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

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WEST WALKER RIVER - BELOW LITTLE WALKER RIVER NEAR COLEVILLE (WWBC1)
Latitude: 38.38º NLongitude: 119.45º WElevation: 6591 FeetForecast Type: Official Location
Location: Mono County in CaliforniaBulletin Group: Eastern SierraRiver Group: Eastern Sierra
Issuance Time: Mar 16 2026 at 2:46 PM PDTNext Issuance: Mar 17 2026 at 9:00 AM PDT
Action/Monitor: 5.5 FeetMinor Flood: 6.0 FeetModerate Flood: 6.8 FeetMajor Flood: 7.3 Feet


# Tabular Observed and Forecast Hydrograph Information
#
# Location: West Walker River - Blo Ltl Walker Nr Coleville (WWBC1)
#
# File Generation Time:  03/16/2026 at 02:47 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  03/16/2026 at 01:00 AM PDT
# Maximum Observed Stage:                       2.47 Feet
# Maximum Observed Flow:                        349 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/21/2026 at 04:00 AM PDT
# Maximum Forecast Stage:                       3.72 Feet
# Maximum Forecast Flow:                        886 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  03/11/2026 02 PM PDT            2.06            230                        Normal
  03/11/2026 03 PM PDT            2.06            230         0              Normal
  03/11/2026 04 PM PDT            2.06            230         0              Normal
  03/11/2026 05 PM PDT            2.06            230         0              Normal
  03/11/2026 06 PM PDT            2.06            230         0              Normal
  03/11/2026 07 PM PDT            2.07            233         +              Normal
  03/11/2026 08 PM PDT            2.08            235         +              Normal
  03/11/2026 09 PM PDT            2.10            240         +              Normal
  03/11/2026 10 PM PDT            2.12            246         +              Normal
  03/11/2026 11 PM PDT            2.13            248         +              Normal
  03/12/2026 12 AM PDT            2.14            251         +              Normal
  03/12/2026 01 AM PDT            2.14            251         0              Normal
  03/12/2026 02 AM PDT            2.14            251         0              Normal
  03/12/2026 03 AM PDT            2.15            254         +              Normal
  03/12/2026 04 AM PDT            2.14            251         -              Normal
  03/12/2026 05 AM PDT            2.14            251         0              Normal
  03/12/2026 06 AM PDT            2.14            251         0              Normal
  03/12/2026 07 AM PDT            2.13            248         -              Normal
  03/12/2026 08 AM PDT            2.13            248         0              Normal
  03/12/2026 09 AM PDT            2.13            248         0              Normal
  03/12/2026 10 AM PDT            2.12            246         -              Normal
  03/12/2026 11 AM PDT            2.11            243         -              Normal
  03/12/2026 12 PM PDT            2.11            243         0              Normal
  03/12/2026 01 PM PDT            2.11            243         0              Normal
  03/12/2026 02 PM PDT            2.11            243         0              Normal
  03/12/2026 03 PM PDT            2.10            240         -              Normal
  03/12/2026 04 PM PDT            2.10            240         0              Normal
  03/12/2026 05 PM PDT            2.10            240         0              Normal
  03/12/2026 06 PM PDT            2.11            243         +              Normal
  03/12/2026 07 PM PDT            2.11            243         0              Normal
  03/12/2026 08 PM PDT            2.14            251         +              Normal
  03/12/2026 09 PM PDT            2.16            256         +              Normal
  03/12/2026 10 PM PDT            2.19            264         +              Normal
  03/12/2026 11 PM PDT            2.20            267         +              Normal
  03/13/2026 12 AM PDT            2.22            273         +              Normal
  03/13/2026 01 AM PDT            2.22            273         0              Normal
  03/13/2026 02 AM PDT            2.22            273         0              Normal
  03/13/2026 03 AM PDT            2.22            273         0              Normal
  03/13/2026 04 AM PDT            2.23            276         +              Normal
  03/13/2026 05 AM PDT            2.22            273         -              Normal
  03/13/2026 06 AM PDT            2.22            273         0              Normal
  03/13/2026 07 AM PDT            2.21            270         -              Normal
  03/13/2026 08 AM PDT            2.21            270         0              Normal
  03/13/2026 09 AM PDT            2.20            267         -              Normal
  03/13/2026 10 AM PDT            2.20            267         0              Normal
  03/13/2026 11 AM PDT            2.19            264         -              Normal
  03/13/2026 12 PM PDT            2.19            264         0              Normal
  03/13/2026 01 PM PDT            2.19            264         0              Normal
