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: Apr 11 2026 at 7:41 AM PDTNext Issuance: Apr 12 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:  04/11/2026 at 07:41 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/11/2026 at 01:00 AM PDT
# Maximum Observed Stage:                       2.70 Feet
# Maximum Observed Flow:                        465 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/11/2026 at 11:00 PM PDT
# Maximum Forecast Stage:                       2.73 Feet
# Maximum Forecast Flow:                        477 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/06/2026 07 AM PDT            2.44            369                        Normal
  04/06/2026 08 AM PDT            2.44            369         0              Normal
  04/06/2026 09 AM PDT            2.43            366         -              Normal
  04/06/2026 10 AM PDT            2.42            362         -              Normal
  04/06/2026 11 AM PDT            2.42            362         0              Normal
  04/06/2026 12 PM PDT            2.42            362         0              Normal
  04/06/2026 01 PM PDT            2.42            362         0              Normal
  04/06/2026 02 PM PDT            2.41            359         -              Normal
  04/06/2026 03 PM PDT            2.40            356         -              Normal
  04/06/2026 04 PM PDT            2.39            352         -              Normal
  04/06/2026 05 PM PDT            2.39            352         0              Normal
  04/06/2026 06 PM PDT            2.40            356         +              Normal
  04/06/2026 07 PM PDT            2.40            356         0              Normal
  04/06/2026 08 PM PDT            2.43            366         +              Normal
  04/06/2026 09 PM PDT            2.46            376         +              Normal
  04/06/2026 10 PM PDT            2.49            386         +              Normal
  04/06/2026 11 PM PDT            2.51            393         +              Normal
  04/07/2026 12 AM PDT            2.52            397         +              Normal
  04/07/2026 01 AM PDT            2.52            397         0              Normal
  04/07/2026 02 AM PDT            2.53            401         +              Normal
  04/07/2026 03 AM PDT            2.53            401         0              Normal
  04/07/2026 04 AM PDT            2.52            397         -              Normal
  04/07/2026 05 AM PDT            2.53            401         +              Normal
  04/07/2026 06 AM PDT            2.53            401         0              Normal
  04/07/2026 07 AM PDT            2.52            397         -              Normal
  04/07/2026 08 AM PDT            2.52            397         0              Normal
  04/07/2026 09 AM PDT            2.51            393         -              Normal
  04/07/2026 10 AM PDT            2.51            393         0              Normal
  04/07/2026 11 AM PDT            2.50            390         -              Normal
  04/07/2026 12 PM PDT            2.50            390         0              Normal
  04/07/2026 01 PM PDT            2.49            386         -              Normal
  04/07/2026 02 PM PDT            2.48            383         -              Normal
  04/07/2026 03 PM PDT            2.47            379         -              Normal
  04/07/2026 04 PM PDT            2.47            379         0              Normal
  04/07/2026 05 PM PDT            2.48            383         +              Normal
  04/07/2026 06 PM PDT            2.47            379         -              Normal
  04/07/2026 07 PM PDT            2.47            379         0              Normal
  04/07/2026 08 PM PDT            2.50            390         +              Normal
  04/07/2026 09 PM PDT            2.52            397         +              Normal
  04/07/2026 10 PM PDT            2.54            404         +              Normal
  04/07/2026 11 PM PDT            2.56            411         +              Normal
  04/08/2026 12 AM PDT            2.57            415         +              Normal
  04/08/2026 01 AM PDT            2.58            419         +              Normal
  04/08/2026 02 AM PDT            2.58            419         0              Normal
  04/08/2026 03 AM PDT            2.58            419         0              Normal
  04/08/2026 04 AM PDT            2.58            419         0              Normal
  04/08/2026 05 AM PDT            2.58            419         0              Normal
  04/08/2026 06 AM PDT            2.57            415         -              Normal
  04/08/2026 07 AM PDT            2.58            419         +              Normal
  04/08/2026 08 AM PDT            2.58            419         0              Normal
  04/08/2026 09 AM PDT            2.56            411         -              Normal
  04/08/2026 10 AM PDT            2.56            411         0              Normal
  04/08/2026 11 AM PDT            2.56            411         0              Normal
  04/08/2026 12 PM PDT            2.55            408         -              Normal
  04/08/2026 01 PM PDT            2.54            404         -              Normal
