CNRFC - Hydrology - Observed River/Reservoir Conditions

*** IMPORTANT *** Week of June 16 - Website Data Outage - Due to a major computer upgrade the week of June 16, nearly all data on the CNRFC web site will not be updated. We anticipate the down time to be approximately 4 days. The latest deterministic hydrologic forecasts for official forecast points will continue to be available at the National Water Prediction Service during this time.

TRUCKEE RIVER - VISTA (VISN2)

Latitude: 39.52º N	Longitude: 119.70º W	Elevation: 4368 Feet
Location: Washoe County in Nevada		River Group: Eastern Sierra

Monitor Stage: 15.0 Feet

Flood Stage: 17.0 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
2024*	1,740	7.42	May 15, 2024
2023*	5,270	12.87	May 23, 2023
2022*	5,590	13.32	Oct 25, 2021
2021*	765	5.11	May 7, 2021
2020*	1,900	7.71	May 18, 2020
Historical High Stage/Flow Events (Period of Record - Discontinuous 1899 - Present) - Ranked by Flow
1963*	18,900	16.76**	Feb 01, 1963
1997*	18,500	24.16**	Jan 02, 1997
1907*	17,000	--	Mar 18, 1907
1986*	16,100	15.82**	Feb 18, 1986
2006*	13,700	20.28	Dec 31, 2005
* Discharge affected to unknown degree by regulation or diversion
** Gage location 1.2 miles downstream. Datum change with a difference of -0.99 ft must be applied to data before 10/01/1993 to convert to current datum.

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Official 7 Day National Weather Service Forecast (NVZ003)

Today: Mostly sunny. Slight chance of showers and thunderstorms in the afternoon. Highs 84 to 89. Light winds becoming northeast around 10 mph in the afternoon.

Tonight: Mostly clear. Slight chance of showers and thunderstorms in the evening. Lows 52 to 62. West winds 10 to 15 mph.

Saturday: Sunny. Highs 88 to 93. Light winds becoming northeast around 10 mph in the afternoon.

Saturday Night: Clear. Lows 56 to 66. Northwest winds 10 to 15 mph.

Sunday: Mostly sunny. Slight chance of showers and thunderstorms in the afternoon. Highs 91 to 96. North winds 10 to 15 mph.

Sunday Night: Partly cloudy. Lows 57 to 67.

Monday through Wednesday Night: Clear. Highs 90 to 95. Lows 56 to 66.

Thursday: Sunny. Highs 84 to 89.

Flood Impacts
26.0 Feet	Catastrophic Record flooding with massive damage to property and infrastructure, major disruption to power, communication, transportation, water, and hospital services from Greg Street Bridge in Reno to Derby Dam.
25.0 Feet	Record Flooding from Reno to Derby Dam. Disastrous flooding with extensive damage to property and infrastructure in the floodplain, including the airport. Major disruption to power, communication, transportation, water, and hospital services.
24.0 Feet	Flood disaster from Greg Street Bridge in Reno to Derby Dam. Reno Airport under several feet of water. Deepest areas in Sparks Industrial area up to 10 feet deep. Flooding likely impacting highway 80. Truckee River floods roads accessing homes in Lockwood in addition to major backwater flooding on Long Valley Creek. Peak similar to 1/2/1997 peak stage.
23.0 Feet	Extensive damage from Reno to Derby Dam, including the Reno Airport, Sparks, and the Truckee Meadows. Truckee Meadows flooded from Reno Airport east to Hidden Valley and Glendale Ave and Interstate 80 south to Mira Loma. Some flooding north of I-80 likely near Sparks Blvd.
22.0 Feet	Major flooding with significant property and infrastructure damage. Many bridges closed. Ponding water likely impacting Reno Airport.
21.0 Feet	Major Flood Stage. Major flooding from Greg Street Bridge to Derby Dam, numerous roads and bridges flooded, extensive flooding in the Sparks Industrial area, and numerous lower homes in Hidden Valley. Phone, power, and water supplies begin to be impacted.
20.0 Feet	Moderate flooding impacts from Reno to Derby Dam impacting numerous roads, Sparks Industrial area, and several low lying homes in Hidden Valley. Similar to 12/31/2005 peak stage, and slightly higher than 1/9/2017.
19.0 Feet	Moderate flooding. Numerous road closures including East McCarren, East Mill Street, Clean Water Way, Pembroke Lane, and many streets in the Sparks Industrial area. Combined backwater and local tributary flows may start impacting lowest homes near Boynton Slough in Hidden Valley. Flooding of lower ranch lands below Lockwood. Slightly lower than 1/9/2017 peak stage.
18.5 Feet	Moderate Flood Stage. More extensive out of bank flows beginning to significantly impact low lying areas along the river including areas around North Edison Way, UNR farms, Clean Water Way, Pembroke Lane and Lower Steamboat Creek. Stormwater flooding likely in Sparks Industrial area. Backwater issues begin to impact Long Valley Creek in Lockwood.
18.0 Feet	Expanding minor flood impacts through low lying areas with increasing backwater problems. Water just starting to overflow the south bank near North Edison Way. Similar to 2/10/17 peak. No adverse river flooding impacts between the eastern edge of Sparks and Derby Dam.
17.0 Feet	Minor Flood Stage. Minor flooding below Greg Street Bridge including parks and bike path along the river, UNR Farms, and backwater flooding of Steamboat Creek and Boynton Slough. Stormwater flooding possible in Sparks Industrial area with heavy valley rains. No adverse river flooding impacts between the eastern edge of Sparks and Derby Dam.
16.0 Feet	Near maximum safe channel capacity between Greg Street Bridge and Derby Dam. High Truckee River stage leads to increasing backwater south along Steamboat Creek and limits stormwater drainage from the Sparks Industrial area. Similar to secondary January 2017 peak (1/11/17).
15.0 Feet	Monitor Stage. Approaching bankfull from Greg Street Bridge in Reno to Derby Dam. Releases from flood control reservoirs (Prosser, Stampede and Boca) are cut slightly in advance of this level. Very minor flooding of low lying meadows and Truckee River bike path below East McCarran Boulevard in Sparks. Some backwater effects extend south along Steamboat Creek to near Pembroke Drive, and could hinder storm water drainage in the Sparks Industrial area.

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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