  03/13/2026 02 PM PDT            2.18            262         -              Normal
  03/13/2026 03 PM PDT            2.17            259         -              Normal
  03/13/2026 04 PM PDT            2.18            262         +              Normal
  03/13/2026 05 PM PDT            2.17            259         -              Normal
  03/13/2026 06 PM PDT            2.18            262         +              Normal
  03/13/2026 07 PM PDT            2.20            267         +              Normal
  03/13/2026 08 PM PDT            2.21            270         +              Normal
  03/13/2026 09 PM PDT            2.24            278         +              Normal
  03/13/2026 10 PM PDT            2.26            284         +              Normal
  03/13/2026 11 PM PDT            2.28            290         +              Normal
  03/14/2026 12 AM PDT            2.29            293         +              Normal
  03/14/2026 01 AM PDT            2.30            296         +              Normal
  03/14/2026 02 AM PDT            2.30            296         0              Normal
  03/14/2026 03 AM PDT            2.31            299         +              Normal
  03/14/2026 04 AM PDT            2.31            299         0              Normal
  03/14/2026 05 AM PDT            2.30            296         -              Normal
  03/14/2026 06 AM PDT            2.30            296         0              Normal
  03/14/2026 07 AM PDT            2.30            296         0              Normal
  03/14/2026 08 AM PDT            2.29            293         -              Normal
  03/14/2026 09 AM PDT            2.29            293         0              Normal
  03/14/2026 10 AM PDT            2.28            290         -              Normal
  03/14/2026 11 AM PDT            2.28            290         0              Normal
  03/14/2026 12 PM PDT            2.28            290         0              Normal
  03/14/2026 01 PM PDT            2.27            287         -              Normal
  03/14/2026 02 PM PDT            2.25            281         -              Normal
  03/14/2026 03 PM PDT            2.25            281         0              Normal
  03/14/2026 04 PM PDT            2.24            278         -              Normal
  03/14/2026 05 PM PDT            2.25            281         +              Normal
  03/14/2026 06 PM PDT            2.26            284         +              Normal
  03/14/2026 07 PM PDT            2.28            290         +              Normal
  03/14/2026 08 PM PDT            2.31            299         +              Normal
  03/14/2026 09 PM PDT            2.34            308         +              Normal
  03/14/2026 10 PM PDT            2.37            317         +              Normal
  03/14/2026 11 PM PDT            2.38            320         +              Normal
  03/15/2026 12 AM PDT            2.39            323         +              Normal
  03/15/2026 01 AM PDT            2.39            323         0              Normal
  03/15/2026 02 AM PDT            2.40            326         +              Normal
  03/15/2026 03 AM PDT            2.40            326         0              Normal
  03/15/2026 04 AM PDT            2.40            326         0              Normal
  03/15/2026 05 AM PDT            2.39            323         -              Normal
  03/15/2026 06 AM PDT            2.39            323         0              Normal
  03/15/2026 07 AM PDT            2.39            323         0              Normal
  03/15/2026 08 AM PDT            2.37            317         -              Normal
  03/15/2026 09 AM PDT            2.37            317         0              Normal
  03/15/2026 10 AM PDT            2.36            314         -              Normal
  03/15/2026 11 AM PDT            2.35            311         -              Normal
  03/15/2026 12 PM PDT            2.34            308         -              Normal
  03/15/2026 01 PM PDT            2.34            308         0              Normal
  03/15/2026 02 PM PDT            2.33            305         -              Normal
  03/15/2026 03 PM PDT            2.32            302         -              Normal
  03/15/2026 04 PM PDT            2.31            299         -              Normal
  03/15/2026 05 PM PDT            2.32            302         +              Normal
  03/15/2026 06 PM PDT            2.32            302         0              Normal
  03/15/2026 07 PM PDT            2.34            308         +              Normal
  03/15/2026 08 PM PDT            2.36            314         +              Normal
  03/15/2026 09 PM PDT            2.39            323         +              Normal
  03/15/2026 10 PM PDT            2.42            333         +              Normal
  03/15/2026 11 PM PDT            2.44            339         +              Normal
  03/16/2026 12 AM PDT            2.45            342         +              Normal
  03/16/2026 01 AM PDT            2.47            349         +              Normal
  03/16/2026 02 AM PDT            2.46            346         -              Normal
  03/16/2026 03 AM PDT            2.45            342         -              Normal
