Significant losses can occur in the Mason Valley upstream of the Mason stream gage. Increased forecast uncertainty exists in the long range forecast due to these unknown losses.
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Walker River - Mason at Snyder Lane (MASN2)
#
# File Generation Time: 07/13/2025 at 08:41 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 07/11/2025 at 04:00 PM PDT
# Maximum Observed Stage: 4.24 Feet
# Maximum Observed Flow: 161 cfs
#
# Earliest Date & Time of Maximum Forecast: 07/13/2025 at 09:00 AM PDT
# Maximum Forecast Stage: 4.13 Feet
# Maximum Forecast Flow: 140 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
07/08/2025 08 AM PDT 4.22 157 Normal
07/08/2025 09 AM PDT 4.22 157 0 Normal
07/08/2025 10 AM PDT 4.22 157 0 Normal
07/08/2025 11 AM PDT 4.22 157 0 Normal
07/08/2025 12 PM PDT 4.21 155 - Normal
07/08/2025 01 PM PDT 4.21 155 0 Normal
07/08/2025 02 PM PDT 4.22 157 + Normal
07/08/2025 03 PM PDT 4.22 157 0 Normal
07/08/2025 04 PM PDT 4.22 157 0 Normal
07/08/2025 05 PM PDT 4.21 155 - Normal
07/08/2025 06 PM PDT 4.20 153 - Normal
07/08/2025 07 PM PDT 4.20 153 0 Normal
07/08/2025 08 PM PDT 4.19 151 - Normal
07/08/2025 09 PM PDT 4.18 149 - Normal
07/08/2025 10 PM PDT 4.18 149 0 Normal
07/08/2025 11 PM PDT 4.18 149 0 Normal
07/09/2025 12 AM PDT 4.17 148 - Normal
07/09/2025 01 AM PDT 4.17 148 0 Normal
07/09/2025 02 AM PDT 4.17 148 0 Normal
07/09/2025 03 AM PDT 4.17 148 0 Normal
07/09/2025 04 AM PDT 4.17 148 0 Normal
07/09/2025 05 AM PDT 4.16 146 - Normal
07/09/2025 06 AM PDT 4.16 146 0 Normal
07/09/2025 07 AM PDT 4.16 146 0 Normal
07/09/2025 08 AM PDT 4.16 146 0 Normal
07/09/2025 09 AM PDT 4.17 148 + Normal
07/09/2025 10 AM PDT 4.18 149 + Normal
07/09/2025 11 AM PDT 4.18 149 0 Normal
07/09/2025 12 PM PDT 4.19 151 + Normal
07/09/2025 01 PM PDT 4.20 153 + Normal
07/09/2025 02 PM PDT 4.20 153 0 Normal
07/09/2025 03 PM PDT 4.21 155 + Normal
07/09/2025 04 PM PDT 4.20 153 - Normal
07/09/2025 05 PM PDT 4.20 153 0 Normal
07/09/2025 06 PM PDT 4.19 151 - Normal
07/09/2025 07 PM PDT 4.19 151 0 Normal
07/09/2025 08 PM PDT 4.19 151 0 Normal
07/09/2025 09 PM PDT 4.19 151 0 Normal
07/09/2025 10 PM PDT 4.19 151 0 Normal
07/09/2025 11 PM PDT 4.19 151 0 Normal
07/10/2025 12 AM PDT 4.19 151 0 Normal
07/10/2025 01 AM PDT 4.19 151 0 Normal
07/10/2025 02 AM PDT 4.19 151 0 Normal
07/10/2025 03 AM PDT 4.19 151 0 Normal
07/10/2025 04 AM PDT 4.19 151 0 Normal
07/10/2025 05 AM PDT 4.19 151 0 Normal
07/10/2025 06 AM PDT 4.19 151 0 Normal
