CNRFC - Hydrology - River Guidance - Graphical RVF

SANTA MARGARITA RIVER - YSIDORA (YDRC1)

Latitude: 33.31º N	Longitude: 117.35º W	Elevation: 75 Feet
Location: San Diego County in California		River Group: Southern California

Issuance Time:

Feb 15 2019 at 2:59 PM PST

Next Issuance:

Feb 16 2019 at 9:00 AM PST

Monitor Stage: 8.3 Feet

Flood Stage: 10.9 Feet

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

Historical Stage/Flow Data
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2017*	31,200	14.60	Jan 22, 2017
2016*	1,060	7.14	Jan 7, 2016
2015*	1,550	7.15	Dec 4, 2014
2014*	2,230	7.76	Mar 1, 2014
2013*	218	5.66	Mar 8, 2013
Historical High Stage/Flow Events (Period of Record - Sep 2001 to Present)**
1993*	44,000***	20.47***	Jan 16, 1993
1927	33,600****	18.00	Feb 16, 1927
2017*	31,200	14.60	Jan 22, 2017
1938	31,000	12.70	Mar 3, 1938
2005*	25,600***	13.5***	Jan 11, 2005
1980*	24,000***	18.80	Feb 18, 1980

* Discharge affected by regulation or diversion
** Most recent continuous record back to Sep 2001 with segmented periods back to Feb 1923
*** Estimated value
**** Highest flow since regulation by Skinner Reservoir began in 1974

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ043)

Tonight: Numerous showers. Lows 43 to 50. Areas of winds west 15 mph with gusts to 25 mph. Chance of measurable precipitation 70 percent.

Saturday: Partly cloudy. Highs 57 to 62. Areas of winds west 15 to 20 mph. Gusts to 25 mph and becoming 30 mph in the afternoon.

Saturday Night: Mostly cloudy with scattered showers. Lows 42 to 49. Areas of winds west 15 mph with gusts to 25 mph. Chance of measurable precipitation 50 percent.

Sunday: Numerous showers in the morning, then widespread showers in the afternoon. Highs 54 to 59. Areas of winds west 15 to 25 mph. Gusts to 25 mph and becoming 35 mph in the afternoon.

Sunday Night: Mostly cloudy with numerous showers in the evening, then partly cloudy with scattered showers overnight. Lows 36 to 44. Areas of winds northwest 15 to 20 mph. Gusts to 35 mph and becoming 25 mph overnight. Chance of measurable precipitation 70 percent.

Washingtons Birthday: Partly cloudy in the morning and becoming mostly sunny. Highs 56 to 61.

Monday Night: Mostly clear. Lows 36 to 42.

Tuesday: Mostly sunny. Highs 57 to 62.

Tuesday Night: Mostly clear. Lows 37 to 44.

Wednesday: Partly cloudy. Highs 57 to 62.

Wednesday Night: Partly cloudy with a chance of showers. Lows 40 to 46.

Thursday: Showers likely. Highs around 57.

Thursday Night: Partly cloudy with a chance of showers. Lows 38 to 44.

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

Impacts - E19 Information
8.3 Feet	Personnel have already started regular patrols of roads and levee.
10.93 Feet	Vandegrift Road begins to flood downstream of the gage site. Stuart Mesa Road closures can be expected.
13.25 Feet	Vandegrift Road flooded and is flooded for several miles downstream of the gage site. Stuart Mesa bridge has been overtopped. Portions of Stuart Mesa Road near the bridge are flooded.
16.05 Feet	Widespread inundation on Camp Pendleton with base evacuations likely. 01/16/1993 - flood of record.

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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