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 24 2026 at 7:17 AM PDTNext Issuance: Apr 25 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:  04/24/2026 at 07:17 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/21/2026 at 07:00 AM PDT
# Maximum Observed Stage:                       5.66 Feet
# Maximum Observed Flow:                        332 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/24/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       4.51 Feet
# Maximum Forecast Flow:                        124 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/19/2026 07 AM PDT            3.98             65                        Normal
  04/19/2026 08 AM PDT            3.98             65         0              Normal
  04/19/2026 09 AM PDT            3.98             65         0              Normal
  04/19/2026 10 AM PDT            3.98             65         0              Normal
  04/19/2026 11 AM PDT            3.98             65         0              Normal
  04/19/2026 12 PM PDT            3.99             65         +              Normal
  04/19/2026 01 PM PDT            3.98             65         -              Normal
  04/19/2026 02 PM PDT            3.98             65         0              Normal
  04/19/2026 03 PM PDT            3.98             65         0              Normal
  04/19/2026 04 PM PDT            3.97             64         -              Normal
  04/19/2026 05 PM PDT            3.96             63         -              Normal
  04/19/2026 06 PM PDT            3.97             64         +              Normal
  04/19/2026 07 PM PDT            3.97             64         0              Normal
  04/19/2026 08 PM PDT            3.97             64         0              Normal
  04/19/2026 09 PM PDT            3.97             64         0              Normal
  04/19/2026 10 PM PDT            3.96             63         -              Normal
  04/19/2026 11 PM PDT            3.96             63         0              Normal
  04/20/2026 12 AM PDT            3.96             63         0              Normal
  04/20/2026 01 AM PDT            3.96             63         0              Normal
  04/20/2026 02 AM PDT            3.96             63         0              Normal
  04/20/2026 03 AM PDT            3.96             63         0              Normal
  04/20/2026 04 AM PDT            3.96             63         0              Normal
  04/20/2026 05 AM PDT            3.96             63         0              Normal
  04/20/2026 06 AM PDT            3.96             63         0              Normal
  04/20/2026 07 AM PDT            3.96             63         0              Normal
  04/20/2026 08 AM PDT            3.96             63         0              Normal
  04/20/2026 09 AM PDT            3.96             63         0              Normal
  04/20/2026 10 AM PDT            3.97             64         +              Normal
  04/20/2026 11 AM PDT            3.97             64         0              Normal
  04/20/2026 12 PM PDT            3.96             63         -              Normal
  04/20/2026 01 PM PDT            3.96             63         0              Normal
  04/20/2026 02 PM PDT            3.98             65         +              Normal
  04/20/2026 03 PM PDT            4.03             69         +              Normal
  04/20/2026 04 PM PDT            4.09             75         +              Normal
  04/20/2026 05 PM PDT            4.42            112         +              Normal
  04/20/2026 06 PM PDT            4.37            106         -              Normal
  04/20/2026 07 PM PDT            4.58            134         +              Normal
  04/20/2026 08 PM PDT            4.56            131         -              Normal
  04/20/2026 09 PM PDT            4.79            166         +              Normal
  04/20/2026 10 PM PDT            4.74            158         -              Normal
  04/20/2026 11 PM PDT            4.93            188         +              Normal
  04/21/2026 12 AM PDT            5.04            207         +              Normal
  04/21/2026 01 AM PDT            5.25            245         +              Normal
  04/21/2026 02 AM PDT            5.42            279         +              Normal
  04/21/2026 03 AM PDT            5.48            292         +              Normal
  04/21/2026 04 AM PDT            5.50            296         +              Normal
  04/21/2026 05 AM PDT            5.58            314         +              Normal
  04/21/2026 06 AM PDT            5.62            323         +              Normal
  04/21/2026 07 AM PDT            5.66            332         +              Normal
  04/21/2026 08 AM PDT            5.61            321         -              Normal
  04/21/2026 09 AM PDT            5.53            303         -              Normal
  04/21/2026 10 AM PDT            5.49            294         -              Normal
  04/21/2026 11 AM PDT            5.41            277         -              Normal
  04/21/2026 12 PM PDT            5.34            263         -              Normal
  04/21/2026 01 PM PDT            5.29            252         -              Normal