  04/08/2026 02 PM PDT            2.52            397         -              Normal
  04/08/2026 03 PM PDT            2.52            397         0              Normal
  04/08/2026 04 PM PDT            2.51            393         -              Normal
  04/08/2026 05 PM PDT            2.51            393         0              Normal
  04/08/2026 06 PM PDT            2.51            393         0              Normal
  04/08/2026 07 PM PDT            2.53            401         +              Normal
  04/08/2026 08 PM PDT            2.55            408         +              Normal
  04/08/2026 09 PM PDT            2.58            419         +              Normal
  04/08/2026 10 PM PDT            2.61            430         +              Normal
  04/08/2026 11 PM PDT            2.63            438         +              Normal
  04/09/2026 12 AM PDT            2.64            441         +              Normal
  04/09/2026 01 AM PDT            2.65            445         +              Normal
  04/09/2026 02 AM PDT            2.65            445         0              Normal
  04/09/2026 03 AM PDT            2.66            449         +              Normal
  04/09/2026 04 AM PDT            2.66            449         0              Normal
  04/09/2026 05 AM PDT            2.67            453         +              Normal
  04/09/2026 06 AM PDT            2.66            449         -              Normal
  04/09/2026 07 AM PDT            2.65            445         -              Normal
  04/09/2026 08 AM PDT            2.65            445         0              Normal
  04/09/2026 09 AM PDT            2.65            445         0              Normal
  04/09/2026 10 AM PDT            2.64            441         -              Normal
  04/09/2026 11 AM PDT            2.63            438         -              Normal
  04/09/2026 12 PM PDT            2.62            434         -              Normal
  04/09/2026 01 PM PDT            2.61            430         -              Normal
  04/09/2026 02 PM PDT            2.60            426         -              Normal
  04/09/2026 03 PM PDT            2.60            426         0              Normal
  04/09/2026 04 PM PDT            2.58            419         -              Normal
  04/09/2026 05 PM PDT            2.58            419         0              Normal
  04/09/2026 06 PM PDT            2.58            419         0              Normal
  04/09/2026 07 PM PDT            2.57            415         -              Normal
  04/09/2026 08 PM PDT            2.60            426         +              Normal
  04/09/2026 09 PM PDT            2.60            426         0              Normal
  04/09/2026 10 PM PDT            2.63            438         +              Normal
  04/09/2026 11 PM PDT            2.64            441         +              Normal
  04/10/2026 12 AM PDT            2.65            445         +              Normal
  04/10/2026 01 AM PDT            2.65            445         0              Normal
  04/10/2026 02 AM PDT            2.64            441         -              Normal
  04/10/2026 03 AM PDT            2.65            445         +              Normal
  04/10/2026 04 AM PDT            2.65            445         0              Normal
  04/10/2026 05 AM PDT            2.64            441         -              Normal
  04/10/2026 06 AM PDT            2.65            445         +              Normal
  04/10/2026 07 AM PDT            2.64            441         -              Normal
  04/10/2026 08 AM PDT            2.65            445         +              Normal
  04/10/2026 09 AM PDT            2.64            441         -              Normal
  04/10/2026 10 AM PDT            2.64            441         0              Normal
  04/10/2026 11 AM PDT            2.63            438         -              Normal
  04/10/2026 12 PM PDT            2.61            430         -              Normal
  04/10/2026 01 PM PDT            2.61            430         0              Normal
  04/10/2026 02 PM PDT            2.60            426         -              Normal
  04/10/2026 03 PM PDT            2.60            426         0              Normal
  04/10/2026 04 PM PDT            2.59            422         -              Normal
  04/10/2026 05 PM PDT            2.58            419         -              Normal
  04/10/2026 06 PM PDT            2.60            426         +              Normal
  04/10/2026 07 PM PDT            2.60            426         0              Normal
  04/10/2026 08 PM PDT            2.62            434         +              Normal
  04/10/2026 09 PM PDT            2.63            438         +              Normal
  04/10/2026 10 PM PDT            2.64            441         +              Normal
  04/10/2026 11 PM PDT            2.66            449         +              Normal
  04/11/2026 12 AM PDT            2.68            457         +              Normal
  04/11/2026 01 AM PDT            2.70            465         +              Normal
  04/11/2026 02 AM PDT            2.69            461         -              Normal
