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:

Jul 19 2019 at 8:00 AM PDT

Next Issuance:

Jul 20 2019 at 9:00 AM PDT

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
2018*	1,830	7.18	Jan 10, 2018
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
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)

Today: Cloudy in the morning and becoming partly cloudy. Patchy fog in the morning. Highs 69 to 74 near the coast to 74 to 79 inland. Light winds.

Tonight: Partly cloudy in the evening and becoming cloudy. Patchy fog overnight. Lows 58 to 63. Light winds.

Sunday: Cloudy in the morning and becoming partly cloudy. Patchy fog in the morning. Highs 69 to 74 near the coast to 76 to 81 inland. Light winds.

Sunday Night: Partly cloudy. Patchy fog overnight. Lows 59 to 64. Light winds.

Monday: Partly cloudy. Patchy fog in the morning. Highs 70 to 75 near the coast to 79 to 84 inland. Light winds.

Monday Night: Partly cloudy. Patchy fog overnight. Lows 60 to 65.

Tuesday: Partly cloudy. Patchy fog in the morning. Highs 73 to 78 near the coast to 82 to 87 inland.

Tuesday Night: Partly cloudy. Patchy fog overnight. Lows 59 to 64.

Wednesday: Partly cloudy. Patchy fog in the morning. Highs 74 to 79 near the coast to 84 to 89 inland.

Wednesday Night: Partly cloudy. Patchy fog overnight. Lows 59 to 64.

Thursday: Partly cloudy. Patchy fog in the morning. Highs 73 to 78 near the coast to 82 to 87 inland.

Thursday Night: Partly cloudy. Patchy fog overnight. Lows 59 to 64.

Friday: Partly cloudy in the morning and becoming mostly sunny. Patchy fog in the morning. Highs 73 to 78 near the coast to 82 to 87 inland.

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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Verification - Historical Graphical RVF
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