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

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SAN LORENZO CREEK - HAYWARD (LRZC1)
Latitude: 37.69º NLongitude: 122.06º WElevation: 133 Feet
Location: Alameda County in CaliforniaBulletin Group: Central CoastRiver Group: South Bay
Issuance Time: Feb 12 2026 at 1:00 PM PSTNext Issuance: Feb 13 2026 at 9:00 AM PST
Action/Monitor: 20.85 FeetMinor Flood: 24.6 FeetModerate Flood: N/A Major Flood: N/A


# Tabular Observed and Forecast Hydrograph Information
#
# Location: San Lorenzo Creek - Hayward (LRZC1)
#
# File Generation Time:  02/12/2026 at 01:02 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  02/11/2026 at 04:00 AM PST
# Maximum Observed Stage:                       3.22 Feet
# Maximum Observed Flow:                        19 cfs
#
# Earliest Date & Time of Maximum Forecast:     02/16/2026 at 01:00 PM PST
# Maximum Forecast Stage:                       3.64 Feet
# Maximum Forecast Flow:                        36 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  02/07/2026 01 PM PST            2.83              5                        Normal
  02/07/2026 02 PM PST            2.83              5         0              Normal
  02/07/2026 03 PM PST            2.83              5         0              Normal
  02/07/2026 04 PM PST            2.83              5         0              Normal
  02/07/2026 05 PM PST            2.83              5         0              Normal
  02/07/2026 06 PM PST            2.83              5         0              Normal
  02/07/2026 07 PM PST            2.83              5         0              Normal
  02/07/2026 08 PM PST            2.83              5         0              Normal
  02/07/2026 09 PM PST            2.83              5         0              Normal
  02/07/2026 10 PM PST            2.83              5         0              Normal
  02/07/2026 11 PM PST            2.83              5         0              Normal
  02/08/2026 12 AM PST            2.83              5         0              Normal
  02/08/2026 01 AM PST            2.83              5         0              Normal
  02/08/2026 02 AM PST            2.83              5         0              Normal
  02/08/2026 03 AM PST            2.83              5         0              Normal
  02/08/2026 04 AM PST            2.82              4         -              Normal
  02/08/2026 05 AM PST            2.83              5         +              Normal
  02/08/2026 06 AM PST            2.82              4         -              Normal
  02/08/2026 07 AM PST            2.82              4         0              Normal
  02/08/2026 08 AM PST            2.82              4         0              Normal
  02/08/2026 09 AM PST            2.83              5         +              Normal
  02/08/2026 10 AM PST            2.83              5         0              Normal
  02/08/2026 11 AM PST            2.83              5         0              Normal
  02/08/2026 12 PM PST            2.83              5         0              Normal
  02/08/2026 01 PM PST            2.83              5         0              Normal
  02/08/2026 02 PM PST            2.83              5         0              Normal
  02/08/2026 03 PM PST            2.83              5         0              Normal
  02/08/2026 04 PM PST            2.83              5         0              Normal
  02/08/2026 05 PM PST            2.83              5         0              Normal
  02/08/2026 06 PM PST            2.83              5         0              Normal
  02/08/2026 07 PM PST            2.83              5         0              Normal
  02/08/2026 08 PM PST            2.83              5         0              Normal
  02/08/2026 09 PM PST            2.83              5         0              Normal
  02/08/2026 10 PM PST            2.83              5         0              Normal
  02/08/2026 11 PM PST            2.83              5         0              Normal
  02/09/2026 12 AM PST            2.83              5         0              Normal
  02/09/2026 01 AM PST            2.83              5         0              Normal
  02/09/2026 02 AM PST            2.83              5         0              Normal
  02/09/2026 03 AM PST            2.83              5         0              Normal
  02/09/2026 04 AM PST            2.83              5         0              Normal
  02/09/2026 05 AM PST            2.83              5         0              Normal
  02/09/2026 06 AM PST            2.83              5         0              Normal
  02/09/2026 07 AM PST            2.83              5         0              Normal
  02/09/2026 08 AM PST            2.83              5         0              Normal
  02/09/2026 09 AM PST            2.83              5         0              Normal
  02/09/2026 10 AM PST            2.83              5         0              Normal
  02/09/2026 11 AM PST            2.83              5         0              Normal
  02/09/2026 12 PM PST            2.83              5         0              Normal
  02/09/2026 01 PM PST            2.83              5         0              Normal
