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 FeetForecast Type: Official Location
Location: Santa Cruz County in CaliforniaBulletin Group: Central CoastRiver Group: Salinas/Pajaro
Issuance Time: Mar 23 2026 at 1:12 PM PDTNext Issuance: Mar 24 2026 at 9:00 AM PDT
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:  03/23/2026 at 01:12 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  03/18/2026 at 02:00 PM PDT
# Maximum Observed Stage:                       4.13 Feet
# Maximum Observed Flow:                        76 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/23/2026 at 02:00 PM PDT
# Maximum Forecast Stage:                       4.02 Feet
# Maximum Forecast Flow:                        66 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  03/18/2026 01 PM PDT            4.12             75                        Normal
  03/18/2026 02 PM PDT            4.13             76         +              Normal
  03/18/2026 03 PM PDT            4.12             75         -              Normal
  03/18/2026 04 PM PDT            4.12             75         0              Normal
  03/18/2026 05 PM PDT            4.11             74         -              Normal
  03/18/2026 06 PM PDT            4.11             74         0              Normal
  03/18/2026 07 PM PDT            4.11             74         0              Normal
  03/18/2026 08 PM PDT            4.11             74         0              Normal
  03/18/2026 09 PM PDT            4.11             74         0              Normal
  03/18/2026 10 PM PDT            4.11             74         0              Normal
  03/18/2026 11 PM PDT            4.11             74         0              Normal
  03/19/2026 12 AM PDT            4.11             74         0              Normal
  03/19/2026 01 AM PDT            4.11             74         0              Normal
  03/19/2026 02 AM PDT            4.11             74         0              Normal
  03/19/2026 03 AM PDT            4.10             73         -              Normal
  03/19/2026 04 AM PDT            4.10             73         0              Normal
  03/19/2026 05 AM PDT            4.10             73         0              Normal
  03/19/2026 06 AM PDT            4.10             73         0              Normal
  03/19/2026 07 AM PDT            4.10             73         0              Normal
  03/19/2026 08 AM PDT            4.10             73         0              Normal
  03/19/2026 09 AM PDT            4.09             72         -              Normal
  03/19/2026 10 AM PDT            4.09             72         0              Normal
  03/19/2026 11 AM PDT            4.09             72         0              Normal
  03/19/2026 12 PM PDT            4.08             71         -              Normal
  03/19/2026 01 PM PDT            4.09             72         +              Normal
  03/19/2026 02 PM PDT            4.08             71         -              Normal
  03/19/2026 03 PM PDT            4.08             71         0              Normal
  03/19/2026 04 PM PDT            4.06             70         -              Normal
  03/19/2026 05 PM PDT            4.06             70         0              Normal
  03/19/2026 06 PM PDT            4.08             71         +              Normal
  03/19/2026 07 PM PDT            4.08             71         0              Normal
  03/19/2026 08 PM PDT            4.07             71         -              Normal
  03/19/2026 09 PM PDT            4.07             71         0              Normal
  03/19/2026 10 PM PDT            4.07             71         0              Normal
  03/19/2026 11 PM PDT            4.08             71         +              Normal
  03/20/2026 12 AM PDT            4.07             71         -              Normal
  03/20/2026 01 AM PDT            4.07             71         0              Normal
  03/20/2026 02 AM PDT            4.07             71         0              Normal
  03/20/2026 03 AM PDT            4.07             71         0              Normal
  03/20/2026 04 AM PDT            4.06             70         -              Normal
  03/20/2026 05 AM PDT            4.06             70         0              Normal
  03/20/2026 06 AM PDT            4.06             70         0              Normal
  03/20/2026 07 AM PDT            4.06             70         0              Normal
  03/20/2026 08 AM PDT            4.06             70         0              Normal
  03/20/2026 09 AM PDT            4.06             70         0              Normal
  03/20/2026 10 AM PDT            4.05             69         -              Normal
  03/20/2026 11 AM PDT            4.06             70         +              Normal
  03/20/2026 12 PM PDT            4.06             70         0              Normal
  03/20/2026 01 PM PDT            4.06             70         0              Normal
  03/20/2026 02 PM PDT            4.06             70         0              Normal
  03/20/2026 03 PM PDT            4.09             72         +              Normal
  03/20/2026 04 PM PDT            4.08             71         -              Normal
