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: Nov 29 2023 at 7:23 AM PSTNext Issuance: Nov 29 2023 at 3:00 PM 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.
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)
Today: Partly cloudy early in the morning then clearing. Highs 50 to 65.

Tonight: Partly cloudy in the evening then becoming mostly cloudy. Rain showers and snow showers overnight. Snow level 4500 feet. Lows 34 to 44.

Thursday: Rain and snow in the morning, then rain showers and snow showers in the afternoon. Snow level 3500 to 4000 feet. Snow accumulations of 1 to 3 inches. Highs 40 to 55.

Thursday Night: Mostly cloudy. Chance of rain showers and snow showers. Snow level 3000 to 3500 feet. Lows 32 to 42.

Friday: Rain showers. Snow level 3500 feet rising to 4500 feet in the afternoon. Highs 41 to 56.

Friday Night and Saturday: Rain showers. Lows 36 to 46. Highs 44 to 59.

Saturday Night and Sunday: Rain. Lows 38 to 48. Highs 46 to 61.

Sunday Night: Rain likely. Lows 41 to 51.

Monday: Mostly cloudy. Rain likely. Highs 49 to 64.

Monday Night and Tuesday: Mostly cloudy. Chance of rain showers. Lows 40 to 50. Highs 52 to 67.
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.