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 (MASN2)
Latitude: 38.92º NLongitude: 119.19º WElevation: 4420 Feet
Location: Lyon County in NevadaRiver Group: Eastern Sierra
Issuance Time: Aug 18 2018 at 8:08 AM PDTNext Issuance: Aug 19 2018 at 9:00 AM PDT
Monitor Stage: 9.3 FeetFlood Stage: 9.8 Feet

SPECIAL NOTE:Provisional rating under development due to recent sediment removal. Increased uncertainty exists for both observed and forecast flows.

# Tabular River Observed & Forecast - Hydrograph Information
#
# File Generation Time:  08/18/2018  08:08 AM PDT
# Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  08/13/2018 11 AM PDT
# Maximum Observed Stage:                       4.8 Feet
# Maximum Observed Flow:                        166 cfs
#
# Earliest Date & Time of Maximum Forecast:     08/23/2018 01 AM PDT
# Maximum Forecast Stage:                       4.5 Feet
# Maximum Forecast Flow:                        122 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  08/13/2018 08 AM PDT             4.7            148                        Normal
  08/13/2018 09 AM PDT             4.7            154         +              Normal
  08/13/2018 10 AM PDT             4.8            162         +              Normal
  08/13/2018 11 AM PDT             4.8            166         +              Normal
  08/13/2018 12 PM PDT             4.8            164         -              Normal
  08/13/2018 01 PM PDT             4.8            164         0              Normal
  08/13/2018 02 PM PDT             4.8            162         -              Normal
  08/13/2018 03 PM PDT             4.8            159         -              Normal
  08/13/2018 04 PM PDT             4.8            161         +              Normal
  08/13/2018 05 PM PDT             4.8            159         -              Normal
  08/13/2018 06 PM PDT             4.7            156         -              Normal
  08/13/2018 07 PM PDT             4.7            156         0              Normal
  08/13/2018 08 PM PDT             4.7            156         0              Normal
  08/13/2018 09 PM PDT             4.7            156         0              Normal
  08/13/2018 10 PM PDT             4.7            156         0              Normal
  08/13/2018 11 PM PDT             4.8            158         +              Normal
  08/14/2018 12 AM PDT             4.7            156         -              Normal
  08/14/2018 01 AM PDT             4.7            156         0              Normal
  08/14/2018 02 AM PDT             4.7            156         0              Normal
  08/14/2018 03 AM PDT             4.7            156         0              Normal
  08/14/2018 04 AM PDT             4.7            156         0              Normal
  08/14/2018 05 AM PDT             4.7            154         -              Normal
  08/14/2018 06 AM PDT             4.7            152         -              Normal
  08/14/2018 07 AM PDT             4.7            154         +              Normal
  08/14/2018 08 AM PDT             4.7            154         0              Normal
  08/14/2018 09 AM PDT             4.7            154         0              Normal
  08/14/2018 10 AM PDT             4.7            154         0              Normal
  08/14/2018 11 AM PDT             4.7            152         -              Normal
  08/14/2018 12 PM PDT             4.7            152         0              Normal
  08/14/2018 01 PM PDT             4.7            152         0              Normal
  08/14/2018 02 PM PDT             4.7            154         +              Normal
  08/14/2018 03 PM PDT             4.7            154         0              Normal
  08/14/2018 04 PM PDT             4.7            156         +              Normal
  08/14/2018 05 PM PDT             4.7            156         0              Normal
  08/14/2018 06 PM PDT             4.7            156         0              Normal
  08/14/2018 07 PM PDT             4.7            156         0              Normal
  08/14/2018 08 PM PDT             4.7            156         0              Normal
  08/14/2018 09 PM PDT             4.8            158         +              Normal
  08/14/2018 10 PM PDT             4.7            156         -              Normal
  08/14/2018 11 PM PDT             4.7            154         -              Normal
  08/15/2018 12 AM PDT             4.7            154         0              Normal
  08/15/2018 01 AM PDT             4.7            152         -              Normal
  08/15/2018 02 AM PDT             4.7            152         0              Normal
  08/15/2018 03 AM PDT             4.7            152         0              Normal
  08/15/2018 04 AM PDT             4.7            150         -              Normal
  08/15/2018 05 AM PDT             4.7            148         -              Normal
  08/15/2018 06 AM PDT             4.7            147         -              Normal
  08/15/2018 07 AM PDT             4.7            147         0              Normal
  08/15/2018 08 AM PDT             4.7            145         -              Normal
  08/15/2018 09 AM PDT             4.7            145         0              Normal
  08/15/2018 10 AM PDT             4.6            140         -              Normal
