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 RIVER - BIG TREES (BTEC1)
Latitude: 37.04º NLongitude: 122.07º WElevation: 227 Feet
Location: Santa Cruz County in CaliforniaBulletin Group: Central CoastRiver Group: Salinas/Pajaro
Issuance Time: Jan 22 2026 at 1:23 PM PSTNext Issuance: Jan 23 2026 at 9:00 AM PST
Action/Monitor: 14.0 FeetMinor Flood: 16.5 FeetModerate Flood: 19.5 FeetMajor Flood: 21.76 Feet


# Tabular Observed and Forecast Hydrograph Information
#
# Location: San Lorenzo River - Big Trees (BTEC1)
#
# File Generation Time:  01/22/2026 at 01:23 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  01/17/2026 at 04:00 PM PST
# Maximum Observed Stage:                       4.37 Feet
# Maximum Observed Flow:                        103 cfs
#
# Earliest Date & Time of Maximum Forecast:     01/22/2026 at 02:00 PM PST
# Maximum Forecast Stage:                       4.16 Feet
# Maximum Forecast Flow:                        81 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  01/17/2026 01 PM PST            4.37            103                        Normal
  01/17/2026 02 PM PST            4.37            103         0              Normal
  01/17/2026 03 PM PST            4.37            103         0              Normal
  01/17/2026 04 PM PST            4.37            103         0              Normal
  01/17/2026 05 PM PST            4.36            102         -              Normal
  01/17/2026 06 PM PST            4.36            102         0              Normal
  01/17/2026 07 PM PST            4.36            102         0              Normal
  01/17/2026 08 PM PST            4.36            102         0              Normal
  01/17/2026 09 PM PST            4.36            102         0              Normal
  01/17/2026 10 PM PST            4.36            102         0              Normal
  01/17/2026 11 PM PST            4.36            102         0              Normal
  01/18/2026 12 AM PST            4.35            101         -              Normal
  01/18/2026 01 AM PST            4.35            101         0              Normal
  01/18/2026 02 AM PST            4.35            101         0              Normal
  01/18/2026 03 AM PST            4.35            101         0              Normal
  01/18/2026 04 AM PST            4.34            100         -              Normal
  01/18/2026 05 AM PST            4.34            100         0              Normal
  01/18/2026 06 AM PST            4.34            100         0              Normal
  01/18/2026 07 AM PST            4.33             99         -              Normal
  01/18/2026 08 AM PST            4.33             99         0              Normal
  01/18/2026 09 AM PST            4.33             99         0              Normal
  01/18/2026 10 AM PST            4.33             99         0              Normal
  01/18/2026 11 AM PST            4.32             98         -              Normal
  01/18/2026 12 PM PST            4.32             98         0              Normal
  01/18/2026 01 PM PST            4.32             98         0              Normal
  01/18/2026 02 PM PST            4.32             98         0              Normal
  01/18/2026 03 PM PST            4.32             98         0              Normal
  01/18/2026 04 PM PST            4.32             98         0              Normal
  01/18/2026 05 PM PST            4.32             98         0              Normal
  01/18/2026 06 PM PST            4.32             98         0              Normal
  01/18/2026 07 PM PST            4.32             98         0              Normal
  01/18/2026 08 PM PST            4.32             98         0              Normal
  01/18/2026 09 PM PST            4.31             96         -              Normal
  01/18/2026 10 PM PST            4.31             96         0              Normal
  01/18/2026 11 PM PST            4.31             96         0              Normal
  01/19/2026 12 AM PST            4.31             96         0              Normal
  01/19/2026 01 AM PST            4.30             95         -              Normal
  01/19/2026 02 AM PST            4.30             95         0              Normal
  01/19/2026 03 AM PST            4.30             95         0              Normal
  01/19/2026 04 AM PST            4.30             95         0              Normal
  01/19/2026 05 AM PST            4.30             95         0              Normal
  01/19/2026 06 AM PST            4.30             95         0              Normal
  01/19/2026 07 AM PST            4.30             95         0              Normal
  01/19/2026 08 AM PST            4.28             93         -              Normal
  01/19/2026 09 AM PST            4.29             94         +              Normal
  01/19/2026 10 AM PST            4.28             93         -              Normal
  01/19/2026 11 AM PST            4.29             94         +              Normal
  01/19/2026 12 PM PST            4.27             92         -              Normal
  01/19/2026 01 PM PST            4.28             93         +              Normal
