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WEST WALKER RIVER - HWY 395 BELOW LITTLE WALKER (WWBC1)
Latitude: 38.38º NLongitude: 119.45º WElevation: 6591 Feet
Location: Mono County in CaliforniaRiver Group: Eastern Sierra
Issuance Time: Feb 04 2023 at 9:28 AM PSTNext Issuance: Feb 05 2023 at 9:00 AM PST
Monitor Stage: 5.5 FeetFlood Stage: 6.0 Feet

Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
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Verification - Historical Graphical RVF
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Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2021
909
3.65
May 7, 2021
2020
1,300
4.19
Apr 29, 2020
2019
2,970
6.16
Jun 7, 2019
2018
3,320
5.76
Apr 7, 2018
2017
4,260
6.95
Jun 20, 2017
 Historical High Stage/Flow Events (Period of Record - Apr 1938 to Present) - Ranked by Flow
1997*
12,300
10.11
Jan 02, 1997
1951*
6,220
8.10
Nov 20, 1950
1938*
5,800
--
Dec 11, 1937
1956*
5,180
7.41
Dec 23, 1955
1996*
4,610
6.55
May 16, 1996
 * Numerous small gage location changes, some including datum changes, prior to Mar 1997.
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ073)
Today: Mostly cloudy. Highs 36 to 46. South winds 10 to 15 mph. Gusts up to 40 mph in the afternoon. Ridge gusts up to 50 mph increasing to 80 mph in the afternoon.

Tonight: Partly cloudy with scattered snow showers in the evening, then heavy snow and rain after midnight. Snow level 6500 feet. Snow accumulation up to 3 inches with 8 to 16 inches above 7000 feet. Lows 21 to 31. South winds 20 to 30 mph with gusts up to 55 mph. Ridge gusts up to 100 mph increasing to 115 mph after midnight.

Sunday: Snow and isolated thunderstorms in the morning, then snow showers in the afternoon. Snow accumulation up to 3 inches with 3 to 9 inches above 7000 feet. Highs 28 to 38. Southwest winds 15 to 25 mph. Gusts up to 50 mph decreasing to 35 mph in the afternoon. Ridge gusts up to 105 mph decreasing to 80 mph in the afternoon.

Sunday Night: Mostly cloudy with isolated snow showers in the evening, then partly cloudy after midnight. Lows 1 below to 9 above zero. West winds 10 to 15 mph. Gusts up to 30 mph in the evening. Ridge gusts up to 60 mph.

Monday: Partly cloudy in the morning then clearing. Highs 25 to 35. Northwest winds 10 to 15 mph. Ridge gusts up to 50 mph.

Monday Night: Clear. Lows 3 to 13.

Tuesday: Sunny. Highs 33 to 43.

Tuesday Night: Partly cloudy in the evening then clearing. Lows 9 to 19.

Wednesday through Friday: Clear. Highs 37 to 47. Lows 8 to 18.
Impacts - E19 Information
5.5 FeetMonitor stage. No flooding in reach from West Walker River Canyon through Antelope Valley CA, including Walker, Coleville, and Topaz CA.
6.0 FeetFlood Stage. Minor flooding of lowlands, pasture, and rural roads in West Walker River Canyon and Antelope Valley, including Walker, Coleville, and Topaz CA. Roughly similar to late May 2005, and slightly below peaks of June 2010 and May 2006.
6.5 FeetModerate flooding of lowlands, pasture, and some rural roads from the West Walker River Canyon to Topaz Lake, including Walker, Coleville, and Topaz CA. Similar to peak of June 2011, and slightly below the peak of June 2017.
7.0 FeetSignificant flooding of lowlands, agricultural land, yards, basements, rural roads in the West Walker River Canyon and in Antelope Valley, including Walker, Coleville, and Topaz CA. Flooding of structures limited although sandbagging necessary. Roughly similar to May 1996 flood, and slightly in excess of June 2017 peak.
7.3 FeetMajor flooding in the West Walker River Canyon and in Antelope Valley - Walker, Coleville, and Topaz CA. Many buildings, roads flooded and washed out, with major damage to agricultural lands. Extensive sandbagging required to protect property. Transportation affected. Severe damage to Highway 395 in West Walker Canyon possible.
7.5 FeetMajor flooding in the West Walker Canyon and in Antelope Valley - Walker, Coleville, and Topaz CA. Many buildings, roads flooded and washed out. Major damage to agricultural lands. Extensive sandbagging required to protect property. Transportation affected. Severe damage to Highway 395 in West Walker Canyon.
8.0 FeetFlooding near disaster levels in the West Walker Canyon and in Antelope Valley - Walker, Coleville, and Topaz CA. Numerous structures flooded and roads washed out. Many sections of Highway 395 destroyed in West Walker Canyon. Major damage to agricultural land due to erosion and destroyed facilities, diversion dams, headgates, canals, levees.
8.25 FeetFlood disaster in West Walker Canyon and in Antelope Valley. Widespread flood damage to roads, bridges, homes, and structures along river. Severe damage to Highway 395 in West Walker Canyon with highway likely closed. Historically this flow has been reached or exceeded only once in January 1997.
8.8 FeetFlood disaster from Walker River Canyon to Antelope Valley/Topaz Lake. Widespread flood damage to roads, bridges, homes, and structures along river. Severe damage to Highway 395 in West Walker River Canyon with the highway probably closed. Historically this flow has been exceeded only once, in January 1997.
9.5 FeetNear record flooding. Area cut off as most transportation routes into area destroyed/flooded. Massive destruction of infrastructure and economy including utilities, roads, business, homes, etc.
10.25 FeetFlood of record. Highway 395 in West Walker River Canyon closed for months. Massive destruction to infrastructure and economy including transportation, power, water, homes, businesses, etc. Area isolated. At this stage in January 1997, a 6.5 mile stretch of Highway 395 completely scoured with debris from canyon deposited in the town of Walker.
10.5 FeetIncredible flood disaster in excess of January 1997 event.
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.