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: Aug 21 2026 at 7:28 AM PDTNext Issuance: Aug 22 2026 at 9:00 AM PDT
Action/Monitor: 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:  08/21/2026 at 07:29 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  08/16/2026 at 09:00 AM PDT
# Maximum Observed Stage:                       4.18 Feet
# Maximum Observed Flow:                        170 cfs
#
# Earliest Date & Time of Maximum Forecast:     08/25/2026 at 06:00 PM PDT
# Maximum Forecast Stage:                       4.03 Feet
# Maximum Forecast Flow:                        146 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  08/16/2026 07 AM PDT            4.18            170                        Normal
  08/16/2026 08 AM PDT            4.18            170         0              Normal
  08/16/2026 09 AM PDT            4.18            170         0              Normal
  08/16/2026 10 AM PDT            4.16            167         -              Normal
  08/16/2026 11 AM PDT            4.15            165         -              Normal
  08/16/2026 12 PM PDT            4.15            165         0              Normal
  08/16/2026 01 PM PDT            4.15            165         0              Normal
  08/16/2026 02 PM PDT            4.15            165         0              Normal
  08/16/2026 03 PM PDT            4.14            163         -              Normal
  08/16/2026 04 PM PDT            4.13            162         -              Normal
  08/16/2026 05 PM PDT            4.12            160         -              Normal
  08/16/2026 06 PM PDT            4.12            160         0              Normal
  08/16/2026 07 PM PDT            4.12            160         0              Normal
  08/16/2026 08 PM PDT            4.12            160         0              Normal
  08/16/2026 09 PM PDT            4.11            159         -              Normal
  08/16/2026 10 PM PDT            4.12            160         +              Normal
  08/16/2026 11 PM PDT            4.12            160         0              Normal
  08/17/2026 12 AM PDT            4.13            162         +              Normal
  08/17/2026 01 AM PDT            4.13            162         0              Normal
  08/17/2026 02 AM PDT            4.13            162         0              Normal
  08/17/2026 03 AM PDT            4.13            162         0              Normal
  08/17/2026 04 AM PDT            4.13            162         0              Normal
  08/17/2026 05 AM PDT            4.13            162         0              Normal
  08/17/2026 06 AM PDT            4.14            163         +              Normal
  08/17/2026 07 AM PDT            4.14            163         0              Normal
  08/17/2026 08 AM PDT            4.13            162         -              Normal
  08/17/2026 09 AM PDT            4.13            162         0              Normal
  08/17/2026 10 AM PDT            4.13            162         0              Normal
  08/17/2026 11 AM PDT            4.11            159         -              Normal
  08/17/2026 12 PM PDT            4.08            154         -              Normal
  08/17/2026 01 PM PDT            4.06            151         -              Normal
  08/17/2026 02 PM PDT            4.05            149         -              Normal
  08/17/2026 03 PM PDT            4.05            149         0              Normal
  08/17/2026 04 PM PDT            4.04            148         -              Normal
  08/17/2026 05 PM PDT            4.04            148         0              Normal
  08/17/2026 06 PM PDT            4.04            148         0              Normal
  08/17/2026 07 PM PDT            4.03            146         -              Normal
  08/17/2026 08 PM PDT            4.03            146         0              Normal
  08/17/2026 09 PM PDT            4.03            146         0              Normal
  08/17/2026 10 PM PDT            4.03            146         0              Normal
  08/17/2026 11 PM PDT            4.02            145         -              Normal
  08/18/2026 12 AM PDT            4.02            145         0              Normal
  08/18/2026 01 AM PDT            4.02            145         0              Normal
  08/18/2026 02 AM PDT            4.03            146         +              Normal
  08/18/2026 03 AM PDT            4.02            145         -              Normal
  08/18/2026 04 AM PDT            4.01            143         -              Normal
  08/18/2026 05 AM PDT            4.02            145         +              Normal
  08/18/2026 06 AM PDT            4.02            145         0              Normal
  08/18/2026 07 AM PDT            4.02            145         0              Normal
  08/18/2026 08 AM PDT            4.02            145         0              Normal
  08/18/2026 09 AM PDT            4.01            143         -              Normal
  08/18/2026 10 AM PDT            4.00            142         -              Normal
  08/18/2026 11 AM PDT            3.99            140         -              Normal
  08/18/2026 12 PM PDT            3.98            139         -              Normal
