CNRFC - Hydrology - Observed River/Reservoir Conditions

*** IMPORTANT *** Week of June 16 - Website Data Outage - Due to a major computer upgrade the week of June 16, nearly all data on the CNRFC web site will not be updated. We anticipate the down time to be approximately 4 days. The latest deterministic hydrologic forecasts for official forecast points will continue to be available at the National Water Prediction Service during this time.

SAN LORENZO CREEK - HAYWARD (LRZC1)

Latitude: 37.69º N	Longitude: 122.06º W	Elevation: 133 Feet
Location: Alameda County in California		Bulletin Group: Central Coast		River Group: South Bay

Action/Monitor: 20.85 Feet

Minor Flood: 24.6 Feet

Moderate Flood: N/A

Major Flood: N/A

Plot Type:

Observed Data Credit
	Raw streamflow data is provided by the US Geological Survey (USGS). View US Geological Survey (USGS) Data for this station location.

ESRI™ Locator Map

Flood Impacts
33.0 Feet	Major Flooding. Homes and local roadways inundated with several feet of water.
29.64 Feet	Moderate Flooding. Homes and roadways adjacent to the creek in this location begin to flood.
24.64 Feet	Minor Flooding. At 24.64 feet, flooding may have begun downstream at the San Lorenzo Creek near San Lorenzo stream gage. NWS will issue Flash Flood Warning if not already issued.
20.85 Feet	Monitor stage. At 20.85 feet the San Lorenzo Creek near San Lorenzo gage downstream is close to flooding. NWS will issue a Flash Flood Watch if not already issued.

Official 7 Day National Weather Service Forecast (CAZ508)

Today: Partly cloudy in the morning then becoming sunny. Highs in the mid 60s to lower 70s. West winds 10 to 20 mph. Gusts up to 35 mph in the afternoon.

Tonight: Mostly clear. Lows in the lower 50s. West winds 10 to 20 mph with gusts to around 35 mph.

Tuesday: Sunny. Highs in the 60s to upper 70s. West winds 10 to 20 mph.

Tuesday Night: Clear in the evening then becoming partly cloudy. Lows in the mid 50s. West winds 10 to 20 mph.

Wednesday: Partly cloudy in the morning then becoming sunny. Highs in the 70s. West winds 5 to 10 mph increasing to 10 to 20 mph in the afternoon.

Wednesday Night: Mostly clear. Lows in the lower 50s.

juneteenth through Saturday: Mostly clear. Breezy. Highs in the mid 60s to lower 70s. Lows in the lower 50s.

Saturday Night: Clear, breezy. Lows in the lower 50s.

Sunday: Sunny. Highs in the 60s to upper 70s.

Product Disclaimer

This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS San Francisco Bay Area-Monterey Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only.

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