CNRFC - Hydrology - River Guidance - Graphical RVF

Start of River Group

Location:

MARYS RIVER - ABOVE HOT SPRINGS CREEK (MHSN2)

Latitude: 41.25º N	Longitude: 115.26º W	Elevation: 5504 Feet
Location: Elko County in Nevada		Bulletin Group: Humboldt		River Group: Humboldt

Issuance Time:

Nov 17 2025 at 1:48 PM PST

Next Issuance:

Nov 18 2025 at 9:00 AM PST

Action/Monitor: 5.5 Feet

Minor Flood: 6.0 Feet

Moderate Flood: 7.5 Feet

Major Flood: 9.0 Feet

Plot Type:

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
	Raw streamflow data is provided by the US Geological Survey (USGS). View US Geological Survey (USGS) Data for this station location.

Historical Mean Daily Stage/Flow Data
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2025*	266	4.33	May 14, 2025
2024*	547	5.91	Apr 28, 2024
2023*	849	7.30	May 5, 2023
2022*	179	4.38	May 30, 2022
2021*	91	3.86	May 23, 2021
Historical High Stage/Flow Events (Period of Record - Oct 1943-Sep 1980 and Oct 1981 to Present) - Ranked by Flow
1962*	4,210	7.63	Feb 12, 1962
1984*	2,110	8.39	May 15, 1984
2006*	1,330	7.48	Apr 17, 2006
1952*	1,250	6.57	Apr 29, 1952
1983*	1,040	6.79	May 30, 1983
1943*	1,030	7.20	Jan, 1943**
* Discharge affected to unknown degree by regulation or diversion ** Exact date of occurrence is unknown.

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
9.0 Feet	Major flooding occurs on the Marys River with many homes in Deeth damaged. Transportation and communication are severely disrupted. Major damage to roads, railroads, and structures occurs, with water over a foot deep on some roads and railroads. Severe erosion and sediment deposition occurs. This is similar to the flood of February 12, 1962.
8.4 Feet	Moderate to major flooding occurs on the lower Marys River with significant damage to roads, railroads, and structures. Cattle can be mired or drowned. Much of Deeth's roads and structures are flooded. This is about 1083 cfs or similar to the flood of May 15, 1984.
7.6 Feet	Moderate flooding occurs on lower Marys River, with damage to roads, railroads, and structures. Cattle can be mired or drowned. Streets and homes in Deeth flood. This is about 875 cfs or similar to the flood of may 20, 2005.
6.8 Feet	Minor to moderate lowland flooding occurs on lower Mary's River, with flooding of many rural roads near the river. Some streets in Deeth flood, as well as basements and foundations of a few homes. This is about 691 cfs.
6.0 Feet	Flood stage, about 529 cfs. Minor lowland flooding on lower Marys River, with minor flooding of rural roads throughout area. Some minor flooding of streets in Deeth.
5.0 Feet	This is monitoring stage or about 360 cfs. No flooding occurs within the reach.

Official 7 Day National Weather Service Forecast (NVZ031)

Tonight: Mostly cloudy until early morning then becoming partly cloudy. Lows in the lower 30s. Southeast winds up to 10 mph.

Tuesday: Mostly sunny. Highs 45 to 53. Southeast winds up to 10 mph.

Tuesday Night: Partly cloudy. Lows around 30. East winds up to 10 mph.

Wednesday: Mostly sunny. Highs 45 to 51. Southeast winds up to 10 mph.

Wednesday Night: Partly cloudy. Lows in the upper 20s. Southeast winds up to 10 mph.

Thursday: Partly sunny with a 50 percent chance of rain and snow. Highs 43 to 49.

Thursday Night: Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 20s.

Friday: Partly sunny in the morning then clearing. Highs 42 to 48.

Friday Night: Partly cloudy. Lows in the mid 20s.

Saturday: Mostly sunny. Highs 43 to 49.

Saturday Night: Partly cloudy. Lows in the upper 20s.

Sunday: Mostly sunny. Highs 45 to 51.

Sunday Night: Partly cloudy. Lows in the upper 20s.

Monday: Partly sunny. Chance of snow in the afternoon. Highs 44 to 50. Chance of snow 50 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.

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