  08/15/2018 11 AM PDT             4.6            137         -              Normal
  08/15/2018 12 PM PDT             4.6            137         0              Normal
  08/15/2018 01 PM PDT             4.6            140         +              Normal
  08/15/2018 02 PM PDT             4.7            142         +              Normal
  08/15/2018 03 PM PDT             4.7            142         0              Normal
  08/15/2018 04 PM PDT             4.7            143         +              Normal
  08/15/2018 05 PM PDT             4.7            145         +              Normal
  08/15/2018 06 PM PDT             4.7            147         +              Normal
  08/15/2018 07 PM PDT             4.7            147         0              Normal
  08/15/2018 08 PM PDT             4.7            145         -              Normal
  08/15/2018 09 PM PDT             4.7            147         +              Normal
  08/15/2018 10 PM PDT             4.7            143         -              Normal
  08/15/2018 11 PM PDT             4.7            145         +              Normal
  08/16/2018 12 AM PDT             4.7            143         -              Normal
  08/16/2018 01 AM PDT             4.7            145         +              Normal
  08/16/2018 02 AM PDT             4.7            143         -              Normal
  08/16/2018 03 AM PDT             4.7            145         +              Normal
  08/16/2018 04 AM PDT             4.7            142         -              Normal
  08/16/2018 05 AM PDT             4.7            142         0              Normal
  08/16/2018 06 AM PDT             4.7            142         0              Normal
  08/16/2018 07 AM PDT             4.7            143         +              Normal
  08/16/2018 08 AM PDT             4.7            142         -              Normal
  08/16/2018 09 AM PDT             4.7            142         0              Normal
  08/16/2018 10 AM PDT             4.6            140         -              Normal
  08/16/2018 11 AM PDT             4.7            142         +              Normal
  08/16/2018 12 PM PDT             4.6            140         -              Normal
  08/16/2018 01 PM PDT             4.6            140         0              Normal
  08/16/2018 02 PM PDT             4.6            140         0              Normal
  08/16/2018 03 PM PDT             4.6            138         -              Normal
  08/16/2018 04 PM PDT             4.6            137         -              Normal
  08/16/2018 05 PM PDT             4.6            135         -              Normal
  08/16/2018 06 PM PDT             4.6            133         -              Normal
  08/16/2018 07 PM PDT             4.6            132         -              Normal
  08/16/2018 08 PM PDT             4.6            132         0              Normal
  08/16/2018 09 PM PDT             4.6            132         0              Normal
  08/16/2018 10 PM PDT             4.6            130         -              Normal
  08/16/2018 11 PM PDT             4.6            130         0              Normal
  08/17/2018 12 AM PDT             4.6            129         -              Normal
  08/17/2018 01 AM PDT             4.6            129         0              Normal
  08/17/2018 02 AM PDT             4.6            130         +              Normal
  08/17/2018 03 AM PDT             4.6            133         +              Normal
  08/17/2018 04 AM PDT             4.6            135         +              Normal
  08/17/2018 05 AM PDT             4.6            137         +              Normal
  08/17/2018 06 AM PDT             4.6            140         +              Normal
  08/17/2018 07 AM PDT             4.7            142         +              Normal
  08/17/2018 08 AM PDT             4.7            143         +              Normal
  08/17/2018 09 AM PDT             4.7            142         -              Normal
  08/17/2018 10 AM PDT             4.6            133         -              Normal
  08/17/2018 11 AM PDT             4.6            130         -              Normal
  08/17/2018 12 PM PDT             4.6            127         -              Normal
  08/17/2018 01 PM PDT             4.6            127         0              Normal
  08/17/2018 02 PM PDT             4.6            127         0              Normal
  08/17/2018 03 PM PDT             4.6            125         -              Normal
  08/17/2018 04 PM PDT             4.6            127         +              Normal
  08/17/2018 05 PM PDT             4.6            125         -              Normal
  08/17/2018 06 PM PDT             4.5            124         -              Normal
  08/17/2018 07 PM PDT             4.5            122         -              Normal
  08/17/2018 08 PM PDT             4.6            125         +              Normal
  08/17/2018 09 PM PDT             4.5            122         -              Normal
  08/17/2018 10 PM PDT             4.5            122         0              Normal
  08/17/2018 11 PM PDT             4.5            121         -              Normal
  08/18/2018 12 AM PDT             4.5            121         0              Normal
  08/18/2018 01 AM PDT             4.5            122         +              Normal
