Trinity River at Hoopa
California — Water Level & Flood Stage
Located in Humboldt County, California on the Trinity River. Live water level data from USGS gauge 11530000, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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Flood Stages
Major Flood
56 ft
Moderate Flood
52 ft
Minor Flood
48 ft
Action Stage
44 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
57 ft
Severe 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 ft
Extensive 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 ft
Extensive 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 ft
Extensive 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 ft
Considerable flooding of low lying areas adjacent to the river including Highway 96 is likely. Significant damage to structures in these areas is possible.
46 ft
Flooding of many low lying areas near the river is likely. Minor flooding may occur over Highway 96 between Willow Creek and Hoopa.
44 ft
Minor flooding of the lowest lying areas may occur.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Dec 21, 1964 | 57 ft | 230,000 cfs |
| Dec 21, 1964 | 57 ft | 230,000 cfs |
| Dec 21, 1955 | 50.3 ft | 190,000 cfs |
| Dec 21, 1955 | 50.3 ft | 190,000 cfs |
| Jan 15, 1974 | 45.98 ft | 145,000 cfs |
About This Gauge
USGS Site
NWS LID
HOOC1
River
Trinity River
County
Humboldt, CA
Coordinates
41.0498°N, 123.6736°W
Get Flood Alerts for Trinity River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Trinity River at Hoopa?
The Trinity River at Hoopa gauge is maintained by USGS (site 11530000) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Trinity River at Hoopa?
The NWS-defined flood stage for Trinity River at Hoopa is 48 feet. Action stage begins at 44 feet. Moderate flooding starts at 52 feet, and major flooding at 56 feet.
How do I get alerts when Trinity River rises?
Download StormCast free on Google Play, go to River Gauges, and add Trinity River at Hoopa to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Trinity River at Hoopa gauge located?
The gauge is located in Humboldt County, California at coordinates 41.0498°N, 123.6736°W. USGS site number: 11530000. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- Gauge reading affected by reservoir operations.