Skip Navigation Link  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left
Navigation Bar End Cap


This probabilistic forecast is issued by the California Nevada River Forecast Center.
tab left off Hydrograph tab right off tab left off River at a Glance tab right off tab left off Download tab right off tab left on tab right on
About this graph
Forecasts for the Humboldt River near Imlay are issued routinely year-round.
Return to Area Map

Upstream Gauge - at Comus Upstream Gauge
Zoom Level:14
Flood Categories (in feet)
Major Flood Stage: 12
Moderate Flood Stage: 11.2
Flood Stage: 10.3
Action Stage: 9.5
Low Stage (in feet): -9999

Historic Crests
(1) 14.58 ft on 05/27/1984
(2) 13.31 ft on 05/09/1952 (P)
(3) 12.76 ft on 06/04/2005 (P)
(4) 12.59 ft on 04/19/2006 (P)
(5) 12.12 ft on 06/17/1983 (P)
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 9.80 ft on 06/17/2023 (P)
(2) 9.06 ft on 05/21/2023 (P)
(3) 9.81 ft on 06/25/2019 (P)
(4) 10.37 ft on 05/29/2017 (P)
(5) 11.12 ft on 04/06/2017 (P)
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
KML Image
Gauge LocationGauge Map Marker
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
11.7 Access to the Flying M Ranch is limited due to water over Old Idaho Stage Road. Flood waters up to a foot deep are possible on Tungsten Road, but the road may remain passable to high clearance, four-wheel drive vehicles.
10.3 Minor flooding of Tungsten Road south of the river between the river and the Pit Taylor Canal. Some minor low land flooding is possible very near the river from the Humboldt County line to Rye Patch. At a higher level access to Flying M Ranch via Old Idaho Stage Road is flooded.

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
Reported historic crest estimates have been normalized using USGS Rating 35.0 (as of 10/23/2023) due to previous channel, location and/or datum changes. For observed crests please go to:
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Reno Weather Forecast Office
2350 Raggio Pkwy
Reno, NV 89512-3900
(775) 673-8100
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:27 PM
Privacy Policy
About Us
Career Opportunities