National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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HUMBOLDT RIVER - COMUS (CMSN2)
Latitude: 40.99º NLongitude: 117.32º WElevation: 4360 Feet
Location: Humboldt County in NevadaBulletin Group: HumboldtRiver Group: Humboldt
Issuance Time: Dec 27 2025 at 9:38 AM PSTNext Issuance: Dec 28 2025 at 9:00 AM PST
Action/Monitor: 8.5 FeetMinor Flood: 9.5 FeetModerate Flood: 10.5 FeetMajor Flood: 11.5 Feet

Please Note:
1) Each individual timeseries plotted on the graphical river forecast can be toggled on and off by clicking the legend entry above. If the "Observed (Raw Data)" contains bad data and is toggled off, the plot will scale to the remaining timeseries.

2) At extremely low river flows, the "Observed (Raw Data)" may show readings below the lower end of the available rating table, while the "Observed (Simulated)" will only show values at the bottom of the rating table, creating a potential discrepancy between the two readings.
Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View US Geological Survey (USGS) Data for this station location.

Verification - Historical Graphical RVF
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Historical Stage/Flow Data
Note: Water Year 2025 is currently showing peak daily mean values. These will be updated to instantaneous peaks in the coming months.
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2025* 617 5.45 Jun 08, 2025
2024* 2,310 10.19 May 5, 2024
2023* 3,240 11.11 Jun 3, 2023
2022* 164 3.25 Jun 20, 2022
2021* 279 3.96 Jun 10, 2021
 Historical High Stage/Flow Events (Period of Record - April 1895** to Present) - Ranked by Flow
1984* 9,900 12.25 Apr 24, 1984
2006* 6,070 11.78 Apr 16, 2006
1952* 5,860 11.52 May 6, 1952
1983* 5,210 11.76 Jun 14, 1983
2017* 4,960 11.29 Mar 31, 2017
2005* 4,710 11.44 May 28, 2005
 * Discharge affected to unknown degree by regulation or diversion
 ** Missing records from 1927 to 1945
Location Photographs
ESRI™ Locator Map
Flood Impacts
12.5 FeetNear record to record flooding in Humboldt County. Most secondary roads near the river, bridges over some primary roads, long stretches of rail and many ranch buildings flood. The river is 2-5 miles wide through Humboldt County. Winnemucca is flooded between the UPRR on the west and Second Street on the east. The U.S. Highway 95 bridge in Winnemucca may be affected. Many homes and businesses flood in Winnemucca. Large losses of livestock in the area. Similar to the record flood of April 1984.
12.0 FeetMajor flooding, including in Winnemucca. All secondary roads, stretches of rail and some ranch buildings near the river flood. The river is 2-4 miles wide through Humboldt county. Lower parts of Winnemucca flood between the UPPR and Golconda Street on the west and Second Street on the east, but not including Interstate 80. Approximately a dozen homes and several businesses are affected. Large losses of livestock in the area. Greater than the flood of 1952 but not as severe as the record flood of 1984.
11.5 FeetMajor Flood Stage. Major flooding throughout the reach, except moderate flooding in lower portions of Winnemucca. Many rural roads near the river are flooded. Main area impacted is between the Union Pacific Railroad and Golconda Street on the west and Second Street on the east, but not including Interstate 80. Homes and basements begin to experience flooding. This would be similar to the floods of June 1983 and April 2017.
11.0 FeetModerate to major lowland flooding throughout the reach. Many rural roads near the river are flooded. Minor to moderate flooding occurs in lower portions of Winnemucca. Main area impacted is between the Union Pacific Railroad and Golconda Street on the west and Second Street on the east, beneath Interstate 80. This would be similar to flooding in February 2017 and early June 2023.
10.5 FeetModerate Flood Stage. Moderate lowland flooding throughout the reach, with some rural roads flooded. Minor flooding in the lower parts of Winnemucca with storm drain backups along First and Second Streets. Main area impacted is between the Union Pacific Railroad and Second street beneath Interstate 80. Property damage in Winnemucca is minimal.
10.0 FeetMinor to moderate lowland flooding throughout the reach. Some rural roads near the river begin to flood. Very minor flooding begins in Winnemucca with storm drain backups along First Street, and the lowest parts of town begin to flood.
9.5 FeetMinor Flood Stage. Minor lowland flooding throughout the reach. No flooding in Winnemucca.
9.0 FeetVery minor lowland flooding along the reach. No flooding in Winnemucca.
8.5 FeetMonitoring Stage. Some very minor flooding occurs at scattered locations along the reach. No flooding occurs in Winnemucca.
8.0 FeetNo flooding in the reach.
7.5 FeetNo flooding in the reach.
7.0 FeetNo flooding in the reach.
Official 7 Day National Weather Service Forecast   (NVZ030)
Today: Partly sunny early in the morning then clearing. Highs 31 to 39. Northeast winds up to 10 mph.

Tonight: Mostly clear. Lows 17 to 23. Northeast winds up to 5 mph.

Monday: Sunny. Highs 35 to 41. Southeast winds up to 5 mph.

Monday Night: Mostly clear. Lows 18 to 26. East winds up to 5 mph.

Tuesday: Sunny. Highs 39 to 45. Southeast winds up to 5 mph.

Tuesday Night: Mostly clear. Lows 19 to 29.

Wednesday: Mostly sunny. Highs 42 to 48.

Wednesday Night: Mostly cloudy. Lows 23 to 31.

New Years Day: Partly sunny. Highs 42 to 48.

Thursday Night: Mostly cloudy. Scattered rain showers in the evening, then scattered rain showers and snow showers after midnight. Lows 26 to 32. Chance of precipitation 50 percent.

Friday: Mostly cloudy with scattered rain showers and snow showers. Highs 41 to 49. Chance of precipitation 50 percent.

Friday Night: Mostly cloudy with scattered rain showers and snow showers. Lows in the upper 20s. Chance of precipitation 50 percent.

Saturday: Partly sunny. Scattered rain showers and snow showers in the morning. Highs 39 to 47. Chance of precipitation 40 percent.
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 Elko 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.