CNRFC - Hydrology - River Guidance - Graphical RVF

*** 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.

Location:

ARROYO MOCHO - PLEASANTON (AYMC1)

Latitude: 37.69º N	Longitude: 121.87º W	Elevation: 335 Feet
Location: Alameda County in California		Bulletin Group: Central Coast		River Group: South Bay

Issuance Time:

Jun 21 2025 at 11:02 AM PDT

Next Issuance:

Jun 22 2025 at 9:00 AM PDT

Action/Monitor: N/A

Minor Flood: N/A

Moderate Flood: N/A

Major Flood: N/A

Plot Type:

Please Note:
1) Each individual timeseries plotted on the graphical river forecast can be toggled on and off by clicking the legend entry above. If the "Observed (Raw Data)" contains bad data and is toggled off, the plot will scale to the remaining timeseries.

2) At extremely low river flows, the "Observed (Raw Data)" may show readings below the lower end of the available rating table, while the "Observed (Simulated)" will only show values at the bottom of the rating table, creating a potential discrepancy between the two readings.

Observed Data Credit
	Raw streamflow data is provided by the Zone 7 Water Agency. View Zone 7 Water Agency Data for this station location.

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ510)

rest of Tonight: Clear. Lows in the 50s. West winds 5 to 15 mph.

Sunday: Sunny. Highs in the upper 70s to mid 80s. West winds 5 to 15 mph.

Sunday Night: Clear. Lows in the lower to mid 50s. West winds 10 to 20 mph and becoming southwest 5 to 10 mph after midnight.

Monday: Sunny. Highs in the mid 80s to lower 90s. West winds 5 to 10 mph.

Monday Night: Mostly clear. Lows in the mid 50s. Southwest winds 5 to 15 mph.

Tuesday: Sunny. Highs in the 80s.

Tuesday Night and Wednesday: Mostly clear. Lows in the mid 50s. Highs in the mid 80s to lower 90s.

Wednesday Night through Saturday: Clear. Lows in the upper 50s. Highs in the mid 80s to lower 90s.

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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Verification - Historical Graphical RVF
Month:	Day:	Year:	Cycle:
To view other verification locations, use our Historical Graphical River Forecast Interface.