  02/09/2026 02 PM PST            2.83              5         0              Normal
  02/09/2026 03 PM PST            2.83              5         0              Normal
  02/09/2026 04 PM PST            2.83              5         0              Normal
  02/09/2026 05 PM PST            2.83              5         0              Normal
  02/09/2026 06 PM PST            2.83              5         0              Normal
  02/09/2026 07 PM PST            2.83              5         0              Normal
  02/09/2026 08 PM PST            2.83              5         0              Normal
  02/09/2026 09 PM PST            2.83              5         0              Normal
  02/09/2026 10 PM PST            2.83              5         0              Normal
  02/09/2026 11 PM PST            2.83              5         0              Normal
  02/10/2026 12 AM PST            2.83              5         0              Normal
  02/10/2026 01 AM PST            2.83              5         0              Normal
  02/10/2026 02 AM PST            2.83              5         0              Normal
  02/10/2026 03 AM PST            2.83              5         0              Normal
  02/10/2026 04 AM PST            2.83              5         0              Normal
  02/10/2026 05 AM PST            2.83              5         0              Normal
  02/10/2026 06 AM PST            2.83              5         0              Normal
  02/10/2026 07 AM PST            2.83              5         0              Normal
  02/10/2026 08 AM PST            2.82              4         -              Normal
  02/10/2026 09 AM PST            2.83              5         +              Normal
  02/10/2026 10 AM PST            2.83              5         0              Normal
  02/10/2026 11 AM PST            2.83              5         0              Normal
  02/10/2026 12 PM PST            2.83              5         0              Normal
  02/10/2026 01 PM PST            2.83              5         0              Normal
  02/10/2026 02 PM PST            2.83              5         0              Normal
  02/10/2026 03 PM PST            2.83              5         0              Normal
  02/10/2026 04 PM PST            2.83              5         0              Normal
  02/10/2026 05 PM PST            2.80              4         -              Normal
  02/10/2026 06 PM PST            2.84              5         +              Normal
  02/10/2026 07 PM PST            2.85              5         +              Normal
  02/10/2026 08 PM PST            2.88              6         +              Normal
  02/10/2026 09 PM PST            2.90              6         +              Normal
  02/10/2026 10 PM PST            2.92              7         +              Normal
  02/10/2026 11 PM PST            2.89              6         -              Normal
  02/11/2026 12 AM PST            2.86              5         -              Normal
  02/11/2026 01 AM PST            2.86              5         0              Normal
  02/11/2026 02 AM PST            2.95              8         +              Normal
  02/11/2026 03 AM PST            3.03             11         +              Normal
  02/11/2026 04 AM PST            3.22             19         +              Normal
  02/11/2026 05 AM PST            3.08             13         -              Normal
  02/11/2026 06 AM PST            2.99              9         -              Normal
  02/11/2026 07 AM PST            2.97              9         -              Normal
  02/11/2026 08 AM PST            2.94              8         -              Normal
  02/11/2026 09 AM PST            2.91              7         -              Normal
  02/11/2026 10 AM PST            2.89              6         -              Normal
  02/11/2026 11 AM PST            2.87              6         -              Normal
  02/11/2026 12 PM PST            2.86              5         -              Normal
  02/11/2026 01 PM PST            2.85              5         -              Normal
  02/11/2026 02 PM PST            2.85              5         0              Normal
  02/11/2026 03 PM PST            2.86              5         +              Normal
  02/11/2026 04 PM PST            2.88              6         +              Normal
  02/11/2026 05 PM PST            2.89              6         +              Normal
  02/11/2026 06 PM PST            2.88              6         -              Normal
  02/11/2026 07 PM PST            2.87              6         -              Normal
  02/11/2026 08 PM PST            2.86              5         -              Normal
  02/11/2026 09 PM PST            2.84              5         -              Normal
  02/11/2026 10 PM PST            2.83              5         -              Normal
  02/11/2026 11 PM PST            2.82              4         -              Normal
  02/12/2026 12 AM PST            2.83              5         +              Normal
  02/12/2026 01 AM PST            2.83              5         0              Normal
  02/12/2026 02 AM PST            2.83              5         0              Normal
