National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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UPPER PENITENCIA CREEK - PIEDMOND ROAD (UPCC1)
Latitude: 37.39º NLongitude: 121.84º WElevation: 205 Feet
Location: Santa Clara County in CaliforniaBulletin Group: Central CoastRiver Group: South Bay
Issuance Time: Dec 31 2025 at 1:36 PM PSTNext Issuance: Jan 01 2026 at 9:00 AM PST
Action/Monitor: 6.5 FeetMinor Flood: 8.0 FeetModerate Flood: 9.0 FeetMajor Flood: 10.5 Feet


# Tabular Observed and Forecast Hydrograph Information
#
# Location: Upper Penitencia Creek - Piedmont Road (UPCC1)
#
# File Generation Time:  12/31/2025 at 01:41 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  12/26/2025 at 07:00 PM PST
# Maximum Observed Stage:                       5.08 Feet
# Maximum Observed Flow:                        5 cfs
#
# Earliest Date & Time of Maximum Forecast:     01/04/2026 at 04:00 PM PST
# Maximum Forecast Stage:                       5.88 Feet
# Maximum Forecast Flow:                        137 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  12/26/2025 01 PM PST            5.07              5                        Normal
  12/26/2025 02 PM PST            5.07              5         0              Normal
  12/26/2025 03 PM PST            5.07              5         0              Normal
  12/26/2025 04 PM PST            5.07              5         0              Normal
  12/26/2025 05 PM PST            5.07              5         0              Normal
  12/26/2025 06 PM PST            5.08              5         +              Normal
  12/26/2025 07 PM PST            5.08              5         0              Normal
  12/26/2025 08 PM PST            5.06              4         -              Normal
  12/26/2025 09 PM PST            5.04              4         -              Normal
  12/26/2025 10 PM PST            5.03              3         -              Normal
  12/26/2025 11 PM PST            5.02              3         -              Normal
  12/27/2025 12 AM PST            5.01              3         -              Normal
  12/27/2025 01 AM PST            5.00              3         -              Normal
  12/27/2025 02 AM PST            4.99              2         -              Normal
  12/27/2025 03 AM PST            4.98              2         -              Normal
  12/27/2025 04 AM PST            4.97              2         -              Normal
  12/27/2025 05 AM PST            4.97              2         0              Normal
  12/27/2025 06 AM PST            4.97              2         0              Normal
  12/27/2025 07 AM PST            4.97              2         0              Normal
  12/27/2025 08 AM PST            4.96              2         -              Normal
  12/27/2025 09 AM PST            4.96              2         0              Normal
  12/27/2025 10 AM PST            4.96              2         0              Normal
  12/27/2025 11 AM PST            4.97              2         +              Normal
  12/27/2025 12 PM PST            4.94              1         -              Normal
  12/27/2025 01 PM PST            4.96              2         +              Normal
  12/27/2025 02 PM PST            4.96              2         0              Normal
  12/27/2025 03 PM PST            4.95              2         -              Normal
  12/27/2025 04 PM PST            4.95              2         0              Normal
  12/27/2025 05 PM PST            4.93              1         -              Normal
  12/27/2025 06 PM PST            4.96              2         +              Normal
  12/27/2025 07 PM PST            4.93              1         -              Normal
  12/27/2025 08 PM PST            4.92              1         -              Normal
  12/27/2025 09 PM PST            4.91              1         -              Normal
  12/27/2025 10 PM PST            4.91              1         0              Normal
  12/27/2025 11 PM PST            4.90              1         -              Normal
  12/28/2025 12 AM PST            4.89              1         -              Normal
  12/28/2025 01 AM PST            4.89              1         0              Normal
  12/28/2025 02 AM PST            4.88              1         -              Normal
  12/28/2025 03 AM PST            4.87              1         -              Normal
  12/28/2025 04 AM PST            4.86              0         -              Normal
  12/28/2025 05 AM PST            4.85              0         -              Normal
  12/28/2025 06 AM PST            4.84              0         -              Normal
  12/28/2025 07 AM PST            4.83              0         -              Normal
  12/28/2025 08 AM PST            4.82              0         -              Normal
  12/28/2025 09 AM PST            4.81              0         -              Normal
  12/28/2025 10 AM PST            4.79              0         -              Normal
  12/28/2025 11 AM PST            4.78              0         -              Normal
  12/28/2025 12 PM PST            4.76              0         -              Normal
  12/28/2025 01 PM PST            4.73              0         -              Normal
