CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

LYTLE CREEK - COLTON (YTLC1)

Latitude: 34.08º N	Longitude: 117.30º W	Elevation: 975 Feet
Location: San Bernardino County in California		Bulletin Group: Southern California		River Group: Southern California

Issuance Time:

Jul 11 2025 at 7:49 AM PDT

Next Issuance:

Jul 12 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 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)

Today: Partly cloudy with patchy fog this morning and becoming sunny. Highs 89 to 97. Areas of winds west to 10 mph and becoming 10 to 15 mph with gusts to 25 mph this afternoon.

Tonight: Mostly clear. Lows 56 to 63. Areas of winds west 10 to 15 mph with gusts to 25 mph in the evening becoming light.

Sunday: Partly cloudy with patchy fog in the morning and becoming sunny. Highs 91 to 98. Areas of winds west to 10 mph and becoming 10 to 15 mph with gusts to 25 mph in the afternoon.

Sunday Night: Clear. Lows 58 to 64. Areas of winds west 10 to 15 mph with gusts to 25 mph in the evening becoming light.

Monday: Mostly sunny. Highs 91 to 99. Areas of winds west to 10 mph.

Monday Night: Mostly clear. Lows 57 to 63.

Tuesday: Mostly sunny. Highs 88 to 96.

Tuesday Night: Mostly clear. Lows 52 to 60.

Wednesday: Mostly sunny. Highs 86 to 94.

Wednesday Night: Mostly clear. Lows 53 to 60.

Thursday: Mostly sunny. Highs 88 to 95.

Thursday Night: Mostly clear. Lows 54 to 62.

Friday: Mostly sunny. Highs 89 to 96.

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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Verification - Historical Graphical RVF
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To view other verification locations, use our Historical Graphical River Forecast Interface.