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 Feet
Location: Lyon County in NevadaBulletin Group: Eastern SierraRiver Group: Eastern Sierra
Issuance Time: Oct 01 2023 at 8:02 AM PDTNext Issuance: Oct 02 2023 at 9:00 AM PDT
Monitor Stage: 9.0 FeetFlood Stage: 9.8 Feet

SPECIAL NOTE:Significant losses can occur in the Mason Valley upstream of the Mason stream gage. Increased forecast uncertainty exists in the long range forecast due to these unknown losses.

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Walker River - Mason at Snyder Lane (MASN2)
#
# File Generation Time:  10/01/2023 at 08:02 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  10/01/2023 at 07:00 AM PDT
# Maximum Observed Stage:                       5.0 Feet
# Maximum Observed Flow:                        269 cfs
#
# Earliest Date & Time of Maximum Forecast:     10/01/2023 at 09:00 AM PDT
# Maximum Forecast Stage:                       5.0 Feet
# Maximum Forecast Flow:                        271 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  09/26/2023 08 AM PDT             4.9            240                        Normal
  09/26/2023 09 AM PDT             4.9            238         -              Normal
  09/26/2023 10 AM PDT             4.9            235         -              Normal
  09/26/2023 11 AM PDT             4.9            233         -              Normal
  09/26/2023 12 PM PDT             4.9            233         0              Normal
  09/26/2023 01 PM PDT             4.9            235         +              Normal
  09/26/2023 02 PM PDT             4.9            235         0              Normal
  09/26/2023 03 PM PDT             4.9            238         +              Normal
  09/26/2023 04 PM PDT             4.9            235         -              Normal
  09/26/2023 05 PM PDT             4.9            235         0              Normal
  09/26/2023 06 PM PDT             4.9            233         -              Normal
  09/26/2023 07 PM PDT             4.9            233         0              Normal
  09/26/2023 08 PM PDT             4.8            231         -              Normal
  09/26/2023 09 PM PDT             4.9            233         +              Normal
  09/26/2023 10 PM PDT             4.9            233         0              Normal
  09/26/2023 11 PM PDT             4.9            233         0              Normal
  09/27/2023 12 AM PDT             4.8            231         -              Normal
  09/27/2023 01 AM PDT             4.8            228         -              Normal
  09/27/2023 02 AM PDT             4.8            228         0              Normal
  09/27/2023 03 AM PDT             4.8            226         -              Normal
  09/27/2023 04 AM PDT             4.8            224         -              Normal
  09/27/2023 05 AM PDT             4.8            224         0              Normal
  09/27/2023 06 AM PDT             4.8            224         0              Normal
  09/27/2023 07 AM PDT             4.8            222         -              Normal
  09/27/2023 08 AM PDT             4.8            222         0              Normal
  09/27/2023 09 AM PDT             4.8            224         +              Normal
  09/27/2023 10 AM PDT             4.8            224         0              Normal
  09/27/2023 11 AM PDT             4.8            228         +              Normal
  09/27/2023 12 PM PDT             4.8            228         0              Normal
  09/27/2023 01 PM PDT             4.8            228         0              Normal
  09/27/2023 02 PM PDT             4.8            224         -              Normal
  09/27/2023 03 PM PDT             4.8            226         +              Normal
  09/27/2023 04 PM PDT             4.8            224         -              Normal
  09/27/2023 05 PM PDT             4.8            226         +              Normal
  09/27/2023 06 PM PDT             4.8            224         -              Normal
  09/27/2023 07 PM PDT             4.8            224         0              Normal
  09/27/2023 08 PM PDT             4.8            226         +              Normal
  09/27/2023 09 PM PDT             4.8            226         0              Normal
  09/27/2023 10 PM PDT             4.8            228         +              Normal
  09/27/2023 11 PM PDT             4.8            231         +              Normal
  09/28/2023 12 AM PDT             4.8            231         0              Normal
  09/28/2023 01 AM PDT             4.8            231         0              Normal
  09/28/2023 02 AM PDT             4.8            231         0              Normal
  09/28/2023 03 AM PDT             4.8            231         0              Normal
  09/28/2023 04 AM PDT             4.8            231         0              Normal
  09/28/2023 05 AM PDT             4.8            228         -              Normal
  09/28/2023 06 AM PDT             4.8            228         0              Normal
  09/28/2023 07 AM PDT             4.8            226         -              Normal
  09/28/2023 08 AM PDT             4.8            226         0              Normal
  09/28/2023 09 AM PDT             4.8            226         0              Normal
  09/28/2023 10 AM PDT             4.8            226         0              Normal