  03/16/2026 04 AM PDT            2.46            346         +              Normal
  03/16/2026 05 AM PDT            2.46            346         0              Normal
  03/16/2026 06 AM PDT            2.45            342         -              Normal
  03/16/2026 07 AM PDT            2.45            342         0              Normal
  03/16/2026 08 AM PDT            2.44            339         -              Normal
  03/16/2026 09 AM PDT            2.43            336         -              Normal
  03/16/2026 10 AM PDT            2.42            333         -              Normal
  03/16/2026 11 AM PDT            2.42            333         0              Normal
  03/16/2026 12 PM PDT            2.40            326         -              Normal
  03/16/2026 01 PM PDT            2.39            323         -              Normal
  03/16/2026 02 PM PDT            2.39            323         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/16/2026 03 PM PDT            2.38            320                        Normal
  03/16/2026 04 PM PDT            2.39            323         +              Normal
  03/16/2026 05 PM PDT            2.42            333         +              Normal
  03/16/2026 06 PM PDT            2.47            349         +              Normal
  03/16/2026 07 PM PDT            2.51            362         +              Normal
  03/16/2026 08 PM PDT            2.56            379         +              Normal
  03/16/2026 09 PM PDT            2.60            393         +              Normal
  03/16/2026 10 PM PDT            2.65            411         +              Normal
  03/16/2026 11 PM PDT            2.68            422         +              Normal
  03/17/2026 12 AM PDT            2.72            438         +              Normal
  03/17/2026 01 AM PDT            2.74            445         +              Normal
  03/17/2026 02 AM PDT            2.78            461         +              Normal
  03/17/2026 03 AM PDT            2.80            469         +              Normal
  03/17/2026 04 AM PDT            2.83            481         +              Normal
  03/17/2026 05 AM PDT            2.85            489         +              Normal
  03/17/2026 06 AM PDT            2.85            489         0              Normal
  03/17/2026 07 AM PDT            2.84            485         -              Normal
  03/17/2026 08 AM PDT            2.83            481         -              Normal
  03/17/2026 09 AM PDT            2.82            477         -              Normal
  03/17/2026 10 AM PDT            2.80            469         -              Normal
  03/17/2026 11 AM PDT            2.79            465         -              Normal
  03/17/2026 12 PM PDT            2.76            453         -              Normal
  03/17/2026 01 PM PDT            2.75            449         -              Normal
  03/17/2026 02 PM PDT            2.75            449         0              Normal
  03/17/2026 03 PM PDT            2.74            445         -              Normal
  03/17/2026 04 PM PDT            2.75            449         +              Normal
  03/17/2026 05 PM PDT            2.79            465         +              Normal
  03/17/2026 06 PM PDT            2.83            481         +              Normal
  03/17/2026 07 PM PDT            2.88            501         +              Normal
  03/17/2026 08 PM PDT            2.93            520         +              Normal
  03/17/2026 09 PM PDT            2.98            540         +              Normal
  03/17/2026 10 PM PDT            3.02            556         +              Normal
  03/17/2026 11 PM PDT            3.06            572         +              Normal
  03/18/2026 12 AM PDT            3.09            585         +              Normal
  03/18/2026 01 AM PDT            3.11            593         +              Normal
  03/18/2026 02 AM PDT            3.14            606         +              Normal
  03/18/2026 03 AM PDT            3.16            614         +              Normal
  03/18/2026 04 AM PDT            3.18            623         +              Normal
  03/18/2026 05 AM PDT            3.19            627         +              Normal
  03/18/2026 06 AM PDT            3.19            627         0              Normal
  03/18/2026 07 AM PDT            3.17            619         -              Normal
  03/18/2026 08 AM PDT            3.14            606         -              Normal
  03/18/2026 09 AM PDT            3.12            597         -              Normal
  03/18/2026 10 AM PDT            3.09            585         -              Normal
  03/18/2026 11 AM PDT            3.05            568         -              Normal
  03/18/2026 12 PM PDT            3.02            556         -              Normal
  03/18/2026 01 PM PDT            3.00            548         -              Normal
  03/18/2026 02 PM PDT            2.99            544         -              Normal
  03/18/2026 03 PM PDT            2.97            536         -              Normal
  03/18/2026 04 PM PDT            2.99            544         +              Normal
