National Weather Service California-Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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WALKER RIVER - MASON AT SNYDER LANE (MASN2)
Latitude: 38.92º NLongitude: 119.19º WElevation: 4420 FeetForecast Type: Official Location
Location: Lyon County in NevadaBulletin Group: Eastern SierraRiver Group: Eastern Sierra
Issuance Time: Oct 06 2026 at 7:20 AM PDTNext Issuance: Oct 07 2026 at 9:00 AM PDT
Action: 9.0 FeetMinor Flood: 9.8 FeetModerate Flood: 11.0 FeetMajor Flood: 11.6 Feet
Please Note:

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Walker River - Mason at Snyder Lane (MASN2)
#
# File Generation Time:  10/06/2026 at 07:20 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  10/02/2026 at 02:00 AM PDT
# Maximum Observed Stage:                       4.04 Feet
# Maximum Observed Flow:                        131 cfs
#
# Earliest Date & Time of Maximum Forecast:     10/06/2026 at 06:00 PM PDT
# Maximum Forecast Stage:                       3.86 Feet
# Maximum Forecast Flow:                        107 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  10/01/2026 07 AM PDT            4.01            127                        Normal
  10/01/2026 08 AM PDT            4.00            126         -              Normal
  10/01/2026 09 AM PDT            4.00            126         0              Normal
  10/01/2026 10 AM PDT            4.00            126         0              Normal
  10/01/2026 11 AM PDT            4.00            126         0              Normal
  10/01/2026 12 PM PDT            4.01            127         +              Normal
  10/01/2026 01 PM PDT            4.02            128         +              Normal
  10/01/2026 02 PM PDT            4.03            130         +              Normal
  10/01/2026 03 PM PDT            4.04            131         +              Normal
  10/01/2026 04 PM PDT            4.03            130         -              Normal
  10/01/2026 05 PM PDT            4.03            130         0              Normal
  10/01/2026 06 PM PDT            4.04            131         +              Normal
  10/01/2026 07 PM PDT            4.03            130         -              Normal
  10/01/2026 08 PM PDT            4.04            131         +              Normal
  10/01/2026 09 PM PDT            4.04            131         0              Normal
  10/01/2026 10 PM PDT            4.03            130         -              Normal
  10/01/2026 11 PM PDT            4.03            130         0              Normal
  10/02/2026 12 AM PDT            4.04            131         +              Normal
  10/02/2026 01 AM PDT            4.04            131         0              Normal
  10/02/2026 02 AM PDT            4.04            131         0              Normal
  10/02/2026 03 AM PDT            4.03            130         -              Normal
  10/02/2026 04 AM PDT            4.03            130         0              Normal
  10/02/2026 05 AM PDT            4.02            128         -              Normal
  10/02/2026 06 AM PDT            4.02            128         0              Normal
  10/02/2026 07 AM PDT            4.01            127         -              Normal
  10/02/2026 08 AM PDT            4.01            127         0              Normal
  10/02/2026 09 AM PDT            4.00            126         -              Normal
  10/02/2026 10 AM PDT            3.99            124         -              Normal
  10/02/2026 11 AM PDT            3.98            123         -              Normal
  10/02/2026 12 PM PDT            3.97            121         -              Normal
  10/02/2026 01 PM PDT            3.97            121         0              Normal
  10/02/2026 02 PM PDT            3.97            121         0              Normal
  10/02/2026 03 PM PDT            3.97            121         0              Normal
  10/02/2026 04 PM PDT            3.98            123         +              Normal
  10/02/2026 05 PM PDT            3.98            123         0              Normal
  10/02/2026 06 PM PDT            3.97            121         -              Normal
  10/02/2026 07 PM PDT            3.98            123         +              Normal
  10/02/2026 08 PM PDT            3.97            121         -              Normal
  10/02/2026 09 PM PDT            3.98            123         +              Normal
  10/02/2026 10 PM PDT            3.97            121         -              Normal
  10/02/2026 11 PM PDT            3.98            123         +              Normal
  10/03/2026 12 AM PDT            3.97            121         -              Normal
  10/03/2026 01 AM PDT            3.97            121         0              Normal
  10/03/2026 02 AM PDT            3.99            124         +              Normal
  10/03/2026 03 AM PDT            3.99            124         0              Normal
  10/03/2026 04 AM PDT            3.99            124         0              Normal
  10/03/2026 05 AM PDT            4.00            126         +              Normal
  10/03/2026 06 AM PDT            4.00            126         0              Normal
  10/03/2026 07 AM PDT            4.00            126         0              Normal
  10/03/2026 08 AM PDT            4.00            126         0              Normal
  10/03/2026 09 AM PDT            4.00            126         0              Normal
