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

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TRINITY RIVER - HOOPA (HOOC1)
Latitude: 41.05º NLongitude: 123.68º WElevation: 333 Feet
Location: Humboldt County in CaliforniaBulletin Group: North CoastRiver Group: Klamath
Issuance Time: Feb 12 2025 at 1:17 PM PSTNext Issuance: Feb 13 2025 at 9:00 AM PST
Action/Monitor: 44.0 FeetMinor Flood: 48.0 FeetModerate Flood: 52.0 FeetMajor Flood: 56.0 Feet

Please Note:
1) 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.

2) At extremely low river flows, the "Observed (Raw Data)" may show readings below the lower end of the available rating table, while the "Observed (Simulated)" will only show values at the bottom of the rating table, creating a potential discrepancy between the two readings.
Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View US Geological Survey (USGS) Data for this station location.

Verification - Historical Graphical RVF
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To view other verification locations, use our Historical Graphical River Forecast Interface.
Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2023*
66,500
32.28
Mar 15, 2023
2022*
16,600
20.91
Jan 8, 2022
2021*
13,300
19.67
Feb 16, 2021
2020*
25,100
23.65
Jan 26, 2020
2019*
88,100
36.31
Feb 27, 2019
 Historical High Stage/Flow Events (Period of Record - Oct 1931 to Present)** - Ranked by Flow
1965*
231,000
57.00
Dec 22, 1964
1956
190,000
36.90
Dec 22, 1955
1974*
145,000
45.98
Jan 16, 1974
1983*
122,000
43.16
Jan 27, 1983
1997*
122,000
42.97
Jan 01, 1997
1986*
116,000
42.43
Feb 18, 1986
 * Discharge affected by regulation or diversion
 ** Most recent continuous record back to Oct 1931 with segmented periods back to Oct 1911
Location Photographs
ESRI™ Locator Map
Flood Impacts
57.0 FeetSevere 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.
55.0 FeetExtensive 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.
53.0 FeetExtensive 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.
51.0 FeetExtensive 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.
48.0 FeetConsiderable flooding of low lying areas adjacent to the river including Highway 96 is likely. Significant damage to structures in these areas is possible.
46.0 FeetFlooding of many low lying areas near the river is likely. Minor flooding may occur over Highway 96 between Willow Creek and Hoopa.
44.0 FeetMinor flooding of the lowest lying areas may occur.
Official 7 Day National Weather Service Forecast   (CAZ105)
Tonight: Chance of rain and snow in the evening, then rain and snow overnight. Windy. Snow level 2000 to 2500 feet. Snow accumulations of 1 to 3 inches. Lows 31 to 41. In the valleys, southeast wind up to 20 mph overnight. At higher elevation, southeast wind 20 to 25 mph.

Thursday: Rain and snow. Snow may be heavy at times. Snow level 4500 to 5000 feet. Snow accumulations of 3 to 5 inches. Highs 39 to 53. South wind around 20 mph.

Thursday Night: Rain and snow. Snow may be heavy at times. Snow level 4000 to 4500 feet. Snow accumulations of 5 to 7 inches. Lows 32 to 42.

Friday: Mostly cloudy. Chance of rain and snow. Snow level 3000 feet. Highs 36 to 50.

Friday Night: Partly cloudy. Slight chance of rain and snow. Snow level 2500 to 3000 feet. Lows 27 to 37.

Saturday: Mostly cloudy. Highs 43 to 56.

Saturday Night: Cloudy. Rain and snow. Lows 35 to 45.

Sunday: Rain. Highs 41 to 56.

Sunday Night: Rain and snow. Lows 36 to 46.

Washingtons Birthday: Mostly cloudy. Chance of rain and snow. Highs 40 to 55.

Monday Night through Wednesday: Mostly cloudy. Chance of rain. Lows 34 to 44. Highs 44 to 59.
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.