  12/28/2025 02 PM PST            4.72              0         -              Normal
  12/28/2025 03 PM PST            4.72              0         0              Normal
  12/28/2025 04 PM PST            4.72              0         0              Normal
  12/28/2025 05 PM PST            4.72              0         0              Normal
  12/28/2025 06 PM PST            4.72              0         0              Normal
  12/28/2025 07 PM PST            4.72              0         0              Normal
  12/28/2025 08 PM PST            4.72              0         0              Normal
  12/28/2025 09 PM PST            4.72              0         0              Normal
  12/28/2025 10 PM PST            4.72              0         0              Normal
  12/28/2025 11 PM PST            4.72              0         0              Normal
  12/29/2025 12 AM PST            4.72              0         0              Normal
  12/29/2025 01 AM PST            4.72              0         0              Normal
  12/29/2025 02 AM PST            4.72              0         0              Normal
  12/29/2025 03 AM PST            4.72              0         0              Normal
  12/29/2025 04 AM PST            4.72              0         0              Normal
  12/29/2025 05 AM PST            4.72              0         0              Normal
  12/29/2025 06 AM PST            4.72              0         0              Normal
  12/29/2025 07 AM PST            4.72              0         0              Normal
  12/29/2025 08 AM PST            4.72              0         0              Normal
  12/29/2025 09 AM PST            4.72              0         0              Normal
  12/29/2025 10 AM PST            4.72              0         0              Normal
  12/29/2025 11 AM PST            4.72              0         0              Normal
  12/29/2025 12 PM PST            4.72              0         0              Normal
  12/29/2025 01 PM PST            4.72              0         0              Normal
  12/29/2025 02 PM PST            4.72              0         0              Normal
  12/29/2025 03 PM PST            4.72              0         0              Normal
  12/29/2025 04 PM PST            4.72              0         0              Normal
  12/29/2025 05 PM PST            4.72              0         0              Normal
  12/29/2025 06 PM PST            4.72              0         0              Normal
  12/29/2025 07 PM PST            4.72              0         0              Normal
  12/29/2025 08 PM PST            4.72              0         0              Normal
  12/29/2025 09 PM PST            4.72              0         0              Normal
  12/29/2025 10 PM PST            4.72              0         0              Normal
  12/29/2025 11 PM PST            4.72              0         0              Normal
  12/30/2025 12 AM PST            4.72              0         0              Normal
  12/30/2025 01 AM PST            4.72              0         0              Normal
  12/30/2025 02 AM PST            4.72              0         0              Normal
  12/30/2025 03 AM PST            4.72              0         0              Normal
  12/30/2025 04 AM PST            4.72              0         0              Normal
  12/30/2025 05 AM PST            4.72              0         0              Normal
  12/30/2025 06 AM PST            4.72              0         0              Normal
  12/30/2025 07 AM PST            4.72              0         0              Normal
  12/30/2025 08 AM PST            4.72              0         0              Normal
  12/30/2025 09 AM PST            4.72              0         0              Normal
  12/30/2025 10 AM PST            4.72              0         0              Normal
  12/30/2025 11 AM PST            4.72              0         0              Normal
  12/30/2025 12 PM PST            4.72              0         0              Normal
  12/30/2025 01 PM PST            4.72              0         0              Normal
  12/30/2025 02 PM PST            4.72              0         0              Normal
  12/30/2025 03 PM PST            4.72              0         0              Normal
  12/30/2025 04 PM PST            4.72              0         0              Normal
  12/30/2025 05 PM PST            4.72              0         0              Normal
  12/30/2025 06 PM PST            4.72              0         0              Normal
  12/30/2025 07 PM PST            4.72              0         0              Normal
  12/30/2025 08 PM PST            4.72              0         0              Normal
  12/30/2025 09 PM PST            4.72              0         0              Normal
  12/30/2025 10 PM PST            4.72              0         0              Normal
  12/30/2025 11 PM PST            4.72              0         0              Normal
  12/31/2025 12 AM PST            4.72              0         0              Normal
  12/31/2025 01 AM PST            4.72              0         0              Normal
  12/31/2025 02 AM PST            4.72              0         0              Normal