07/10/2025 07 AM PDT 4.18 149 - Normal
07/10/2025 08 AM PDT 4.18 149 0 Normal
07/10/2025 09 AM PDT 4.18 149 0 Normal
07/10/2025 10 AM PDT 4.17 148 - Normal
07/10/2025 11 AM PDT 4.19 151 + Normal
07/10/2025 12 PM PDT 4.20 153 + Normal
07/10/2025 01 PM PDT 4.20 153 0 Normal
07/10/2025 02 PM PDT 4.20 153 0 Normal
07/10/2025 03 PM PDT 4.20 153 0 Normal
07/10/2025 04 PM PDT 4.19 151 - Normal
07/10/2025 05 PM PDT 4.19 151 0 Normal
07/10/2025 06 PM PDT 4.18 149 - Normal
07/10/2025 07 PM PDT 4.18 149 0 Normal
07/10/2025 08 PM PDT 4.18 149 0 Normal
07/10/2025 09 PM PDT 4.18 149 0 Normal
07/10/2025 10 PM PDT 4.18 149 0 Normal
07/10/2025 11 PM PDT 4.18 149 0 Normal
07/11/2025 12 AM PDT 4.18 149 0 Normal
07/11/2025 01 AM PDT 4.18 149 0 Normal
07/11/2025 02 AM PDT 4.18 149 0 Normal
07/11/2025 03 AM PDT 4.18 149 0 Normal
07/11/2025 04 AM PDT 4.18 149 0 Normal
07/11/2025 05 AM PDT 4.18 149 0 Normal
07/11/2025 06 AM PDT 4.17 148 - Normal
07/11/2025 07 AM PDT 4.17 148 0 Normal
07/11/2025 08 AM PDT 4.18 149 + Normal
07/11/2025 09 AM PDT 4.18 149 0 Normal
07/11/2025 10 AM PDT 4.18 149 0 Normal
07/11/2025 11 AM PDT 4.19 151 + Normal
07/11/2025 12 PM PDT 4.20 153 + Normal
07/11/2025 01 PM PDT 4.24 161 + Normal
07/11/2025 02 PM PDT 4.24 161 0 Normal
07/11/2025 03 PM PDT 4.24 161 0 Normal
07/11/2025 04 PM PDT 4.24 161 0 Normal
07/11/2025 05 PM PDT 4.22 157 - Normal
07/11/2025 06 PM PDT 4.22 157 0 Normal
07/11/2025 07 PM PDT 4.23 159 + Normal
07/11/2025 08 PM PDT 4.23 159 0 Normal
07/11/2025 09 PM PDT 4.23 159 0 Normal
07/11/2025 10 PM PDT 4.23 159 0 Normal
07/11/2025 11 PM PDT 4.23 159 0 Normal
07/12/2025 12 AM PDT 4.22 157 - Normal
07/12/2025 01 AM PDT 4.22 157 0 Normal
07/12/2025 02 AM PDT 4.22 157 0 Normal
07/12/2025 03 AM PDT 4.22 157 0 Normal
07/12/2025 04 AM PDT 4.22 157 0 Normal
07/12/2025 05 AM PDT 4.22 157 0 Normal
07/12/2025 06 AM PDT 4.22 157 0 Normal
07/12/2025 07 AM PDT 4.21 155 - Normal
07/12/2025 08 AM PDT 4.21 155 0 Normal
07/12/2025 09 AM PDT 4.20 153 - Normal
07/12/2025 10 AM PDT 4.20 153 0 Normal
07/12/2025 11 AM PDT 4.19 151 - Normal
07/12/2025 12 PM PDT 4.18 149 - Normal
07/12/2025 01 PM PDT 4.17 148 - Normal
07/12/2025 02 PM PDT 4.17 148 0 Normal
07/12/2025 03 PM PDT 4.17 148 0 Normal
07/12/2025 04 PM PDT 4.17 148 0 Normal
07/12/2025 05 PM PDT 4.16 146 - Normal
07/12/2025 06 PM PDT 4.17 148 + Normal
07/12/2025 07 PM PDT 4.19 151 + Normal
07/12/2025 08 PM PDT 4.20 153 + Normal
07/12/2025 09 PM PDT 4.20 153 0 Normal
07/12/2025 10 PM PDT 4.19 151 - Normal
07/12/2025 11 PM PDT 4.19 151 0 Normal
