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 CaliforniaBulletin Group: Southern CaliforniaRiver Group: San Diego/Inland
Issuance Time: Jan 04 2026 at 8:15 AM PSTNext Issuance: Jan 05 2026 at 9:00 AM PST
Action/Monitor: N/A Minor Flood: 21.0 FeetModerate Flood: 24.5 FeetMajor Flood: 28.0 Feet

Please Note:
1) Each individual timeseries plotted on the graphical river forecast can be toggled on and off by clicking the legend entry above. If the "Observed (Raw Data)" contains bad data and is toggled off, the plot will scale to the remaining timeseries.

2) At extremely low river flows, the "Observed (Raw Data)" may show readings below the lower end of the available rating table, while the "Observed (Simulated)" will only show values at the bottom of the rating table, creating a potential discrepancy between the two readings.
Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View US Geological Survey (USGS) Data for this station location.

Verification - Historical Graphical RVF
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Historical Stage/Flow Data
Note: Water Year 2025 is currently showing peak daily mean values. These will be updated to instantaneous peaks in the coming months.
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2025*
120
7.03
Mar 14, 2025
2024*
1,080
9.36
Feb 6, 2024
2023*
3,050
12.57
Mar 15, 2023
2022*
66
6.71
Dec 26, 2021
2021*
95
6.97
Jan 29, 2021
 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
1937*
16,500
12.00
Feb 07, 1937
 * 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
Flood Impacts
28.0 FeetExcess overflow of water has damaged some sewer and water mains in the city of oceanside. The lilac road bridge on the pala indian reservation has likely washed out. The rincon casino has been evacuated. Approaches to upstream crossings are likely damaged or washed out. North river road has likely been undermined in oceanside. The retainaing wall protecting homes in the rancho viejo project upstream from oceanside is likely compromised. Pala casino is at risk with possible evacuations.
24.5 FeetExtent of damage unknown. It is possible that the approaches to several of the upstream crossings will be damaged or washed out. The lilac road bridge on the pala indian reservation is likely impassable. Undermining of north river road in oceanside is possible. Undermining of the retaining wall protecting homes in the rancho viejo project is possible. Businesses in the flood plain not protected by the levee are at risk of innundation, including the pala casino parking areas and the rincon casino itself.
21.0 FeetApproaches to upstream bridges including camino del rey, shearer crossing, and couser canyon, among others, are threatened and possibly damaged. The lilac road bridge on the pala reservation is at risk.
12.0 FeetLOW-WATER CROSSINGS CAN BE IMPACTED WELL UPSTREAM OF THE GAGE BEFORE SIGNIFICANT GAGE RESPONSE OCCURS. GAGE HEIGHTS OF 9.5 TO 12 FT HAVE BEEN ASSOCIATED WITH THE CLOSING OF COLE GRADE ROAD AND LILAC ROADS.
Official 7 Day National Weather Service Forecast   (CAZ043)
Tonight: Showers. Lows 52 to 55. Areas of winds south 10 to 15 mph. Gusts to 30 mph and becoming 25 mph overnight.

Monday: Cloudy with a chance of showers and a slight chance of thunderstorms in the morning, then partly cloudy with a slight chance of showers in the afternoon. Highs around 63. Areas of winds south to 10 mph. Chance of measurable precipitation 50 percent.

Monday Night: Mostly cloudy with a slight chance of showers. Lows 49 to 53. Light winds becoming east 10 mph overnight. Chance of measurable precipitation 20 percent.

Tuesday: Cloudy in the morning, then mostly cloudy with a slight chance of showers in the afternoon. Highs 63 to 66. Areas of winds east 10 mph becoming southwest in the afternoon. Chance of measurable precipitation 20 percent.

Tuesday Night: Partly cloudy with a slight chance of showers. Lows 47 to 52. Light winds. Chance of measurable precipitation 20 percent.

Wednesday: Partly cloudy in the morning and becoming mostly sunny. Highs around 65.

Wednesday Night: Partly cloudy. Lows 46 to 50.

Thursday: Partly cloudy in the morning and becoming mostly sunny. Highs 63 to 66 near the coast to 67 inland.

Thursday Night: Mostly clear. Lows 46 to 49.

Friday: Mostly sunny. Highs 66 to 69.

Friday Night: Mostly clear in the evening and becoming partly cloudy. Lows around 50.

Saturday: Partly cloudy in the morning and becoming mostly sunny. Highs 69 to 72.

Saturday Night: Mostly clear. Lows 47 to 51.

Sunday: Mostly sunny. Highs 70 to 74.
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.