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:

Sep 21 2023 at 8:12 AM PDT

Next Issuance:

Sep 22 2023 at 9:00 AM PDT

Monitor Stage: 8.0 Feet

Flood Stage: 10.0 Feet

Plot Type:

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)

Today: Partly cloudy with isolated showers in the morning, then mostly cloudy with a slight chance of thunderstorms and isolated showers in the afternoon. Highs 61 to 66. North winds 10 to 15 mph.

Tonight: Partly cloudy with a slight chance of thunderstorms and isolated showers in the evening, then clear after midnight. Lows 34 to 44. Northwest winds around 10 mph in the evening becoming light.

Friday: Sunny. Highs 67 to 72. Light winds.

Friday Night: Clear. Lows 39 to 49. Light winds.

Saturday: Sunny. Highs 73 to 78. Light winds becoming southwest around 10 mph in the afternoon.

Saturday Night: Clear in the evening then becoming partly cloudy. Lows 41 to 51.

Sunday: Partly cloudy in the morning then becoming mostly cloudy. Highs 74 to 79.

Sunday Night: Mostly cloudy in the evening then becoming partly cloudy. Lows 42 to 52.

Monday: Partly cloudy. Highs 74 to 79.

Monday Night and Tuesday: Partly cloudy with a slight chance of showers. Lows 42 to 52. Highs 69 to 74.

Tuesday Night and Wednesday: Clear. Lows 37 to 47. Highs 70 to 75.

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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