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: Apr 13 2026 at 1:24 PM PDTNext Issuance: Apr 14 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:  04/13/2026 at 01:24 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/12/2026 at 02:00 AM PDT
# Maximum Observed Stage:                       5.24 Feet
# Maximum Observed Flow:                        238 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/13/2026 at 02:00 PM PDT
# Maximum Forecast Stage:                       4.34 Feet
# Maximum Forecast Flow:                        98 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/08/2026 01 PM PDT            3.89             53                        Normal
  04/08/2026 02 PM PDT            3.88             52         -              Normal
  04/08/2026 03 PM PDT            3.88             52         0              Normal
  04/08/2026 04 PM PDT            3.88             52         0              Normal
  04/08/2026 05 PM PDT            3.88             52         0              Normal
  04/08/2026 06 PM PDT            3.88             52         0              Normal
  04/08/2026 07 PM PDT            3.88             52         0              Normal
  04/08/2026 08 PM PDT            3.88             52         0              Normal
  04/08/2026 09 PM PDT            3.88             52         0              Normal
  04/08/2026 10 PM PDT            3.88             52         0              Normal
  04/08/2026 11 PM PDT            3.88             52         0              Normal
  04/09/2026 12 AM PDT            3.88             52         0              Normal
  04/09/2026 01 AM PDT            3.88             52         0              Normal
  04/09/2026 02 AM PDT            3.88             52         0              Normal
  04/09/2026 03 AM PDT            3.88             52         0              Normal
  04/09/2026 04 AM PDT            3.88             52         0              Normal
  04/09/2026 05 AM PDT            3.88             52         0              Normal
  04/09/2026 06 AM PDT            3.88             52         0              Normal
  04/09/2026 07 AM PDT            3.88             52         0              Normal
  04/09/2026 08 AM PDT            3.88             52         0              Normal
  04/09/2026 09 AM PDT            3.88             52         0              Normal
  04/09/2026 10 AM PDT            3.88             52         0              Normal
  04/09/2026 11 AM PDT            3.88             52         0              Normal
  04/09/2026 12 PM PDT            3.89             53         +              Normal
  04/09/2026 01 PM PDT            3.90             54         +              Normal
  04/09/2026 02 PM PDT            3.89             53         -              Normal
  04/09/2026 03 PM PDT            3.89             53         0              Normal
  04/09/2026 04 PM PDT            3.88             52         -              Normal
  04/09/2026 05 PM PDT            3.88             52         0              Normal
  04/09/2026 06 PM PDT            3.86             50         -              Normal
  04/09/2026 07 PM PDT            3.87             51         +              Normal
  04/09/2026 08 PM PDT            3.86             50         -              Normal
  04/09/2026 09 PM PDT            3.87             51         +              Normal
  04/09/2026 10 PM PDT            3.86             50         -              Normal
  04/09/2026 11 PM PDT            3.87             51         +              Normal
  04/10/2026 12 AM PDT            3.87             51         0              Normal
  04/10/2026 01 AM PDT            3.87             51         0              Normal
  04/10/2026 02 AM PDT            3.87             51         0              Normal
  04/10/2026 03 AM PDT            3.87             51         0              Normal
  04/10/2026 04 AM PDT            3.87             51         0              Normal
  04/10/2026 05 AM PDT            3.86             50         -              Normal
  04/10/2026 06 AM PDT            3.87             51         +              Normal
  04/10/2026 07 AM PDT            3.93             56         +              Normal
  04/10/2026 08 AM PDT            3.97             60         +              Normal
  04/10/2026 09 AM PDT            3.94             57         -              Normal
  04/10/2026 10 AM PDT            4.00             62         +              Normal
  04/10/2026 11 AM PDT            4.09             71         +              Normal
  04/10/2026 12 PM PDT            4.07             69         -              Normal
  04/10/2026 01 PM PDT            4.11             73         +              Normal
  04/10/2026 02 PM PDT            4.10             72         -              Normal
  04/10/2026 03 PM PDT            4.08             70         -              Normal
  04/10/2026 04 PM PDT            4.06             68         -              Normal
  04/10/2026 05 PM PDT            4.05             67         -              Normal
