CNRFC - Hydrology - River Guidance - Graphical RVF

Location:

CARSON RIVER - CARSON CITY (STWN2)

Latitude: 39.11º N	Longitude: 119.71º W	Elevation: 4620 Feet
Location: Carson City County in Nevada		Bulletin Group: Eastern Sierra		River Group: Eastern Sierra

Issuance Time:

Dec 04 2023 at 1:26 PM PST

Next Issuance:

Dec 05 2023 at 9:00 AM PST

Monitor Stage: 8.0 Feet

Flood Stage: 10.0 Feet

Plot Type:

Please Note: 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.

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
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2022*	2,630	5.86	Oct 25, 2021
2021*	506	3.51	May 7, 2021
2020*	1,410	4.19	Apr 30, 2020
2019*	3,880	7.02	Feb 15, 2019
2018*	4,900	7.82	Apr 9, 2018
Historical High Stage/Flow Events (Period of Record - May 1939 to Present) - Ranked by Flow
1997*	30,500	18.43	Jan 3, 1997
1956*	30,000	15.00**	Dec 24, 1955
1963*	21,900	13.11**	Feb 1, 1963
1951*	15,500	11.40**	Nov 22, 1950
1986*	13,200	13.16	Feb 18, 1986
* Discharge affected by regulation or diversion
** Old Datum. The difference is +1.0 ft and must be applied to data to convert to new datum.

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Impacts - E19 Information
8.0 Feet	Flood threat and localized overbank flow begin in lowest areas.
8.5 Feet	Minimal lowland flooding through reach.
9.0 Feet	Minor lowland flooding through reach in lower flood prone areas.
9.5 Feet	Minor flood impacts in lower portions of reach.
10.0 Feet	Flood Stage - Minor to moderate flooding, several homes begin to have flood problems in Genoa, Carson Valley, Stewart, and Dayton. Minor to moderate damage to agriculture.
10.5 Feet	Moderate flooding through reach. Damage to roads, bridges, crops, irrigation systems, and buildings in lower areas. Transportation begins to be affected.
11.0 Feet	Major flooding. Many roads and highways flooded. Transportation becoming difficult, US Highway 395 closes. Massive bank erosion with the ability to wash away buildings, cars, and roads. River channel begins to move around laterally.
12.0 Feet	Extensive flooding with major damage. Most roads in valley areas flood making transportation difficult. Massive erosion with large agricultural losses, cattle drownings.
13.5 Feet	Flood disaster throughout reach. Transportation very difficult. Large number of structures affected, infrastructure damage (roads, bridges, power, and water).
15.0 Feet	Major flood disaster with widespread destruction throughout reach from Genoa to Weeks. Transportation extremely difficult.
16.0 Feet	Near record flooding with massive destruction throughout reach. Most towns isolated, transporation nearly impossible.
17.0 Feet	Record flooding. All towns cut off, bridges and roads destroyed.
19.0 Feet	Incredible flood with damage previously unknown from Carson Valley to Fort Churchill, including Empire and Dayton areas. USGS estimated 100 year flood.

Official 7 Day National Weather Service Forecast (NVZ003)

Tonight: Clear. Lows 31 to 36. East winds around 10 mph in the evening becoming light.

Tuesday: Partly cloudy. Highs 53 to 63. Light winds becoming east around 10 mph in the afternoon.

Tuesday Night: Partly cloudy in the evening then becoming mostly cloudy. Lows 34 to 39. South winds 10 to 15 mph.

Wednesday: Partly cloudy in the morning, then mostly cloudy with a chance of rain in the afternoon. Highs 56 to 61. South winds around 10 mph increasing to southwest 15 to 25 mph with gusts up to 45 mph in the afternoon.

Wednesday Night: Mostly cloudy in the evening then becoming partly cloudy. Chance of rain and snow. Snow level 6000 to 6500 feet. Lows 29 to 34. Southwest winds 15 to 25 mph decreasing to 10 to 15 mph after midnight. Gusts up to 45 mph.

Thursday: Partly cloudy with a slight chance of snow in the morning, then mostly cloudy with a chance of snow and rain in the afternoon. Highs 44 to 49.

Thursday Night: Mostly cloudy with a chance of snow and rain in the evening, then partly cloudy with a slight chance of snow after midnight. Lows 16 to 26.

Friday: Sunny. Highs 38 to 43.

Friday Night and Saturday: Partly cloudy. Lows 19 to 24. Highs 43 to 53.

Saturday Night: Mostly cloudy. Slight chance of rain and snow in the evening. Lows 28 to 33.

Sunday and Sunday Night: Mostly cloudy. Highs 46 to 56. Lows 27 to 32.

Monday: Mostly cloudy in the morning then becoming partly cloudy. Highs 46 to 56.

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 Reno 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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Verification - Historical Graphical RVF
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