  04/11/2026 03 AM PDT            2.69            461         0              Normal
  04/11/2026 04 AM PDT            2.68            457         -              Normal
  04/11/2026 05 AM PDT            2.66            449         -              Normal
  04/11/2026 06 AM PDT            2.66            449         0              Normal
  04/11/2026 07 AM PDT            2.65            445         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/11/2026 08 AM PDT            2.64            441                        Normal
  04/11/2026 09 AM PDT            2.63            438         -              Normal
  04/11/2026 10 AM PDT            2.62            434         -              Normal
  04/11/2026 11 AM PDT            2.62            434         0              Normal
  04/11/2026 12 PM PDT            2.62            434         0              Normal
  04/11/2026 01 PM PDT            2.62            434         0              Normal
  04/11/2026 02 PM PDT            2.62            434         0              Normal
  04/11/2026 03 PM PDT            2.63            438         +              Normal
  04/11/2026 04 PM PDT            2.63            438         0              Normal
  04/11/2026 05 PM PDT            2.64            441         +              Normal
  04/11/2026 06 PM PDT            2.66            449         +              Normal
  04/11/2026 07 PM PDT            2.67            453         +              Normal
  04/11/2026 08 PM PDT            2.69            461         +              Normal
  04/11/2026 09 PM PDT            2.70            465         +              Normal
  04/11/2026 10 PM PDT            2.72            473         +              Normal
  04/11/2026 11 PM PDT            2.73            477         +              Normal
  04/12/2026 12 AM PDT            2.72            473         -              Normal
  04/12/2026 01 AM PDT            2.72            473         0              Normal
  04/12/2026 02 AM PDT            2.71            469         -              Normal
  04/12/2026 03 AM PDT            2.70            465         -              Normal
  04/12/2026 04 AM PDT            2.69            461         -              Normal
  04/12/2026 05 AM PDT            2.68            457         -              Normal
  04/12/2026 06 AM PDT            2.66            449         -              Normal
  04/12/2026 07 AM PDT            2.63            438         -              Normal
  04/12/2026 08 AM PDT            2.61            430         -              Normal
  04/12/2026 09 AM PDT            2.59            422         -              Normal
  04/12/2026 10 AM PDT            2.56            411         -              Normal
  04/12/2026 11 AM PDT            2.54            404         -              Normal
  04/12/2026 12 PM PDT            2.52            397         -              Normal
  04/12/2026 01 PM PDT            2.50            390         -              Normal
  04/12/2026 02 PM PDT            2.48            383         -              Normal
  04/12/2026 03 PM PDT            2.46            376         -              Normal
  04/12/2026 04 PM PDT            2.45            372         -              Normal
  04/12/2026 05 PM PDT            2.43            366         -              Normal
  04/12/2026 06 PM PDT            2.43            366         0              Normal
  04/12/2026 07 PM PDT            2.42            362         -              Normal
  04/12/2026 08 PM PDT            2.42            362         0              Normal
  04/12/2026 09 PM PDT            2.41            359         -              Normal
  04/12/2026 10 PM PDT            2.41            359         0              Normal
  04/12/2026 11 PM PDT            2.40            356         -              Normal
  04/13/2026 12 AM PDT            2.40            356         0              Normal
  04/13/2026 01 AM PDT            2.39            352         -              Normal
  04/13/2026 02 AM PDT            2.38            349         -              Normal
  04/13/2026 03 AM PDT            2.37            346         -              Normal
  04/13/2026 04 AM PDT            2.37            346         0              Normal
  04/13/2026 05 AM PDT            2.36            342         -              Normal
  04/13/2026 06 AM PDT            2.35            339         -              Normal
  04/13/2026 07 AM PDT            2.34            336         -              Normal
  04/13/2026 08 AM PDT            2.33            333         -              Normal
  04/13/2026 09 AM PDT            2.33            333         0              Normal
  04/13/2026 10 AM PDT            2.32            330         -              Normal
  04/13/2026 11 AM PDT            2.31            326         -              Normal
  04/13/2026 12 PM PDT            2.30            323         -              Normal
  04/13/2026 01 PM PDT            2.29            320         -              Normal
  04/13/2026 02 PM PDT            2.29            320         0              Normal
  04/13/2026 03 PM PDT            2.28            317         -              Normal
  04/13/2026 04 PM PDT            2.28            317         0              Normal
