliance compares in Ohio, New York, Georgia, Louisiana and California, here.
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