07/13/2025 12 AM PDT 4.19 151 0 Normal
07/13/2025 01 AM PDT 4.18 149 - Normal
07/13/2025 02 AM PDT 4.18 149 0 Normal
07/13/2025 03 AM PDT 4.18 149 0 Normal
07/13/2025 04 AM PDT 4.17 148 - Normal
07/13/2025 05 AM PDT 4.17 148 0 Normal
07/13/2025 06 AM PDT 4.16 146 - Normal
07/13/2025 07 AM PDT 4.15 144 - Normal
07/13/2025 08 AM PDT 4.14 142 - Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
07/13/2025 09 AM PDT 4.13 140 Normal
07/13/2025 10 AM PDT 4.13 140 0 Normal
07/13/2025 11 AM PDT 4.12 138 - Normal
07/13/2025 12 PM PDT 4.12 138 0 Normal
07/13/2025 01 PM PDT 4.11 137 - Normal
07/13/2025 02 PM PDT 4.11 137 0 Normal
07/13/2025 03 PM PDT 4.11 137 0 Normal
07/13/2025 04 PM PDT 4.10 135 - Normal
07/13/2025 05 PM PDT 4.10 135 0 Normal
07/13/2025 06 PM PDT 4.09 133 - Normal
07/13/2025 07 PM PDT 4.09 133 0 Normal
07/13/2025 08 PM PDT 4.09 133 0 Normal
07/13/2025 09 PM PDT 4.08 131 - Normal
07/13/2025 10 PM PDT 4.08 131 0 Normal
07/13/2025 11 PM PDT 4.08 131 0 Normal
07/14/2025 12 AM PDT 4.08 131 0 Normal
07/14/2025 01 AM PDT 4.08 131 0 Normal
07/14/2025 02 AM PDT 4.08 131 0 Normal
07/14/2025 03 AM PDT 4.08 131 0 Normal
07/14/2025 04 AM PDT 4.08 131 0 Normal
07/14/2025 05 AM PDT 4.08 131 0 Normal
07/14/2025 06 AM PDT 4.08 131 0 Normal
07/14/2025 07 AM PDT 4.08 131 0 Normal
07/14/2025 08 AM PDT 4.08 131 0 Normal
07/14/2025 09 AM PDT 4.08 131 0 Normal
07/14/2025 10 AM PDT 4.08 131 0 Normal
07/14/2025 11 AM PDT 4.08 131 0 Normal
07/14/2025 12 PM PDT 4.07 130 - Normal
07/14/2025 01 PM PDT 4.07 130 0 Normal
07/14/2025 02 PM PDT 4.07 130 0 Normal
07/14/2025 03 PM PDT 4.07 130 0 Normal
07/14/2025 04 PM PDT 4.07 130 0 Normal
07/14/2025 05 PM PDT 4.07 130 0 Normal
07/14/2025 06 PM PDT 4.06 128 - Normal
07/14/2025 07 PM PDT 4.06 128 0 Normal
07/14/2025 08 PM PDT 4.06 128 0 Normal
07/14/2025 09 PM PDT 4.06 128 0 Normal
07/14/2025 10 PM PDT 4.06 128 0 Normal
07/14/2025 11 PM PDT 4.06 128 0 Normal
07/15/2025 12 AM PDT 4.06 128 0 Normal
07/15/2025 01 AM PDT 4.06 128 0 Normal
07/15/2025 02 AM PDT 4.06 128 0 Normal
07/15/2025 03 AM PDT 4.06 128 0 Normal
07/15/2025 04 AM PDT 4.06 128 0 Normal
07/15/2025 05 AM PDT 4.06 128 0 Normal
07/15/2025 06 AM PDT 4.06 128 0 Normal
07/15/2025 07 AM PDT 4.06 128 0 Normal
07/15/2025 08 AM PDT 4.06 128 0 Normal
07/15/2025 09 AM PDT 4.06 128 0 Normal
07/15/2025 10 AM PDT 4.06 128 0 Normal
07/15/2025 11 AM PDT 4.06 128 0 Normal
07/15/2025 12 PM PDT 4.06 128 0 Normal
07/15/2025 01 PM PDT 4.06 128 0 Normal
07/15/2025 02 PM PDT 4.06 128 0 Normal