  01/19/2026 02 PM PST            4.27             92         -              Normal
  01/19/2026 03 PM PST            4.28             93         +              Normal
  01/19/2026 04 PM PST            4.28             93         0              Normal
  01/19/2026 05 PM PST            4.28             93         0              Normal
  01/19/2026 06 PM PST            4.27             92         -              Normal
  01/19/2026 07 PM PST            4.28             93         +              Normal
  01/19/2026 08 PM PST            4.27             92         -              Normal
  01/19/2026 09 PM PST            4.27             92         0              Normal
  01/19/2026 10 PM PST            4.27             92         0              Normal
  01/19/2026 11 PM PST            4.27             92         0              Normal
  01/20/2026 12 AM PST            4.27             92         0              Normal
  01/20/2026 01 AM PST            4.26             91         -              Normal
  01/20/2026 02 AM PST            4.26             91         0              Normal
  01/20/2026 03 AM PST            4.26             91         0              Normal
  01/20/2026 04 AM PST            4.25             90         -              Normal
  01/20/2026 05 AM PST            4.26             91         +              Normal
  01/20/2026 06 AM PST            4.25             90         -              Normal
  01/20/2026 07 AM PST            4.24             89         -              Normal
  01/20/2026 08 AM PST            4.25             90         +              Normal
  01/20/2026 09 AM PST            4.26             91         +              Normal
  01/20/2026 10 AM PST            4.24             89         -              Normal
  01/20/2026 11 AM PST            4.24             89         0              Normal
  01/20/2026 12 PM PST            4.24             89         0              Normal
  01/20/2026 01 PM PST            4.24             89         0              Normal
  01/20/2026 02 PM PST            4.24             89         0              Normal
  01/20/2026 03 PM PST            4.24             89         0              Normal
  01/20/2026 04 PM PST            4.24             89         0              Normal
  01/20/2026 05 PM PST            4.23             88         -              Normal
  01/20/2026 06 PM PST            4.23             88         0              Normal
  01/20/2026 07 PM PST            4.23             88         0              Normal
  01/20/2026 08 PM PST            4.23             88         0              Normal
  01/20/2026 09 PM PST            4.23             88         0              Normal
  01/20/2026 10 PM PST            4.23             88         0              Normal
  01/20/2026 11 PM PST            4.23             88         0              Normal
  01/21/2026 12 AM PST            4.22             87         -              Normal
  01/21/2026 01 AM PST            4.22             87         0              Normal
  01/21/2026 02 AM PST            4.22             87         0              Normal
  01/21/2026 03 AM PST            4.22             87         0              Normal
  01/21/2026 04 AM PST            4.22             87         0              Normal
  01/21/2026 05 AM PST            4.22             87         0              Normal
  01/21/2026 06 AM PST            4.22             87         0              Normal
  01/21/2026 07 AM PST            4.21             86         -              Normal
  01/21/2026 08 AM PST            4.21             86         0              Normal
  01/21/2026 09 AM PST            4.21             86         0              Normal
  01/21/2026 10 AM PST            4.20             85         -              Normal
  01/21/2026 11 AM PST            4.21             86         +              Normal
  01/21/2026 12 PM PST            4.20             85         -              Normal
  01/21/2026 01 PM PST            4.18             83         -              Normal
  01/21/2026 02 PM PST            4.20             85         +              Normal
  01/21/2026 03 PM PST            4.20             85         0              Normal
  01/21/2026 04 PM PST            4.20             85         0              Normal
  01/21/2026 05 PM PST            4.19             84         -              Normal
  01/21/2026 06 PM PST            4.20             85         +              Normal
  01/21/2026 07 PM PST            4.20             85         0              Normal
  01/21/2026 08 PM PST            4.19             84         -              Normal
  01/21/2026 09 PM PST            4.19             84         0              Normal
  01/21/2026 10 PM PST            4.19             84         0              Normal
  01/21/2026 11 PM PST            4.19             84         0              Normal
  01/22/2026 12 AM PST            4.19             84         0              Normal
  01/22/2026 01 AM PST            4.19             84         0              Normal
  01/22/2026 02 AM PST            4.19             84         0              Normal