  04/21/2026 02 PM PDT            5.24            243         -              Normal
  04/21/2026 03 PM PDT            5.31            256         +              Normal
  04/21/2026 04 PM PDT            5.31            256         0              Normal
  04/21/2026 05 PM PDT            5.26            247         -              Normal
  04/21/2026 06 PM PDT            5.18            232         -              Normal
  04/21/2026 07 PM PDT            5.14            225         -              Normal
  04/21/2026 08 PM PDT            5.08            214         -              Normal
  04/21/2026 09 PM PDT            5.04            207         -              Normal
  04/21/2026 10 PM PDT            5.01            202         -              Normal
  04/21/2026 11 PM PDT            4.97            195         -              Normal
  04/22/2026 12 AM PDT            4.95            191         -              Normal
  04/22/2026 01 AM PDT            4.92            186         -              Normal
  04/22/2026 02 AM PDT            4.89            182         -              Normal
  04/22/2026 03 AM PDT            4.87            178         -              Normal
  04/22/2026 04 AM PDT            4.85            175         -              Normal
  04/22/2026 05 AM PDT            4.83            172         -              Normal
  04/22/2026 06 AM PDT            4.81            169         -              Normal
  04/22/2026 07 AM PDT            4.79            166         -              Normal
  04/22/2026 08 AM PDT            4.78            164         -              Normal
  04/22/2026 09 AM PDT            4.77            162         -              Normal
  04/22/2026 10 AM PDT            4.79            166         +              Normal
  04/22/2026 11 AM PDT            4.82            170         +              Normal
  04/22/2026 12 PM PDT            4.85            175         +              Normal
  04/22/2026 01 PM PDT            4.94            190         +              Normal
  04/22/2026 02 PM PDT            4.95            191         +              Normal
  04/22/2026 03 PM PDT            4.94            190         -              Normal
  04/22/2026 04 PM PDT            4.93            188         -              Normal
  04/22/2026 05 PM PDT            4.92            186         -              Normal
  04/22/2026 06 PM PDT            4.92            186         0              Normal
  04/22/2026 07 PM PDT            4.90            183         -              Normal
  04/22/2026 08 PM PDT            4.88            180         -              Normal
  04/22/2026 09 PM PDT            4.86            177         -              Normal
  04/22/2026 10 PM PDT            4.85            175         -              Normal
  04/22/2026 11 PM PDT            4.83            172         -              Normal
  04/23/2026 12 AM PDT            4.82            170         -              Normal
  04/23/2026 01 AM PDT            4.81            169         -              Normal
  04/23/2026 02 AM PDT            4.79            166         -              Normal
  04/23/2026 03 AM PDT            4.77            162         -              Normal
  04/23/2026 04 AM PDT            4.76            161         -              Normal
  04/23/2026 05 AM PDT            4.74            158         -              Normal
  04/23/2026 06 AM PDT            4.73            156         -              Normal
  04/23/2026 07 AM PDT            4.72            155         -              Normal
  04/23/2026 08 AM PDT            4.71            153         -              Normal
  04/23/2026 09 AM PDT            4.70            152         -              Normal
  04/23/2026 10 AM PDT            4.69            150         -              Normal
  04/23/2026 11 AM PDT            4.68            149         -              Normal
  04/23/2026 12 PM PDT            4.68            149         0              Normal
  04/23/2026 01 PM PDT            4.67            147         -              Normal
  04/23/2026 02 PM PDT            4.65            145         -              Normal
  04/23/2026 03 PM PDT            4.65            145         0              Normal
  04/23/2026 04 PM PDT            4.64            143         -              Normal
  04/23/2026 05 PM PDT            4.63            142         -              Normal
  04/23/2026 06 PM PDT            4.62            140         -              Normal
  04/23/2026 07 PM PDT            4.62            140         0              Normal
  04/23/2026 08 PM PDT            4.61            139         -              Normal
  04/23/2026 09 PM PDT            4.60            137         -              Normal
  04/23/2026 10 PM PDT            4.59            136         -              Normal
  04/23/2026 11 PM PDT            4.58            134         -              Normal
  04/24/2026 12 AM PDT            4.57            133         -              Normal
  04/24/2026 01 AM PDT            4.56            131         -              Normal
  04/24/2026 02 AM PDT            4.55            130         -              Normal