  10/03/2026 10 AM PDT            3.99            124         -              Normal
  10/03/2026 11 AM PDT            3.99            124         0              Normal
  10/03/2026 12 PM PDT            3.98            123         -              Normal
  10/03/2026 01 PM PDT            3.99            124         +              Normal
  10/03/2026 02 PM PDT            3.98            123         -              Normal
  10/03/2026 03 PM PDT            3.97            121         -              Normal
  10/03/2026 04 PM PDT            3.97            121         0              Normal
  10/03/2026 05 PM PDT            3.96            120         -              Normal
  10/03/2026 06 PM PDT            3.96            120         0              Normal
  10/03/2026 07 PM PDT            3.96            120         0              Normal
  10/03/2026 08 PM PDT            3.97            121         +              Normal
  10/03/2026 09 PM PDT            3.97            121         0              Normal
  10/03/2026 10 PM PDT            3.97            121         0              Normal
  10/03/2026 11 PM PDT            3.96            120         -              Normal
  10/04/2026 12 AM PDT            3.96            120         0              Normal
  10/04/2026 01 AM PDT            3.95            119         -              Normal
  10/04/2026 02 AM PDT            3.95            119         0              Normal
  10/04/2026 03 AM PDT            3.95            119         0              Normal
  10/04/2026 04 AM PDT            3.95            119         0              Normal
  10/04/2026 05 AM PDT            3.94            117         -              Normal
  10/04/2026 06 AM PDT            3.94            117         0              Normal
  10/04/2026 07 AM PDT            3.94            117         0              Normal
  10/04/2026 08 AM PDT            3.95            119         +              Normal
  10/04/2026 09 AM PDT            3.94            117         -              Normal
  10/04/2026 10 AM PDT            3.95            119         +              Normal
  10/04/2026 11 AM PDT            3.95            119         0              Normal
  10/04/2026 12 PM PDT            3.95            119         0              Normal
  10/04/2026 01 PM PDT            3.94            117         -              Normal
  10/04/2026 02 PM PDT            3.95            119         +              Normal
  10/04/2026 03 PM PDT            3.94            117         -              Normal
  10/04/2026 04 PM PDT            3.92            114         -              Normal
  10/04/2026 05 PM PDT            3.93            116         +              Normal
  10/04/2026 06 PM PDT            3.93            116         0              Normal
  10/04/2026 07 PM PDT            3.92            114         -              Normal
  10/04/2026 08 PM PDT            3.93            116         +              Normal
  10/04/2026 09 PM PDT            3.93            116         0              Normal
  10/04/2026 10 PM PDT            3.93            116         0              Normal
  10/04/2026 11 PM PDT            3.93            116         0              Normal
  10/05/2026 12 AM PDT            3.93            116         0              Normal
  10/05/2026 01 AM PDT            3.93            116         0              Normal
  10/05/2026 02 AM PDT            3.93            116         0              Normal
  10/05/2026 03 AM PDT            3.94            117         +              Normal
  10/05/2026 04 AM PDT            3.93            116         -              Normal
  10/05/2026 05 AM PDT            3.93            116         0              Normal
  10/05/2026 06 AM PDT            3.93            116         0              Normal
  10/05/2026 07 AM PDT            3.94            117         +              Normal
  10/05/2026 08 AM PDT            3.93            116         -              Normal
  10/05/2026 09 AM PDT            3.93            116         0              Normal
  10/05/2026 10 AM PDT            3.92            114         -              Normal
  10/05/2026 11 AM PDT            3.91            113         -              Normal
  10/05/2026 12 PM PDT            3.91            113         0              Normal
  10/05/2026 01 PM PDT            3.91            113         0              Normal
  10/05/2026 02 PM PDT            3.89            110         -              Normal
  10/05/2026 03 PM PDT            3.87            108         -              Normal
  10/05/2026 04 PM PDT            3.86            107         -              Normal
  10/05/2026 05 PM PDT            3.85            105         -              Normal
  10/05/2026 06 PM PDT            3.85            105         0              Normal
  10/05/2026 07 PM PDT            3.85            105         0              Normal
  10/05/2026 08 PM PDT            3.85            105         0              Normal
  10/05/2026 09 PM PDT            3.85            105         0              Normal
  10/05/2026 10 PM PDT            3.86            107         +              Normal
  10/05/2026 11 PM PDT            3.85            105         -              Normal
  10/06/2026 12 AM PDT            3.84            104         -              Normal
  10/06/2026 01 AM PDT            3.85            105         +              Normal