  08/18/2018 02 AM PDT             4.5            122         0              Normal
  08/18/2018 03 AM PDT             4.5            122         0              Normal
  08/18/2018 04 AM PDT             4.5            119         -              Normal
  08/18/2018 05 AM PDT             4.5            118         -              Normal
  08/18/2018 06 AM PDT             4.5            118         0              Normal
  08/18/2018 07 AM PDT             4.5            118         0              Normal
  08/18/2018 08 AM PDT             4.5            118         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  08/18/2018 09 AM PDT             4.5            118                        Normal
  08/18/2018 10 AM PDT             4.5            118         0              Normal
  08/18/2018 11 AM PDT             4.5            119         +              Normal
  08/18/2018 12 PM PDT             4.5            119         0              Normal
  08/18/2018 01 PM PDT             4.5            119         0              Normal
  08/18/2018 02 PM PDT             4.5            119         0              Normal
  08/18/2018 03 PM PDT             4.5            119         0              Normal
  08/18/2018 04 PM PDT             4.5            119         0              Normal
  08/18/2018 05 PM PDT             4.5            119         0              Normal
  08/18/2018 06 PM PDT             4.5            120         +              Normal
  08/18/2018 07 PM PDT             4.5            120         0              Normal
  08/18/2018 08 PM PDT             4.5            120         0              Normal
  08/18/2018 09 PM PDT             4.5            120         0              Normal
  08/18/2018 10 PM PDT             4.5            120         0              Normal
  08/18/2018 11 PM PDT             4.5            121         +              Normal
  08/19/2018 12 AM PDT             4.5            121         0              Normal
  08/19/2018 01 AM PDT             4.5            121         0              Normal
  08/19/2018 02 AM PDT             4.5            121         0              Normal
  08/19/2018 03 AM PDT             4.5            121         0              Normal
  08/19/2018 04 AM PDT             4.5            120         -              Normal
  08/19/2018 05 AM PDT             4.5            120         0              Normal
  08/19/2018 06 AM PDT             4.5            120         0              Normal
  08/19/2018 07 AM PDT             4.5            120         0              Normal
  08/19/2018 08 AM PDT             4.5            120         0              Normal
  08/19/2018 09 AM PDT             4.5            120         0              Normal
  08/19/2018 10 AM PDT             4.5            119         -              Normal
  08/19/2018 11 AM PDT             4.5            119         0              Normal
  08/19/2018 12 PM PDT             4.5            119         0              Normal
  08/19/2018 01 PM PDT             4.5            119         0              Normal
  08/19/2018 02 PM PDT             4.5            119         0              Normal
  08/19/2018 03 PM PDT             4.5            118         -              Normal
  08/19/2018 04 PM PDT             4.5            118         0              Normal
  08/19/2018 05 PM PDT             4.5            118         0              Normal
  08/19/2018 06 PM PDT             4.5            119         +              Normal
  08/19/2018 07 PM PDT             4.5            119         0              Normal
  08/19/2018 08 PM PDT             4.5            118         -              Normal
  08/19/2018 09 PM PDT             4.5            118         0              Normal
  08/19/2018 10 PM PDT             4.5            118         0              Normal
  08/19/2018 11 PM PDT             4.5            118         0              Normal
  08/20/2018 12 AM PDT             4.5            118         0              Normal
  08/20/2018 01 AM PDT             4.5            118         0              Normal
  08/20/2018 02 AM PDT             4.5            118         0              Normal
  08/20/2018 03 AM PDT             4.5            118         0              Normal
  08/20/2018 04 AM PDT             4.5            118         0              Normal
  08/20/2018 05 AM PDT             4.5            118         0              Normal
  08/20/2018 06 AM PDT             4.5            118         0              Normal
  08/20/2018 07 AM PDT             4.5            118         0              Normal
  08/20/2018 08 AM PDT             4.5            117         -              Normal
  08/20/2018 09 AM PDT             4.5            117         0              Normal
  08/20/2018 10 AM PDT             4.5            117         0              Normal
  08/20/2018 11 AM PDT             4.5            117         0              Normal
  08/20/2018 12 PM PDT             4.5            117         0              Normal
  08/20/2018 01 PM PDT             4.5            117         0              Normal
  08/20/2018 02 PM PDT             4.5            117         0              Normal
  08/20/2018 03 PM PDT             4.5            116         -              Normal
  08/20/2018 04 PM PDT             4.5            116         0              Normal