  01/22/2026 03 AM PST            4.19             84         0              Normal
  01/22/2026 04 AM PST            4.19             84         0              Normal
  01/22/2026 05 AM PST            4.18             83         -              Normal
  01/22/2026 06 AM PST            4.18             83         0              Normal
  01/22/2026 07 AM PST            4.19             84         +              Normal
  01/22/2026 08 AM PST            4.18             83         -              Normal
  01/22/2026 09 AM PST            4.18             83         0              Normal
  01/22/2026 10 AM PST            4.18             83         0              Normal
  01/22/2026 11 AM PST            4.17             82         -              Normal
  01/22/2026 12 PM PST            4.16             81         -              Normal
  01/22/2026 01 PM PST            4.16             81         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  01/22/2026 02 PM PST            4.16             81                        Normal
  01/22/2026 03 PM PST            4.16             81         0              Normal
  01/22/2026 04 PM PST            4.15             80         -              Normal
  01/22/2026 05 PM PST            4.15             80         0              Normal
  01/22/2026 06 PM PST            4.15             80         0              Normal
  01/22/2026 07 PM PST            4.15             80         0              Normal
  01/22/2026 08 PM PST            4.14             79         -              Normal
  01/22/2026 09 PM PST            4.14             79         0              Normal
  01/22/2026 10 PM PST            4.14             79         0              Normal
  01/22/2026 11 PM PST            4.14             79         0              Normal
  01/23/2026 12 AM PST            4.14             79         0              Normal
  01/23/2026 01 AM PST            4.14             79         0              Normal
  01/23/2026 02 AM PST            4.13             78         -              Normal
  01/23/2026 03 AM PST            4.13             78         0              Normal
  01/23/2026 04 AM PST            4.13             78         0              Normal
  01/23/2026 05 AM PST            4.13             78         0              Normal
  01/23/2026 06 AM PST            4.13             78         0              Normal
  01/23/2026 07 AM PST            4.13             78         0              Normal
  01/23/2026 08 AM PST            4.12             77         -              Normal
  01/23/2026 09 AM PST            4.12             77         0              Normal
  01/23/2026 10 AM PST            4.12             77         0              Normal
  01/23/2026 11 AM PST            4.12             77         0              Normal
  01/23/2026 12 PM PST            4.12             77         0              Normal
  01/23/2026 01 PM PST            4.12             77         0              Normal
  01/23/2026 02 PM PST            4.12             77         0              Normal
  01/23/2026 03 PM PST            4.11             76         -              Normal
  01/23/2026 04 PM PST            4.11             76         0              Normal
  01/23/2026 05 PM PST            4.11             76         0              Normal
  01/23/2026 06 PM PST            4.11             76         0              Normal
  01/23/2026 07 PM PST            4.11             76         0              Normal
  01/23/2026 08 PM PST            4.11             76         0              Normal
  01/23/2026 09 PM PST            4.10             75         -              Normal
  01/23/2026 10 PM PST            4.10             75         0              Normal
  01/23/2026 11 PM PST            4.10             75         0              Normal
  01/24/2026 12 AM PST            4.10             75         0              Normal
  01/24/2026 01 AM PST            4.10             75         0              Normal
  01/24/2026 02 AM PST            4.10             75         0              Normal
  01/24/2026 03 AM PST            4.09             74         -              Normal
  01/24/2026 04 AM PST            4.09             74         0              Normal
  01/24/2026 05 AM PST            4.09             74         0              Normal
  01/24/2026 06 AM PST            4.09             74         0              Normal
  01/24/2026 07 AM PST            4.09             74         0              Normal
  01/24/2026 08 AM PST            4.09             74         0              Normal
  01/24/2026 09 AM PST            4.08             73         -              Normal
  01/24/2026 10 AM PST            4.08             73         0              Normal
  01/24/2026 11 AM PST            4.08             73         0              Normal
  01/24/2026 12 PM PST            4.08             73         0              Normal
  01/24/2026 01 PM PST            4.08             73         0              Normal
  01/24/2026 02 PM PST            4.08             73         0              Normal
  01/24/2026 03 PM PST            4.08             73         0              Normal
