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: May 30 2023 at 8:27 AM PDTNext Issuance: May 31 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:  05/30/2023 at 08:27 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/25/2023 at 10:00 PM PDT
# Maximum Observed Stage:                       11.3 Feet
# Maximum Observed Flow:                        3543 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/30/2023 at 09:00 AM PDT
# Maximum Forecast Stage:                       11.1 Feet
# Maximum Forecast Flow:                        3371 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/25/2023 08 AM PDT            11.1           3333                   Above Flood
  05/25/2023 09 AM PDT            11.1           3341         +         Above Flood
  05/25/2023 10 AM PDT            11.1           3356         +         Above Flood
  05/25/2023 11 AM PDT            11.1           3371         +         Above Flood
  05/25/2023 12 PM PDT            11.1           3387         +         Above Flood
  05/25/2023 01 PM PDT            11.1           3387         0         Above Flood
  05/25/2023 02 PM PDT            11.2           3418         +         Above Flood
  05/25/2023 03 PM PDT            11.2           3457         +         Above Flood
  05/25/2023 04 PM PDT            11.2           3449         -         Above Flood
  05/25/2023 05 PM PDT            11.2           3449         0         Above Flood
  05/25/2023 06 PM PDT            11.2           3457         +         Above Flood
  05/25/2023 07 PM PDT            11.2           3488         +         Above Flood
  05/25/2023 08 PM PDT            11.3           3520         +         Above Flood
  05/25/2023 09 PM PDT            11.3           3520         0         Above Flood
  05/25/2023 10 PM PDT            11.3           3543         +         Above Flood
  05/25/2023 11 PM PDT            11.3           3504         -         Above Flood
  05/26/2023 12 AM PDT            11.3           3504         0         Above Flood
  05/26/2023 01 AM PDT            11.3           3504         0         Above Flood
  05/26/2023 02 AM PDT            11.3           3512         +         Above Flood
  05/26/2023 03 AM PDT            11.3           3512         0         Above Flood
  05/26/2023 04 AM PDT            11.3           3512         0         Above Flood
  05/26/2023 05 AM PDT            11.2           3480         -         Above Flood
  05/26/2023 06 AM PDT            11.2           3465         -         Above Flood
  05/26/2023 07 AM PDT            11.2           3472         +         Above Flood
  05/26/2023 08 AM PDT            11.2           3457         -         Above Flood
  05/26/2023 09 AM PDT            11.2           3441         -         Above Flood
  05/26/2023 10 AM PDT            11.2           3441         0         Above Flood
  05/26/2023 11 AM PDT            11.2           3433         -         Above Flood
  05/26/2023 12 PM PDT            11.2           3433         0         Above Flood
  05/26/2023 01 PM PDT            11.2           3433         0         Above Flood
  05/26/2023 02 PM PDT            11.2           3418         -         Above Flood
  05/26/2023 03 PM PDT            11.1           3395         -         Above Flood
  05/26/2023 04 PM PDT            11.1           3402         +         Above Flood
  05/26/2023 05 PM PDT            11.1           3402         0         Above Flood
  05/26/2023 06 PM PDT            11.1           3402         0         Above Flood
  05/26/2023 07 PM PDT            11.1           3395         -         Above Flood
  05/26/2023 08 PM PDT            11.1           3379         -         Above Flood
  05/26/2023 09 PM PDT            11.2           3418         +         Above Flood
  05/26/2023 10 PM PDT            11.1           3379         -         Above Flood
  05/26/2023 11 PM PDT            11.1           3379         0         Above Flood
  05/27/2023 12 AM PDT            11.1           3379         0         Above Flood
  05/27/2023 01 AM PDT            11.1           3356         -         Above Flood
  05/27/2023 02 AM PDT            11.1           3356         0         Above Flood
  05/27/2023 03 AM PDT            11.1           3371         +         Above Flood
  05/27/2023 04 AM PDT            11.1           3371         0         Above Flood
  05/27/2023 05 AM PDT            11.1           3364         -         Above Flood
  05/27/2023 06 AM PDT            11.1           3341         -         Above Flood
  05/27/2023 07 AM PDT            11.1           3333         -         Above Flood
  05/27/2023 08 AM PDT            11.0           3325         -         Above Flood
  05/27/2023 09 AM PDT            11.1           3356         +         Above Flood
  05/27/2023 10 AM PDT            11.0           3302         -         Above Flood
  05/27/2023 11 AM PDT            11.0           3318         +         Above Flood
  05/27/2023 12 PM PDT            11.0           3318         0         Above Flood
  05/27/2023 01 PM PDT            11.0           3318         0         Above Flood