  03/20/2026 05 PM PDT            4.08             71         0              Normal
  03/20/2026 06 PM PDT            4.08             71         0              Normal
  03/20/2026 07 PM PDT            4.08             71         0              Normal
  03/20/2026 08 PM PDT            4.08             71         0              Normal
  03/20/2026 09 PM PDT            4.08             71         0              Normal
  03/20/2026 10 PM PDT            4.08             71         0              Normal
  03/20/2026 11 PM PDT            4.08             71         0              Normal
  03/21/2026 12 AM PDT            4.08             71         0              Normal
  03/21/2026 01 AM PDT            4.07             71         -              Normal
  03/21/2026 02 AM PDT            4.07             71         0              Normal
  03/21/2026 03 AM PDT            4.07             71         0              Normal
  03/21/2026 04 AM PDT            4.07             71         0              Normal
  03/21/2026 05 AM PDT            4.07             71         0              Normal
  03/21/2026 06 AM PDT            4.06             70         -              Normal
  03/21/2026 07 AM PDT            4.07             71         +              Normal
  03/21/2026 08 AM PDT            4.07             71         0              Normal
  03/21/2026 09 AM PDT            4.06             70         -              Normal
  03/21/2026 10 AM PDT            4.06             70         0              Normal
  03/21/2026 11 AM PDT            4.06             70         0              Normal
  03/21/2026 12 PM PDT            4.06             70         0              Normal
  03/21/2026 01 PM PDT            4.06             70         0              Normal
  03/21/2026 02 PM PDT            4.06             70         0              Normal
  03/21/2026 03 PM PDT            4.06             70         0              Normal
  03/21/2026 04 PM PDT            4.07             71         +              Normal
  03/21/2026 05 PM PDT            4.07             71         0              Normal
  03/21/2026 06 PM PDT            4.06             70         -              Normal
  03/21/2026 07 PM PDT            4.06             70         0              Normal
  03/21/2026 08 PM PDT            4.06             70         0              Normal
  03/21/2026 09 PM PDT            4.07             71         +              Normal
  03/21/2026 10 PM PDT            4.07             71         0              Normal
  03/21/2026 11 PM PDT            4.07             71         0              Normal
  03/22/2026 12 AM PDT            4.06             70         -              Normal
  03/22/2026 01 AM PDT            4.06             70         0              Normal
  03/22/2026 02 AM PDT            4.05             69         -              Normal
  03/22/2026 03 AM PDT            4.05             69         0              Normal
  03/22/2026 04 AM PDT            4.05             69         0              Normal
  03/22/2026 05 AM PDT            4.04             68         -              Normal
  03/22/2026 06 AM PDT            4.05             69         +              Normal
  03/22/2026 07 AM PDT            4.04             68         -              Normal
  03/22/2026 08 AM PDT            4.03             67         -              Normal
  03/22/2026 09 AM PDT            4.04             68         +              Normal
  03/22/2026 10 AM PDT            4.04             68         0              Normal
  03/22/2026 11 AM PDT            4.04             68         0              Normal
  03/22/2026 12 PM PDT            4.04             68         0              Normal
  03/22/2026 01 PM PDT            4.04             68         0              Normal
  03/22/2026 02 PM PDT            4.04             68         0              Normal
  03/22/2026 03 PM PDT            4.04             68         0              Normal
  03/22/2026 04 PM PDT            4.04             68         0              Normal
  03/22/2026 05 PM PDT            4.03             67         -              Normal
  03/22/2026 06 PM PDT            4.03             67         0              Normal
  03/22/2026 07 PM PDT            4.03             67         0              Normal
  03/22/2026 08 PM PDT            4.03             67         0              Normal
  03/22/2026 09 PM PDT            4.03             67         0              Normal
  03/22/2026 10 PM PDT            4.04             68         +              Normal
  03/22/2026 11 PM PDT            4.03             67         -              Normal
  03/23/2026 12 AM PDT            4.03             67         0              Normal
  03/23/2026 01 AM PDT            4.03             67         0              Normal
  03/23/2026 02 AM PDT            4.03             67         0              Normal
  03/23/2026 03 AM PDT            4.02             66         -              Normal
  03/23/2026 04 AM PDT            4.03             67         +              Normal
