CNRFC - Hydrology - Observed River/Reservoir Conditions

SAN LUIS REY RIVER - OCEANSIDE (SLOC1)

Latitude: 33.22º N	Longitude: 117.36º W	Elevation: 20 Feet
Location: San Diego County in California		Bulletin Group: Southern California		River Group: San Diego/Inland

Monitor Stage: N/A

Flood Stage: 21.0 Feet

Plot Type:

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
2022*	66	6.71	Dec 26, 2021
2021*	95	6.97	Jan 29, 2021
2020*	5,520	16.18	Apr 11, 2020
2019*	8,240	18.49	Feb 15, 2019
2018*	121	7.02	Jan 9, 2018
Historical High Stage/Flow Events (Period of Record - Oct 1946 to Present)*** - Ranked by Flow
1916	95,600	--	Jan 27, 1916
1993**	25,700	21.70	Jan 16, 1993
1980*	25,000	14.00	Feb 21, 1980
2005*	21,800	20.68	Jan 11, 2005
1995*	19,500	19.97	Mar 06, 1995
* Discharge affected by regulation or diversion
** Maximum since regulation by Lake Henshaw
*** Most recent continuous record back to Oct 1946 with segmented periods back to Apr 1912
**** No flow recorded during the entire water year

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Impacts - E19 Information
21.0 Feet	Damage unknown. Bridge approaches upstream threatened and at risk of undermining.
24.5 Feet	Damage unknown. Camino Del Rey, Couser Canyon, and Shearer Crossing Bridge approaches at risk of being washed out.
28.0 Feet	Scouring and undermining of roads and structures adjacent to the river channel. Bridge approaches designed to wash out at high flows destroyed. Indian gaming casinos parking facilities under water. Most significant damage upstream of levee with adjacent cropland underwater and homes threatened. Some infrastructure facilities damaged in city of Oceanside.
29.0 Feet	Overtopping levee. Henshaw Dam was not in place nor was the levee at time of record flow. Levee is designed for PMF of 85,000 cfs. Peak adjusted discharge of 1916 event with Henshaw Dam is estimated to be 54,000 cfs. This is also assumed to be the 100 year storm.

Official 7 Day National Weather Service Forecast (CAZ043)

Today: Partly cloudy this morning, then mostly cloudy with a slight chance of showers this afternoon. Highs around 64. Light winds becoming west 10 mph this afternoon. Chance of measurable precipitation 20 percent.

Tonight: Mostly cloudy. A chance of showers in the evening, then showers likely overnight. Lows 46 to 54. Areas of winds west 10 to 15 mph. Chance of measurable precipitation 60 percent.

Thursday: Showers likely in the morning, then partly cloudy with a chance of showers in the afternoon. Highs around 63. Areas of winds west to 10 mph. Chance of measurable precipitation 70 percent.

Thursday Night: Partly cloudy with a chance of showers. Lows 45 to 52. Light winds becoming south 10 mph overnight. Chance of measurable precipitation 50 percent.

Friday: Partly cloudy. A slight chance of showers in the morning. Highs 63 to 67. Areas of winds south 10 mph becoming west in the afternoon. Chance of measurable precipitation 20 percent.

Friday Night: Mostly clear. Lows 40 to 47.

Saturday: Mostly sunny. Highs 65 to 70.

Saturday Night: Mostly clear. Lows 41 to 48.

Sunday: Mostly sunny. Highs 67 to 72.

Sunday Night: Mostly clear. Lows 44 to 50.

Monday: Mostly sunny. Highs 72 to 77.

Monday Night: Mostly clear. Lows 47 to 53.

Tuesday: Mostly sunny. Highs 73 to 78 near the coast to 79 inland.

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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