  08/18/2026 01 PM PDT            3.98            139         0              Normal
  08/18/2026 02 PM PDT            3.98            139         0              Normal
  08/18/2026 03 PM PDT            3.97            137         -              Normal
  08/18/2026 04 PM PDT            3.97            137         0              Normal
  08/18/2026 05 PM PDT            3.95            134         -              Normal
  08/18/2026 06 PM PDT            3.95            134         0              Normal
  08/18/2026 07 PM PDT            3.94            133         -              Normal
  08/18/2026 08 PM PDT            3.96            136         +              Normal
  08/18/2026 09 PM PDT            3.97            137         +              Normal
  08/18/2026 10 PM PDT            3.98            139         +              Normal
  08/18/2026 11 PM PDT            3.99            140         +              Normal
  08/19/2026 12 AM PDT            3.99            140         0              Normal
  08/19/2026 01 AM PDT            4.00            142         +              Normal
  08/19/2026 02 AM PDT            4.01            143         +              Normal
  08/19/2026 03 AM PDT            4.01            143         0              Normal
  08/19/2026 04 AM PDT            4.00            142         -              Normal
  08/19/2026 05 AM PDT            4.01            143         +              Normal
  08/19/2026 06 AM PDT            4.00            142         -              Normal
  08/19/2026 07 AM PDT            4.01            143         +              Normal
  08/19/2026 08 AM PDT            4.01            143         0              Normal
  08/19/2026 09 AM PDT            4.00            142         -              Normal
  08/19/2026 10 AM PDT            4.00            142         0              Normal
  08/19/2026 11 AM PDT            3.98            139         -              Normal
  08/19/2026 12 PM PDT            3.98            139         0              Normal
  08/19/2026 01 PM PDT            3.97            137         -              Normal
  08/19/2026 02 PM PDT            3.97            137         0              Normal
  08/19/2026 03 PM PDT            3.97            137         0              Normal
  08/19/2026 04 PM PDT            3.96            136         -              Normal
  08/19/2026 05 PM PDT            3.96            136         0              Normal
  08/19/2026 06 PM PDT            3.95            134         -              Normal
  08/19/2026 07 PM PDT            3.94            133         -              Normal
  08/19/2026 08 PM PDT            3.92            130         -              Normal
  08/19/2026 09 PM PDT            3.91            128         -              Normal
  08/19/2026 10 PM PDT            3.90            127         -              Normal
  08/19/2026 11 PM PDT            3.90            127         0              Normal
  08/20/2026 12 AM PDT            3.89            126         -              Normal
  08/20/2026 01 AM PDT            3.90            127         +              Normal
  08/20/2026 02 AM PDT            3.89            126         -              Normal
  08/20/2026 03 AM PDT            3.89            126         0              Normal
  08/20/2026 04 AM PDT            3.89            126         0              Normal
  08/20/2026 05 AM PDT            3.90            127         +              Normal
  08/20/2026 06 AM PDT            3.89            126         -              Normal
  08/20/2026 07 AM PDT            3.90            127         +              Normal
  08/20/2026 08 AM PDT            3.89            126         -              Normal
  08/20/2026 09 AM PDT            3.88            124         -              Normal
  08/20/2026 10 AM PDT            3.89            126         +              Normal
  08/20/2026 11 AM PDT            3.88            124         -              Normal
  08/20/2026 12 PM PDT            3.87            123         -              Normal
  08/20/2026 01 PM PDT            3.87            123         0              Normal
  08/20/2026 02 PM PDT            3.86            121         -              Normal
  08/20/2026 03 PM PDT            3.86            121         0              Normal
  08/20/2026 04 PM PDT            3.85            120         -              Normal
  08/20/2026 05 PM PDT            3.86            121         +              Normal
  08/20/2026 06 PM PDT            3.86            121         0              Normal
  08/20/2026 07 PM PDT            3.86            121         0              Normal
  08/20/2026 08 PM PDT            3.86            121         0              Normal
  08/20/2026 09 PM PDT            3.86            121         0              Normal
  08/20/2026 10 PM PDT            3.85            120         -              Normal
  08/20/2026 11 PM PDT            3.86            121         +              Normal
  08/21/2026 12 AM PDT            3.85            120         -              Normal
  08/21/2026 01 AM PDT            3.84            119         -              Normal
  08/21/2026 02 AM PDT            3.84            119         0              Normal
