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 20 2026 at 1:26 PM PDTNext Issuance: Mar 21 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:  03/20/2026 at 01:26 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  03/20/2026 at 03:00 AM PDT
# Maximum Observed Stage:                       3.11 Feet
# Maximum Observed Flow:                        593 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/25/2026 at 02:00 AM PDT
# Maximum Forecast Stage:                       3.38 Feet
# Maximum Forecast Flow:                        714 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  03/15/2026 01 PM PDT            2.34            308                        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            2.42            333         0              Normal
  03/16/2026 01 PM PDT            2.40            326         -              Normal
  03/16/2026 02 PM PDT            2.40            326         0              Normal
  03/16/2026 03 PM PDT            2.39            323         -              Normal
  03/16/2026 04 PM PDT            2.38            320         -              Normal
  03/16/2026 05 PM PDT            2.39            323         +              Normal
  03/16/2026 06 PM PDT            2.40            326         +              Normal
  03/16/2026 07 PM PDT            2.44            339         +              Normal
  03/16/2026 08 PM PDT            2.50            359         +              Normal
  03/16/2026 09 PM PDT            2.55            376         +              Normal
  03/16/2026 10 PM PDT            2.59            390         +              Normal
  03/16/2026 11 PM PDT            2.63            404         +              Normal
  03/17/2026 12 AM PDT            2.65            411         +              Normal
  03/17/2026 01 AM PDT            2.66            415         +              Normal
  03/17/2026 02 AM PDT            2.67            419         +              Normal
  03/17/2026 03 AM PDT            2.66            415         -              Normal
  03/17/2026 04 AM PDT            2.67            419         +              Normal
  03/17/2026 05 AM PDT            2.67            419         0              Normal
  03/17/2026 06 AM PDT            2.67            419         0              Normal
  03/17/2026 07 AM PDT            2.66            415         -              Normal
  03/17/2026 08 AM PDT            2.65            411         -              Normal
  03/17/2026 09 AM PDT            2.64            408         -              Normal
  03/17/2026 10 AM PDT            2.62            401         -              Normal
  03/17/2026 11 AM PDT            2.62            401         0              Normal
  03/17/2026 12 PM PDT            2.61            397         -              Normal
  03/17/2026 01 PM PDT            2.59            390         -              Normal
  03/17/2026 02 PM PDT            2.59            390         0              Normal
  03/17/2026 03 PM PDT            2.56            379         -              Normal
  03/17/2026 04 PM PDT            2.56            379         0              Normal
  03/17/2026 05 PM PDT            2.58            386         +              Normal
  03/17/2026 06 PM PDT            2.62            401         +              Normal
  03/17/2026 07 PM PDT            2.68            422         +              Normal
  03/17/2026 08 PM PDT            2.76            453         +              Normal
  03/17/2026 09 PM PDT            2.83            481         +              Normal
  03/17/2026 10 PM PDT            2.88            501         +              Normal
  03/17/2026 11 PM PDT            2.94            524         +              Normal
  03/18/2026 12 AM PDT            2.97            536         +              Normal
  03/18/2026 01 AM PDT            2.98            540         +              Normal
  03/18/2026 02 AM PDT            2.98            540         0              Normal
  03/18/2026 03 AM PDT            2.99            544         +              Normal
  03/18/2026 04 AM PDT            2.99            544         0              Normal
  03/18/2026 05 AM PDT            2.98            540         -              Normal
  03/18/2026 06 AM PDT            2.98            540         0              Normal
  03/18/2026 07 AM PDT            2.95            528         -              Normal
  03/18/2026 08 AM PDT            2.93            520         -              Normal
  03/18/2026 09 AM PDT            2.91            512         -              Normal
  03/18/2026 10 AM PDT            2.90            508         -              Normal
  03/18/2026 11 AM PDT            2.87            497         -              Normal
  03/18/2026 12 PM PDT            2.84            485         -              Normal
  03/18/2026 01 PM PDT            2.84            485         0              Normal
  03/18/2026 02 PM PDT            2.81            473         -              Normal
  03/18/2026 03 PM PDT            2.79            465         -              Normal
  03/18/2026 04 PM PDT            2.78            461         -              Normal
  03/18/2026 05 PM PDT            2.78            461         0              Normal
  03/18/2026 06 PM PDT            2.81            473         +              Normal
  03/18/2026 07 PM PDT            2.86            493         +              Normal
  03/18/2026 08 PM PDT            2.92            516         +              Normal
  03/18/2026 09 PM PDT            2.97            536         +              Normal
  03/18/2026 10 PM PDT            3.01            552         +              Normal
  03/18/2026 11 PM PDT            3.04            564         +              Normal
  03/19/2026 12 AM PDT            3.05            568         +              Normal
  03/19/2026 01 AM PDT            3.05            568         0              Normal
  03/19/2026 02 AM PDT            3.06            572         +              Normal
  03/19/2026 03 AM PDT            3.05            568         -              Normal
  03/19/2026 04 AM PDT            3.04            564         -              Normal
