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WEST WALKER RIVER - BELOW LITTLE WALKER RIVER NEAR COLEVILLE (WWBC1)
| Latitude: 38.38º N | Longitude: 119.45º W | Elevation: 6591 Feet | | Forecast Type: Official Location |
| Location: Mono County in California | Bulletin Group: Eastern Sierra | River Group: Eastern Sierra |
| Issuance Time: | Aug 18 2026 at 7:19 AM PDT | Next Issuance: | Aug 19 2026 at 9:00 AM PDT
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| Action/Monitor: 5.5 Feet | Minor Flood: 6.0 Feet | Moderate Flood: 6.8 Feet | Major Flood: 7.3 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: West Walker River - Blo Ltl Walker Nr Coleville (WWBC1)
#
# File Generation Time: 08/18/2026 at 07:19 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 08/13/2026 at 07:00 AM PDT
# Maximum Observed Stage: 1.13 Feet
# Maximum Observed Flow: 61 cfs
#
# Earliest Date & Time of Maximum Forecast: 08/18/2026 at 08:00 AM PDT
# Maximum Forecast Stage: 0.97 Feet
# Maximum Forecast Flow: 45 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
08/13/2026 07 AM PDT 1.13 61 Normal
08/13/2026 08 AM PDT 1.12 60 - Normal
08/13/2026 09 AM PDT 1.10 58 - Normal
08/13/2026 10 AM PDT 1.10 58 0 Normal
08/13/2026 11 AM PDT 1.10 58 0 Normal
08/13/2026 12 PM PDT 1.08 56 - Normal
08/13/2026 01 PM PDT 1.09 57 + Normal
08/13/2026 02 PM PDT 1.09 57 0 Normal
08/13/2026 03 PM PDT 1.08 56 - Normal
08/13/2026 04 PM PDT 1.08 56 0 Normal
08/13/2026 05 PM PDT 1.07 55 - Normal
08/13/2026 06 PM PDT 1.06 54 - Normal
08/13/2026 07 PM PDT 1.06 54 0 Normal
08/13/2026 08 PM PDT 1.06 54 0 Normal
08/13/2026 09 PM PDT 1.06 54 0 Normal
08/13/2026 10 PM PDT 1.04 52 - Normal
08/13/2026 11 PM PDT 1.06 54 + Normal
08/14/2026 12 AM PDT 1.06 54 0 Normal
08/14/2026 01 AM PDT 1.05 53 - Normal
08/14/2026 02 AM PDT 1.05 53 0 Normal
08/14/2026 03 AM PDT 1.06 54 + Normal
08/14/2026 04 AM PDT 1.06 54 0 Normal
08/14/2026 05 AM PDT 1.05 53 - Normal
08/14/2026 06 AM PDT 1.07 55 + Normal
08/14/2026 07 AM PDT 1.07 55 0 Normal
08/14/2026 08 AM PDT 1.07 55 0 Normal
08/14/2026 09 AM PDT 1.06 54 - Normal
08/14/2026 10 AM PDT 1.07 55 + Normal
08/14/2026 11 AM PDT 1.07 55 0 Normal
08/14/2026 12 PM PDT 1.07 55 0 Normal
08/14/2026 01 PM PDT 1.07 55 0 Normal
08/14/2026 02 PM PDT 1.06 54 - Normal
08/14/2026 03 PM PDT 1.06 54 0 Normal
08/14/2026 04 PM PDT 1.05 53 - Normal
08/14/2026 05 PM PDT 1.05 53 0 Normal
08/14/2026 06 PM PDT 1.04 52 - Normal
08/14/2026 07 PM PDT 1.04 52 0 Normal
08/14/2026 08 PM PDT 1.03 51 - Normal
08/14/2026 09 PM PDT 1.02 50 - Normal
08/14/2026 10 PM PDT 1.01 49 - Normal