  08/21/2026 03 AM PDT            3.84            119         0              Normal
  08/21/2026 04 AM PDT            3.84            119         0              Normal
  08/21/2026 05 AM PDT            3.84            119         0              Normal
  08/21/2026 06 AM PDT            3.84            119         0              Normal
  08/21/2026 07 AM PDT            3.84            119         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  08/21/2026 08 AM PDT            3.84            119                        Normal
  08/21/2026 09 AM PDT            3.84            119         0              Normal
  08/21/2026 10 AM PDT            3.84            119         0              Normal
  08/21/2026 11 AM PDT            3.85            120         +              Normal
  08/21/2026 12 PM PDT            3.85            120         0              Normal
  08/21/2026 01 PM PDT            3.85            120         0              Normal
  08/21/2026 02 PM PDT            3.85            120         0              Normal
  08/21/2026 03 PM PDT            3.85            120         0              Normal
  08/21/2026 04 PM PDT            3.85            120         0              Normal
  08/21/2026 05 PM PDT            3.85            120         0              Normal
  08/21/2026 06 PM PDT            3.86            121         +              Normal
  08/21/2026 07 PM PDT            3.86            121         0              Normal
  08/21/2026 08 PM PDT            3.87            123         +              Normal
  08/21/2026 09 PM PDT            3.87            123         0              Normal
  08/21/2026 10 PM PDT            3.88            124         +              Normal
  08/21/2026 11 PM PDT            3.89            126         +              Normal
  08/22/2026 12 AM PDT            3.90            127         +              Normal
  08/22/2026 01 AM PDT            3.90            127         0              Normal
  08/22/2026 02 AM PDT            3.91            128         +              Normal
  08/22/2026 03 AM PDT            3.92            130         +              Normal
  08/22/2026 04 AM PDT            3.92            130         0              Normal
  08/22/2026 05 AM PDT            3.93            131         +              Normal
  08/22/2026 06 AM PDT            3.93            131         0              Normal
  08/22/2026 07 AM PDT            3.94            133         +              Normal
  08/22/2026 08 AM PDT            3.94            133         0              Normal
  08/22/2026 09 AM PDT            3.94            133         0              Normal
  08/22/2026 10 AM PDT            3.95            134         +              Normal
  08/22/2026 11 AM PDT            3.95            134         0              Normal
  08/22/2026 12 PM PDT            3.96            136         +              Normal
  08/22/2026 01 PM PDT            3.96            136         0              Normal
  08/22/2026 02 PM PDT            3.96            136         0              Normal
  08/22/2026 03 PM PDT            3.96            136         0              Normal
  08/22/2026 04 PM PDT            3.96            136         0              Normal
  08/22/2026 05 PM PDT            3.97            137         +              Normal
  08/22/2026 06 PM PDT            3.98            139         +              Normal
  08/22/2026 07 PM PDT            3.98            139         0              Normal
  08/22/2026 08 PM PDT            3.98            139         0              Normal
  08/22/2026 09 PM PDT            3.98            139         0              Normal
  08/22/2026 10 PM PDT            3.98            139         0              Normal
  08/22/2026 11 PM PDT            3.98            139         0              Normal
  08/23/2026 12 AM PDT            3.99            140         +              Normal
  08/23/2026 01 AM PDT            3.99            140         0              Normal
  08/23/2026 02 AM PDT            3.99            140         0              Normal
  08/23/2026 03 AM PDT            3.99            140         0              Normal
  08/23/2026 04 AM PDT            3.99            140         0              Normal
  08/23/2026 05 AM PDT            3.99            140         0              Normal
  08/23/2026 06 AM PDT            3.99            140         0              Normal
  08/23/2026 07 AM PDT            3.99            140         0              Normal
  08/23/2026 08 AM PDT            4.00            142         +              Normal
  08/23/2026 09 AM PDT            4.00            142         0              Normal
  08/23/2026 10 AM PDT            4.00            142         0              Normal
  08/23/2026 11 AM PDT            4.00            142         0              Normal
  08/23/2026 12 PM PDT            4.00            142         0              Normal
  08/23/2026 01 PM PDT            4.00            142         0              Normal
  08/23/2026 02 PM PDT            4.00            142         0              Normal
  08/23/2026 03 PM PDT            4.00            142         0              Normal
  08/23/2026 04 PM PDT            4.00            142         0              Normal