  05/27/2023 02 PM PDT            11.0           3302         -         Above Flood
  05/27/2023 03 PM PDT            11.0           3310         +         Above Flood
  05/27/2023 04 PM PDT            11.0           3310         0         Above Flood
  05/27/2023 05 PM PDT            11.0           3310         0         Above Flood
  05/27/2023 06 PM PDT            11.0           3325         +         Above Flood
  05/27/2023 07 PM PDT            11.0           3302         -         Above Flood
  05/27/2023 08 PM PDT            11.0           3318         +         Above Flood
  05/27/2023 09 PM PDT            11.0           3302         -         Above Flood
  05/27/2023 10 PM PDT            11.0           3325         +         Above Flood
  05/27/2023 11 PM PDT            11.0           3325         0         Above Flood
  05/28/2023 12 AM PDT            11.1           3348         +         Above Flood
  05/28/2023 01 AM PDT            11.0           3325         -         Above Flood
  05/28/2023 02 AM PDT            11.1           3333         +         Above Flood
  05/28/2023 03 AM PDT            11.1           3333         0         Above Flood
  05/28/2023 04 AM PDT            11.1           3356         +         Above Flood
  05/28/2023 05 AM PDT            11.1           3387         +         Above Flood
  05/28/2023 06 AM PDT            11.1           3348         -         Above Flood
  05/28/2023 07 AM PDT            11.1           3379         +         Above Flood
  05/28/2023 08 AM PDT            11.1           3371         -         Above Flood
  05/28/2023 09 AM PDT            11.1           3364         -         Above Flood
  05/28/2023 10 AM PDT            11.1           3356         -         Above Flood
  05/28/2023 11 AM PDT            11.1           3364         +         Above Flood
  05/28/2023 12 PM PDT            11.1           3371         +         Above Flood
  05/28/2023 01 PM PDT            11.1           3379         +         Above Flood
  05/28/2023 02 PM PDT            11.1           3387         +         Above Flood
  05/28/2023 03 PM PDT            11.1           3395         +         Above Flood
  05/28/2023 04 PM PDT            11.1           3379         -         Above Flood
  05/28/2023 05 PM PDT            11.1           3364         -         Above Flood
  05/28/2023 06 PM PDT            11.1           3348         -         Above Flood
  05/28/2023 07 PM PDT            11.1           3348         0         Above Flood
  05/28/2023 08 PM PDT            11.1           3356         +         Above Flood
  05/28/2023 09 PM PDT            11.1           3348         -         Above Flood
  05/28/2023 10 PM PDT            11.1           3341         -         Above Flood
  05/28/2023 11 PM PDT            11.1           3341         0         Above Flood
  05/29/2023 12 AM PDT            11.1           3387         +         Above Flood
  05/29/2023 01 AM PDT            11.1           3364         -         Above Flood
  05/29/2023 02 AM PDT            11.1           3356         -         Above Flood
  05/29/2023 03 AM PDT            11.1           3341         -         Above Flood
  05/29/2023 04 AM PDT            11.1           3364         +         Above Flood
  05/29/2023 05 AM PDT            11.1           3364         0         Above Flood
  05/29/2023 06 AM PDT            11.1           3348         -         Above Flood
  05/29/2023 07 AM PDT            11.1           3341         -         Above Flood
  05/29/2023 08 AM PDT            11.1           3341         0         Above Flood
  05/29/2023 09 AM PDT            11.1           3333         -         Above Flood
  05/29/2023 10 AM PDT            11.1           3341         +         Above Flood
  05/29/2023 11 AM PDT            11.1           3333         -         Above Flood
  05/29/2023 12 PM PDT            11.0           3325         -         Above Flood
  05/29/2023 01 PM PDT            11.1           3348         +         Above Flood
  05/29/2023 02 PM PDT            11.1           3341         -         Above Flood
  05/29/2023 03 PM PDT            11.1           3371         +         Above Flood
  05/29/2023 04 PM PDT            11.1           3356         -         Above Flood
  05/29/2023 05 PM PDT            11.1           3371         +         Above Flood
  05/29/2023 06 PM PDT            11.1           3356         -         Above Flood
  05/29/2023 07 PM PDT            11.1           3379         +         Above Flood
  05/29/2023 08 PM PDT            11.1           3371         -         Above Flood
  05/29/2023 09 PM PDT            11.1           3387         +         Above Flood
  05/29/2023 10 PM PDT            11.1           3387         0         Above Flood
  05/29/2023 11 PM PDT            11.2           3410         +         Above Flood
  05/30/2023 12 AM PDT            11.2           3418         +         Above Flood
  05/30/2023 01 AM PDT            11.1           3387         -         Above Flood
  05/30/2023 02 AM PDT            11.1           3395         +         Above Flood
  05/30/2023 03 AM PDT            11.1           3379         -         Above Flood