08/14/2026 11 PM PDT 1.02 50 + Normal
08/15/2026 12 AM PDT 1.02 50 0 Normal
08/15/2026 01 AM PDT 1.02 50 0 Normal
08/15/2026 02 AM PDT 1.02 50 0 Normal
08/15/2026 03 AM PDT 1.03 51 + Normal
08/15/2026 04 AM PDT 1.02 50 - Normal
08/15/2026 05 AM PDT 1.02 50 0 Normal
08/15/2026 06 AM PDT 1.03 51 + Normal
08/15/2026 07 AM PDT 1.04 52 + Normal
08/15/2026 08 AM PDT 1.04 52 0 Normal
08/15/2026 09 AM PDT 1.04 52 0 Normal
08/15/2026 10 AM PDT 1.04 52 0 Normal
08/15/2026 11 AM PDT 1.04 52 0 Normal
08/15/2026 12 PM PDT 1.04 52 0 Normal
08/15/2026 01 PM PDT 1.04 52 0 Normal
08/15/2026 02 PM PDT 1.04 52 0 Normal
08/15/2026 03 PM PDT 1.03 51 - Normal
08/15/2026 04 PM PDT 1.03 51 0 Normal
08/15/2026 05 PM PDT 1.02 50 - Normal
08/15/2026 06 PM PDT 1.01 49 - Normal
08/15/2026 07 PM PDT 1.00 48 - Normal
08/15/2026 08 PM PDT 0.99 47 - Normal
08/15/2026 09 PM PDT 1.00 48 + Normal
08/15/2026 10 PM PDT 0.99 47 - Normal
08/15/2026 11 PM PDT 0.99 47 0 Normal
08/16/2026 12 AM PDT 0.99 47 0 Normal
08/16/2026 01 AM PDT 0.99 47 0 Normal
08/16/2026 02 AM PDT 0.99 47 0 Normal
08/16/2026 03 AM PDT 1.00 48 + Normal
08/16/2026 04 AM PDT 1.00 48 0 Normal
08/16/2026 05 AM PDT 1.00 48 0 Normal
08/16/2026 06 AM PDT 1.00 48 0 Normal
08/16/2026 07 AM PDT 1.01 49 + Normal
08/16/2026 08 AM PDT 1.01 49 0 Normal
08/16/2026 09 AM PDT 1.01 49 0 Normal
08/16/2026 10 AM PDT 1.01 49 0 Normal
08/16/2026 11 AM PDT 1.00 48 - Normal
08/16/2026 12 PM PDT 1.02 50 + Normal
08/16/2026 01 PM PDT 1.00 48 - Normal
08/16/2026 02 PM PDT 1.01 49 + Normal
08/16/2026 03 PM PDT 1.00 48 - Normal
08/16/2026 04 PM PDT 1.00 48 0 Normal
08/16/2026 05 PM PDT 0.99 47 - Normal
08/16/2026 06 PM PDT 0.98 46 - Normal
08/16/2026 07 PM PDT 0.98 46 0 Normal
08/16/2026 08 PM PDT 0.98 46 0 Normal
08/16/2026 09 PM PDT 0.98 46 0 Normal
08/16/2026 10 PM PDT 0.97 45 - Normal
08/16/2026 11 PM PDT 0.97 45 0 Normal
08/17/2026 12 AM PDT 0.97 45 0 Normal
08/17/2026 01 AM PDT 0.97 45 0 Normal
08/17/2026 02 AM PDT 0.98 46 + Normal
08/17/2026 03 AM PDT 0.98 46 0 Normal
08/17/2026 04 AM PDT 0.98 46 0 Normal
08/17/2026 05 AM PDT 0.98 46 0 Normal
08/17/2026 06 AM PDT 0.98 46 0 Normal
08/17/2026 07 AM PDT 0.99 47 + Normal
08/17/2026 08 AM PDT 0.99 47 0 Normal
08/17/2026 09 AM PDT 0.99 47 0 Normal
08/17/2026 10 AM PDT 0.99 47 0 Normal
08/17/2026 11 AM PDT 0.99 47 0 Normal
08/17/2026 12 PM PDT 1.00 48 + Normal
08/17/2026 01 PM PDT 1.00 48 0 Normal
08/17/2026 02 PM PDT 1.00 48 0 Normal
08/17/2026 03 PM PDT 1.00 48 0 Normal
08/17/2026 04 PM PDT 0.99 47 - Normal
08/17/2026 05 PM PDT 0.98 46 - Normal