  02/12/2026 03 AM PST            2.81              4         -              Normal
  02/12/2026 04 AM PST            2.82              4         +              Normal
  02/12/2026 05 AM PST            2.81              4         -              Normal
  02/12/2026 06 AM PST            2.80              4         -              Normal
  02/12/2026 07 AM PST            2.80              4         0              Normal
  02/12/2026 08 AM PST            2.80              4         0              Normal
  02/12/2026 09 AM PST            2.80              4         0              Normal
  02/12/2026 10 AM PST            2.80              4         0              Normal
  02/12/2026 11 AM PST            2.80              4         0              Normal
  02/12/2026 12 PM PST            2.80              4         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  02/12/2026 01 PM PST            2.80              4                        Normal
  02/12/2026 02 PM PST            2.80              4         0              Normal
  02/12/2026 03 PM PST            2.79              4         -              Normal
  02/12/2026 04 PM PST            2.79              4         0              Normal
  02/12/2026 05 PM PST            2.79              4         0              Normal
  02/12/2026 06 PM PST            2.79              4         0              Normal
  02/12/2026 07 PM PST            2.79              4         0              Normal
  02/12/2026 08 PM PST            2.79              4         0              Normal
  02/12/2026 09 PM PST            2.79              4         0              Normal
  02/12/2026 10 PM PST            2.79              4         0              Normal
  02/12/2026 11 PM PST            2.79              4         0              Normal
  02/13/2026 12 AM PST            2.79              4         0              Normal
  02/13/2026 01 AM PST            2.79              4         0              Normal
  02/13/2026 02 AM PST            2.79              4         0              Normal
  02/13/2026 03 AM PST            2.79              4         0              Normal
  02/13/2026 04 AM PST            2.79              4         0              Normal
  02/13/2026 05 AM PST            2.79              4         0              Normal
  02/13/2026 06 AM PST            2.79              4         0              Normal
  02/13/2026 07 AM PST            2.79              4         0              Normal
  02/13/2026 08 AM PST            2.79              4         0              Normal
  02/13/2026 09 AM PST            2.79              4         0              Normal
  02/13/2026 10 AM PST            2.79              4         0              Normal
  02/13/2026 11 AM PST            2.79              4         0              Normal
  02/13/2026 12 PM PST            2.79              4         0              Normal
  02/13/2026 01 PM PST            2.79              4         0              Normal
  02/13/2026 02 PM PST            2.79              4         0              Normal
  02/13/2026 03 PM PST            2.79              4         0              Normal
  02/13/2026 04 PM PST            2.79              4         0              Normal
  02/13/2026 05 PM PST            2.79              4         0              Normal
  02/13/2026 06 PM PST            2.79              4         0              Normal
  02/13/2026 07 PM PST            2.79              4         0              Normal
  02/13/2026 08 PM PST            2.79              4         0              Normal
  02/13/2026 09 PM PST            2.79              4         0              Normal
  02/13/2026 10 PM PST            2.79              4         0              Normal
  02/13/2026 11 PM PST            2.79              4         0              Normal
  02/14/2026 12 AM PST            2.79              4         0              Normal
  02/14/2026 01 AM PST            2.79              4         0              Normal
  02/14/2026 02 AM PST            2.79              4         0              Normal
  02/14/2026 03 AM PST            2.79              4         0              Normal
  02/14/2026 04 AM PST            2.79              4         0              Normal
  02/14/2026 05 AM PST            2.79              4         0              Normal
  02/14/2026 06 AM PST            2.79              4         0              Normal
  02/14/2026 07 AM PST            2.78              3         -              Normal
  02/14/2026 08 AM PST            2.78              3         0              Normal
  02/14/2026 09 AM PST            2.78              3         0              Normal
  02/14/2026 10 AM PST            2.78              3         0              Normal
  02/14/2026 11 AM PST            2.78              3         0              Normal
  02/14/2026 12 PM PST            2.78              3         0              Normal
  02/14/2026 01 PM PST            2.78              3         0              Normal
  02/14/2026 02 PM PST            2.78              3         0              Normal
  02/14/2026 03 PM PST            2.78              3         0              Normal
