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| Latitude: 37.04º N | Longitude: 122.07º W | Elevation: 227 Feet | |
| Location: Santa Cruz County in California | River Group: Central Coast | ||
| Monitor Stage: 14.0 Feet | Flood Stage: 16.5 Feet |
| Observed Data Credit | |
 | Raw streamflow data is provided by the US Geological Survey (USGS). |
Historical Stage/Flow Data |
|||
|
Water Year
|
Peak Discharge (cfs)
|
Stage (feet)
|
Date
|
| Most Recent 5 Years | |||
2025 |
6,470 |
15.69 |
Feb 13, 2025 |
2024 |
5,220 |
14.69 |
Feb 4, 2024 |
| 2023 | 20,500 |
24.54 |
Jan 9, 2023 |
| 2022 | 5,600 | 16.06 | Dec 13, 2021 |
2021 |
1,750 | 9.11 | Jan 28, 2021 |
| Historical High Stage/Flow Events (Period of Record - Oct 1936 to Present)* - Ranked by Flow | |||
| 1956 | 30,400 |
22.55** |
Dec 23, 1955 |
1982 |
29,700 |
28.85 |
Jan 5, 1982 |
| 1940 | 24,000 | 21.10** | Feb 27, 1940 |
2023 |
20,500 |
24.54 |
Jan 9, 2023 |
| 1986 | 19,800 | 21.22 | Feb 17, 1986 |
| 1998 | 19,400 | 24.04 | Feb 03, 1998 |
| * 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 |
| Official 7 Day National Weather Service Forecast (CAZ512) |
| rest of Today: Sunny. Highs in the lower 60s to mid 70s. North winds 10 to 20 mph. Tonight: Mostly clear. Lows in the lower 50s. North winds 5 to 10 mph and becoming northeast 10 to 15 mph after midnight. Saturday: Sunny. Highs in the 70s to lower 80s. Northeast winds 5 to 10 mph. Saturday Night: Partly cloudy in the evening then becoming mostly clear. Lows in the 50s. Northwest winds around 5 mph and Becoming northeast after midnight. Sunday: Sunny. Highs in the 70s to lower 80s. Northeast winds around 5 mph and becoming west in the afternoon. Sunday Night: Mostly clear in the evening then becoming partly cloudy. Lows in the lower 50s. Monday through Tuesday: Mostly clear. Highs in the 60s to mid 70s. Lows in the upper 40s. Tuesday Night: Partly cloudy. A chance of rain. Lows in the lower 50s. Wednesday: Mostly cloudy. A chance of rain. Highs in the 50s to upper 60s. Wednesday Night: Partly cloudy in the evening then becoming mostly cloudy. A slight chance of rain. Lows around 50. Thursday: Mostly cloudy in the morning then becoming partly cloudy. A slight chance of rain. Highs in the 50s to upper 60s. |
| Flood Impacts | |
| 21.76 Feet | Major Flooding. At approximately 21.76 feet discharge in the San Lorenzo River is approximately 15,000 cfs. Major 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. At 15,000 cfs, the City of Santa Cruz downstream will experience more serious flooding. The flood wave may take 2-3 hours to reach Santa Cruz. |
| 19.5 Feet | Moderate Flooding. The 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 imminent or already occurring in the Felton Grove neighborhood. Ground stories, first floors, and garages flooded. Felton Covered Bridge Park begins to flood. |
| 16.5 Feet | Minor Flooding. Flooding is either imminent or already occurring in Paradise Park, with initial flooding in the St. Bernard Street area. |
| 14.0 Feet | Monitor Stage. Stage 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. |
| 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. |
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