CNRFC - Hydrology - River Guidance - Graphical RVF

EAST FORK CARSON RIVER - MARKLEEVILLE (CEMC1)

Latitude: 38.71º N	Longitude: 119.76º W	Elevation: 5400 Feet
Location: Alpine County in California		River Group: Eastern Sierra

Issuance Time:

Oct 23 2018 at 7:07 AM PDT

Next Issuance:

Oct 24 2018 at 9:00 AM PDT

Monitor Stage: 6.0 Feet

Flood Stage: 8.0 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
2017	11,700	9.98	Jan 8, 2017
2016	1,890	5.25	May 14, 2016
2015	1,580	4.66	Feb 9, 2015
2014	852	4.00	Apr 19, 2014
2013	1,670	4.88	Dec 2, 2012
Historical High Stage/Flow Events (Period of Record - Sept 1960 to Present)
1997	18,900	11.78*	Jan 24, 1970
1963	15,100	10.52*	Jan 31, 1963
2017	11,700	9.98	Jan 8, 2017
2006	10,300	9.09*	Dec 31, 2005
1986	9,520	8.79*	Mar 8, 1986
1965	9,100	8.65*	Dec 23, 1964

* Measured stage converted. Crest calculated using shift-adjusted USGS Rating Number 19.

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (CAZ072)

Today: Sunny. Highs 57 to 67. Light winds becoming west around 10 mph in the afternoon.

Tonight: Clear in the evening then becoming partly cloudy. Lows 23 to 33. Southwest winds around 10 mph in the evening becoming light.

Wednesday: Sunny. Highs 58 to 68. Light winds becoming southwest around 10 mph in the afternoon.

Wednesday Night: Partly cloudy in the evening then clearing. Lows 25 to 35. West winds 10 to 15 mph in the evening becoming light.

Thursday: Sunny. Highs 62 to 67. Light winds.

Thursday Night: Clear. Lows 27 to 37.

Friday through Saturday Night: Clear. Highs 66 to 76. Lows 29 to 39.

Sunday through Monday: Clear. Highs 59 to 69. Lows 28 to 38.

