CNRFC - Hydrology - Observed River/Reservoir Conditions

Start of River Group

MARYS RIVER - ABOVE HOT SPRINGS CREEK (MHSN2)

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

Monitor Stage: 5.5 Feet

Flood Stage: 6.0 Feet

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

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*	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

Official 7 Day National Weather Service Forecast (NVZ031)

Tonight: Partly cloudy early in the evening then becoming mostly cloudy. Lows 23 to 31. Southeast winds up to 10 mph.

Wednesday: Mostly cloudy. A 40 percent chance of rain and snow in the afternoon. Highs 41 to 47. South winds up to 10 mph.

Wednesday Night: Chance of rain and snow in the evening, then rain and snow after midnight. Snow accumulation up to 1 inch. Snow level 6500 feet. Lows in the lower 30s. South winds up to 10 mph. Chance of precipitation 90 percent.

New Years Day: Rain and snow in the morning, then rain likely in the afternoon. Light snow accumulations. Highs 37 to 43. South winds up to 10 mph. Chance of precipitation 90 percent.

Thursday Night: Mostly cloudy with a 50 percent chance of rain. Near steady temperature in the mid 30s. South winds up to 10 mph.

Friday: Partly sunny. Highs 41 to 49.

Friday Night: Mostly cloudy. Lows in the lower 30s.

Saturday: Mostly cloudy with a 50 percent chance of rain and snow. Highs 38 to 46.

Saturday Night: Mostly cloudy with a 50 percent chance of snow and rain. Lows in the upper 20s.

Sunday: Mostly cloudy with a 50 percent chance of snow and rain. Highs 35 to 41.

Sunday Night: Mostly cloudy. Chance of snow and rain in the evening. Lows in the mid 20s. Chance of precipitation 40 percent.

Monday: Mostly cloudy. Chance of snow in the morning, then chance of snow and rain in the afternoon. Highs 36 to 42. Chance of precipitation 40 percent.

Monday Night: Mostly cloudy with a 40 percent chance of snow. Lows in the mid 20s.

Tuesday: Partly sunny. Chance of snow in the morning. Highs 35 to 41. Chance of snow 40 percent.

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.

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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