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:

Jul 14 2025 at 8:30 AM PDT

Next Issuance:

Jul 15 2025 at 9:00 AM PDT

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 Stage/Flow Data
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
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
2020*	329	5.24	May 4, 2020
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	3.24	Apr 17, 2006
1952*	1,250	6.57	Apr 29, 1952
* Discharge affected to unknown degree by regulation or diversion

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 2060 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 1230 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 800 cfs.
6.0 Feet	Flood stage, about 580 cfs. Minor lowland flooding on lower mary's 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 365 cfs. No flooding occurs within the reach.

Official 7 Day National Weather Service Forecast (NVZ031)

Today: Sunny. Isolated dry thunderstorms in the afternoon. Highs 87 to 95. Northwest winds up to 10 mph increasing to 10 to 15 mph in the afternoon.

Tonight: Partly cloudy. Isolated dry thunderstorms in the evening. Lows 58 to 64. North winds 5 to 15 mph shifting to the east after midnight.

Tuesday: Mostly sunny. Scattered rain showers in the afternoon. Highs 85 to 95. South winds up to 10 mph increasing to west 10 to 20 mph in the afternoon. Chance of showers 50 percent.

Tuesday Night: Cooler. Mostly clear. Lows 51 to 57. North winds 5 to 15 mph. Gusts up to 30 mph in the evening.

Wednesday: Sunny. Highs 81 to 91. Northwest winds up to 15 mph.

Wednesday Night: Mostly clear. Lows 53 to 59.

Thursday: Sunny. Highs 85 to 93.

Thursday Night: Partly cloudy. Lows in the upper 50s.

Friday: Sunny. Highs 85 to 93.

Friday Night: Partly cloudy. Lows in the upper 50s.

Saturday: Sunny. Highs 85 to 93.

Saturday Night: Mostly clear. Lows in the upper 50s.

Sunday: Sunny. Highs 85 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.

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