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| Latitude: 40.49º N | Longitude: 124.1º W | Elevation: 36 Feet | |
| Location: Humboldt County in California | River Group: North Coast | ||
| Monitor Stage: 45.0 Feet | Flood Stage: 51.0 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 |
174,000 | 41.84 |
Nov 22, 2024 |
2024 |
105,000 |
33.12 |
Jan 14, 2024 |
2023 |
165,000 |
40.89 |
Mar 15, 2023 |
2022 |
68,900 |
27.64 |
Oct 25, 2021 |
2021 |
30,100 |
19.80 |
Feb 2, 2021 |
| Historical High Stage/Flow Events (Period of Record - Oct 1916 to Present)* - Ranked by Flow | |||
1965 |
752,000 |
72.00 |
Dec 23, 1964 |
1956 |
541,000 |
61.90 |
Dec 22, 1955
|
1974 |
387,000 |
52.31 |
Jan 16, 1974 |
| 1995 | 368,000 | 51.30 | Jan 9, 1995 |
| 1986 | 364,000 | 51.08 | Feb 17, 1986 |
| 1997 | 360,000 | 54.97 | Jan 1, 1997 |
| Location Photographs | ||
| ESRI™ Locator Map |
| Official 7 Day National Weather Service Forecast (CAZ103) |
| Today: Cloudy. Slight chance of drizzle in the morning. Highs 54 to 64. Northwest wind 5 to 15 mph. Tonight: Cloudy. Slight chance of drizzle in the evening. Lows 44 to 54. Northwest wind up to 10 mph. Saturday: Mostly cloudy. Slight chance of rain showers in the morning, then chance of rain showers in the afternoon. Highs 55 to 65. Northwest wind around 10 mph. Saturday Night: Mostly cloudy. Patchy fog. Chance of rain showers. Lows 43 to 53. Northwest wind around 10 mph. Sunday: Mostly cloudy. Patchy fog. Chance of rain showers and slight chance of thunderstorms. Highs 59 to 69. Southwest wind around 5 mph. Sunday Night: Patchy fog. Rain showers likely and slight chance of thunderstorms. Lows 45 to 55. Monday: Mostly cloudy. Patchy fog. Chance of rain showers. Highs 55 to 65. Monday Night: Mostly cloudy. Patchy fog. Chance of rain. Lows 44 to 54. Tuesday: Mostly cloudy. Areas of fog. Slight chance of rain. Highs 58 to 68. Tuesday Night: Mostly cloudy in the evening then becoming partly cloudy. Areas of fog. Lows 44 to 54. Wednesday through Thursday: Mostly cloudy. Patchy fog. Highs 60 to 71. Lows 44 to 54. |
| Flood Impacts | |
| 74.0 Feet | Extensive and severe flooding throughout the river valley with major damage to roads, bridges and structures. There will be numerous road closures including the Avenue of the Giants (Highway 254) and US Highway 101. |
| 72.0 Feet | Extensive and severe flooding of all areas adjacent to the river is expected with possible damage to roads, bridges and other structures. Expect many road closures including the Avenue of the Giants (Highway 254) and possibly US Highway 101. |
| 67.0 Feet | Expect significant flooding in all areas near the river with numerous road closures, including the Avenue of the Giants (Highway 254). |
| 62.0 Feet | Flooding of many low lying areas near the river is likely. Numerous closures along the Avenue of the Giants (Highway 254). |
| 55.0 Feet | Flooding of low lying areas near Shively is likely, along with possible closure of portions of the Avenue of the Giants (Highway 254). |
| 52.0 Feet | Minor flooding in the Shively area is possible. |
| 50.0 Feet | Flooding of the River's Edge RV Park in Rio Dell is likely. Occupants of the park will need to move their vehicles to higher ground. |
| 48.0 Feet | Flooding of the River's Edge RV Park in Rio Dell is expected. Occupants of the park may need to move their vehicles to higher ground. |
| 46.0 Feet | Minor flooding is possible in the northern portion of the River's Edge RV Park in Rio Dell. Occupants of the park need to be ready to move their vehicles to higher ground. |
| 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 Eureka 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. |