  03/23/2026 05 AM PDT            4.02             66         -              Normal
  03/23/2026 06 AM PDT            4.02             66         0              Normal
  03/23/2026 07 AM PDT            4.02             66         0              Normal
  03/23/2026 08 AM PDT            4.02             66         0              Normal
  03/23/2026 09 AM PDT            4.02             66         0              Normal
  03/23/2026 10 AM PDT            4.01             66         -              Normal
  03/23/2026 11 AM PDT            4.02             66         +              Normal
  03/23/2026 12 PM PDT            4.02             66         0              Normal
  03/23/2026 01 PM PDT            4.02             66         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/23/2026 02 PM PDT            4.02             66                        Normal
  03/23/2026 03 PM PDT            4.02             66         0              Normal
  03/23/2026 04 PM PDT            4.01             66         -              Normal
  03/23/2026 05 PM PDT            4.01             66         0              Normal
  03/23/2026 06 PM PDT            4.01             66         0              Normal
  03/23/2026 07 PM PDT            4.01             66         0              Normal
  03/23/2026 08 PM PDT            4.01             66         0              Normal
  03/23/2026 09 PM PDT            4.01             66         0              Normal
  03/23/2026 10 PM PDT            4.01             66         0              Normal
  03/23/2026 11 PM PDT            4.01             66         0              Normal
  03/24/2026 12 AM PDT            4.01             66         0              Normal
  03/24/2026 01 AM PDT            4.00             65         -              Normal
  03/24/2026 02 AM PDT            4.00             65         0              Normal
  03/24/2026 03 AM PDT            4.00             65         0              Normal
  03/24/2026 04 AM PDT            4.00             65         0              Normal
  03/24/2026 05 AM PDT            4.00             65         0              Normal
  03/24/2026 06 AM PDT            4.00             65         0              Normal
  03/24/2026 07 AM PDT            4.00             65         0              Normal
  03/24/2026 08 AM PDT            4.00             65         0              Normal
  03/24/2026 09 AM PDT            4.00             65         0              Normal
  03/24/2026 10 AM PDT            4.00             65         0              Normal
  03/24/2026 11 AM PDT            3.99             64         -              Normal
  03/24/2026 12 PM PDT            3.99             64         0              Normal
  03/24/2026 01 PM PDT            3.99             64         0              Normal
  03/24/2026 02 PM PDT            3.99             64         0              Normal
  03/24/2026 03 PM PDT            3.99             64         0              Normal
  03/24/2026 04 PM PDT            3.99             64         0              Normal
  03/24/2026 05 PM PDT            3.99             64         0              Normal
  03/24/2026 06 PM PDT            3.99             64         0              Normal
  03/24/2026 07 PM PDT            3.99             64         0              Normal
  03/24/2026 08 PM PDT            3.98             63         -              Normal
  03/24/2026 09 PM PDT            3.98             63         0              Normal
  03/24/2026 10 PM PDT            3.98             63         0              Normal
  03/24/2026 11 PM PDT            3.98             63         0              Normal
  03/25/2026 12 AM PDT            3.98             63         0              Normal
  03/25/2026 01 AM PDT            3.98             63         0              Normal
  03/25/2026 02 AM PDT            3.98             63         0              Normal
  03/25/2026 03 AM PDT            3.98             63         0              Normal
  03/25/2026 04 AM PDT            3.98             63         0              Normal
  03/25/2026 05 AM PDT            3.98             63         0              Normal
  03/25/2026 06 AM PDT            3.97             62         -              Normal
  03/25/2026 07 AM PDT            3.97             62         0              Normal
  03/25/2026 08 AM PDT            3.97             62         0              Normal
  03/25/2026 09 AM PDT            3.97             62         0              Normal
  03/25/2026 10 AM PDT            3.97             62         0              Normal
  03/25/2026 11 AM PDT            3.97             62         0              Normal
  03/25/2026 12 PM PDT            3.97             62         0              Normal
  03/25/2026 01 PM PDT            3.97             62         0              Normal
  03/25/2026 02 PM PDT            3.97             62         0              Normal
  03/25/2026 03 PM PDT            3.96             62         -              Normal
  03/25/2026 04 PM PDT            3.96             62         0              Normal
  03/25/2026 05 PM PDT            3.96             62         0              Normal