  04/10/2026 06 PM PDT            4.05             67         0              Normal
  04/10/2026 07 PM PDT            4.04             66         -              Normal
  04/10/2026 08 PM PDT            4.04             66         0              Normal
  04/10/2026 09 PM PDT            4.11             73         +              Normal
  04/10/2026 10 PM PDT            4.19             81         +              Normal
  04/10/2026 11 PM PDT            4.23             85         +              Normal
  04/11/2026 12 AM PDT            4.22             84         -              Normal
  04/11/2026 01 AM PDT            4.30             93         +              Normal
  04/11/2026 02 AM PDT            4.37            101         +              Normal
  04/11/2026 03 AM PDT            4.42            107         +              Normal
  04/11/2026 04 AM PDT            4.41            106         -              Normal
  04/11/2026 05 AM PDT            4.33             96         -              Normal
  04/11/2026 06 AM PDT            4.33             96         0              Normal
  04/11/2026 07 AM PDT            4.40            105         +              Normal
  04/11/2026 08 AM PDT            4.41            106         +              Normal
  04/11/2026 09 AM PDT            4.47            114         +              Normal
  04/11/2026 10 AM PDT            4.51            119         +              Normal
  04/11/2026 11 AM PDT            4.51            119         0              Normal
  04/11/2026 12 PM PDT            4.45            111         -              Normal
  04/11/2026 01 PM PDT            4.45            111         0              Normal
  04/11/2026 02 PM PDT            4.46            112         +              Normal
  04/11/2026 03 PM PDT            4.40            105         -              Normal
  04/11/2026 04 PM PDT            4.39            104         -              Normal
  04/11/2026 05 PM PDT            4.38            102         -              Normal
  04/11/2026 06 PM PDT            4.43            109         +              Normal
  04/11/2026 07 PM PDT            4.68            144         +              Normal
  04/11/2026 08 PM PDT            4.91            179         +              Normal
  04/11/2026 09 PM PDT            5.00            195         +              Normal
  04/11/2026 10 PM PDT            4.90            178         -              Normal
  04/11/2026 11 PM PDT            4.89            176         -              Normal
  04/12/2026 12 AM PDT            4.99            193         +              Normal
  04/12/2026 01 AM PDT            5.22            234         +              Normal
  04/12/2026 02 AM PDT            5.24            238         +              Normal
  04/12/2026 03 AM PDT            5.14            219         -              Normal
  04/12/2026 04 AM PDT            5.12            216         -              Normal
  04/12/2026 05 AM PDT            5.05            203         -              Normal
  04/12/2026 06 AM PDT            4.97            189         -              Normal
  04/12/2026 07 AM PDT            4.91            179         -              Normal
  04/12/2026 08 AM PDT            4.89            176         -              Normal
  04/12/2026 09 AM PDT            4.89            176         0              Normal
  04/12/2026 10 AM PDT            4.85            170         -              Normal
  04/12/2026 11 AM PDT            4.82            165         -              Normal
  04/12/2026 12 PM PDT            4.81            163         -              Normal
  04/12/2026 01 PM PDT            4.75            154         -              Normal
  04/12/2026 02 PM PDT            4.74            153         -              Normal
  04/12/2026 03 PM PDT            4.73            151         -              Normal
  04/12/2026 04 PM PDT            4.75            154         +              Normal
  04/12/2026 05 PM PDT            4.71            148         -              Normal
  04/12/2026 06 PM PDT            4.66            141         -              Normal
  04/12/2026 07 PM PDT            4.64            138         -              Normal
  04/12/2026 08 PM PDT            4.62            135         -              Normal
  04/12/2026 09 PM PDT            4.60            132         -              Normal
  04/12/2026 10 PM PDT            4.58            129         -              Normal
  04/12/2026 11 PM PDT            4.55            125         -              Normal
  04/13/2026 12 AM PDT            4.53            122         -              Normal
  04/13/2026 01 AM PDT            4.51            119         -              Normal
  04/13/2026 02 AM PDT            4.50            118         -              Normal
  04/13/2026 03 AM PDT            4.48            115         -              Normal
  04/13/2026 04 AM PDT            4.46            112         -              Normal
  04/13/2026 05 AM PDT            4.45            111         -              Normal