  09/28/2023 11 AM PDT             4.8            226         0              Normal
  09/28/2023 12 PM PDT             4.8            226         0              Normal
  09/28/2023 01 PM PDT             4.8            226         0              Normal
  09/28/2023 02 PM PDT             4.8            226         0              Normal
  09/28/2023 03 PM PDT             4.8            228         +              Normal
  09/28/2023 04 PM PDT             4.9            233         +              Normal
  09/28/2023 05 PM PDT             4.9            233         0              Normal
  09/28/2023 06 PM PDT             4.9            233         0              Normal
  09/28/2023 07 PM PDT             4.9            238         +              Normal
  09/28/2023 08 PM PDT             4.9            238         0              Normal
  09/28/2023 09 PM PDT             4.9            238         0              Normal
  09/28/2023 10 PM PDT             4.9            240         +              Normal
  09/28/2023 11 PM PDT             4.9            242         +              Normal
  09/29/2023 12 AM PDT             4.9            242         0              Normal
  09/29/2023 01 AM PDT             4.9            240         -              Normal
  09/29/2023 02 AM PDT             4.9            240         0              Normal
  09/29/2023 03 AM PDT             4.9            240         0              Normal
  09/29/2023 04 AM PDT             4.9            240         0              Normal
  09/29/2023 05 AM PDT             4.9            245         +              Normal
  09/29/2023 06 AM PDT             4.9            245         0              Normal
  09/29/2023 07 AM PDT             4.9            242         -              Normal
  09/29/2023 08 AM PDT             4.9            242         0              Normal
  09/29/2023 09 AM PDT             4.9            245         +              Normal
  09/29/2023 10 AM PDT             4.9            245         0              Normal
  09/29/2023 11 AM PDT             4.9            247         +              Normal
  09/29/2023 12 PM PDT             4.9            252         +              Normal
  09/29/2023 01 PM PDT             4.9            249         -              Normal
  09/29/2023 02 PM PDT             4.9            252         +              Normal
  09/29/2023 03 PM PDT             4.9            249         -              Normal
  09/29/2023 04 PM PDT             4.9            249         0              Normal
  09/29/2023 05 PM PDT             4.9            252         +              Normal
  09/29/2023 06 PM PDT             5.0            254         +              Normal
  09/29/2023 07 PM PDT             5.0            254         0              Normal
  09/29/2023 08 PM PDT             5.0            256         +              Normal
  09/29/2023 09 PM PDT             5.0            256         0              Normal
  09/29/2023 10 PM PDT             5.0            256         0              Normal
  09/29/2023 11 PM PDT             5.0            256         0              Normal
  09/30/2023 12 AM PDT             5.0            254         -              Normal
  09/30/2023 01 AM PDT             4.9            252         -              Normal
  09/30/2023 02 AM PDT             4.9            249         -              Normal
  09/30/2023 03 AM PDT             4.9            252         +              Normal
  09/30/2023 04 AM PDT             4.9            249         -              Normal
  09/30/2023 05 AM PDT             4.9            249         0              Normal
  09/30/2023 06 AM PDT             4.9            249         0              Normal
  09/30/2023 07 AM PDT             4.9            249         0              Normal
  09/30/2023 08 AM PDT             4.9            249         0              Normal
  09/30/2023 09 AM PDT             4.9            249         0              Normal
  09/30/2023 10 AM PDT             4.9            249         0              Normal
  09/30/2023 11 AM PDT             4.9            249         0              Normal
  09/30/2023 12 PM PDT             4.9            249         0              Normal
  09/30/2023 01 PM PDT             4.9            247         -              Normal
  09/30/2023 02 PM PDT             4.9            249         +              Normal
  09/30/2023 03 PM PDT             4.9            249         0              Normal
  09/30/2023 04 PM PDT             4.9            249         0              Normal
  09/30/2023 05 PM PDT             4.9            249         0              Normal
  09/30/2023 06 PM PDT             4.9            252         +              Normal
  09/30/2023 07 PM PDT             4.9            249         -              Normal
  09/30/2023 08 PM PDT             4.9            252         +              Normal
  09/30/2023 09 PM PDT             5.0            254         +              Normal
  09/30/2023 10 PM PDT             5.0            254         0              Normal
  09/30/2023 11 PM PDT             5.0            254         0              Normal
  10/01/2023 12 AM PDT             5.0            256         +              Normal
  10/01/2023 01 AM PDT             5.0            256         0              Normal
