National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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DEL PUERTO CREEK - PATTERSON (PTTC1)
Latitude: 37.49º NLongitude: 121.21º WElevation: 200 Feet
Location: Stanislaus County in CaliforniaBulletin Group: San JoaquinRiver Group: San Joaquin
Issuance Time: May 08 2025 at 8:12 AM PDTNext Issuance: May 09 2025 at 9:00 AM PDT
Action/Monitor: N/A Minor Flood: N/A Moderate Flood: N/A Major Flood: N/A

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

Verification - Historical Graphical RVF
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To view other verification locations, use our Historical Graphical River Forecast Interface.
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ019)
Today: Sunny. Highs 87 to 95. Northwest winds up to 10 mph.

Tonight: Clear. Lows 56 to 66. Northwest winds up to 10 mph.

Saturday: Sunny. Highs 87 to 96. Northwest winds up to 10 mph. Gusts up to 20 mph in the afternoon.

Saturday Night: Clear. Lows 54 to 60. Northwest winds up to 15 mph.

Sunday: Sunny. Highs 75 to 85. West winds up to 15 mph with gusts to around 25 mph.

Sunday Night: Clear, cooler. Lows 46 to 52.

Monday: Partly cloudy with a slight chance of rain showers. Highs 62 to 72.

Monday Night: Partly cloudy with a slight chance of rain showers. Lows 45 to 51.

Tuesday: Partly cloudy. Highs 63 to 71.

Tuesday Night through Wednesday Night: Clear. Lows 45 to 54. Highs 67 to 77.

Thursday: Sunny. Highs 76 to 85.
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 Sacramento 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.