07/15/2025 03 PM PDT 4.06 128 0 Normal
07/15/2025 04 PM PDT 4.06 128 0 Normal
07/15/2025 05 PM PDT 4.06 128 0 Normal
07/15/2025 06 PM PDT 4.05 126 - Normal
07/15/2025 07 PM PDT 4.05 126 0 Normal
07/15/2025 08 PM PDT 4.05 126 0 Normal
07/15/2025 09 PM PDT 4.05 126 0 Normal
07/15/2025 10 PM PDT 4.05 126 0 Normal
07/15/2025 11 PM PDT 4.05 126 0 Normal
07/16/2025 12 AM PDT 4.05 126 0 Normal
07/16/2025 01 AM PDT 4.05 126 0 Normal
07/16/2025 02 AM PDT 4.05 126 0 Normal
07/16/2025 03 AM PDT 4.05 126 0 Normal
07/16/2025 04 AM PDT 4.05 126 0 Normal
07/16/2025 05 AM PDT 4.05 126 0 Normal
07/16/2025 06 AM PDT 4.05 126 0 Normal
07/16/2025 07 AM PDT 4.05 126 0 Normal
07/16/2025 08 AM PDT 4.05 126 0 Normal
07/16/2025 09 AM PDT 4.05 126 0 Normal
07/16/2025 10 AM PDT 4.05 126 0 Normal
07/16/2025 11 AM PDT 4.05 126 0 Normal
07/16/2025 12 PM PDT 4.05 126 0 Normal
07/16/2025 01 PM PDT 4.05 126 0 Normal
07/16/2025 02 PM PDT 4.05 126 0 Normal
07/16/2025 03 PM PDT 4.05 126 0 Normal
07/16/2025 04 PM PDT 4.05 126 0 Normal
07/16/2025 05 PM PDT 4.05 126 0 Normal
07/16/2025 06 PM PDT 4.05 126 0 Normal
07/16/2025 07 PM PDT 4.05 126 0 Normal
07/16/2025 08 PM PDT 4.05 126 0 Normal
07/16/2025 09 PM PDT 4.05 126 0 Normal
07/16/2025 10 PM PDT 4.06 128 + Normal
07/16/2025 11 PM PDT 4.06 128 0 Normal
07/17/2025 12 AM PDT 4.06 128 0 Normal
07/17/2025 01 AM PDT 4.06 128 0 Normal
07/17/2025 02 AM PDT 4.06 128 0 Normal
07/17/2025 03 AM PDT 4.06 128 0 Normal
07/17/2025 04 AM PDT 4.06 128 0 Normal
07/17/2025 05 AM PDT 4.06 128 0 Normal
07/17/2025 06 AM PDT 4.06 128 0 Normal
07/17/2025 07 AM PDT 4.06 128 0 Normal
07/17/2025 08 AM PDT 4.06 128 0 Normal
07/17/2025 09 AM PDT 4.06 128 0 Normal
07/17/2025 10 AM PDT 4.06 128 0 Normal
07/17/2025 11 AM PDT 4.06 128 0 Normal
07/17/2025 12 PM PDT 4.06 128 0 Normal
07/17/2025 01 PM PDT 4.06 128 0 Normal
07/17/2025 02 PM PDT 4.06 128 0 Normal
07/17/2025 03 PM PDT 4.06 128 0 Normal
07/17/2025 04 PM PDT 4.06 128 0 Normal
07/17/2025 05 PM PDT 4.06 128 0 Normal
07/17/2025 06 PM PDT 4.06 128 0 Normal
07/17/2025 07 PM PDT 4.06 128 0 Normal
07/17/2025 08 PM PDT 4.06 128 0 Normal
07/17/2025 09 PM PDT 4.06 128 0 Normal
07/17/2025 10 PM PDT 4.06 128 0 Normal
07/17/2025 11 PM PDT 4.07 130 + Normal
07/18/2025 12 AM PDT 4.07 130 0 Normal
07/18/2025 01 AM PDT 4.07 130 0 Normal
07/18/2025 02 AM PDT 4.07 130 0 Normal
07/18/2025 03 AM PDT 4.07 130 0 Normal
07/18/2025 04 AM PDT 4.07 130 0 Normal
07/18/2025 05 AM PDT 4.07 130 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.