  05/30/2023 04 AM PDT            11.1           3371         -         Above Flood
  05/30/2023 05 AM PDT            11.1           3387         +         Above Flood
  05/30/2023 06 AM PDT            11.1           3387         0         Above Flood
  05/30/2023 07 AM PDT            11.1           3379         -         Above Flood
  05/30/2023 08 AM PDT            11.1           3379         0         Above Flood
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/30/2023 09 AM PDT            11.1           3371                   Above Flood
  05/30/2023 10 AM PDT            11.1           3371         0         Above Flood
  05/30/2023 11 AM PDT            11.1           3371         0         Above Flood
  05/30/2023 12 PM PDT            11.1           3364         -         Above Flood
  05/30/2023 01 PM PDT            11.1           3364         0         Above Flood
  05/30/2023 02 PM PDT            11.1           3356         -         Above Flood
  05/30/2023 03 PM PDT            11.1           3348         -         Above Flood
  05/30/2023 04 PM PDT            11.1           3348         0         Above Flood
  05/30/2023 05 PM PDT            11.1           3341         -         Above Flood
  05/30/2023 06 PM PDT            11.1           3341         0         Above Flood
  05/30/2023 07 PM PDT            11.1           3333         -         Above Flood
  05/30/2023 08 PM PDT            11.1           3333         0         Above Flood
  05/30/2023 09 PM PDT            11.1           3333         0         Above Flood
  05/30/2023 10 PM PDT            11.0           3325         -         Above Flood
  05/30/2023 11 PM PDT            11.0           3325         0         Above Flood
  05/31/2023 12 AM PDT            11.0           3325         0         Above Flood
  05/31/2023 01 AM PDT            11.1           3333         +         Above Flood
  05/31/2023 02 AM PDT            11.1           3333         0         Above Flood
  05/31/2023 03 AM PDT            11.1           3333         0         Above Flood
  05/31/2023 04 AM PDT            11.1           3341         +         Above Flood
  05/31/2023 05 AM PDT            11.1           3341         0         Above Flood
  05/31/2023 06 AM PDT            11.1           3341         0         Above Flood
  05/31/2023 07 AM PDT            11.1           3348         +         Above Flood
  05/31/2023 08 AM PDT            11.1           3348         0         Above Flood
  05/31/2023 09 AM PDT            11.1           3356         +         Above Flood
  05/31/2023 10 AM PDT            11.1           3356         0         Above Flood
  05/31/2023 11 AM PDT            11.1           3356         0         Above Flood
  05/31/2023 12 PM PDT            11.1           3364         +         Above Flood
  05/31/2023 01 PM PDT            11.1           3364         0         Above Flood
  05/31/2023 02 PM PDT            11.1           3364         0         Above Flood
  05/31/2023 03 PM PDT            11.1           3364         0         Above Flood
  05/31/2023 04 PM PDT            11.1           3364         0         Above Flood
  05/31/2023 05 PM PDT            11.1           3356         -         Above Flood
  05/31/2023 06 PM PDT            11.1           3356         0         Above Flood
  05/31/2023 07 PM PDT            11.1           3356         0         Above Flood
  05/31/2023 08 PM PDT            11.1           3348         -         Above Flood
  05/31/2023 09 PM PDT            11.1           3348         0         Above Flood
  05/31/2023 10 PM PDT            11.1           3348         0         Above Flood
  05/31/2023 11 PM PDT            11.1           3341         -         Above Flood
  06/01/2023 12 AM PDT            11.1           3341         0         Above Flood
  06/01/2023 01 AM PDT            11.1           3341         0         Above Flood
  06/01/2023 02 AM PDT            11.1           3341         0         Above Flood
  06/01/2023 03 AM PDT            11.1           3341         0         Above Flood
  06/01/2023 04 AM PDT            11.1           3341         0         Above Flood
  06/01/2023 05 AM PDT            11.1           3341         0         Above Flood
  06/01/2023 06 AM PDT            11.1           3341         0         Above Flood
  06/01/2023 07 AM PDT            11.1           3341         0         Above Flood
  06/01/2023 08 AM PDT            11.1           3348         +         Above Flood
  06/01/2023 09 AM PDT            11.1           3348         0         Above Flood
  06/01/2023 10 AM PDT            11.1           3348         0         Above Flood
  06/01/2023 11 AM PDT            11.1           3348         0         Above Flood
  06/01/2023 12 PM PDT            11.1           3356         +         Above Flood
  06/01/2023 01 PM PDT            11.1           3356         0         Above Flood
  06/01/2023 02 PM PDT            11.1           3348         -         Above Flood
  06/01/2023 03 PM PDT            11.1           3348         0         Above Flood
  06/01/2023 04 PM PDT            11.1           3348         0         Above Flood