  12/31/2025 03 AM PST            4.72              0         0              Normal
  12/31/2025 04 AM PST            4.72              0         0              Normal
  12/31/2025 05 AM PST            4.72              0         0              Normal
  12/31/2025 06 AM PST            4.72              0         0              Normal
  12/31/2025 07 AM PST            4.72              0         0              Normal
  12/31/2025 08 AM PST            4.72              0         0              Normal
  12/31/2025 09 AM PST            4.72              0         0              Normal
  12/31/2025 10 AM PST            4.72              0         0              Normal
  12/31/2025 11 AM PST            4.72              0         0              Normal
  12/31/2025 12 PM PST            4.72              0         0              Normal
  12/31/2025 01 PM PST            4.72              0         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  12/31/2025 02 PM PST            4.72              0                        Normal
  12/31/2025 03 PM PST            4.72              0         0              Normal
  12/31/2025 04 PM PST            4.73              0         +              Normal
  12/31/2025 05 PM PST            4.74              0         +              Normal
  12/31/2025 06 PM PST            4.76              0         +              Normal
  12/31/2025 07 PM PST            4.76              0         0              Normal
  12/31/2025 08 PM PST            4.76              0         0              Normal
  12/31/2025 09 PM PST            4.78              0         +              Normal
  12/31/2025 10 PM PST            4.78              0         0              Normal
  12/31/2025 11 PM PST            4.78              0         0              Normal
  01/01/2026 12 AM PST            4.79              0         +              Normal
  01/01/2026 01 AM PST            4.79              0         0              Normal
  01/01/2026 02 AM PST            4.79              0         0              Normal
  01/01/2026 03 AM PST            4.80              0         +              Normal
  01/01/2026 04 AM PST            4.80              0         0              Normal
  01/01/2026 05 AM PST            4.83              0         +              Normal
  01/01/2026 06 AM PST            4.85              0         +              Normal
  01/01/2026 07 AM PST            4.86              0         +              Normal
  01/01/2026 08 AM PST            4.87              1         +              Normal
  01/01/2026 09 AM PST            4.89              1         +              Normal
  01/01/2026 10 AM PST            4.89              1         0              Normal
  01/01/2026 11 AM PST            5.04              4         +              Normal
  01/01/2026 12 PM PST            5.13              7         +              Normal
  01/01/2026 01 PM PST            5.20             10         +              Normal
  01/01/2026 02 PM PST            5.25             13         +              Normal
  01/01/2026 03 PM PST            5.30             16         +              Normal
  01/01/2026 04 PM PST            5.34             19         +              Normal
  01/01/2026 05 PM PST            5.34             19         0              Normal
  01/01/2026 06 PM PST            5.34             19         0              Normal
  01/01/2026 07 PM PST            5.34             19         0              Normal
  01/01/2026 08 PM PST            5.34             19         0              Normal
  01/01/2026 09 PM PST            5.34             19         0              Normal
  01/01/2026 10 PM PST            5.34             19         0              Normal
  01/01/2026 11 PM PST            5.33             18         -              Normal
  01/02/2026 12 AM PST            5.32             18         -              Normal
  01/02/2026 01 AM PST            5.32             18         0              Normal
  01/02/2026 02 AM PST            5.31             17         -              Normal
  01/02/2026 03 AM PST            5.30             16         -              Normal
  01/02/2026 04 AM PST            5.29             15         -              Normal
  01/02/2026 05 AM PST            5.28             15         -              Normal
  01/02/2026 06 AM PST            5.27             14         -              Normal
  01/02/2026 07 AM PST            5.26             13         -              Normal
  01/02/2026 08 AM PST            5.24             12         -              Normal
  01/02/2026 09 AM PST            5.23             12         -              Normal
  01/02/2026 10 AM PST            5.21             11         -              Normal
  01/02/2026 11 AM PST            5.20             10         -              Normal
  01/02/2026 12 PM PST            5.19             10         -              Normal
  01/02/2026 01 PM PST            5.18              9         -              Normal
  01/02/2026 02 PM PST            5.17              9         -              Normal
  01/02/2026 03 PM PST            5.16              8         -              Normal
