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 CaliforniaRiver Group: North Coast
Monitor Stage: 44.0 FeetFlood Stage: 48.0 Feet


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.

Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
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
2017*
83,600
35.55
Feb 9, 2017
 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
Official 7 Day National Weather Service Forecast   (CAZ105)
Today: Mostly sunny. Patchy drizzle and valley fog in the morning. Patchy smoke through the day. Highs 84 to 99.

Tonight: Partly cloudy. Patchy smoke through the night. Patchy valley fog overnight. Lows 53 to 63.

Saturday: Sunny. Patchy valley fog in the morning. Patchy smoke through the day. Highs 80 to 95.

Saturday Night: Mostly clear. Patchy smoke. Lows 54 to 64.

Sunday: Mostly sunny. Highs 81 to 96.

Sunday Night and Monday: Partly cloudy. Patchy valley fog. Lows 52 to 62. Highs 81 to 96.

Monday Night: Partly cloudy. Lows 53 to 63.

Tuesday through Thursday: Mostly clear. Highs 86 to 101. Lows 55 to 65.
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.
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.