  04/13/2026 06 AM PDT            4.43            109         -              Normal
  04/13/2026 07 AM PDT            4.42            107         -              Normal
  04/13/2026 08 AM PDT            4.40            105         -              Normal
  04/13/2026 09 AM PDT            4.39            104         -              Normal
  04/13/2026 10 AM PDT            4.38            102         -              Normal
  04/13/2026 11 AM PDT            4.37            101         -              Normal
  04/13/2026 12 PM PDT            4.37            101         0              Normal
  04/13/2026 01 PM PDT            4.35             99         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/13/2026 02 PM PDT            4.34             98                        Normal
  04/13/2026 03 PM PDT            4.33             96         -              Normal
  04/13/2026 04 PM PDT            4.32             95         -              Normal
  04/13/2026 05 PM PDT            4.32             95         0              Normal
  04/13/2026 06 PM PDT            4.31             94         -              Normal
  04/13/2026 07 PM PDT            4.29             92         -              Normal
  04/13/2026 08 PM PDT            4.28             91         -              Normal
  04/13/2026 09 PM PDT            4.26             89         -              Normal
  04/13/2026 10 PM PDT            4.25             87         -              Normal
  04/13/2026 11 PM PDT            4.24             86         -              Normal
  04/14/2026 12 AM PDT            4.23             85         -              Normal
  04/14/2026 01 AM PDT            4.22             84         -              Normal
  04/14/2026 02 AM PDT            4.21             83         -              Normal
  04/14/2026 03 AM PDT            4.20             82         -              Normal
  04/14/2026 04 AM PDT            4.19             81         -              Normal
  04/14/2026 05 AM PDT            4.18             80         -              Normal
  04/14/2026 06 AM PDT            4.18             80         0              Normal
  04/14/2026 07 AM PDT            4.17             79         -              Normal
  04/14/2026 08 AM PDT            4.16             78         -              Normal
  04/14/2026 09 AM PDT            4.16             78         0              Normal
  04/14/2026 10 AM PDT            4.15             77         -              Normal
  04/14/2026 11 AM PDT            4.14             76         -              Normal
  04/14/2026 12 PM PDT            4.13             75         -              Normal
  04/14/2026 01 PM PDT            4.13             75         0              Normal
  04/14/2026 02 PM PDT            4.12             74         -              Normal
  04/14/2026 03 PM PDT            4.12             74         0              Normal
  04/14/2026 04 PM PDT            4.11             73         -              Normal
  04/14/2026 05 PM PDT            4.11             73         0              Normal
  04/14/2026 06 PM PDT            4.10             72         -              Normal
  04/14/2026 07 PM PDT            4.09             71         -              Normal
  04/14/2026 08 PM PDT            4.09             71         0              Normal
  04/14/2026 09 PM PDT            4.08             70         -              Normal
  04/14/2026 10 PM PDT            4.08             70         0              Normal
  04/14/2026 11 PM PDT            4.08             70         0              Normal
  04/15/2026 12 AM PDT            4.07             69         -              Normal
  04/15/2026 01 AM PDT            4.07             69         0              Normal
  04/15/2026 02 AM PDT            4.06             68         -              Normal
  04/15/2026 03 AM PDT            4.06             68         0              Normal
  04/15/2026 04 AM PDT            4.05             67         -              Normal
  04/15/2026 05 AM PDT            4.05             67         0              Normal
  04/15/2026 06 AM PDT            4.05             67         0              Normal
  04/15/2026 07 AM PDT            4.04             66         -              Normal
  04/15/2026 08 AM PDT            4.04             66         0              Normal
  04/15/2026 09 AM PDT            4.04             66         0              Normal
  04/15/2026 10 AM PDT            4.03             65         -              Normal
  04/15/2026 11 AM PDT            4.03             65         0              Normal
  04/15/2026 12 PM PDT            4.03             65         0              Normal
  04/15/2026 01 PM PDT            4.02             64         -              Normal
  04/15/2026 02 PM PDT            4.02             64         0              Normal
  04/15/2026 03 PM PDT            4.01             63         -              Normal
  04/15/2026 04 PM PDT            4.01             63         0              Normal
  04/15/2026 05 PM PDT            4.01             63         0              Normal