08/17/2026 06 PM PDT 0.98 46 0 Normal
08/17/2026 07 PM PDT 0.97 45 - Normal
08/17/2026 08 PM PDT 0.97 45 0 Normal
08/17/2026 09 PM PDT 0.97 45 0 Normal
08/17/2026 10 PM PDT 0.97 45 0 Normal
08/17/2026 11 PM PDT 0.97 45 0 Normal
08/18/2026 12 AM PDT 0.96 45 - Normal
08/18/2026 01 AM PDT 0.96 45 0 Normal
08/18/2026 02 AM PDT 0.96 45 0 Normal
08/18/2026 03 AM PDT 0.97 45 + Normal
08/18/2026 04 AM PDT 0.97 45 0 Normal
08/18/2026 05 AM PDT 0.97 45 0 Normal
08/18/2026 06 AM PDT 0.97 45 0 Normal
08/18/2026 07 AM PDT 0.97 45 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
08/18/2026 08 AM PDT 0.97 45 Normal
08/18/2026 09 AM PDT 0.97 45 0 Normal
08/18/2026 10 AM PDT 0.97 45 0 Normal
08/18/2026 11 AM PDT 0.97 45 0 Normal
08/18/2026 12 PM PDT 0.96 45 - Normal
08/18/2026 01 PM PDT 0.96 45 0 Normal
08/18/2026 02 PM PDT 0.96 45 0 Normal
08/18/2026 03 PM PDT 0.96 45 0 Normal
08/18/2026 04 PM PDT 0.96 45 0 Normal
08/18/2026 05 PM PDT 0.96 45 0 Normal
08/18/2026 06 PM PDT 0.96 45 0 Normal
08/18/2026 07 PM PDT 0.96 45 0 Normal
08/18/2026 08 PM PDT 0.96 45 0 Normal
08/18/2026 09 PM PDT 0.96 45 0 Normal
08/18/2026 10 PM PDT 0.96 45 0 Normal
08/18/2026 11 PM PDT 0.96 45 0 Normal
08/19/2026 12 AM PDT 0.96 45 0 Normal
08/19/2026 01 AM PDT 0.96 45 0 Normal
08/19/2026 02 AM PDT 0.95 44 - Normal
08/19/2026 03 AM PDT 0.95 44 0 Normal
08/19/2026 04 AM PDT 0.95 44 0 Normal
08/19/2026 05 AM PDT 0.95 44 0 Normal
08/19/2026 06 AM PDT 0.95 44 0 Normal
08/19/2026 07 AM PDT 0.95 44 0 Normal
08/19/2026 08 AM PDT 0.95 44 0 Normal
08/19/2026 09 AM PDT 0.95 44 0 Normal
08/19/2026 10 AM PDT 0.95 44 0 Normal
08/19/2026 11 AM PDT 0.95 44 0 Normal
08/19/2026 12 PM PDT 0.95 44 0 Normal
08/19/2026 01 PM PDT 0.95 44 0 Normal
08/19/2026 02 PM PDT 0.95 44 0 Normal
08/19/2026 03 PM PDT 0.95 44 0 Normal
08/19/2026 04 PM PDT 0.95 44 0 Normal
08/19/2026 05 PM PDT 0.94 43 - Normal
08/19/2026 06 PM PDT 0.94 43 0 Normal
08/19/2026 07 PM PDT 0.94 43 0 Normal
08/19/2026 08 PM PDT 0.94 43 0 Normal
08/19/2026 09 PM PDT 0.94 43 0 Normal
08/19/2026 10 PM PDT 0.94 43 0 Normal
08/19/2026 11 PM PDT 0.94 43 0 Normal
08/20/2026 12 AM PDT 0.94 43 0 Normal
08/20/2026 01 AM PDT 0.94 43 0 Normal
08/20/2026 02 AM PDT 0.94 43 0 Normal
08/20/2026 03 AM PDT 0.94 43 0 Normal
08/20/2026 04 AM PDT 0.94 43 0 Normal
08/20/2026 05 AM PDT 0.94 43 0 Normal
08/20/2026 06 AM PDT 0.94 43 0 Normal
08/20/2026 07 AM PDT 0.94 43 0 Normal
08/20/2026 08 AM PDT 0.94 43 0 Normal
08/20/2026 09 AM PDT 0.94 43 0 Normal
08/20/2026 10 AM PDT 0.93 42 - Normal
08/20/2026 11 AM PDT 0.93 42 0 Normal
08/20/2026 12 PM PDT 0.93 42 0 Normal
