Station Name: TRINITY R AB NF TRINITY R NR HELENA CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 1,404 feet

Nearest Address:
State Rte 299
Helena, CA 96052
Trinity County

GPS Coordinates: 40.76653148, -123.1144757

Nearby Water Temperatures

Flood Watch issued February 23 at 10:26AM PST until February 24 at 10:00PM PST by NWS Eureka CA

Effective: Mon February 23, 2026, 10:26 AM
Expires: Tue February 24, 2026, 10:30 AM

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northwest California, including the following areas, Del Norte County, Humboldt County, Trinity County, Mendocino Coast and Northern Mendocino County. * WHEN...From 10 PM PST this evening through Tuesday evening. * IMPACTS...There will be an increased risk of rock and land slides along roadways. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - A prolonged duration of moderate to heavy rain is expected through Tuesday night. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

Wind Advisory issued February 23 at 10:22AM PST until February 24 at 1:00AM PST by NWS Eureka CA

Effective: Mon February 23, 2026, 10:22 AM
Expires: Mon February 23, 2026, 6:30 PM

* WHAT...South winds 25 to 40 mph with gusts up to 60 mph expected. * WHERE...Southern Humboldt, coastal headland and exposed ridges. * WHEN...From 7 PM this evening to 1 AM PST Tuesday. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

Wind Advisory issued February 23 at 10:22AM PST until February 24 at 4:00AM PST by NWS Eureka CA

Effective: Mon February 23, 2026, 10:22 AM
Expires: Mon February 23, 2026, 6:30 PM

* WHAT...South winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Del Norte Coast, and Northern Humboldt Interior. * WHEN...From 10 PM this evening to 4 AM PST Tuesday. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. There is an increased risk of tree branches and other debris on roadways. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects.

Coastal Flood Advisory issued February 23 at 12:10PM PST until February 24 at 5:00AM PST by NWS Eureka CA

Effective: Mon February 23, 2026, 12:10 PM
Expires: Mon February 23, 2026, 8:15 PM

* WHAT...High astronomical tides will cause minor flooding in low lying areas around Humboldt Bay. Up to half foot of saltwater inundation above ground level is possible near shorelines and tidal waterways. Between 8.7 and 8.9 feet MLLW at the North Spit tide gauge is predicted. * WHERE...Northern Humboldt Coast County. * WHEN...From 3 AM to 5 AM PST Tuesday. High tide is at 4:10 AM at the Humboldt Bay North Spit tide gauge. Saltwater inundation will be possible 1 to 2 hours before and after high tide. * IMPACTS...Flooding of low lying areas around Humboldt Bay including parks and roads with only isolated closures expected. Flooding will likely impact Jackson Ranch Road in the Arcata Bottoms and several roads in King Salmon.

A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore. Feet Above Ground is locally defined as feet above the Highest Astronomical Tide or HAT.

Coastal Flood Advisory issued February 23 at 7:50PM PST until February 24 at 5:00AM PST by NWS Eureka CA

Effective: Mon February 23, 2026, 7:50 PM
Expires: Tue February 24, 2026, 5:00 AM

* WHAT...High astronomical tides will cause minor flooding in low lying areas around Humboldt Bay. Up to half foot of saltwater inundation above ground level is possible near shorelines and tidal waterways. Between 8.7 and 8.9 feet MLLW at the North Spit tide gauge is predicted. * WHERE...Northern Humboldt Coast County. * WHEN...From 3 AM to 5 AM PST Tuesday. High tide is at 4:10 AM at the Humboldt Bay North Spit tide gauge. Saltwater inundation will be possible 1 to 2 hours before and after high tide. * IMPACTS...Flooding of low lying areas around Humboldt Bay including parks and roads with only isolated closures expected. Flooding will likely impact Jackson Ranch Road in the Arcata Bottoms and several roads in King Salmon.

A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore. Feet Above Ground is locally defined as feet above the Highest Astronomical Tide or HAT.