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: Dec 25 2025 at 2:02 PM PSTNext Issuance: Dec 26 2025 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:  12/25/2025 at 02:03 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  12/25/2025 at 09:00 AM PST
# Maximum Observed Stage:                       7.72 Feet
# Maximum Observed Flow:                        905 cfs
#
# Earliest Date & Time of Maximum Forecast:     12/26/2025 at 01:00 AM PST
# Maximum Forecast Stage:                       7.31 Feet
# Maximum Forecast Flow:                        747 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  12/20/2025 02 PM PST            3.45             29                        Normal
  12/20/2025 03 PM PST            3.46             29         +              Normal
  12/20/2025 04 PM PST            3.46             29         0              Normal
  12/20/2025 05 PM PST            3.47             30         +              Normal
  12/20/2025 06 PM PST            3.46             29         -              Normal
  12/20/2025 07 PM PST            3.46             29         0              Normal
  12/20/2025 08 PM PST            3.47             30         +              Normal
  12/20/2025 09 PM PST            3.46             29         -              Normal
  12/20/2025 10 PM PST            3.47             30         +              Normal
  12/20/2025 11 PM PST            3.47             30         0              Normal
  12/21/2025 12 AM PST            3.48             30         +              Normal
  12/21/2025 01 AM PST            3.54             33         +              Normal
  12/21/2025 02 AM PST            3.65             40         +              Normal
  12/21/2025 03 AM PST            3.74             46         +              Normal
  12/21/2025 04 AM PST            3.76             47         +              Normal
  12/21/2025 05 AM PST            3.78             48         +              Normal
  12/21/2025 06 AM PST            3.80             50         +              Normal
  12/21/2025 07 AM PST            3.78             48         -              Normal
  12/21/2025 08 AM PST            3.77             48         -              Normal
  12/21/2025 09 AM PST            3.79             49         +              Normal
  12/21/2025 10 AM PST            3.80             50         +              Normal
  12/21/2025 11 AM PST            3.79             49         -              Normal
  12/21/2025 12 PM PST            3.84             53         +              Normal
  12/21/2025 01 PM PST            3.88             55         +              Normal
  12/21/2025 02 PM PST            3.88             55         0              Normal
  12/21/2025 03 PM PST            3.89             56         +              Normal
  12/21/2025 04 PM PST            3.91             58         +              Normal
  12/21/2025 05 PM PST            3.94             60         +              Normal
  12/21/2025 06 PM PST            3.95             61         +              Normal
  12/21/2025 07 PM PST            3.93             59         -              Normal
  12/21/2025 08 PM PST            3.93             59         0              Normal
  12/21/2025 09 PM PST            3.96             62         +              Normal
  12/21/2025 10 PM PST            3.98             63         +              Normal
  12/21/2025 11 PM PST            3.97             62         -              Normal
  12/22/2025 12 AM PST            3.97             62         0              Normal
  12/22/2025 01 AM PST            3.97             62         0              Normal
  12/22/2025 02 AM PST            3.96             62         -              Normal
  12/22/2025 03 AM PST            3.95             61         -              Normal
  12/22/2025 04 AM PST            3.99             64         +              Normal
  12/22/2025 05 AM PST            4.01             66         +              Normal
  12/22/2025 06 AM PST            4.00             65         -              Normal
  12/22/2025 07 AM PST            4.01             66         +              Normal
  12/22/2025 08 AM PST            4.02             66         +              Normal
  12/22/2025 09 AM PST            4.00             65         -              Normal
  12/22/2025 10 AM PST            4.08             71         +              Normal
  12/22/2025 11 AM PST            4.05             69         -              Normal
  12/22/2025 12 PM PST            4.03             67         -              Normal
  12/22/2025 01 PM PST            4.06             70         +              Normal
  12/22/2025 02 PM PST            4.03             67         -              Normal
  12/22/2025 03 PM PST            4.00             65         -              Normal
  12/22/2025 04 PM PST            3.99             64         -              Normal
  12/22/2025 05 PM PST            4.00             65         +              Normal
  12/22/2025 06 PM PST            3.99             64         -              Normal
  12/22/2025 07 PM PST            4.01             66         +              Normal
  12/22/2025 08 PM PST            4.01             66         0              Normal
  12/22/2025 09 PM PST            4.08             71         +              Normal
  12/22/2025 10 PM PST            4.09             72         +              Normal
