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 25 2024 at 7:57 AM PSTNext Issuance: Feb 26 2024 at 9:00 AM PST
Monitor Stage: 44.0 FeetFlood Stage: 48.0 Feet

Please Note: 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.
Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View USGS Data for this station location.

Verification - Historical Graphical RVF
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Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
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
2018*
39,800
26.87
Apr 7, 2018
 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
Impacts - E19 Information
44.0 FeetMinor flooding of the lowest lying areas may occur.
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.
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.
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.
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 likely.
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.
57.0 FeetSevere flooding of roads, bridges and structures in and around low areas of the river. 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 inundated.
Official 7 Day National Weather Service Forecast   (CAZ105)
Tonight: Mostly cloudy. Patchy valley fog in the evening. Chance of rain through the night. Slight chance of snow overnight. Snow may be heavy at times overnight. Snow level 4500 to 5000 feet. Lows 34 to 44. At higher elevation, southwest wind up to 20 mph overnight.

Monday: Rain showers in the morning. Snow showers likely through the day. Chance of rain showers in the afternoon. Snow may be heavy at times in the morning. Snow level 3000 feet falling to 2000 feet in the afternoon. Snow accumulations of 2 to 4 inches. Highs 37 to 52.

Monday Night: Mostly cloudy in the evening then becoming partly cloudy. Slight chance of snow showers in the evening. Snow level 1500 feet in the evening. Lows 25 to 35. At higher elevation, northwest wind up to 25 mph in the evening.

Tuesday: Mostly cloudy. Highs 39 to 54.

Tuesday Night: Mostly cloudy. Slight chance of rain. Snow level 4000 feet overnight. Lows 30 to 40.

Wednesday: Mostly cloudy. Chance of rain. Snow level 4500 to 5000 feet. Highs 45 to 60. South wind around 20 mph.

Wednesday Night: Rain. Lows 35 to 45.

Thursday and Thursday Night: Rain and snow. Highs 38 to 52. Lows 33 to 43.

Friday through Saturday: Rain and snow. Highs 32 to 47. Lows 28 to 38.

Saturday Night and Sunday: Mostly cloudy. Chance of rain and snow. Lows 22 to 32. Highs 35 to 50.
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.