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		River Group: Southern California

Monitor Stage: N/A

Flood Stage: 21.0 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
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
2017*	2,750	14.31	Feb 28, 2017
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

Official 7 Day National Weather Service Forecast (CAZ043)

Tonight: Partly cloudy this evening and becoming mostly cloudy. Lows in the lower 60s. Light winds.

Sunday: Mostly cloudy in the morning and becoming partly cloudy. Patchy fog in the morning. Highs in the lower 70s near the coast to in the upper 70s inland. Light winds.

Sunday Night: Partly cloudy in the evening and becoming mostly cloudy. Patchy fog. Lows in the lower 60s. Light winds.

Monday: Mostly cloudy in the morning and becoming partly cloudy. Patchy fog in the morning. Highs in the mid 70s near the coast to 80 inland. Light winds.

Monday Night: Partly cloudy. Patchy fog. Lows in the mid 60s. Light winds.

Tuesday: Mostly cloudy in the morning and becoming mostly sunny. Patchy fog in the morning. Highs in the upper 70s near the coast to in the lower 80s inland.

Tuesday Night: Mostly clear in the evening and becoming mostly cloudy. Patchy fog overnight. Lows in the mid 60s.

Wednesday: Partly cloudy in the morning and becoming mostly sunny. Patchy fog in the morning. Highs in the upper 70s near the coast to in the lower 80s inland.

Wednesday Night: Mostly clear in the evening and becoming partly cloudy. Patchy fog overnight. Lows in the mid 60s.

Thursday: Partly cloudy in the morning and becoming mostly sunny. Patchy fog in the morning. Highs in the upper 70s near the coast to in the mid 80s inland.

Thursday Night: Mostly clear in the evening and becoming partly cloudy. Patchy fog overnight. Lows in the mid 60s.

Friday: Partly cloudy in the morning and becoming mostly sunny. Patchy fog in the morning. Highs in the lower 80s near the coast to in the upper 80s inland.

Friday Night: Partly cloudy. Patchy fog overnight. Lows in the upper 60s.

Saturday: Partly cloudy in the morning and becoming mostly sunny. Patchy fog in the morning. Highs around 80 near the coast to in the mid 80s inland.

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.

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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