  10/06/2026 02 AM PDT            3.85            105         0              Normal
  10/06/2026 03 AM PDT            3.85            105         0              Normal
  10/06/2026 04 AM PDT            3.85            105         0              Normal
  10/06/2026 05 AM PDT            3.84            104         -              Normal
  10/06/2026 06 AM PDT            3.84            104         0              Normal
  10/06/2026 07 AM PDT            3.84            104         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  10/06/2026 08 AM PDT            3.84            104                        Normal
  10/06/2026 09 AM PDT            3.85            105         +              Normal
  10/06/2026 10 AM PDT            3.85            105         0              Normal
  10/06/2026 11 AM PDT            3.85            105         0              Normal
  10/06/2026 12 PM PDT            3.85            105         0              Normal
  10/06/2026 01 PM PDT            3.85            105         0              Normal
  10/06/2026 02 PM PDT            3.85            105         0              Normal
  10/06/2026 03 PM PDT            3.85            105         0              Normal
  10/06/2026 04 PM PDT            3.85            105         0              Normal
  10/06/2026 05 PM PDT            3.85            105         0              Normal
  10/06/2026 06 PM PDT            3.86            107         +              Normal
  10/06/2026 07 PM PDT            3.86            107         0              Normal
  10/06/2026 08 PM PDT            3.86            107         0              Normal
  10/06/2026 09 PM PDT            3.86            107         0              Normal
  10/06/2026 10 PM PDT            3.85            105         -              Normal
  10/06/2026 11 PM PDT            3.85            105         0              Normal
  10/07/2026 12 AM PDT            3.85            105         0              Normal
  10/07/2026 01 AM PDT            3.85            105         0              Normal
  10/07/2026 02 AM PDT            3.85            105         0              Normal
  10/07/2026 03 AM PDT            3.84            104         -              Normal
  10/07/2026 04 AM PDT            3.84            104         0              Normal
  10/07/2026 05 AM PDT            3.83            103         -              Normal
  10/07/2026 06 AM PDT            3.83            103         0              Normal
  10/07/2026 07 AM PDT            3.83            103         0              Normal
  10/07/2026 08 AM PDT            3.83            103         0              Normal
  10/07/2026 09 AM PDT            3.82            101         -              Normal
  10/07/2026 10 AM PDT            3.82            101         0              Normal
  10/07/2026 11 AM PDT            3.82            101         0              Normal
  10/07/2026 12 PM PDT            3.81            100         -              Normal
  10/07/2026 01 PM PDT            3.81            100         0              Normal
  10/07/2026 02 PM PDT            3.81            100         0              Normal
  10/07/2026 03 PM PDT            3.81            100         0              Normal
  10/07/2026 04 PM PDT            3.81            100         0              Normal
  10/07/2026 05 PM PDT            3.81            100         0              Normal
  10/07/2026 06 PM PDT            3.81            100         0              Normal
  10/07/2026 07 PM PDT            3.81            100         0              Normal
  10/07/2026 08 PM PDT            3.81            100         0              Normal
  10/07/2026 09 PM PDT            3.80             99         -              Normal
  10/07/2026 10 PM PDT            3.80             99         0              Normal
  10/07/2026 11 PM PDT            3.81            100         +              Normal
  10/08/2026 12 AM PDT            3.81            100         0              Normal
  10/08/2026 01 AM PDT            3.81            100         0              Normal
  10/08/2026 02 AM PDT            3.81            100         0              Normal
  10/08/2026 03 AM PDT            3.81            100         0              Normal
  10/08/2026 04 AM PDT            3.81            100         0              Normal
  10/08/2026 05 AM PDT            3.81            100         0              Normal
  10/08/2026 06 AM PDT            3.81            100         0              Normal
  10/08/2026 07 AM PDT            3.81            100         0              Normal
  10/08/2026 08 AM PDT            3.81            100         0              Normal
  10/08/2026 09 AM PDT            3.80             99         -              Normal
  10/08/2026 10 AM PDT            3.80             99         0              Normal
  10/08/2026 11 AM PDT            3.80             99         0              Normal
  10/08/2026 12 PM PDT            3.80             99         0              Normal
  10/08/2026 01 PM PDT            3.80             99         0              Normal
  10/08/2026 02 PM PDT            3.80             99         0              Normal
  10/08/2026 03 PM PDT            3.80             99         0              Normal
  10/08/2026 04 PM PDT            3.80             99         0              Normal