  03/25/2026 06 PM PDT            3.96             62         0              Normal
  03/25/2026 07 PM PDT            3.96             62         0              Normal
  03/25/2026 08 PM PDT            3.96             62         0              Normal
  03/25/2026 09 PM PDT            3.96             62         0              Normal
  03/25/2026 10 PM PDT            3.96             62         0              Normal
  03/25/2026 11 PM PDT            3.96             62         0              Normal
  03/26/2026 12 AM PDT            3.96             62         0              Normal
  03/26/2026 01 AM PDT            3.96             62         0              Normal
  03/26/2026 02 AM PDT            3.95             61         -              Normal
  03/26/2026 03 AM PDT            3.95             61         0              Normal
  03/26/2026 04 AM PDT            3.95             61         0              Normal
  03/26/2026 05 AM PDT            3.95             61         0              Normal
  03/26/2026 06 AM PDT            3.95             61         0              Normal
  03/26/2026 07 AM PDT            3.95             61         0              Normal
  03/26/2026 08 AM PDT            3.95             61         0              Normal
  03/26/2026 09 AM PDT            3.95             61         0              Normal
  03/26/2026 10 AM PDT            3.95             61         0              Normal
  03/26/2026 11 AM PDT            3.94             60         -              Normal
  03/26/2026 12 PM PDT            3.94             60         0              Normal
  03/26/2026 01 PM PDT            3.94             60         0              Normal
  03/26/2026 02 PM PDT            3.94             60         0              Normal
  03/26/2026 03 PM PDT            3.94             60         0              Normal
  03/26/2026 04 PM PDT            3.94             60         0              Normal
  03/26/2026 05 PM PDT            3.94             60         0              Normal
  03/26/2026 06 PM PDT            3.94             60         0              Normal
  03/26/2026 07 PM PDT            3.94             60         0              Normal
  03/26/2026 08 PM PDT            3.94             60         0              Normal
  03/26/2026 09 PM PDT            3.94             60         0              Normal
  03/26/2026 10 PM PDT            3.93             59         -              Normal
  03/26/2026 11 PM PDT            3.93             59         0              Normal
  03/27/2026 12 AM PDT            3.93             59         0              Normal
  03/27/2026 01 AM PDT            3.93             59         0              Normal
  03/27/2026 02 AM PDT            3.93             59         0              Normal
  03/27/2026 03 AM PDT            3.93             59         0              Normal
  03/27/2026 04 AM PDT            3.93             59         0              Normal
  03/27/2026 05 AM PDT            3.93             59         0              Normal
  03/27/2026 06 AM PDT            3.93             59         0              Normal
  03/27/2026 07 AM PDT            3.93             59         0              Normal
  03/27/2026 08 AM PDT            3.92             58         -              Normal
  03/27/2026 09 AM PDT            3.92             58         0              Normal
  03/27/2026 10 AM PDT            3.92             58         0              Normal
  03/27/2026 11 AM PDT            3.92             58         0              Normal
  03/27/2026 12 PM PDT            3.92             58         0              Normal
  03/27/2026 01 PM PDT            3.92             58         0              Normal
  03/27/2026 02 PM PDT            3.92             58         0              Normal
  03/27/2026 03 PM PDT            3.92             58         0              Normal
  03/27/2026 04 PM PDT            3.92             58         0              Normal
  03/27/2026 05 PM PDT            3.92             58         0              Normal
  03/27/2026 06 PM PDT            3.92             58         0              Normal
  03/27/2026 07 PM PDT            3.92             58         0              Normal
  03/27/2026 08 PM PDT            3.91             58         -              Normal
  03/27/2026 09 PM PDT            3.91             58         0              Normal
  03/27/2026 10 PM PDT            3.91             58         0              Normal
  03/27/2026 11 PM PDT            3.91             58         0              Normal
  03/28/2026 12 AM PDT            3.91             58         0              Normal
  03/28/2026 01 AM PDT            3.91             58         0              Normal
  03/28/2026 02 AM PDT            3.91             58         0              Normal
  03/28/2026 03 AM PDT            3.91             58         0              Normal
  03/28/2026 04 AM PDT            3.91             58         0              Normal
  03/28/2026 05 AM PDT            3.90             57         -              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.