  01/02/2026 04 PM PST            5.14              7         -              Normal
  01/02/2026 05 PM PST            5.14              7         0              Normal
  01/02/2026 06 PM PST            5.13              7         -              Normal
  01/02/2026 07 PM PST            5.12              7         -              Normal
  01/02/2026 08 PM PST            5.11              6         -              Normal
  01/02/2026 09 PM PST            5.10              6         -              Normal
  01/02/2026 10 PM PST            5.09              6         -              Normal
  01/02/2026 11 PM PST            5.20             10         +              Normal
  01/03/2026 12 AM PST            5.28             15         +              Normal
  01/03/2026 01 AM PST            5.34             19         +              Normal
  01/03/2026 02 AM PST            5.39             23         +              Normal
  01/03/2026 03 AM PST            5.44             28         +              Normal
  01/03/2026 04 AM PST            5.48             33         +              Normal
  01/03/2026 05 AM PST            5.53             39         +              Normal
  01/03/2026 06 AM PST            5.57             46         +              Normal
  01/03/2026 07 AM PST            5.60             54         +              Normal
  01/03/2026 08 AM PST            5.62             59         +              Normal
  01/03/2026 09 AM PST            5.65             67         +              Normal
  01/03/2026 10 AM PST            5.67             73         +              Normal
  01/03/2026 11 AM PST            5.68             76         +              Normal
  01/03/2026 12 PM PST            5.68             76         0              Normal
  01/03/2026 01 PM PST            5.68             76         0              Normal
  01/03/2026 02 PM PST            5.68             76         0              Normal
  01/03/2026 03 PM PST            5.68             76         0              Normal
  01/03/2026 04 PM PST            5.68             76         0              Normal
  01/03/2026 05 PM PST            5.67             73         -              Normal
  01/03/2026 06 PM PST            5.67             73         0              Normal
  01/03/2026 07 PM PST            5.66             70         -              Normal
  01/03/2026 08 PM PST            5.65             67         -              Normal
  01/03/2026 09 PM PST            5.64             65         -              Normal
  01/03/2026 10 PM PST            5.64             65         0              Normal
  01/03/2026 11 PM PST            5.64             65         0              Normal
  01/04/2026 12 AM PST            5.64             65         0              Normal
  01/04/2026 01 AM PST            5.64             65         0              Normal
  01/04/2026 02 AM PST            5.64             65         0              Normal
  01/04/2026 03 AM PST            5.65             67         +              Normal
  01/04/2026 04 AM PST            5.65             67         0              Normal
  01/04/2026 05 AM PST            5.67             73         +              Normal
  01/04/2026 06 AM PST            5.69             79         +              Normal
  01/04/2026 07 AM PST            5.71             84         +              Normal
  01/04/2026 08 AM PST            5.73             90         +              Normal
  01/04/2026 09 AM PST            5.75             96         +              Normal
  01/04/2026 10 AM PST            5.77            102         +              Normal
  01/04/2026 11 AM PST            5.79            109         +              Normal
  01/04/2026 12 PM PST            5.80            112         +              Normal
  01/04/2026 01 PM PST            5.82            118         +              Normal
  01/04/2026 02 PM PST            5.84            124         +              Normal
  01/04/2026 03 PM PST            5.86            131         +              Normal
  01/04/2026 04 PM PST            5.88            137         +              Normal
  01/04/2026 05 PM PST            5.87            134         -              Normal
  01/04/2026 06 PM PST            5.87            134         0              Normal
  01/04/2026 07 PM PST            5.87            134         0              Normal
  01/04/2026 08 PM PST            5.87            134         0              Normal
  01/04/2026 09 PM PST            5.86            131         -              Normal
  01/04/2026 10 PM PST            5.86            131         0              Normal
  01/04/2026 11 PM PST            5.85            128         -              Normal
  01/05/2026 12 AM PST            5.84            124         -              Normal
  01/05/2026 01 AM PST            5.83            121         -              Normal
  01/05/2026 02 AM PST            5.83            121         0              Normal
  01/05/2026 03 AM PST            5.82            118         -              Normal
  01/05/2026 04 AM PST            5.81            115         -              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.