  10/08/2026 05 PM PDT            3.80             99         0              Normal
  10/08/2026 06 PM PDT            3.81            100         +              Normal
  10/08/2026 07 PM PDT            3.81            100         0              Normal
  10/08/2026 08 PM PDT            3.81            100         0              Normal
  10/08/2026 09 PM PDT            3.81            100         0              Normal
  10/08/2026 10 PM PDT            3.81            100         0              Normal
  10/08/2026 11 PM PDT            3.81            100         0              Normal
  10/09/2026 12 AM PDT            3.81            100         0              Normal
  10/09/2026 01 AM PDT            3.81            100         0              Normal
  10/09/2026 02 AM PDT            3.81            100         0              Normal
  10/09/2026 03 AM PDT            3.81            100         0              Normal
  10/09/2026 04 AM PDT            3.81            100         0              Normal
  10/09/2026 05 AM PDT            3.81            100         0              Normal
  10/09/2026 06 AM PDT            3.81            100         0              Normal
  10/09/2026 07 AM PDT            3.81            100         0              Normal
  10/09/2026 08 AM PDT            3.81            100         0              Normal
  10/09/2026 09 AM PDT            3.81            100         0              Normal
  10/09/2026 10 AM PDT            3.81            100         0              Normal
  10/09/2026 11 AM PDT            3.81            100         0              Normal
  10/09/2026 12 PM PDT            3.81            100         0              Normal
  10/09/2026 01 PM PDT            3.81            100         0              Normal
  10/09/2026 02 PM PDT            3.81            100         0              Normal
  10/09/2026 03 PM PDT            3.81            100         0              Normal
  10/09/2026 04 PM PDT            3.81            100         0              Normal
  10/09/2026 05 PM PDT            3.81            100         0              Normal
  10/09/2026 06 PM PDT            3.81            100         0              Normal
  10/09/2026 07 PM PDT            3.81            100         0              Normal
  10/09/2026 08 PM PDT            3.81            100         0              Normal
  10/09/2026 09 PM PDT            3.81            100         0              Normal
  10/09/2026 10 PM PDT            3.81            100         0              Normal
  10/09/2026 11 PM PDT            3.82            101         +              Normal
  10/10/2026 12 AM PDT            3.82            101         0              Normal
  10/10/2026 01 AM PDT            3.82            101         0              Normal
  10/10/2026 02 AM PDT            3.82            101         0              Normal
  10/10/2026 03 AM PDT            3.82            101         0              Normal
  10/10/2026 04 AM PDT            3.82            101         0              Normal
  10/10/2026 05 AM PDT            3.82            101         0              Normal
  10/10/2026 06 AM PDT            3.82            101         0              Normal
  10/10/2026 07 AM PDT            3.82            101         0              Normal
  10/10/2026 08 AM PDT            3.82            101         0              Normal
  10/10/2026 09 AM PDT            3.82            101         0              Normal
  10/10/2026 10 AM PDT            3.82            101         0              Normal
  10/10/2026 11 AM PDT            3.82            101         0              Normal
  10/10/2026 12 PM PDT            3.82            101         0              Normal
  10/10/2026 01 PM PDT            3.82            101         0              Normal
  10/10/2026 02 PM PDT            3.82            101         0              Normal
  10/10/2026 03 PM PDT            3.82            101         0              Normal
  10/10/2026 04 PM PDT            3.82            101         0              Normal
  10/10/2026 05 PM PDT            3.82            101         0              Normal
  10/10/2026 06 PM PDT            3.82            101         0              Normal
  10/10/2026 07 PM PDT            3.82            101         0              Normal
  10/10/2026 08 PM PDT            3.82            101         0              Normal
  10/10/2026 09 PM PDT            3.82            101         0              Normal
  10/10/2026 10 PM PDT            3.83            103         +              Normal
  10/10/2026 11 PM PDT            3.83            103         0              Normal
  10/11/2026 12 AM PDT            3.83            103         0              Normal
  10/11/2026 01 AM PDT            3.83            103         0              Normal
  10/11/2026 02 AM PDT            3.83            103         0              Normal
  10/11/2026 03 AM PDT            3.83            103         0              Normal
  10/11/2026 04 AM PDT            3.83            103         0              Normal
  10/11/2026 05 AM PDT            3.83            103         0              Normal
#
# NOTE 1: Stages are rounded to the nearest hundredth (.01) of a foot.
# NOTE 2: Flows are rounded to the nearest (1) cfs.
# NOTE 3: Trends are determined using hourly change in unrounded stage and flow.
# NOTE 4: Maximum Values are determined using unrounded stage and flow.