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: Apr 20 2018 at 7:33 AM PDTNext Issuance: Apr 21 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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To view other verification locations, use our Historical Graphical River Forecast Interface.
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)
Tonight: Mostly clear in the evening and becoming partly cloudy. Patchy fog overnight. Lows 45 to 53. Light winds.

Saturday: Partly cloudy in the morning and becoming mostly sunny. Patchy fog in the morning. Highs 66 to 71 near the coast to 74 to 79 inland. Light winds.

Saturday Night: Partly cloudy in the evening and becoming mostly cloudy. Patchy fog overnight. Lows 47 to 55. Light winds.

Sunday: Mostly cloudy in the morning and becoming mostly sunny. Patchy fog in the morning. Highs 65 to 70 near the coast to 74 to 79 inland. Light winds.

Sunday Night: Partly cloudy in the evening and becoming cloudy. Patchy fog overnight. Lows 49 to 55. Light winds.

Monday: Cloudy in the morning and becoming partly cloudy. Patchy fog in the morning. Highs 64 to 69 near the coast to 71 to 76 inland.

Monday Night: Partly cloudy in the evening and becoming cloudy. Patchy fog overnight. Lows 49 to 55.

Tuesday: Cloudy in the morning and becoming partly cloudy. Patchy fog in the morning. Highs 64 to 69 near the coast to 70 to 75 inland.

Tuesday Night: Partly cloudy in the evening and becoming cloudy. Patchy fog overnight. Lows 49 to 54.

Wednesday: Cloudy in the morning and becoming mostly sunny. Patchy fog in the morning. Highs 63 to 68 near the coast to 68 to 73 inland.

Wednesday Night: Mostly clear in the evening and becoming mostly cloudy. Patchy fog overnight. Lows 49 to 54.

Thursday: Mostly cloudy in the morning and becoming mostly sunny. Patchy fog in the morning. Highs 63 to 68 near the coast to 67 to 72 inland.

Thursday Night: Mostly clear in the evening and becoming mostly cloudy. Patchy fog overnight. Lows 50 to 55.

Friday: Mostly cloudy in the morning and becoming partly cloudy. Patchy fog in the morning. Highs 65 to 70.
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.