  03/19/2026 05 AM PDT            3.02            556         -              Normal
  03/19/2026 06 AM PDT            3.00            548         -              Normal
  03/19/2026 07 AM PDT            2.99            544         -              Normal
  03/19/2026 08 AM PDT            2.96            532         -              Normal
  03/19/2026 09 AM PDT            2.95            528         -              Normal
  03/19/2026 10 AM PDT            2.92            516         -              Normal
  03/19/2026 11 AM PDT            2.91            512         -              Normal
  03/19/2026 12 PM PDT            2.88            501         -              Normal
  03/19/2026 01 PM PDT            2.87            497         -              Normal
  03/19/2026 02 PM PDT            2.83            481         -              Normal
  03/19/2026 03 PM PDT            2.82            477         -              Normal
  03/19/2026 04 PM PDT            2.81            473         -              Normal
  03/19/2026 05 PM PDT            2.82            477         +              Normal
  03/19/2026 06 PM PDT            2.85            489         +              Normal
  03/19/2026 07 PM PDT            2.89            505         +              Normal
  03/19/2026 08 PM PDT            2.96            532         +              Normal
  03/19/2026 09 PM PDT            3.02            556         +              Normal
  03/19/2026 10 PM PDT            3.06            572         +              Normal
  03/19/2026 11 PM PDT            3.08            580         +              Normal
  03/20/2026 12 AM PDT            3.10            589         +              Normal
  03/20/2026 01 AM PDT            3.10            589         0              Normal
  03/20/2026 02 AM PDT            3.11            593         +              Normal
  03/20/2026 03 AM PDT            3.11            593         0              Normal
  03/20/2026 04 AM PDT            3.10            589         -              Normal
  03/20/2026 05 AM PDT            3.08            580         -              Normal
  03/20/2026 06 AM PDT            3.07            576         -              Normal
  03/20/2026 07 AM PDT            3.05            568         -              Normal
  03/20/2026 08 AM PDT            3.03            560         -              Normal
  03/20/2026 09 AM PDT            3.01            552         -              Normal
  03/20/2026 10 AM PDT            2.99            544         -              Normal
  03/20/2026 11 AM PDT            2.97            536         -              Normal
  03/20/2026 12 PM PDT            2.94            524         -              Normal
  03/20/2026 01 PM PDT            2.92            516         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/20/2026 02 PM PDT            2.92            516                        Normal
  03/20/2026 03 PM PDT            2.90            508         -              Normal
  03/20/2026 04 PM PDT            2.92            516         +              Normal
  03/20/2026 05 PM PDT            2.95            528         +              Normal
  03/20/2026 06 PM PDT            2.99            544         +              Normal
  03/20/2026 07 PM PDT            3.03            560         +              Normal
  03/20/2026 08 PM PDT            3.06            572         +              Normal
  03/20/2026 09 PM PDT            3.09            585         +              Normal
  03/20/2026 10 PM PDT            3.12            597         +              Normal
  03/20/2026 11 PM PDT            3.14            606         +              Normal
  03/21/2026 12 AM PDT            3.17            619         +              Normal
  03/21/2026 01 AM PDT            3.19            627         +              Normal
  03/21/2026 02 AM PDT            3.20            632         +              Normal
  03/21/2026 03 AM PDT            3.20            632         0              Normal
  03/21/2026 04 AM PDT            3.21            636         +              Normal
  03/21/2026 05 AM PDT            3.21            636         0              Normal
  03/21/2026 06 AM PDT            3.20            632         -              Normal
  03/21/2026 07 AM PDT            3.18            623         -              Normal
  03/21/2026 08 AM PDT            3.16            614         -              Normal
  03/21/2026 09 AM PDT            3.15            610         -              Normal
  03/21/2026 10 AM PDT            3.12            597         -              Normal
  03/21/2026 11 AM PDT            3.11            593         -              Normal
  03/21/2026 12 PM PDT            3.07            576         -              Normal
  03/21/2026 01 PM PDT            3.05            568         -              Normal
  03/21/2026 02 PM PDT            3.03            560         -              Normal
  03/21/2026 03 PM PDT            3.01            552         -              Normal
  03/21/2026 04 PM PDT            3.01            552         0              Normal
  03/21/2026 05 PM PDT            3.02            556         +              Normal
  03/21/2026 06 PM PDT            3.06            572         +              Normal
  03/21/2026 07 PM PDT            3.09            585         +              Normal
  03/21/2026 08 PM PDT            3.14            606         +              Normal
  03/21/2026 09 PM PDT            3.17            619         +              Normal
  03/21/2026 10 PM PDT            3.21            636         +              Normal
  03/21/2026 11 PM PDT            3.22            641         +              Normal
  03/22/2026 12 AM PDT            3.23            645         +              Normal
  03/22/2026 01 AM PDT            3.24            649         +              Normal
  03/22/2026 02 AM PDT            3.25            654         +              Normal
  03/22/2026 03 AM PDT            3.24            649         -              Normal
  03/22/2026 04 AM PDT            3.24            649         0              Normal
