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

*** 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.
 |  End of River Group

HUMBOLDT RIVER - COMUS (CMSN2)
Latitude: 40.99º NLongitude: 117.32º WElevation: 4360 Feet
Location: Humboldt County in NevadaBulletin Group: HumboldtRiver Group: Humboldt
Issuance Time: Jun 20 2025 at 11:24 AM PDTNext Issuance: Jun 21 2025 at 9:00 AM PDT
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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To view other verification locations, use our Historical Graphical River Forecast Interface.
Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
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
2020*
364
4.61
Jun 6, 2020
 Historical High Stage/Flow Events (Period of Record - April 1895** to Present) - Ranked by Flow
1984*
9,900
12.25
Apr 24, 1984
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
1969*
3,910
10.64
Apr 18, 1969
 * 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)
Tonight: Windy, colder. Mostly cloudy. Patchy blowing dust in the evening. Isolated rain showers after midnight. Lows 36 to 42. Northwest winds 15 to 30 mph with gusts to around 45 mph decreasing to 10 to 15 mph with gusts to around 35 mph after midnight. Chance of showers 20 percent.

Saturday: Partly sunny. Scattered rain showers and snow showers in the morning, then isolated rain showers and snow showers in the afternoon. Highs 52 to 62. Northwest winds 10 to 15 mph with gusts to around 30 mph. Chance of precipitation 50 percent.

Saturday Night: Partly cloudy in the evening then becoming mostly cloudy. Lows 36 to 42. Northwest winds 5 to 15 mph. Gusts up to 30 mph in the evening.

Sunday: Warmer. Mostly sunny. Highs 59 to 69. North winds up to 10 mph.

Sunday Night: Mostly clear. Lows 39 to 45. North winds 5 to 15 mph.

Monday: Warmer, sunny. Highs 69 to 79.

Monday Night: Partly cloudy. Lows 46 to 52.

Tuesday: Warmer, sunny. Highs 75 to 85.

Tuesday Night: Mostly clear. Lows 50 to 56.

Wednesday: Sunny. Highs 80 to 90.

Wednesday Night: Mostly clear. Lows 53 to 59.

Thursday: Sunny. Highs 83 to 93.

Thursday Night: Mostly clear. Lows 54 to 60.

Friday: Sunny. Highs 83 to 93.
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.