CNRFC - Hydrology - River Guidance - Graphical RVF

End of River Group

Location:

SANTA MARGARITA RIVER - TEMECULA (SMHC1)

Latitude: 33.47º N	Longitude: 117.14º W	Elevation: 950 Feet
Location: Riverside County in California		Bulletin Group: Southern California		River Group: San Diego/Inland

Issuance Time:

Dec 25 2025 at 8:08 AM PST

Next Issuance:

Dec 25 2025 at 3:00 PM PST

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 US Geological Survey (USGS). View US Geological Survey (USGS) Data for this station location.

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ048)

Tonight: Rain and a slight chance of thunderstorms this evening, then a chance of showers overnight. Rain may be heavy at times this evening. Lows 48 to 53. Areas of winds southwest 10 to 15 mph. Gusts to 30 mph and becoming 25 mph overnight.

Christmas Day: Mostly cloudy. A chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Highs 60 to 65. Areas of winds south 10 to 20 mph with gusts to 30 mph. Chance of measurable precipitation 50 percent.

Thursday Night: Mostly cloudy. A chance of showers in the evening, then showers likely overnight. Lows 46 to 52. Areas of winds south 10 to 15 mph. Gusts to 25 mph and becoming 30 mph overnight. Chance of measurable precipitation 70 percent.

Friday: Showers. Highs 57 to 61. Areas of winds south 10 to 20 mph with gusts to 30 mph.

Friday Night: Mostly cloudy with showers likely in the evening, then partly cloudy with a chance of showers overnight. Lows 40 to 43 in wind sheltered areas to 42 to 47 in warmer locations. Areas of winds south 10 to 15 mph with gusts to 30 mph becoming west overnight. Chance of measurable precipitation 70 percent.

Saturday: Partly cloudy with a slight chance of showers. Highs 56 to 61.

Saturday Night: Partly cloudy in the evening and becoming mostly clear. Lows 37 to 44.

Sunday: Mostly sunny. Highs 61 to 66.

Sunday Night: Mostly clear. Lows 38 to 46.

Monday: Mostly sunny in the morning and becoming partly cloudy. Highs 65 to 70.

Monday Night: Mostly clear in the evening and becoming partly cloudy. Lows 43 to 49.

Tuesday: Partly cloudy with a slight chance of showers. Highs 69 to 74.

Tuesday Night: Partly cloudy with a slight chance of showers in the evening, then mostly cloudy with a chance of showers overnight. Lows 47 to 52.

Wednesday: Mostly cloudy with a chance of showers. Highs 67 to 72.

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 Diego 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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