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
Action/Monitor: 44.0 FeetMinor Flood: 48.0 FeetModerate Flood: 52.0 FeetMajor Flood: 56.0 Feet

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.

Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2024*
46,500
28.44
Jan 14, 2024
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
 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: Mostly cloudy. Slight chance of rain showers in the evening. Patchy valley fog overnight. Snow level 5000 feet. Lows 35 to 45.

Tuesday: Partly cloudy. Patchy valley fog in the morning. Highs 56 to 71.

Tuesday Night: Mostly cloudy. Lows 37 to 47.

Wednesday: Partly cloudy. Highs 60 to 75.

Wednesday Night and Thursday: Partly cloudy. Lows 38 to 48. Highs 65 to 80.

Thursday Night: Mostly cloudy. Lows 40 to 50.

Friday: Partly cloudy. Highs 65 to 80.

Friday Night: Mostly cloudy. Lows 41 to 51.

Saturday: Mostly cloudy. Slight chance of rain showers. Highs 57 to 72.

Saturday Night: Mostly cloudy. Lows 38 to 48.

Sunday: Partly cloudy. Highs 61 to 76.

Sunday Night and Monday: Mostly clear. Lows 38 to 48. Highs 67 to 82.
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.