  02/14/2026 04 PM PST            2.78              3         0              Normal
  02/14/2026 05 PM PST            2.78              3         0              Normal
  02/14/2026 06 PM PST            2.78              3         0              Normal
  02/14/2026 07 PM PST            2.78              3         0              Normal
  02/14/2026 08 PM PST            2.78              3         0              Normal
  02/14/2026 09 PM PST            2.78              3         0              Normal
  02/14/2026 10 PM PST            2.78              3         0              Normal
  02/14/2026 11 PM PST            2.78              3         0              Normal
  02/15/2026 12 AM PST            2.78              3         0              Normal
  02/15/2026 01 AM PST            2.78              3         0              Normal
  02/15/2026 02 AM PST            2.78              3         0              Normal
  02/15/2026 03 AM PST            2.78              3         0              Normal
  02/15/2026 04 AM PST            2.78              3         0              Normal
  02/15/2026 05 AM PST            2.78              3         0              Normal
  02/15/2026 06 AM PST            2.78              3         0              Normal
  02/15/2026 07 AM PST            2.78              3         0              Normal
  02/15/2026 08 AM PST            2.79              4         +              Normal
  02/15/2026 09 AM PST            2.80              4         +              Normal
  02/15/2026 10 AM PST            2.83              5         +              Normal
  02/15/2026 11 AM PST            2.89              6         +              Normal
  02/15/2026 12 PM PST            2.97              9         +              Normal
  02/15/2026 01 PM PST            3.03             11         +              Normal
  02/15/2026 02 PM PST            3.06             12         +              Normal
  02/15/2026 03 PM PST            3.09             13         +              Normal
  02/15/2026 04 PM PST            3.12             14         +              Normal
  02/15/2026 05 PM PST            3.16             16         +              Normal
  02/15/2026 06 PM PST            3.22             19         +              Normal
  02/15/2026 07 PM PST            3.29             21         +              Normal
  02/15/2026 08 PM PST            3.33             22         +              Normal
  02/15/2026 09 PM PST            3.37             23         +              Normal
  02/15/2026 10 PM PST            3.41             24         +              Normal
  02/15/2026 11 PM PST            3.47             26         +              Normal
  02/16/2026 12 AM PST            3.52             29         +              Normal
  02/16/2026 01 AM PST            3.56             31         +              Normal
  02/16/2026 02 AM PST            3.58             32         +              Normal
  02/16/2026 03 AM PST            3.59             33         +              Normal
  02/16/2026 04 AM PST            3.60             33         +              Normal
  02/16/2026 05 AM PST            3.60             33         0              Normal
  02/16/2026 06 AM PST            3.61             34         +              Normal
  02/16/2026 07 AM PST            3.61             34         0              Normal
  02/16/2026 08 AM PST            3.61             34         0              Normal
  02/16/2026 09 AM PST            3.61             34         0              Normal
  02/16/2026 10 AM PST            3.62             35         +              Normal
  02/16/2026 11 AM PST            3.62             35         0              Normal
  02/16/2026 12 PM PST            3.63             35         +              Normal
  02/16/2026 01 PM PST            3.64             36         +              Normal
  02/16/2026 02 PM PST            3.64             36         0              Normal
  02/16/2026 03 PM PST            3.64             36         0              Normal
  02/16/2026 04 PM PST            3.62             35         -              Normal
  02/16/2026 05 PM PST            3.58             32         -              Normal
  02/16/2026 06 PM PST            3.52             29         -              Normal
  02/16/2026 07 PM PST            3.47             26         -              Normal
  02/16/2026 08 PM PST            3.41             24         -              Normal
  02/16/2026 09 PM PST            3.38             23         -              Normal
  02/16/2026 10 PM PST            3.35             23         -              Normal
  02/16/2026 11 PM PST            3.32             22         -              Normal
  02/17/2026 12 AM PST            3.30             21         -              Normal
  02/17/2026 01 AM PST            3.28             21         -              Normal
  02/17/2026 02 AM PST            3.27             20         -              Normal
  02/17/2026 03 AM PST            3.26             20         -              Normal
  02/17/2026 04 AM PST            3.25             20         -              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.