CNRFC - Ensemble Products

*** IMPORTANT *** Week of June 16 - Website Data Outage - Due to a major computer upgrade the week of June 16, nearly all data on the CNRFC web site will not be updated. We anticipate the down time to be approximately 4 days. The latest deterministic hydrologic forecasts for official forecast points will continue to be available at the National Water Prediction Service during this time.

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TRINITY RIVER - HOOPA (HOOC1)

Latitude: 41.05º N	Longitude: 123.68º W	Elevation: 333 Feet
Location: Humboldt County in California		Bulletin Group: North Coast		River Group: Klamath

Issuance Time:

Jun 16, 2025 at 6:39 AM PDT

Action/Monitor: 44.0 Feet

Minor Flood: 48.0 Feet

Moderate Flood: 52.0 Feet

Major Flood: 56.0 Feet

Please Note:

Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty.

Threshold Exceedance Plot Product Information

CSV Ensemble Files (Data in kcfs): Forecast Group | HOOC1

Select Threshold to Use: Threshold Value: Threshold Label:

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		Official Forecast (Deterministic)

		Prob. of Threshold Exceedance
		Model Traces

What information is considered in this forecast?

Verification / Historical Plots
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Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

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Flood Impacts
57.0 Feet	Severe 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 Feet	Extensive 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 Feet	Extensive 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 Feet	Extensive 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 Feet	Considerable 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 Feet	Flooding of many low lying areas near the river is likely. Minor flooding may occur over Highway 96 between Willow Creek and Hoopa.
44.0 Feet	Minor flooding of the lowest lying areas may occur.

Official 7 Day National Weather Service Forecast (CAZ105)

Today: Mostly cloudy in the morning then clearing. Highs 68 to 83.

Tonight: Mostly clear. Lows 41 to 51.

Tuesday: Sunny. Highs 74 to 89.

Tuesday Night: Mostly clear. Lows 45 to 55.

Wednesday: Sunny. Highs 75 to 90.

Wednesday Night through Thursday Night: Partly cloudy. Lows 43 to 53. Highs 75 to 90.

Friday: Mostly cloudy in the morning then becoming partly cloudy. Highs 63 to 78.

Friday Night and Saturday: Partly cloudy. Slight chance of rain showers. Lows 40 to 50. Highs 63 to 78.

Saturday Night and Sunday: Partly cloudy. Lows 40 to 50. Highs 70 to 85.

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