  03/22/2026 05 AM PDT            3.23            645         -              Normal
  03/22/2026 06 AM PDT            3.22            641         -              Normal
  03/22/2026 07 AM PDT            3.19            627         -              Normal
  03/22/2026 08 AM PDT            3.17            619         -              Normal
  03/22/2026 09 AM PDT            3.15            610         -              Normal
  03/22/2026 10 AM PDT            3.12            597         -              Normal
  03/22/2026 11 AM PDT            3.10            589         -              Normal
  03/22/2026 12 PM PDT            3.06            572         -              Normal
  03/22/2026 01 PM PDT            3.04            564         -              Normal
  03/22/2026 02 PM PDT            3.02            556         -              Normal
  03/22/2026 03 PM PDT            2.99            544         -              Normal
  03/22/2026 04 PM PDT            2.99            544         0              Normal
  03/22/2026 05 PM PDT            3.00            548         +              Normal
  03/22/2026 06 PM PDT            3.03            560         +              Normal
  03/22/2026 07 PM PDT            3.06            572         +              Normal
  03/22/2026 08 PM PDT            3.11            593         +              Normal
  03/22/2026 09 PM PDT            3.14            606         +              Normal
  03/22/2026 10 PM PDT            3.17            619         +              Normal
  03/22/2026 11 PM PDT            3.19            627         +              Normal
  03/23/2026 12 AM PDT            3.20            632         +              Normal
  03/23/2026 01 AM PDT            3.22            641         +              Normal
  03/23/2026 02 AM PDT            3.22            641         0              Normal
  03/23/2026 03 AM PDT            3.22            641         0              Normal
  03/23/2026 04 AM PDT            3.22            641         0              Normal
  03/23/2026 05 AM PDT            3.22            641         0              Normal
  03/23/2026 06 AM PDT            3.21            636         -              Normal
  03/23/2026 07 AM PDT            3.19            627         -              Normal
  03/23/2026 08 AM PDT            3.17            619         -              Normal
  03/23/2026 09 AM PDT            3.15            610         -              Normal
  03/23/2026 10 AM PDT            3.12            597         -              Normal
  03/23/2026 11 AM PDT            3.11            593         -              Normal
  03/23/2026 12 PM PDT            3.07            576         -              Normal
  03/23/2026 01 PM PDT            3.05            568         -              Normal
  03/23/2026 02 PM PDT            3.03            560         -              Normal
  03/23/2026 03 PM PDT            3.01            552         -              Normal
  03/23/2026 04 PM PDT            3.01            552         0              Normal
  03/23/2026 05 PM PDT            3.02            556         +              Normal
  03/23/2026 06 PM PDT            3.06            572         +              Normal
  03/23/2026 07 PM PDT            3.09            585         +              Normal
  03/23/2026 08 PM PDT            3.14            606         +              Normal
  03/23/2026 09 PM PDT            3.17            619         +              Normal
  03/23/2026 10 PM PDT            3.21            636         +              Normal
  03/23/2026 11 PM PDT            3.23            645         +              Normal
  03/24/2026 12 AM PDT            3.25            654         +              Normal
  03/24/2026 01 AM PDT            3.26            658         +              Normal
  03/24/2026 02 AM PDT            3.27            663         +              Normal
  03/24/2026 03 AM PDT            3.27            663         0              Normal
  03/24/2026 04 AM PDT            3.27            663         0              Normal
  03/24/2026 05 AM PDT            3.27            663         0              Normal
  03/24/2026 06 AM PDT            3.26            658         -              Normal
  03/24/2026 07 AM PDT            3.24            649         -              Normal
  03/24/2026 08 AM PDT            3.22            641         -              Normal
  03/24/2026 09 AM PDT            3.21            636         -              Normal
  03/24/2026 10 AM PDT            3.18            623         -              Normal
  03/24/2026 11 AM PDT            3.17            619         -              Normal
  03/24/2026 12 PM PDT            3.13            601         -              Normal
  03/24/2026 01 PM PDT            3.11            593         -              Normal
  03/24/2026 02 PM PDT            3.10            589         -              Normal
  03/24/2026 03 PM PDT            3.08            580         -              Normal
  03/24/2026 04 PM PDT            3.08            580         0              Normal
  03/24/2026 05 PM PDT            3.09            585         +              Normal
  03/24/2026 06 PM PDT            3.13            601         +              Normal
  03/24/2026 07 PM PDT            3.17            619         +              Normal
  03/24/2026 08 PM PDT            3.22            641         +              Normal
  03/24/2026 09 PM PDT            3.26            658         +              Normal
  03/24/2026 10 PM PDT            3.31            681         +              Normal
  03/24/2026 11 PM PDT            3.33            690         +              Normal
  03/25/2026 12 AM PDT            3.35            700         +              Normal
  03/25/2026 01 AM PDT            3.37            709         +              Normal
  03/25/2026 02 AM PDT            3.38            714         +              Normal
  03/25/2026 03 AM PDT            3.38            714         0              Normal
  03/25/2026 04 AM PDT            3.38            714         0              Normal
  03/25/2026 05 AM PDT            3.38            714         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.