  10/01/2023 02 AM PDT             5.0            259         +              Normal
  10/01/2023 03 AM PDT             5.0            261         +              Normal
  10/01/2023 04 AM PDT             5.0            264         +              Normal
  10/01/2023 05 AM PDT             5.0            264         0              Normal
  10/01/2023 06 AM PDT             5.0            266         +              Normal
  10/01/2023 07 AM PDT             5.0            269         +              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  10/01/2023 08 AM PDT             5.0            269                        Normal
  10/01/2023 09 AM PDT             5.0            271         +              Normal
  10/01/2023 10 AM PDT             5.0            269         -              Normal
  10/01/2023 11 AM PDT             5.0            269         0              Normal
  10/01/2023 12 PM PDT             5.0            266         -              Normal
  10/01/2023 01 PM PDT             5.0            266         0              Normal
  10/01/2023 02 PM PDT             5.0            266         0              Normal
  10/01/2023 03 PM PDT             5.0            266         0              Normal
  10/01/2023 04 PM PDT             5.0            266         0              Normal
  10/01/2023 05 PM PDT             5.0            266         0              Normal
  10/01/2023 06 PM PDT             5.0            271         +              Normal
  10/01/2023 07 PM PDT             5.0            271         0              Normal
  10/01/2023 08 PM PDT             5.0            269         -              Normal
  10/01/2023 09 PM PDT             5.0            269         0              Normal
  10/01/2023 10 PM PDT             5.0            266         -              Normal
  10/01/2023 11 PM PDT             5.0            266         0              Normal
  10/02/2023 12 AM PDT             5.0            264         -              Normal
  10/02/2023 01 AM PDT             5.0            264         0              Normal
  10/02/2023 02 AM PDT             5.0            261         -              Normal
  10/02/2023 03 AM PDT             5.0            259         -              Normal
  10/02/2023 04 AM PDT             5.0            259         0              Normal
  10/02/2023 05 AM PDT             5.0            256         -              Normal
  10/02/2023 06 AM PDT             5.0            254         -              Normal
  10/02/2023 07 AM PDT             5.0            254         0              Normal
  10/02/2023 08 AM PDT             4.9            252         -              Normal
  10/02/2023 09 AM PDT             4.9            252         0              Normal
  10/02/2023 10 AM PDT             4.9            249         -              Normal
  10/02/2023 11 AM PDT             4.9            249         0              Normal
  10/02/2023 12 PM PDT             4.9            247         -              Normal
  10/02/2023 01 PM PDT             4.9            247         0              Normal
  10/02/2023 02 PM PDT             4.9            245         -              Normal
  10/02/2023 03 PM PDT             4.9            245         0              Normal
  10/02/2023 04 PM PDT             4.9            242         -              Normal
  10/02/2023 05 PM PDT             4.9            242         0              Normal
  10/02/2023 06 PM PDT             4.9            245         +              Normal
  10/02/2023 07 PM PDT             4.9            245         0              Normal
  10/02/2023 08 PM PDT             4.9            242         -              Normal
  10/02/2023 09 PM PDT             4.9            242         0              Normal
  10/02/2023 10 PM PDT             4.9            242         0              Normal
  10/02/2023 11 PM PDT             4.9            242         0              Normal
  10/03/2023 12 AM PDT             4.9            242         0              Normal
  10/03/2023 01 AM PDT             4.9            242         0              Normal
  10/03/2023 02 AM PDT             4.9            240         -              Normal
  10/03/2023 03 AM PDT             4.9            240         0              Normal
  10/03/2023 04 AM PDT             4.9            240         0              Normal
  10/03/2023 05 AM PDT             4.9            240         0              Normal
  10/03/2023 06 AM PDT             4.9            238         -              Normal
  10/03/2023 07 AM PDT             4.9            238         0              Normal
  10/03/2023 08 AM PDT             4.9            238         0              Normal
  10/03/2023 09 AM PDT             4.9            238         0              Normal
  10/03/2023 10 AM PDT             4.9            238         0              Normal
  10/03/2023 11 AM PDT             4.9            235         -              Normal
  10/03/2023 12 PM PDT             4.9            235         0              Normal
  10/03/2023 01 PM PDT             4.9            235         0              Normal
  10/03/2023 02 PM PDT             4.9            235         0              Normal
  10/03/2023 03 PM PDT             4.9            235         0              Normal