  06/01/2023 05 PM PDT            11.1           3348         0         Above Flood
  06/01/2023 06 PM PDT            11.1           3341         -         Above Flood
  06/01/2023 07 PM PDT            11.1           3341         0         Above Flood
  06/01/2023 08 PM PDT            11.1           3333         -         Above Flood
  06/01/2023 09 PM PDT            11.1           3333         0         Above Flood
  06/01/2023 10 PM PDT            11.1           3333         0         Above Flood
  06/01/2023 11 PM PDT            11.0           3325         -         Above Flood
  06/02/2023 12 AM PDT            11.0           3325         0         Above Flood
  06/02/2023 01 AM PDT            11.0           3325         0         Above Flood
  06/02/2023 02 AM PDT            11.0           3325         0         Above Flood
  06/02/2023 03 AM PDT            11.0           3325         0         Above Flood
  06/02/2023 04 AM PDT            11.0           3325         0         Above Flood
  06/02/2023 05 AM PDT            11.0           3325         0         Above Flood
  06/02/2023 06 AM PDT            11.0           3325         0         Above Flood
  06/02/2023 07 AM PDT            11.1           3333         +         Above Flood
  06/02/2023 08 AM PDT            11.1           3333         0         Above Flood
  06/02/2023 09 AM PDT            11.1           3333         0         Above Flood
  06/02/2023 10 AM PDT            11.1           3333         0         Above Flood
  06/02/2023 11 AM PDT            11.1           3341         +         Above Flood
  06/02/2023 12 PM PDT            11.1           3341         0         Above Flood
  06/02/2023 01 PM PDT            11.1           3341         0         Above Flood
  06/02/2023 02 PM PDT            11.1           3341         0         Above Flood
  06/02/2023 03 PM PDT            11.1           3333         -         Above Flood
  06/02/2023 04 PM PDT            11.1           3333         0         Above Flood
  06/02/2023 05 PM PDT            11.1           3333         0         Above Flood
  06/02/2023 06 PM PDT            11.0           3325         -         Above Flood
  06/02/2023 07 PM PDT            11.0           3325         0         Above Flood
  06/02/2023 08 PM PDT            11.0           3318         -         Above Flood
  06/02/2023 09 PM PDT            11.0           3318         0         Above Flood
  06/02/2023 10 PM PDT            11.0           3310         -         Above Flood
  06/02/2023 11 PM PDT            11.0           3310         0         Above Flood
  06/03/2023 12 AM PDT            11.0           3302         -         Above Flood
  06/03/2023 01 AM PDT            11.0           3302         0         Above Flood
  06/03/2023 02 AM PDT            11.0           3302         0         Above Flood
  06/03/2023 03 AM PDT            11.0           3302         0         Above Flood
  06/03/2023 04 AM PDT            11.0           3302         0         Above Flood
  06/03/2023 05 AM PDT            11.0           3302         0         Above Flood
  06/03/2023 06 AM PDT            11.0           3310         +         Above Flood
  06/03/2023 07 AM PDT            11.0           3310         0         Above Flood
  06/03/2023 08 AM PDT            11.0           3310         0         Above Flood
  06/03/2023 09 AM PDT            11.0           3310         0         Above Flood
  06/03/2023 10 AM PDT            11.0           3318         +         Above Flood
  06/03/2023 11 AM PDT            11.0           3318         0         Above Flood
  06/03/2023 12 PM PDT            11.0           3318         0         Above Flood
  06/03/2023 01 PM PDT            11.0           3318         0         Above Flood
  06/03/2023 02 PM PDT            11.0           3310         -         Above Flood
  06/03/2023 03 PM PDT            11.0           3310         0         Above Flood
  06/03/2023 04 PM PDT            11.0           3310         0         Above Flood
  06/03/2023 05 PM PDT            11.0           3302         -         Above Flood
  06/03/2023 06 PM PDT            11.0           3302         0         Above Flood
  06/03/2023 07 PM PDT            11.0           3295         -         Above Flood
  06/03/2023 08 PM PDT            11.0           3287         -         Above Flood
  06/03/2023 09 PM PDT            11.0           3287         0         Above Flood
  06/03/2023 10 PM PDT            11.0           3279         -         Above Flood
  06/03/2023 11 PM PDT            11.0           3279         0         Above Flood
  06/04/2023 12 AM PDT            11.0           3279         0         Above Flood
  06/04/2023 01 AM PDT            11.0           3272         -         Above Flood
  06/04/2023 02 AM PDT            11.0           3272         0         Above Flood
  06/04/2023 03 AM PDT            11.0           3272         0         Above Flood
  06/04/2023 04 AM PDT            11.0           3272         0         Above Flood
  06/04/2023 05 AM PDT            11.0           3279         +         Above Flood
#
# 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.