  04/24/2026 03 AM PDT            4.55            130         0              Normal
  04/24/2026 04 AM PDT            4.54            129         -              Normal
  04/24/2026 05 AM PDT            4.53            127         -              Normal
  04/24/2026 06 AM PDT            4.53            127         0              Normal
  04/24/2026 07 AM PDT            4.52            126         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/24/2026 08 AM PDT            4.51            124                        Normal
  04/24/2026 09 AM PDT            4.50            123         -              Normal
  04/24/2026 10 AM PDT            4.49            122         -              Normal
  04/24/2026 11 AM PDT            4.49            122         0              Normal
  04/24/2026 12 PM PDT            4.48            120         -              Normal
  04/24/2026 01 PM PDT            4.47            119         -              Normal
  04/24/2026 02 PM PDT            4.46            118         -              Normal
  04/24/2026 03 PM PDT            4.45            116         -              Normal
  04/24/2026 04 PM PDT            4.44            115         -              Normal
  04/24/2026 05 PM PDT            4.44            115         0              Normal
  04/24/2026 06 PM PDT            4.43            114         -              Normal
  04/24/2026 07 PM PDT            4.42            112         -              Normal
  04/24/2026 08 PM PDT            4.41            111         -              Normal
  04/24/2026 09 PM PDT            4.41            111         0              Normal
  04/24/2026 10 PM PDT            4.40            110         -              Normal
  04/24/2026 11 PM PDT            4.39            108         -              Normal
  04/25/2026 12 AM PDT            4.38            107         -              Normal
  04/25/2026 01 AM PDT            4.38            107         0              Normal
  04/25/2026 02 AM PDT            4.37            106         -              Normal
  04/25/2026 03 AM PDT            4.36            105         -              Normal
  04/25/2026 04 AM PDT            4.36            105         0              Normal
  04/25/2026 05 AM PDT            4.35            103         -              Normal
  04/25/2026 06 AM PDT            4.34            102         -              Normal
  04/25/2026 07 AM PDT            4.33            101         -              Normal
  04/25/2026 08 AM PDT            4.33            101         0              Normal
  04/25/2026 09 AM PDT            4.32            100         -              Normal
  04/25/2026 10 AM PDT            4.31             99         -              Normal
  04/25/2026 11 AM PDT            4.31             99         0              Normal
  04/25/2026 12 PM PDT            4.30             98         -              Normal
  04/25/2026 01 PM PDT            4.29             96         -              Normal
  04/25/2026 02 PM PDT            4.29             96         0              Normal
  04/25/2026 03 PM PDT            4.28             95         -              Normal
  04/25/2026 04 PM PDT            4.27             94         -              Normal
  04/25/2026 05 PM PDT            4.27             94         0              Normal
  04/25/2026 06 PM PDT            4.26             93         -              Normal
  04/25/2026 07 PM PDT            4.25             92         -              Normal
  04/25/2026 08 PM PDT            4.25             92         0              Normal
  04/25/2026 09 PM PDT            4.24             91         -              Normal
  04/25/2026 10 PM PDT            4.23             90         -              Normal
  04/25/2026 11 PM PDT            4.23             90         0              Normal
  04/26/2026 12 AM PDT            4.22             89         -              Normal
  04/26/2026 01 AM PDT            4.22             89         0              Normal
  04/26/2026 02 AM PDT            4.21             88         -              Normal
  04/26/2026 03 AM PDT            4.21             88         0              Normal
  04/26/2026 04 AM PDT            4.20             86         -              Normal
  04/26/2026 05 AM PDT            4.20             86         0              Normal
  04/26/2026 06 AM PDT            4.19             85         -              Normal
  04/26/2026 07 AM PDT            4.19             85         0              Normal
  04/26/2026 08 AM PDT            4.18             84         -              Normal
  04/26/2026 09 AM PDT            4.17             83         -              Normal
  04/26/2026 10 AM PDT            4.17             83         0              Normal
  04/26/2026 11 AM PDT            4.16             82         -              Normal
  04/26/2026 12 PM PDT            4.15             81         -              Normal
  04/26/2026 01 PM PDT            4.14             80         -              Normal
  04/26/2026 02 PM PDT            4.14             80         0              Normal
  04/26/2026 03 PM PDT            4.13             79         -              Normal
  04/26/2026 04 PM PDT            4.12             78         -              Normal
