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

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SANTA MARGARITA RIVER - YSIDORA (YDRC1)
Latitude: 33.31º NLongitude: 117.35º WElevation: 75 Feet
Location: San Diego County in CaliforniaRiver Group: Southern California
Issuance Time: Feb 22 2018 at 1:23 PM PSTNext Issuance: Feb 23 2018 at 9:00 AM PST
Monitor Stage: 8.3 FeetFlood Stage: 10.9 Feet
Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View USGS Data for this station location.

Verification - Historical Graphical RVF
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Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
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
2012*
263
5.67
Mar 26, 2012
 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
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
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ043)
Today: Partly cloudy. Slight chance of showers in the morning. Highs around 56. Areas of winds west 15 to 20 mph with gusts to 30 mph. Chance of measurable precipitation 20 percent.

Tonight: Mostly clear. Colder. Lows 35 to 44. Light winds.

Saturday: Mostly sunny. Highs around 63. Light winds.

Saturday Night: Mostly clear. Lows 37 to 47. Light winds.

Sunday: Mostly sunny. Highs 65 to 70. Light winds becoming west 15 mph in the afternoon.

Sunday Night: Mostly clear. Lows 41 to 50.

Monday: Mostly sunny in the morning and becoming partly cloudy. Highs around 62.

Monday Night: Partly cloudy. Chance of showers overnight. Lows 43 to 51.

Tuesday: Partly cloudy with a chance of showers. Highs around 56.

Tuesday Night: Partly cloudy. Chance of showers in the evening, then slight chance of showers overnight. Lows 40 to 49.

Wednesday: Partly cloudy with a slight chance of showers. Highs around 61.

Wednesday Night: Partly cloudy with a slight chance of showers. Lows 43 to 50.

Thursday: Partly cloudy. Slight chance of showers in the morning, then chance of showers in the afternoon. Highs around 62.
Impacts - E19 Information
8.3 FeetPersonnel have already started regular patrols of roads and levee.
10.93 FeetVandegrift Road begins to flood downstream of the gage site. Stuart Mesa Road closures can be expected.
13.25 FeetVandegrift 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 FeetWidespread 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.