08/20/2026 01 PM PDT 0.93 42 0 Normal
08/20/2026 02 PM PDT 0.93 42 0 Normal
08/20/2026 03 PM PDT 0.93 42 0 Normal
08/20/2026 04 PM PDT 0.93 42 0 Normal
08/20/2026 05 PM PDT 0.93 42 0 Normal
08/20/2026 06 PM PDT 0.93 42 0 Normal
08/20/2026 07 PM PDT 0.93 42 0 Normal
08/20/2026 08 PM PDT 0.93 42 0 Normal
08/20/2026 09 PM PDT 0.93 42 0 Normal
08/20/2026 10 PM PDT 0.93 42 0 Normal
08/20/2026 11 PM PDT 0.93 42 0 Normal
08/21/2026 12 AM PDT 0.93 42 0 Normal
08/21/2026 01 AM PDT 0.92 41 - Normal
08/21/2026 02 AM PDT 0.92 41 0 Normal
08/21/2026 03 AM PDT 0.92 41 0 Normal
08/21/2026 04 AM PDT 0.92 41 0 Normal
08/21/2026 05 AM PDT 0.92 41 0 Normal
08/21/2026 06 AM PDT 0.92 41 0 Normal
08/21/2026 07 AM PDT 0.92 41 0 Normal
08/21/2026 08 AM PDT 0.92 41 0 Normal
08/21/2026 09 AM PDT 0.92 41 0 Normal
08/21/2026 10 AM PDT 0.92 41 0 Normal
08/21/2026 11 AM PDT 0.92 41 0 Normal
08/21/2026 12 PM PDT 0.92 41 0 Normal
08/21/2026 01 PM PDT 0.92 41 0 Normal
08/21/2026 02 PM PDT 0.92 41 0 Normal
08/21/2026 03 PM PDT 0.92 41 0 Normal
08/21/2026 04 PM PDT 0.92 41 0 Normal
08/21/2026 05 PM PDT 0.92 41 0 Normal
08/21/2026 06 PM PDT 0.91 40 - Normal
08/21/2026 07 PM PDT 0.91 40 0 Normal
08/21/2026 08 PM PDT 0.91 40 0 Normal
08/21/2026 09 PM PDT 0.91 40 0 Normal
08/21/2026 10 PM PDT 0.91 40 0 Normal
08/21/2026 11 PM PDT 0.91 40 0 Normal
08/22/2026 12 AM PDT 0.91 40 0 Normal
08/22/2026 01 AM PDT 0.91 40 0 Normal
08/22/2026 02 AM PDT 0.91 40 0 Normal
08/22/2026 03 AM PDT 0.91 40 0 Normal
08/22/2026 04 AM PDT 0.91 40 0 Normal
08/22/2026 05 AM PDT 0.91 40 0 Normal
08/22/2026 06 AM PDT 0.91 40 0 Normal
08/22/2026 07 AM PDT 0.91 40 0 Normal
08/22/2026 08 AM PDT 0.91 40 0 Normal
08/22/2026 09 AM PDT 0.91 40 0 Normal
08/22/2026 10 AM PDT 0.90 40 - Normal
08/22/2026 11 AM PDT 0.90 40 0 Normal
08/22/2026 12 PM PDT 0.90 40 0 Normal
08/22/2026 01 PM PDT 0.90 40 0 Normal
08/22/2026 02 PM PDT 0.90 40 0 Normal
08/22/2026 03 PM PDT 0.90 40 0 Normal
08/22/2026 04 PM PDT 0.90 40 0 Normal
08/22/2026 05 PM PDT 0.90 40 0 Normal
08/22/2026 06 PM PDT 0.90 40 0 Normal
08/22/2026 07 PM PDT 0.90 40 0 Normal
08/22/2026 08 PM PDT 0.90 40 0 Normal
08/22/2026 09 PM PDT 0.90 40 0 Normal
08/22/2026 10 PM PDT 0.90 40 0 Normal
08/22/2026 11 PM PDT 0.90 40 0 Normal
08/23/2026 12 AM PDT 0.90 40 0 Normal
08/23/2026 01 AM PDT 0.90 40 0 Normal
08/23/2026 02 AM PDT 0.90 40 0 Normal
08/23/2026 03 AM PDT 0.89 39 - Normal
08/23/2026 04 AM PDT 0.89 39 0 Normal
08/23/2026 05 AM PDT 0.89 39 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.
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