  04/13/2026 05 PM PDT            2.27            314         -              Normal
  04/13/2026 06 PM PDT            2.28            317         +              Normal
  04/13/2026 07 PM PDT            2.28            317         0              Normal
  04/13/2026 08 PM PDT            2.28            317         0              Normal
  04/13/2026 09 PM PDT            2.29            320         +              Normal
  04/13/2026 10 PM PDT            2.29            320         0              Normal
  04/13/2026 11 PM PDT            2.29            320         0              Normal
  04/14/2026 12 AM PDT            2.29            320         0              Normal
  04/14/2026 01 AM PDT            2.29            320         0              Normal
  04/14/2026 02 AM PDT            2.29            320         0              Normal
  04/14/2026 03 AM PDT            2.29            320         0              Normal
  04/14/2026 04 AM PDT            2.28            317         -              Normal
  04/14/2026 05 AM PDT            2.28            317         0              Normal
  04/14/2026 06 AM PDT            2.28            317         0              Normal
  04/14/2026 07 AM PDT            2.27            314         -              Normal
  04/14/2026 08 AM PDT            2.26            311         -              Normal
  04/14/2026 09 AM PDT            2.26            311         0              Normal
  04/14/2026 10 AM PDT            2.25            308         -              Normal
  04/14/2026 11 AM PDT            2.24            305         -              Normal
  04/14/2026 12 PM PDT            2.23            302         -              Normal
  04/14/2026 01 PM PDT            2.23            302         0              Normal
  04/14/2026 02 PM PDT            2.23            302         0              Normal
  04/14/2026 03 PM PDT            2.23            302         0              Normal
  04/14/2026 04 PM PDT            2.23            302         0              Normal
  04/14/2026 05 PM PDT            2.23            302         0              Normal
  04/14/2026 06 PM PDT            2.24            305         +              Normal
  04/14/2026 07 PM PDT            2.25            308         +              Normal
  04/14/2026 08 PM PDT            2.27            314         +              Normal
  04/14/2026 09 PM PDT            2.29            320         +              Normal
  04/14/2026 10 PM PDT            2.30            323         +              Normal
  04/14/2026 11 PM PDT            2.31            326         +              Normal
  04/15/2026 12 AM PDT            2.32            330         +              Normal
  04/15/2026 01 AM PDT            2.32            330         0              Normal
  04/15/2026 02 AM PDT            2.33            333         +              Normal
  04/15/2026 03 AM PDT            2.33            333         0              Normal
  04/15/2026 04 AM PDT            2.33            333         0              Normal
  04/15/2026 05 AM PDT            2.33            333         0              Normal
  04/15/2026 06 AM PDT            2.32            330         -              Normal
  04/15/2026 07 AM PDT            2.31            326         -              Normal
  04/15/2026 08 AM PDT            2.29            320         -              Normal
  04/15/2026 09 AM PDT            2.28            317         -              Normal
  04/15/2026 10 AM PDT            2.27            314         -              Normal
  04/15/2026 11 AM PDT            2.26            311         -              Normal
  04/15/2026 12 PM PDT            2.25            308         -              Normal
  04/15/2026 01 PM PDT            2.24            305         -              Normal
  04/15/2026 02 PM PDT            2.24            305         0              Normal
  04/15/2026 03 PM PDT            2.23            302         -              Normal
  04/15/2026 04 PM PDT            2.23            302         0              Normal
  04/15/2026 05 PM PDT            2.24            305         +              Normal
  04/15/2026 06 PM PDT            2.27            314         +              Normal
  04/15/2026 07 PM PDT            2.30            323         +              Normal
  04/15/2026 08 PM PDT            2.34            336         +              Normal
  04/15/2026 09 PM PDT            2.37            346         +              Normal
  04/15/2026 10 PM PDT            2.40            356         +              Normal
  04/15/2026 11 PM PDT            2.42            362         +              Normal
  04/16/2026 12 AM PDT            2.42            362         0              Normal
  04/16/2026 01 AM PDT            2.42            362         0              Normal
  04/16/2026 02 AM PDT            2.42            362         0              Normal
  04/16/2026 03 AM PDT            2.42            362         0              Normal
  04/16/2026 04 AM PDT            2.41            359         -              Normal
  04/16/2026 05 AM PDT            2.40            356         -              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.