CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

SANTA YNEZ RIVER - NARROWS (NRWC1)

Latitude: 34.64º N	Longitude: 120.42º W	Elevation: 85 Feet
Location: Santa Barbara County in California		Bulletin Group: Southern California		River Group: Southern California

Issuance Time:

Dec 27 2025 at 9:19 AM PST

Next Issuance:

Dec 28 2025 at 9:00 AM PST

Action/Monitor: 11.0 Feet

Minor Flood: 15.0 Feet

Moderate Flood: 23.0 Feet

Major Flood: 28.0 Feet

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.

Historical Stage/Flow Data
Note: Water Year 2025 is currently showing peak daily mean values. These will be updated to instantaneous peaks in the coming months.
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2025*	90	2.81	Feb 14, 2025
2024*	12,100	13.43	Feb 20, 2024
2023*	24,400	17.76	Feb 25, 2023
2022*	592	4.62	Dec 23, 2021
2021*	2,710	6.96	Jan 28, 2021
Historical High Stage/Flow Events (Period of Record - Nov 1906 to Present)** - Ranked by Flow
1907	120,000	22.00	Jan 9, 1907
1969*	80,000	24.20	Jan 25, 1969
1914	75,000	13.00	Jan 25, 1914
1978*	63,200	16.80	Mar 04, 1978
1938	45,000	29.30	Mar 03, 1938
2001*	42,300	20.56	Mar 06, 2001
1983*	42,300	14.50	Mar 01, 1983
* Discharge affected by regulation or diversion
** Most recent continuous record back to Oct 1980 with segmented periods back to Nov 1906

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
24.0 Feet	Moderate flooding along river threatens farms and the city of lompoc.
15.0 Feet	Flooding is a threat to lower lompoc, especially around Floradale Ave.
13.0 Feet	Flooding threatens agricultural land and outlying grounds of federal prison.

Official 7 Day National Weather Service Forecast (CAZ347)

Tonight: Clear. Lows in the mid 30s to lower 40s. North winds around 15 mph in the evening.

Sunday: Sunny. Highs in the lower to mid 60s.

Sunday Night: Mostly clear. Lows in the upper 30s to mid 40s.

Monday: Sunny. Highs in the mid 60s.

Monday Night: Clear. Lows in the lower to mid 40s.

Tuesday: Sunny. Highs around 70.

Tuesday Night: Mostly clear in the evening then mostly cloudy. Lows in the mid to upper 40s.

Wednesday: Mostly cloudy. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the mid to upper 60s. Chance of precipitation 40 percent.

Wednesday Night: Showers likely. Lows in the mid 40s to around 50. Chance of precipitation 60 percent.

New Years Day: Showers likely. Highs in the mid 60s. Chance of precipitation 70 percent.

Thursday Night: Showers likely in the evening, then a chance of showers after midnight. Lows around 50. Chance of precipitation 60 percent.

Friday: Mostly cloudy with a 50 percent chance of showers. Highs in the lower to mid 60s.

Friday Night: Mostly cloudy. A chance of showers in the evening, then a slight chance of showers after midnight. Lows in the mid 40s to around 50. Chance of precipitation 40 percent.

Saturday: Mostly cloudy with a 20 percent chance of showers. Highs in the lower to mid 60s.

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 Los Angeles-Oxnard 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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