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


Latitude: 37.04º NLongitude: 122.07º WElevation: 227 Feet
Location: Santa Cruz County in CaliforniaBulletin Group: Central CoastRiver Group: Salinas/Pajaro
Issuance Time: Dec 09 2023 at 8:45 AM PSTNext Issuance: Dec 10 2023 at 9:00 AM PST
Monitor Stage: 14.0 FeetFlood Stage: 16.5 Feet

Please Note: 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.
Observed Data Credit
Gage owner logo

Raw streamflow data is provided by the US Geological Survey (USGS).
View USGS Data for this station location.

Verification - Historical Graphical RVF
To view other verification locations, use our Historical Graphical River Forecast Interface.
Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
 Most Recent 5 Years
2022 5,600 16.06 Dec 13, 2021
1,750 9.11 Jan 28, 2021
Dec 7, 2019
Jan 17, 2019
Mar 22, 2018
 Historical High Stage/Flow Events (Period of Record - Oct 1936 to Present)* - Ranked by Flow
Dec 23, 1955
Jan 5, 1982
1940 24,000 21.10** Feb 27, 1940
Jan 9, 2023
1986 19,800 21.22 Feb 17, 1986
 * Low flow partially regulated by Loch Lomond Reservoir since 1961, and inflatable fiber dam located 500 ft upstream from gauge. Many small diversions upstream from station for domestic supply.
 ** Unknown old datum.
Location Photographs
ESRI™ Locator Map
Impacts - E19 Information
14.0 FeetStage can rise rapidly on the San Lorenzo River, up to several feet per hour. Approximately 2.5 feet below flood levels in Paradise Park and approximately 5.5 feet below flood stage in Felton Grove.
16.5 FeetFlooding is either imminent or already occurring in Paradise Park with initial flooding in the St Bernard Street area.
19.5 FeetThe St Bernard Street area in Paradise Park is under several feet of water with below grade floodplain infrastructure several feet deeper. St Augustine Avenue neighborhood in Paradise Park begins to flood. Flooding is imminent or already occurring in the Felton Grove neighborhood. Ground stories, first floors, and garages flooded. Felton Covered Bridge Park begins to flood.
21.76 FeetMajor flooding in the Felton Grove neighborhood occurs at this stage with roadways several feet deep and waters inundating the approaches to the Felton Covered Bridge. Felton Covered Bridge Park begins to experience widespread flooding at shallow depths. The city of Santa Cruz downstream will experience more serious flooding. The flood wave may take 2-3 hours to reach Santa Cruz.
Official 7 Day National Weather Service Forecast   (CAZ512)
Rest of Today: Sunny. Highs in the 50s to lower 60s. North winds 5 to 10 mph.

Tonight: Partly cloudy. Lows in the lower 40s. North winds 5 to 10 mph.

Sunday: Partly cloudy in the morning then becoming mostly cloudy. Highs in the 50s to mid 60s. North winds 5 to 10 mph.

Sunday Night: Mostly cloudy in the evening then becoming partly cloudy. Lows in the mid 40s. North winds 5 to 10 mph.

Monday: Sunny. Highs in the 50s to mid 60s. North winds 5 to 10 mph.

Monday Night: Partly cloudy. Lows in the mid 40s.

Tuesday through Wednesday: Mostly clear. Highs in the lower 50s to mid 60s. Lows in the lower 40s.

Wednesday Night through Friday: Partly cloudy. Lows in the mid 40s. Highs in the 50s to mid 60s.
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 Francisco Bay Area-Monterey 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.