  04/15/2026 06 PM PDT            4.01             63         0              Normal
  04/15/2026 07 PM PDT            4.00             62         -              Normal
  04/15/2026 08 PM PDT            4.00             62         0              Normal
  04/15/2026 09 PM PDT            4.00             62         0              Normal
  04/15/2026 10 PM PDT            4.00             62         0              Normal
  04/15/2026 11 PM PDT            3.99             61         -              Normal
  04/16/2026 12 AM PDT            3.99             61         0              Normal
  04/16/2026 01 AM PDT            3.99             61         0              Normal
  04/16/2026 02 AM PDT            3.98             61         -              Normal
  04/16/2026 03 AM PDT            3.98             61         0              Normal
  04/16/2026 04 AM PDT            3.98             61         0              Normal
  04/16/2026 05 AM PDT            3.98             61         0              Normal
  04/16/2026 06 AM PDT            3.98             61         0              Normal
  04/16/2026 07 AM PDT            3.97             60         -              Normal
  04/16/2026 08 AM PDT            3.97             60         0              Normal
  04/16/2026 09 AM PDT            3.97             60         0              Normal
  04/16/2026 10 AM PDT            3.97             60         0              Normal
  04/16/2026 11 AM PDT            3.96             59         -              Normal
  04/16/2026 12 PM PDT            3.96             59         0              Normal
  04/16/2026 01 PM PDT            3.96             59         0              Normal
  04/16/2026 02 PM PDT            3.96             59         0              Normal
  04/16/2026 03 PM PDT            3.96             59         0              Normal
  04/16/2026 04 PM PDT            3.96             59         0              Normal
  04/16/2026 05 PM PDT            3.95             58         -              Normal
  04/16/2026 06 PM PDT            3.95             58         0              Normal
  04/16/2026 07 PM PDT            3.95             58         0              Normal
  04/16/2026 08 PM PDT            3.95             58         0              Normal
  04/16/2026 09 PM PDT            3.94             57         -              Normal
  04/16/2026 10 PM PDT            3.94             57         0              Normal
  04/16/2026 11 PM PDT            3.94             57         0              Normal
  04/17/2026 12 AM PDT            3.94             57         0              Normal
  04/17/2026 01 AM PDT            3.94             57         0              Normal
  04/17/2026 02 AM PDT            3.93             56         -              Normal
  04/17/2026 03 AM PDT            3.93             56         0              Normal
  04/17/2026 04 AM PDT            3.93             56         0              Normal
  04/17/2026 05 AM PDT            3.93             56         0              Normal
  04/17/2026 06 AM PDT            3.93             56         0              Normal
  04/17/2026 07 AM PDT            3.93             56         0              Normal
  04/17/2026 08 AM PDT            3.92             55         -              Normal
  04/17/2026 09 AM PDT            3.92             55         0              Normal
  04/17/2026 10 AM PDT            3.92             55         0              Normal
  04/17/2026 11 AM PDT            3.92             55         0              Normal
  04/17/2026 12 PM PDT            3.92             55         0              Normal
  04/17/2026 01 PM PDT            3.92             55         0              Normal
  04/17/2026 02 PM PDT            3.92             55         0              Normal
  04/17/2026 03 PM PDT            3.91             55         -              Normal
  04/17/2026 04 PM PDT            3.91             55         0              Normal
  04/17/2026 05 PM PDT            3.91             55         0              Normal
  04/17/2026 06 PM PDT            3.91             55         0              Normal
  04/17/2026 07 PM PDT            3.91             55         0              Normal
  04/17/2026 08 PM PDT            3.91             55         0              Normal
  04/17/2026 09 PM PDT            3.90             54         -              Normal
  04/17/2026 10 PM PDT            3.90             54         0              Normal
  04/17/2026 11 PM PDT            3.90             54         0              Normal
  04/18/2026 12 AM PDT            3.90             54         0              Normal
  04/18/2026 01 AM PDT            3.90             54         0              Normal
  04/18/2026 02 AM PDT            3.90             54         0              Normal
  04/18/2026 03 AM PDT            3.90             54         0              Normal
  04/18/2026 04 AM PDT            3.90             54         0              Normal
  04/18/2026 05 AM PDT            3.89             53         -              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.