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HUMBOLDT RIVER - COMUS (CMSN2)

Latitude: 40.99º N	Longitude: 117.32º W	Elevation: 4360 Feet
Location: Humboldt County in Nevada		Bulletin Group: Humboldt		River Group: Humboldt

Issuance Time:

Jun 22, 2025 at 9:09 AM PDT

Action/Monitor: 8.5 Feet

Minor Flood: 9.5 Feet

Moderate Flood: 10.5 Feet

Major Flood: 11.5 Feet

Please Note:

Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty.

Threshold Exceedance Plot Product Information

CSV Ensemble Files (Data in kcfs): Forecast Group | CMSN2

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		Official Forecast (Deterministic)

		Prob. of Threshold Exceedance
		Model Traces

What information is considered in this forecast?

Verification / Historical Plots
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Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
12.5 Feet	Near 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 Feet	Major 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 Feet	Major 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 Feet	Moderate 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 Feet	Moderate 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 Feet	Minor 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 Feet	Minor Flood Stage. Minor lowland flooding throughout the reach. No flooding in Winnemucca.
9.0 Feet	Very minor lowland flooding along the reach. No flooding in Winnemucca.
8.5 Feet	Monitoring Stage. Some very minor flooding occurs at scattered locations along the reach. No flooding occurs in Winnemucca.
8.0 Feet	No flooding in the reach.
7.5 Feet	No flooding in the reach.
7.0 Feet	No flooding in the reach.

Official 7 Day National Weather Service Forecast (NVZ030)

Today: Warmer, sunny. Highs 68 to 78. Northeast winds up to 10 mph.

Tonight: Mostly clear. Lows 45 to 51. Northeast winds up to 10 mph.

Tuesday: Warmer, sunny. Highs 74 to 84. Northeast winds up to 10 mph shifting to the southwest in the afternoon.

Tuesday Night: Partly cloudy. Lows 50 to 56. West winds up to 10 mph shifting to the east after midnight.

Wednesday: Sunny. Highs 79 to 89. Southwest winds up to 5 mph increasing to 5 to 15 mph in the afternoon.

Wednesday Night: Mostly clear. Lows 51 to 57.

Thursday: Sunny. Highs 78 to 88.

Thursday Night: Partly cloudy. Lows 52 to 58.

Friday: Sunny. Highs 80 to 90.

Friday Night: Mostly clear. Lows 54 to 60.

Saturday: Sunny. Highs 82 to 92.

Saturday Night: Mostly clear. Lows 55 to 61.

Sunday: Sunny. Highs 87 to 97.

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