  12/22/2025 11 PM PST            4.08             71         -              Normal
  12/23/2025 12 AM PST            4.05             69         -              Normal
  12/23/2025 01 AM PST            4.04             68         -              Normal
  12/23/2025 02 AM PST            4.02             66         -              Normal
  12/23/2025 03 AM PST            3.98             63         -              Normal
  12/23/2025 04 AM PST            3.95             61         -              Normal
  12/23/2025 05 AM PST            3.93             59         -              Normal
  12/23/2025 06 AM PST            3.91             58         -              Normal
  12/23/2025 07 AM PST            3.90             57         -              Normal
  12/23/2025 08 AM PST            3.89             56         -              Normal
  12/23/2025 09 AM PST            3.88             55         -              Normal
  12/23/2025 10 AM PST            3.88             55         0              Normal
  12/23/2025 11 AM PST            3.87             55         -              Normal
  12/23/2025 12 PM PST            3.86             54         -              Normal
  12/23/2025 01 PM PST            3.85             53         -              Normal
  12/23/2025 02 PM PST            3.84             53         -              Normal
  12/23/2025 03 PM PST            3.83             52         -              Normal
  12/23/2025 04 PM PST            3.83             52         0              Normal
  12/23/2025 05 PM PST            3.82             51         -              Normal
  12/23/2025 06 PM PST            3.98             63         +              Normal
  12/23/2025 07 PM PST            4.10             73         +              Normal
  12/23/2025 08 PM PST            4.02             66         -              Normal
  12/23/2025 09 PM PST            4.09             72         +              Normal
  12/23/2025 10 PM PST            4.04             68         -              Normal
  12/23/2025 11 PM PST            4.02             66         -              Normal
  12/24/2025 12 AM PST            3.98             63         -              Normal
  12/24/2025 01 AM PST            3.97             62         -              Normal
  12/24/2025 02 AM PST            4.02             66         +              Normal
  12/24/2025 03 AM PST            4.04             68         +              Normal
  12/24/2025 04 AM PST            4.04             68         0              Normal
  12/24/2025 05 AM PST            4.15             77         +              Normal
  12/24/2025 06 AM PST            4.11             74         -              Normal
  12/24/2025 07 AM PST            4.10             73         -              Normal
  12/24/2025 08 AM PST            4.13             76         +              Normal
  12/24/2025 09 AM PST            4.13             76         0              Normal
  12/24/2025 10 AM PST            4.18             80         +              Normal
  12/24/2025 11 AM PST            4.29             91         +              Normal
  12/24/2025 12 PM PST            4.31             92         +              Normal
  12/24/2025 01 PM PST            4.33             94         +              Normal
  12/24/2025 02 PM PST            4.34             95         +              Normal
  12/24/2025 03 PM PST            4.32             93         -              Normal
  12/24/2025 04 PM PST            4.30             92         -              Normal
  12/24/2025 05 PM PST            4.29             91         -              Normal
  12/24/2025 06 PM PST            4.28             90         -              Normal
  12/24/2025 07 PM PST            4.28             90         0              Normal
  12/24/2025 08 PM PST            4.30             92         +              Normal
  12/24/2025 09 PM PST            4.37             99         +              Normal
  12/24/2025 10 PM PST            4.43            105         +              Normal
  12/24/2025 11 PM PST            4.43            105         0              Normal
  12/25/2025 12 AM PST            4.45            107         +              Normal
  12/25/2025 01 AM PST            4.45            107         0              Normal
  12/25/2025 02 AM PST            4.42            104         -              Normal
  12/25/2025 03 AM PST            4.71            138         +              Normal
  12/25/2025 04 AM PST            5.01            179         +              Normal
  12/25/2025 05 AM PST            5.48            252         +              Normal
  12/25/2025 06 AM PST            5.76            304         +              Normal
  12/25/2025 07 AM PST            6.58            507         +              Normal
  12/25/2025 08 AM PST            7.39            776         +              Normal
  12/25/2025 09 AM PST            7.72            905         +              Normal
  12/25/2025 10 AM PST            7.63            869         -              Normal
  12/25/2025 11 AM PST            7.36            765         -              Normal
  12/25/2025 12 PM PST            7.01            642         -              Normal
  12/25/2025 01 PM PST            6.66            530         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  12/25/2025 02 PM PST            6.34            439                        Normal