  01/24/2026 04 PM PST            4.08             73         0              Normal
  01/24/2026 05 PM PST            4.07             72         -              Normal
  01/24/2026 06 PM PST            4.07             72         0              Normal
  01/24/2026 07 PM PST            4.07             72         0              Normal
  01/24/2026 08 PM PST            4.07             72         0              Normal
  01/24/2026 09 PM PST            4.07             72         0              Normal
  01/24/2026 10 PM PST            4.07             72         0              Normal
  01/24/2026 11 PM PST            4.06             71         -              Normal
  01/25/2026 12 AM PST            4.06             71         0              Normal
  01/25/2026 01 AM PST            4.06             71         0              Normal
  01/25/2026 02 AM PST            4.06             71         0              Normal
  01/25/2026 03 AM PST            4.06             71         0              Normal
  01/25/2026 04 AM PST            4.06             71         0              Normal
  01/25/2026 05 AM PST            4.05             71         -              Normal
  01/25/2026 06 AM PST            4.05             71         0              Normal
  01/25/2026 07 AM PST            4.05             71         0              Normal
  01/25/2026 08 AM PST            4.05             71         0              Normal
  01/25/2026 09 AM PST            4.05             71         0              Normal
  01/25/2026 10 AM PST            4.05             71         0              Normal
  01/25/2026 11 AM PST            4.05             71         0              Normal
  01/25/2026 12 PM PST            4.05             71         0              Normal
  01/25/2026 01 PM PST            4.04             70         -              Normal
  01/25/2026 02 PM PST            4.04             70         0              Normal
  01/25/2026 03 PM PST            4.04             70         0              Normal
  01/25/2026 04 PM PST            4.04             70         0              Normal
  01/25/2026 05 PM PST            4.04             70         0              Normal
  01/25/2026 06 PM PST            4.04             70         0              Normal
  01/25/2026 07 PM PST            4.04             70         0              Normal
  01/25/2026 08 PM PST            4.03             69         -              Normal
  01/25/2026 09 PM PST            4.03             69         0              Normal
  01/25/2026 10 PM PST            4.03             69         0              Normal
  01/25/2026 11 PM PST            4.03             69         0              Normal
  01/26/2026 12 AM PST            4.03             69         0              Normal
  01/26/2026 01 AM PST            4.03             69         0              Normal
  01/26/2026 02 AM PST            4.03             69         0              Normal
  01/26/2026 03 AM PST            4.03             69         0              Normal
  01/26/2026 04 AM PST            4.02             68         -              Normal
  01/26/2026 05 AM PST            4.02             68         0              Normal
  01/26/2026 06 AM PST            4.02             68         0              Normal
  01/26/2026 07 AM PST            4.02             68         0              Normal
  01/26/2026 08 AM PST            4.02             68         0              Normal
  01/26/2026 09 AM PST            4.02             68         0              Normal
  01/26/2026 10 AM PST            4.02             68         0              Normal
  01/26/2026 11 AM PST            4.01             67         -              Normal
  01/26/2026 12 PM PST            4.01             67         0              Normal
  01/26/2026 01 PM PST            4.01             67         0              Normal
  01/26/2026 02 PM PST            4.01             67         0              Normal
  01/26/2026 03 PM PST            4.01             67         0              Normal
  01/26/2026 04 PM PST            4.01             67         0              Normal
  01/26/2026 05 PM PST            4.01             67         0              Normal
  01/26/2026 06 PM PST            4.00             66         -              Normal
  01/26/2026 07 PM PST            4.00             66         0              Normal
  01/26/2026 08 PM PST            4.00             66         0              Normal
  01/26/2026 09 PM PST            4.00             66         0              Normal
  01/26/2026 10 PM PST            4.00             66         0              Normal
  01/26/2026 11 PM PST            4.00             66         0              Normal
  01/27/2026 12 AM PST            4.00             66         0              Normal
  01/27/2026 01 AM PST            4.00             66         0              Normal
  01/27/2026 02 AM PST            4.00             66         0              Normal
  01/27/2026 03 AM PST            3.99             65         -              Normal
  01/27/2026 04 AM PST            3.99             65         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.