Trinity River at Hoopa, CA
River level and flood forecast · Humboldt County
The river is 36.7 ft below flood stage (48 ft).
Forecast to hold near 11.3 ft through Sat, Oct 17, 5 AM.
Flow: 714 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 7:30 AM. Forecasts change as rain falls and as upstream water arrives.
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An email when the National Weather Service forecasts Trinity River at Hoopa to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 56 ft |
| Moderate flood stage | 52 ft |
| Flood stage | 48 ft |
| Action stage | 44 ft |
| Record crest (December 22, 1964) | 57 ft |
What floods at each level
From the National Weather Service, highest first.
- 57 ftSevere flooding of roads, bridges and structures in and around low areas of the river is expected. Many road closures are likely including Highway 96 at several locations between Willow Creek and Weitchpec. Many homes and businesses in valley areas will be innundated.
- 55 ftExtensive and severe flooding between Willow Creek and Weitchpec, and flooding of many homes and businesses in the valley areas. Expect closure of Highway 96 between Willow Creek and Weitchpec.
- 53 ftExtensive flooding of all low lying areas adjacent to the river, including Highway 96 north and south of Hoopa. Significant damage to structures in these areas is likely.
- 51 ftExtensive flooding of all low lying areas adjacent to the river including Highway 96 both north and south of Hoopa is likely. Significant damage to structures in these areas is possible.
- 48 ftConsiderable flooding of low lying areas adjacent to the river including Highway 96 is likely. Significant damage to structures in these areas is possible.
- 46 ftFlooding of many low lying areas near the river is likely. Minor flooding may occur over Highway 96 between Willow Creek and Hoopa.
- 44 ftMinor flooding of the lowest lying areas may occur.
Highest crests on record
- 57 ft — December 22, 1964
- 45.98 ft — January 16, 1974
- 43.16 ft — January 27, 1983
- 42.97 ft — January 1, 1997
- 42.43 ft — February 18, 1986
Recent crests: 30.01 ft (December 21, 2025) · 31.78 ft (February 4, 2025) · 31.02 ft (November 22, 2024) · 31.97 ft (March 15, 2023) · 30.29 ft (December 31, 2022)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (HOOC1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.