CNRFC - Hydrology - Observed River/Reservoir Conditions

CARSON RIVER - CARSON CITY (STWN2)

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

Monitor Stage: 8.0 Feet

Flood Stage: 10.0 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
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
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
2017*	10,500	11.98	Feb 11, 2017
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

Official 7 Day National Weather Service Forecast (NVZ003)

Today: Mostly cloudy. Highs 44 to 49. Light winds becoming south around 10 mph in the afternoon.

Tonight: Scattered showers in the evening, then rain and snow after midnight. Snow level 6000 feet. Snow accumulation of 1 to 4 inches. Lows 30 to 35. South winds 10 to 15 mph increasing to 15 to 25 mph after midnight. Gusts up to 45 mph.

Sunday: Mostly cloudy with scattered snow showers. Snow accumulation up to 2 inches. Highs 39 to 44. Southwest winds 15 to 25 mph with gusts up to 45 mph.

Sunday Night: Mostly cloudy in the evening then becoming partly cloudy. Lows 18 to 28. West winds 10 to 15 mph. Gusts up to 35 mph in the evening.

Monday: Partly cloudy in the morning then clearing. Highs 36 to 41. Northwest winds 10 to 15 mph.

Monday Night: Clear. Lows 16 to 26.

Tuesday and Tuesday Night: Partly cloudy. Highs 42 to 47. Lows 20 to 30.

Wednesday through Thursday: Clear. Highs 46 to 51. Lows 17 to 27.

Thursday Night and Friday: Partly cloudy. Lows 23 to 28. Highs 45 to 50.

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.

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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