  08/20/2018 05 PM PDT             4.5            116         0              Normal
  08/20/2018 06 PM PDT             4.5            117         +              Normal
  08/20/2018 07 PM PDT             4.5            117         0              Normal
  08/20/2018 08 PM PDT             4.5            117         0              Normal
  08/20/2018 09 PM PDT             4.5            117         0              Normal
  08/20/2018 10 PM PDT             4.5            117         0              Normal
  08/20/2018 11 PM PDT             4.5            118         +              Normal
  08/21/2018 12 AM PDT             4.5            118         0              Normal
  08/21/2018 01 AM PDT             4.5            118         0              Normal
  08/21/2018 02 AM PDT             4.5            118         0              Normal
  08/21/2018 03 AM PDT             4.5            118         0              Normal
  08/21/2018 04 AM PDT             4.5            118         0              Normal
  08/21/2018 05 AM PDT             4.5            118         0              Normal
  08/21/2018 06 AM PDT             4.5            118         0              Normal
  08/21/2018 07 AM PDT             4.5            118         0              Normal
  08/21/2018 08 AM PDT             4.5            118         0              Normal
  08/21/2018 09 AM PDT             4.5            118         0              Normal
  08/21/2018 10 AM PDT             4.5            118         0              Normal
  08/21/2018 11 AM PDT             4.5            118         0              Normal
  08/21/2018 12 PM PDT             4.5            118         0              Normal
  08/21/2018 01 PM PDT             4.5            118         0              Normal
  08/21/2018 02 PM PDT             4.5            118         0              Normal
  08/21/2018 03 PM PDT             4.5            118         0              Normal
  08/21/2018 04 PM PDT             4.5            118         0              Normal
  08/21/2018 05 PM PDT             4.5            118         0              Normal
  08/21/2018 06 PM PDT             4.5            119         +              Normal
  08/21/2018 07 PM PDT             4.5            119         0              Normal
  08/21/2018 08 PM PDT             4.5            119         0              Normal
  08/21/2018 09 PM PDT             4.5            119         0              Normal
  08/21/2018 10 PM PDT             4.5            119         0              Normal
  08/21/2018 11 PM PDT             4.5            119         0              Normal
  08/22/2018 12 AM PDT             4.5            119         0              Normal
  08/22/2018 01 AM PDT             4.5            120         +              Normal
  08/22/2018 02 AM PDT             4.5            120         0              Normal
  08/22/2018 03 AM PDT             4.5            120         0              Normal
  08/22/2018 04 AM PDT             4.5            120         0              Normal
  08/22/2018 05 AM PDT             4.5            120         0              Normal
  08/22/2018 06 AM PDT             4.5            120         0              Normal
  08/22/2018 07 AM PDT             4.5            120         0              Normal
  08/22/2018 08 AM PDT             4.5            120         0              Normal
  08/22/2018 09 AM PDT             4.5            120         0              Normal
  08/22/2018 10 AM PDT             4.5            120         0              Normal
  08/22/2018 11 AM PDT             4.5            120         0              Normal
  08/22/2018 12 PM PDT             4.5            120         0              Normal
  08/22/2018 01 PM PDT             4.5            120         0              Normal
  08/22/2018 02 PM PDT             4.5            120         0              Normal
  08/22/2018 03 PM PDT             4.5            120         0              Normal
  08/22/2018 04 PM PDT             4.5            120         0              Normal
  08/22/2018 05 PM PDT             4.5            120         0              Normal
  08/22/2018 06 PM PDT             4.5            121         +              Normal
  08/22/2018 07 PM PDT             4.5            121         0              Normal
  08/22/2018 08 PM PDT             4.5            121         0              Normal
  08/22/2018 09 PM PDT             4.5            121         0              Normal
  08/22/2018 10 PM PDT             4.5            121         0              Normal
  08/22/2018 11 PM PDT             4.5            121         0              Normal
  08/23/2018 12 AM PDT             4.5            121         0              Normal
  08/23/2018 01 AM PDT             4.5            122         +              Normal
  08/23/2018 02 AM PDT             4.5            122         0              Normal
  08/23/2018 03 AM PDT             4.5            122         0              Normal
  08/23/2018 04 AM PDT             4.5            122         0              Normal
  08/23/2018 05 AM PDT             4.5            122         0              Normal

# 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/or flow.
# NOTE 4: Maximum Values are determined using unrounded stage and/or flow.