National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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SAN LUIS REY RIVER - OCEANSIDE (SLOC1)
Latitude: 33.22º NLongitude: 117.36º WElevation: 20 Feet
Location: San Diego County in CaliforniaRiver Group: Southern California
Monitor Stage: N/A Flood Stage: 21.0 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.

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
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ043)
Today: Cloudy with patchy fog this morning and becoming partly cloudy. Highs 62 to 65 near the coast to 65 inland. Areas of winds north 10 to 15 mph. Gusts to 25 mph this afternoon.

Tonight: Mostly cloudy in the evening and becoming partly cloudy. Lows 46 to 51. Areas of winds northwest 10 to 15 mph. Gusts to 25 mph in the evening.

Friday: Mostly cloudy in the morning and becoming partly cloudy. Highs around 63. Areas of winds west 10 mph.

Friday Night: Partly cloudy in the evening, then mostly cloudy with a slight chance of rain overnight. Lows 47 to 51. Areas of winds south 10 to 20 mph. Gusts to 35 mph overnight. Chance of measurable precipitation 20 percent.

Saturday: Rain. Rain may be heavy at times. Highs 57 to 61. Areas of winds south 15 to 25 mph. Gusts to 40 mph and becoming 30 mph in the afternoon.

Saturday Night: Showers in the evening, then showers and a slight chance of thunderstorms overnight. Lows 45 to 50.

Sunday: Showers and a slight chance of thunderstorms. Highs 59 to 63.

Sunday Night: Mostly cloudy in the evening and becoming partly cloudy. A slight chance of thunderstorms in the evening. A chance of showers. Lows 46 to 50.

Monday: Partly cloudy. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs 62 to 65.

Monday Night: Mostly clear. Lows 46 to 50.

Tuesday: Mostly sunny. Highs 67 to 72.

Tuesday Night: Mostly clear. Lows 47 to 52.

Wednesday: Mostly sunny. Highs 69 to 74.
Impacts - E19 Information
21.0 FeetDamage unknown. Bridge approaches upstream threatened and at risk of undermining.
24.5 FeetDamage unknown. Camino Del Rey, Couser Canyon, and Shearer Crossing Bridge approaches at risk of being washed out.
28.0 FeetScouring 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 FeetOvertopping 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.
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.