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: Oct 23 2018 at 7:06 AM PDTNext Issuance: Oct 24 2018 at 9:00 AM PDT
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
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
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ043)
Today: Areas of low clouds in the morning then mostly sunny. Highs 68 to 73 near the coast to 74 inland. Light winds.

Tonight: Partly cloudy. Lows 54 to 61. Light winds.

Wednesday: Patchy low clouds in the morning then partly cloudy. Highs 69 to 74 near the coast to 74 to 79 inland. Light winds.

Wednesday Night: Partly cloudy. Patchy fog overnight. Lows 52 to 60. Light winds.

Thursday: Mostly sunny. Patchy fog in the morning. Highs 73 to 78 near the coast to 79 to 84 inland. Light winds.

Thursday Night: Mostly clear. Lows 53 to 61.

Friday: Mostly sunny. Highs 78 to 83 near the coast to 84 to 89 inland.

Friday Night: Mostly clear. Lows 54 to 62.

Saturday: Mostly sunny. Highs 77 to 82 near the coast to 84 inland.

Saturday Night: Mostly clear. Lows 55 to 62.

Sunday: Mostly sunny in the morning and becoming partly cloudy. Highs 73 to 78 near the coast to 80 inland.

Sunday Night: Partly cloudy. Lows 55 to 62.

Monday: Partly cloudy. Highs 72 to 77 near the coast to 77 inland.
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.