  08/23/2026 05 PM PDT            4.00            142         0              Normal
  08/23/2026 06 PM PDT            4.00            142         0              Normal
  08/23/2026 07 PM PDT            4.01            143         +              Normal
  08/23/2026 08 PM PDT            4.01            143         0              Normal
  08/23/2026 09 PM PDT            4.01            143         0              Normal
  08/23/2026 10 PM PDT            4.01            143         0              Normal
  08/23/2026 11 PM PDT            4.01            143         0              Normal
  08/24/2026 12 AM PDT            4.01            143         0              Normal
  08/24/2026 01 AM PDT            4.01            143         0              Normal
  08/24/2026 02 AM PDT            4.01            143         0              Normal
  08/24/2026 03 AM PDT            4.01            143         0              Normal
  08/24/2026 04 AM PDT            4.01            143         0              Normal
  08/24/2026 05 AM PDT            4.01            143         0              Normal
  08/24/2026 06 AM PDT            4.01            143         0              Normal
  08/24/2026 07 AM PDT            4.01            143         0              Normal
  08/24/2026 08 AM PDT            4.01            143         0              Normal
  08/24/2026 09 AM PDT            4.01            143         0              Normal
  08/24/2026 10 AM PDT            4.01            143         0              Normal
  08/24/2026 11 AM PDT            4.01            143         0              Normal
  08/24/2026 12 PM PDT            4.01            143         0              Normal
  08/24/2026 01 PM PDT            4.01            143         0              Normal
  08/24/2026 02 PM PDT            4.01            143         0              Normal
  08/24/2026 03 PM PDT            4.01            143         0              Normal
  08/24/2026 04 PM PDT            4.01            143         0              Normal
  08/24/2026 05 PM PDT            4.01            143         0              Normal
  08/24/2026 06 PM PDT            4.02            145         +              Normal
  08/24/2026 07 PM PDT            4.02            145         0              Normal
  08/24/2026 08 PM PDT            4.02            145         0              Normal
  08/24/2026 09 PM PDT            4.02            145         0              Normal
  08/24/2026 10 PM PDT            4.02            145         0              Normal
  08/24/2026 11 PM PDT            4.02            145         0              Normal
  08/25/2026 12 AM PDT            4.02            145         0              Normal
  08/25/2026 01 AM PDT            4.02            145         0              Normal
  08/25/2026 02 AM PDT            4.02            145         0              Normal
  08/25/2026 03 AM PDT            4.02            145         0              Normal
  08/25/2026 04 AM PDT            4.02            145         0              Normal
  08/25/2026 05 AM PDT            4.02            145         0              Normal
  08/25/2026 06 AM PDT            4.02            145         0              Normal
  08/25/2026 07 AM PDT            4.02            145         0              Normal
  08/25/2026 08 AM PDT            4.02            145         0              Normal
  08/25/2026 09 AM PDT            4.02            145         0              Normal
  08/25/2026 10 AM PDT            4.02            145         0              Normal
  08/25/2026 11 AM PDT            4.02            145         0              Normal
  08/25/2026 12 PM PDT            4.02            145         0              Normal
  08/25/2026 01 PM PDT            4.02            145         0              Normal
  08/25/2026 02 PM PDT            4.02            145         0              Normal
  08/25/2026 03 PM PDT            4.02            145         0              Normal
  08/25/2026 04 PM PDT            4.02            145         0              Normal
  08/25/2026 05 PM PDT            4.02            145         0              Normal
  08/25/2026 06 PM PDT            4.03            146         +              Normal
  08/25/2026 07 PM PDT            4.03            146         0              Normal
  08/25/2026 08 PM PDT            4.03            146         0              Normal
  08/25/2026 09 PM PDT            4.03            146         0              Normal
  08/25/2026 10 PM PDT            4.03            146         0              Normal
  08/25/2026 11 PM PDT            4.03            146         0              Normal
  08/26/2026 12 AM PDT            4.03            146         0              Normal
  08/26/2026 01 AM PDT            4.03            146         0              Normal
  08/26/2026 02 AM PDT            4.03            146         0              Normal
  08/26/2026 03 AM PDT            4.03            146         0              Normal
  08/26/2026 04 AM PDT            4.03            146         0              Normal
  08/26/2026 05 AM PDT            4.03            146         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.