  03/18/2026 05 PM PDT            3.02            556         +              Normal
  03/18/2026 06 PM PDT            3.07            576         +              Normal
  03/18/2026 07 PM PDT            3.12            597         +              Normal
  03/18/2026 08 PM PDT            3.17            619         +              Normal
  03/18/2026 09 PM PDT            3.21            636         +              Normal
  03/18/2026 10 PM PDT            3.25            654         +              Normal
  03/18/2026 11 PM PDT            3.28            667         +              Normal
  03/19/2026 12 AM PDT            3.31            681         +              Normal
  03/19/2026 01 AM PDT            3.33            690         +              Normal
  03/19/2026 02 AM PDT            3.36            704         +              Normal
  03/19/2026 03 AM PDT            3.37            709         +              Normal
  03/19/2026 04 AM PDT            3.38            714         +              Normal
  03/19/2026 05 AM PDT            3.39            718         +              Normal
  03/19/2026 06 AM PDT            3.38            714         -              Normal
  03/19/2026 07 AM PDT            3.36            704         -              Normal
  03/19/2026 08 AM PDT            3.33            690         -              Normal
  03/19/2026 09 AM PDT            3.30            676         -              Normal
  03/19/2026 10 AM PDT            3.26            658         -              Normal
  03/19/2026 11 AM PDT            3.23            645         -              Normal
  03/19/2026 12 PM PDT            3.18            623         -              Normal
  03/19/2026 01 PM PDT            3.16            614         -              Normal
  03/19/2026 02 PM PDT            3.16            614         0              Normal
  03/19/2026 03 PM PDT            3.13            601         -              Normal
  03/19/2026 04 PM PDT            3.15            610         +              Normal
  03/19/2026 05 PM PDT            3.19            627         +              Normal
  03/19/2026 06 PM PDT            3.24            649         +              Normal
  03/19/2026 07 PM PDT            3.29            672         +              Normal
  03/19/2026 08 PM PDT            3.34            695         +              Normal
  03/19/2026 09 PM PDT            3.38            714         +              Normal
  03/19/2026 10 PM PDT            3.43            738         +              Normal
  03/19/2026 11 PM PDT            3.46            752         +              Normal
  03/20/2026 12 AM PDT            3.49            767         +              Normal
  03/20/2026 01 AM PDT            3.51            777         +              Normal
  03/20/2026 02 AM PDT            3.54            792         +              Normal
  03/20/2026 03 AM PDT            3.54            792         0              Normal
  03/20/2026 04 AM PDT            3.56            802         +              Normal
  03/20/2026 05 AM PDT            3.57            807         +              Normal
  03/20/2026 06 AM PDT            3.57            807         0              Normal
  03/20/2026 07 AM PDT            3.55            797         -              Normal
  03/20/2026 08 AM PDT            3.52            782         -              Normal
  03/20/2026 09 AM PDT            3.50            772         -              Normal
  03/20/2026 10 AM PDT            3.47            757         -              Normal
  03/20/2026 11 AM PDT            3.43            738         -              Normal
  03/20/2026 12 PM PDT            3.39            718         -              Normal
  03/20/2026 01 PM PDT            3.37            709         -              Normal
  03/20/2026 02 PM PDT            3.37            709         0              Normal
  03/20/2026 03 PM PDT            3.35            700         -              Normal
  03/20/2026 04 PM PDT            3.37            709         +              Normal
  03/20/2026 05 PM PDT            3.41            728         +              Normal
  03/20/2026 06 PM PDT            3.45            747         +              Normal
  03/20/2026 07 PM PDT            3.50            772         +              Normal
  03/20/2026 08 PM PDT            3.55            797         +              Normal
  03/20/2026 09 PM PDT            3.58            812         +              Normal
  03/20/2026 10 PM PDT            3.62            833         +              Normal
  03/20/2026 11 PM PDT            3.65            848         +              Normal
  03/21/2026 12 AM PDT            3.68            864         +              Normal
  03/21/2026 01 AM PDT            3.70            875         +              Normal
  03/21/2026 02 AM PDT            3.71            880         +              Normal
  03/21/2026 03 AM PDT            3.71            880         0              Normal
  03/21/2026 04 AM PDT            3.72            886         +              Normal
  03/21/2026 05 AM PDT            3.72            886         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.