Mattole River near Petrolia, CA
River level and flood forecast · Humboldt County
Normal11.0 ftas of Mon 7:30 PM
Forecast to hold near 11.0 ft through Sat, Oct 17, 5 AM.
Flow: 13 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 7:30 AM. Forecasts change as rain falls and as upstream water arrives.
Highest crests on record
- 29.6 ft — December 22, 1955
- 27.96 ft — February 25, 2019
- 27.86 ft — December 22, 1964
- 27.85 ft — December 28, 2005
- 27.09 ft — December 21, 2025
Recent crests: 27.09 ft (December 21, 2025) · 24.77 ft (November 22, 2024) · 23.65 ft (January 13, 2024) · 25.2 ft (March 14, 2023) · 22.17 ft (December 30, 2022)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (MTOC1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.