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: Sep 19 2017 at 7:54 AM PDTNext Issuance: Sep 20 2017 at 9:00 AM PDT
Monitor Stage: 8.3 FeetFlood Stage: 10.8 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: Cloudy in the morning and becoming mostly sunny. Highs 73 to 78. Light winds.

Tonight: Partly cloudy in the evening and becoming cloudy. Lows 60 to 65. Light winds.

Thursday: Cloudy in the morning and becoming partly cloudy. Slight chance of showers. Highs 69 to 74. Light winds. Chance of measurable precipitation 20 percent.

Thursday Night: Partly cloudy with a slight chance of showers in the evening, then mostly cloudy overnight. Lows 57 to 63. Light winds. Chance of measurable precipitation 20 percent.

Friday: Mostly cloudy in the morning and becoming partly cloudy. Highs 71 to 76. Light winds becoming west 15 mph with gusts to 25 mph in the afternoon.

Friday Night: Mostly clear in the evening and becoming mostly cloudy. Lows 57 to 64.

Saturday: Mostly cloudy in the morning and becoming mostly sunny. Highs 71 to 76.

Saturday Night: Mostly clear. Lows 54 to 63.

Sunday: Mostly sunny. Highs 73 to 78 near the coast to 77 to 82 inland.

Sunday Night: Mostly clear. Lows 55 to 63.

Monday: Mostly sunny. Highs 76 to 81 near the coast to 81 to 86 inland.

Monday Night: Mostly clear. Lows 57 to 64.

Tuesday: Mostly sunny. Highs 74 to 79 near the coast to 82 to 87 inland.
Impacts - E19 Information
8.3 FeetPersonnel have already started regular patrols of roads and levee.
10.78 FeetVandegrift Road begins to flood downstream of the gage site. Stuart Mesa Road closures can be expected.
13.3 FeetVandegrift Road flooded and is flooded for several miles downstream of the gage site. Stuart Mesa bridge has been overtopped. A portion of Stuart Mesa Road is 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.