  10/03/2023 04 PM PDT             4.9            235         0              Normal
  10/03/2023 05 PM PDT             4.9            235         0              Normal
  10/03/2023 06 PM PDT             4.9            238         +              Normal
  10/03/2023 07 PM PDT             4.9            238         0              Normal
  10/03/2023 08 PM PDT             4.9            238         0              Normal
  10/03/2023 09 PM PDT             4.9            238         0              Normal
  10/03/2023 10 PM PDT             4.9            238         0              Normal
  10/03/2023 11 PM PDT             4.9            238         0              Normal
  10/04/2023 12 AM PDT             4.9            238         0              Normal
  10/04/2023 01 AM PDT             4.9            238         0              Normal
  10/04/2023 02 AM PDT             4.9            240         +              Normal
  10/04/2023 03 AM PDT             4.9            240         0              Normal
  10/04/2023 04 AM PDT             4.9            240         0              Normal
  10/04/2023 05 AM PDT             4.9            240         0              Normal
  10/04/2023 06 AM PDT             4.9            240         0              Normal
  10/04/2023 07 AM PDT             4.9            238         -              Normal
  10/04/2023 08 AM PDT             4.9            238         0              Normal
  10/04/2023 09 AM PDT             4.9            238         0              Normal
  10/04/2023 10 AM PDT             4.9            238         0              Normal
  10/04/2023 11 AM PDT             4.9            238         0              Normal
  10/04/2023 12 PM PDT             4.9            238         0              Normal
  10/04/2023 01 PM PDT             4.9            238         0              Normal
  10/04/2023 02 PM PDT             4.9            238         0              Normal
  10/04/2023 03 PM PDT             4.9            238         0              Normal
  10/04/2023 04 PM PDT             4.9            238         0              Normal
  10/04/2023 05 PM PDT             4.9            238         0              Normal
  10/04/2023 06 PM PDT             4.9            242         +              Normal
  10/04/2023 07 PM PDT             4.9            242         0              Normal
  10/04/2023 08 PM PDT             4.9            242         0              Normal
  10/04/2023 09 PM PDT             4.9            242         0              Normal
  10/04/2023 10 PM PDT             4.9            242         0              Normal
  10/04/2023 11 PM PDT             4.9            245         +              Normal
  10/05/2023 12 AM PDT             4.9            245         0              Normal
  10/05/2023 01 AM PDT             4.9            245         0              Normal
  10/05/2023 02 AM PDT             4.9            245         0              Normal
  10/05/2023 03 AM PDT             4.9            245         0              Normal
  10/05/2023 04 AM PDT             4.9            245         0              Normal
  10/05/2023 05 AM PDT             4.9            245         0              Normal
  10/05/2023 06 AM PDT             4.9            245         0              Normal
  10/05/2023 07 AM PDT             4.9            245         0              Normal
  10/05/2023 08 AM PDT             4.9            245         0              Normal
  10/05/2023 09 AM PDT             4.9            245         0              Normal
  10/05/2023 10 AM PDT             4.9            245         0              Normal
  10/05/2023 11 AM PDT             4.9            245         0              Normal
  10/05/2023 12 PM PDT             4.9            245         0              Normal
  10/05/2023 01 PM PDT             4.9            245         0              Normal
  10/05/2023 02 PM PDT             4.9            245         0              Normal
  10/05/2023 03 PM PDT             4.9            245         0              Normal
  10/05/2023 04 PM PDT             4.9            245         0              Normal
  10/05/2023 05 PM PDT             4.9            245         0              Normal
  10/05/2023 06 PM PDT             4.9            249         +              Normal
  10/05/2023 07 PM PDT             4.9            249         0              Normal
  10/05/2023 08 PM PDT             4.9            249         0              Normal
  10/05/2023 09 PM PDT             4.9            249         0              Normal
  10/05/2023 10 PM PDT             4.9            249         0              Normal
  10/05/2023 11 PM PDT             4.9            249         0              Normal
  10/06/2023 12 AM PDT             4.9            249         0              Normal
  10/06/2023 01 AM PDT             4.9            252         +              Normal
  10/06/2023 02 AM PDT             4.9            252         0              Normal
  10/06/2023 03 AM PDT             4.9            252         0              Normal
  10/06/2023 04 AM PDT             4.9            252         0              Normal
  10/06/2023 05 AM PDT             4.9            252         0              Normal
#
# NOTE 1: Stages are rounded to the nearest tenth (.1) 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.