Impacts - E19 Information
5.5 Feet	No flooding on the East Fork Carson River. At about 2450 cfs, USGS estimates that this much flow has about a 1 in 2 chance of occurring any year.
6.0 Feet	Monitor Stage. No flooding. Residents along the river should prepare for flooding if additional rises due to snowmelt and/or rainfall runoff occur. Flood prone areas in Carson Valley include Washoe Indian Reservation, Carson Valley Country Club, Glenwood Dr, Riverview Dr, Centerville Rd, NV Hwy 88, Westwood Village, Rocky Slough, Dresslerville Rd, Waterloo Ln, and Mottsville Ln. At about 3200 cfs, USGS estimates that this much flow has about a 1 in 3 chance of occurring any year.
6.5 Feet	Channel capacity of East Fork Carson River in Carson Valley. Flood preparedness efforts should begin if additional rises due to snowmelt and/or rainfall runoff occur. Flood prone areas in Carson Valley are Washoe Indian Reservation, Carson Valley Country Club, Glenwood Dr, Riverview Dr, Centerville Rd, NV Hwy 88, Westwood Village, Rocky Slough, Dresslerville Rd, Waterloo Ln, and Mottsville Ln. At about 4000 cfs, USGS estimates that this much flow has about a 1 in 4 chance of occuring any year.
7.0 Feet	Lowest portions of Carson Valley begin to have flood threat. The most flood prone areas in Carson Valley include the Washoe Indian Reservation, Carson Valley Country Club, Glenwood Drive, Riverview Drive, Centerville Rd, NV Hwy 88, Westwood Village, Rocky Slough, Dresslerville Rd, Waterloo Ln, and Mottsville Ln. At about 5000 cfs, the USGS estimates that this much flow has about a 1 in 5 chance of being exceeded any year.
7.5 Feet	Minor lowland flooding in the lowest portions of Carson Valley. Flood prone areas include the Washoe Indian Reservation, Carson Valley Country Club, Glenwood Drive, Riverview Drive, Centerville Rd, NV Hwy 88, Westwood Village, Rocky Slough, Dresslerville Rd, Waterloo Ln, and Mottsville Ln. At about 6100 cfs, the USGS estimates that this much flow has about a 1 in 7 chance of being exceeded any year.
8.0 Feet	Flood Stage. Minor lowland flooding in Carson Valley. Some low roads, bridges, drainage structures sustain minor damage. Cottonwood Slough begins to flood Lampe Park. Flood prone areas include Washoe Indian Reservation, Carson Valley Country Club, Glenwood Dr, Riverview Dr, Centerville Rd, NV Hwy 88, Westwood Village, Rocky Slough, Waterloo Ln, and Mottsville Ln. About 7350 cfs, USGS estimates there is about a 1 in 10 chance of this flow being exceeded any year.
8.5 Feet	Moderate flooding in Carson Valley with some homes, roads, and bridges in lower portions of Minden, Gardnerville, Centerville, Washoe Indian Reservation, and Genoa flooded. At about 8700 cfs, USGS estimates that this much flow has about a 1 in 15 chance of being exceeded any year.
9.0 Feet	Moderate flood damage in Carson Valley area. Flooding of homes, businesses, schools, roads, and bridge in lower portions of Minden, Gardnerville, Centerville, Genoa, and Washoe Indian Reservation. Transportation, communication, water, and power systems begin to be affected. At about 10,200 cfs, similar to 12/31/2005 flood. USGS estimates that this much flow has about a 1 in 20 chance of being exceeded any year.
9.5 Feet	Major flooding in Carson Valley with significant damage. East Fork Carson River feeds Rocky, Cottonwood, Martin, and Henningson Sloughs which flood portions of Minden/Gardnerville downtown areas, causing damage to homes, businesses, schools, roads, and bridges. Transportation, communication, water, and power systems significantly affected. About 11,700 cfs, somewhat larger than 12/31/2005 flood. USGS estimates that this much flow has about a 1 in 25 chance of being exceeded any year.
10.0 Feet	Major flooding in Carson Valley with significant damage. The East Fork Carson River feeds Rocky, Cottonwood, Martin, and Henningson Sloughs which flood portions of Minden/Gardnerville downtown areas, causing damage to home, businesses, schools, roads, and bridges. Major effects to transportation, communication, water, and power systems. At about 13,400 cfs, lower than 2/1/1963 flood. USGS estimates that this much flow has about a 1 in 33 chance of being exceeded any year.
10.5 Feet	Major flooding with much of lower Carson Valley flooded, including portions of Minden, Gardnerville, Centerville, and Genoa. Significant damage to homes, businesses, schools, roads, and bridge. Transportation, communication, water, and power systems severely affected. US Hwy 395 closed. At about 15,000 cfs, similar 2/1/1963 flood. USGS estimates that this much flow has about a 1 in 40 chance of being exceeded any year.
11.0 Feet	Widespread flood damage in Carson Valley, including Minden/Gardnerville/Genoa/Centerville. Extensive damage to homes, businesses, schools, roads, and bridges. Transportation, communication, water, and power systems severely affected. Massive bank and channel erosion at these flows is capable of sweeping away buildings, roads, and vehicles. At about 16,700 cfs, similar to 12/23/1955 flood. USGS estimates that this much flow has about a 1 in 50 chance of being exceeded any year.
11.5 Feet	Extensive flooding throughout Carson Valley including Minden/Gardnerville/Genoa/Centerville. Extensive damage to homes, businesses, schools, roads, and bridges. Transportation, communication, water, and power systems severely affected. Massive bank and channel erosion, capable or sweeping away buildings, roads, and vehicles. At about 18,500 cfs, similar to 1/2/1997 flood. About a 1 in 70 chance of being exceeded any year per USGS estimates.
12.0 Feet	Record flooding, larger than 1/2/1997 flood. All roads in/out of Carson Valley flooded including Minden/Gardnerville/Genoa. Extensive damage to homes, businesses, schools, roads, and bridges. Transportation, communication, water, and power systems severely affected. Massive bank and channel erosion, capable of sweeping away buildings, roads, and vehicles. 10 by 2 mile portion of Carson Valley underwater. About 20,500 cfs, about a 1 in 90 chance of being exceeded any year per USGS estimates.
12.5 Feet	Flood disaster with widespread flooding of homes, businesses, schools, levees, roads, and bridges through Carson Valley including Minden/Gardnerville/Genoa/Centerville/Dresslerville. Transportation, communication, water, and power systems severely affected. Carson Valley isolated, major highways are flooded. A 12 by 3 mile portion of Carson Valley in Douglas County is underwater. Severe channel bank erosion. At about 22,500 cfs, about a 1 in 120 chance of being exceeded any year per USGS estimates.

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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