  04/26/2026 05 PM PDT            4.12             78         0              Normal
  04/26/2026 06 PM PDT            4.11             77         -              Normal
  04/26/2026 07 PM PDT            4.10             76         -              Normal
  04/26/2026 08 PM PDT            4.10             76         0              Normal
  04/26/2026 09 PM PDT            4.09             75         -              Normal
  04/26/2026 10 PM PDT            4.09             75         0              Normal
  04/26/2026 11 PM PDT            4.08             74         -              Normal
  04/27/2026 12 AM PDT            4.07             73         -              Normal
  04/27/2026 01 AM PDT            4.07             73         0              Normal
  04/27/2026 02 AM PDT            4.06             72         -              Normal
  04/27/2026 03 AM PDT            4.05             71         -              Normal
  04/27/2026 04 AM PDT            4.05             71         0              Normal
  04/27/2026 05 AM PDT            4.04             70         -              Normal
  04/27/2026 06 AM PDT            4.04             70         0              Normal
  04/27/2026 07 AM PDT            4.03             69         -              Normal
  04/27/2026 08 AM PDT            4.02             68         -              Normal
  04/27/2026 09 AM PDT            4.02             68         0              Normal
  04/27/2026 10 AM PDT            4.01             67         -              Normal
  04/27/2026 11 AM PDT            4.00             66         -              Normal
  04/27/2026 12 PM PDT            4.00             66         0              Normal
  04/27/2026 01 PM PDT            3.99             65         -              Normal
  04/27/2026 02 PM PDT            3.99             65         0              Normal
  04/27/2026 03 PM PDT            3.98             65         -              Normal
  04/27/2026 04 PM PDT            3.97             64         -              Normal
  04/27/2026 05 PM PDT            3.97             64         0              Normal
  04/27/2026 06 PM PDT            3.96             63         -              Normal
  04/27/2026 07 PM PDT            3.95             62         -              Normal
  04/27/2026 08 PM PDT            3.95             62         0              Normal
  04/27/2026 09 PM PDT            3.94             61         -              Normal
  04/27/2026 10 PM PDT            3.93             60         -              Normal
  04/27/2026 11 PM PDT            3.93             60         0              Normal
  04/28/2026 12 AM PDT            3.92             59         -              Normal
  04/28/2026 01 AM PDT            3.91             58         -              Normal
  04/28/2026 02 AM PDT            3.91             58         0              Normal
  04/28/2026 03 AM PDT            3.90             57         -              Normal
  04/28/2026 04 AM PDT            3.89             57         -              Normal
  04/28/2026 05 AM PDT            3.89             57         0              Normal
  04/28/2026 06 AM PDT            3.88             56         -              Normal
  04/28/2026 07 AM PDT            3.87             55         -              Normal
  04/28/2026 08 AM PDT            3.87             55         0              Normal
  04/28/2026 09 AM PDT            3.86             54         -              Normal
  04/28/2026 10 AM PDT            3.85             53         -              Normal
  04/28/2026 11 AM PDT            3.85             53         0              Normal
  04/28/2026 12 PM PDT            3.84             52         -              Normal
  04/28/2026 01 PM PDT            3.83             52         -              Normal
  04/28/2026 02 PM PDT            3.83             52         0              Normal
  04/28/2026 03 PM PDT            3.82             51         -              Normal
  04/28/2026 04 PM PDT            3.81             50         -              Normal
  04/28/2026 05 PM PDT            3.80             49         -              Normal
  04/28/2026 06 PM PDT            3.80             49         0              Normal
  04/28/2026 07 PM PDT            3.79             49         -              Normal
  04/28/2026 08 PM PDT            3.78             48         -              Normal
  04/28/2026 09 PM PDT            3.78             48         0              Normal
  04/28/2026 10 PM PDT            3.77             47         -              Normal
  04/28/2026 11 PM PDT            3.76             46         -              Normal
  04/29/2026 12 AM PDT            3.75             45         -              Normal
  04/29/2026 01 AM PDT            3.75             45         0              Normal
  04/29/2026 02 AM PDT            3.74             45         -              Normal
  04/29/2026 03 AM PDT            3.73             44         -              Normal
  04/29/2026 04 AM PDT            3.72             43         -              Normal
  04/29/2026 05 AM PDT            3.72             43         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.