  12/25/2025 03 PM PST            6.09            374         -              Normal
  12/25/2025 04 PM PST            5.89            330         -              Normal
  12/25/2025 05 PM PST            5.72            296         -              Normal
  12/25/2025 06 PM PST            5.59            272         -              Normal
  12/25/2025 07 PM PST            5.51            257         -              Normal
  12/25/2025 08 PM PST            5.47            250         -              Normal
  12/25/2025 09 PM PST            5.55            264         +              Normal
  12/25/2025 10 PM PST            6.05            364         +              Normal
  12/25/2025 11 PM PST            6.66            530         +              Normal
  12/26/2025 12 AM PST            7.09            669         +              Normal
  12/26/2025 01 AM PST            7.31            747         +              Normal
  12/26/2025 02 AM PST            7.31            747         0              Normal
  12/26/2025 03 AM PST            7.25            725         -              Normal
  12/26/2025 04 AM PST            7.20            707         -              Normal
  12/26/2025 05 AM PST            7.16            693         -              Normal
  12/26/2025 06 AM PST            7.12            679         -              Normal
  12/26/2025 07 AM PST            7.09            669         -              Normal
  12/26/2025 08 AM PST            7.06            659         -              Normal
  12/26/2025 09 AM PST            7.03            648         -              Normal
  12/26/2025 10 AM PST            7.00            638         -              Normal
  12/26/2025 11 AM PST            6.98            632         -              Normal
  12/26/2025 12 PM PST            6.96            625         -              Normal
  12/26/2025 01 PM PST            6.95            622         -              Normal
  12/26/2025 02 PM PST            6.85            589         -              Normal
  12/26/2025 03 PM PST            6.75            558         -              Normal
  12/26/2025 04 PM PST            6.67            533         -              Normal
  12/26/2025 05 PM PST            6.60            512         -              Normal
  12/26/2025 06 PM PST            6.56            501         -              Normal
  12/26/2025 07 PM PST            6.56            501         0              Normal
  12/26/2025 08 PM PST            6.62            518         +              Normal
  12/26/2025 09 PM PST            6.71            546         +              Normal
  12/26/2025 10 PM PST            6.79            570         +              Normal
  12/26/2025 11 PM PST            6.83            583         +              Normal
  12/27/2025 12 AM PST            6.81            577         -              Normal
  12/27/2025 01 AM PST            6.75            558         -              Normal
  12/27/2025 02 AM PST            6.66            530         -              Normal
  12/27/2025 03 AM PST            6.56            501         -              Normal
  12/27/2025 04 AM PST            6.47            475         -              Normal
  12/27/2025 05 AM PST            6.39            453         -              Normal
  12/27/2025 06 AM PST            6.33            436         -              Normal
  12/27/2025 07 AM PST            6.28            423         -              Normal
  12/27/2025 08 AM PST            6.22            407         -              Normal
  12/27/2025 09 AM PST            6.17            394         -              Normal
  12/27/2025 10 AM PST            6.10            377         -              Normal
  12/27/2025 11 AM PST            6.02            357         -              Normal
  12/27/2025 12 PM PST            5.92            336         -              Normal
  12/27/2025 01 PM PST            5.81            313         -              Normal
  12/27/2025 02 PM PST            5.71            294         -              Normal
  12/27/2025 03 PM PST            5.61            275         -              Normal
  12/27/2025 04 PM PST            5.51            257         -              Normal
  12/27/2025 05 PM PST            5.43            243         -              Normal
  12/27/2025 06 PM PST            5.35            230         -              Normal
  12/27/2025 07 PM PST            5.27            218         -              Normal
  12/27/2025 08 PM PST            5.20            207         -              Normal
  12/27/2025 09 PM PST            5.14            198         -              Normal
  12/27/2025 10 PM PST            5.08            189         -              Normal
  12/27/2025 11 PM PST            5.03            182         -              Normal
  12/28/2025 12 AM PST            4.97            173         -              Normal
  12/28/2025 01 AM PST            4.93            167         -              Normal
  12/28/2025 02 AM PST            4.88            161         -              Normal
  12/28/2025 03 AM PST            4.84            155         -              Normal
  12/28/2025 04 AM PST            4.79            149         -              Normal
  12/28/2025 05 AM PST            4.76            145         -              Normal
  12/28/2025 06 AM PST            4.72            140         -              Normal
  12/28/2025 07 AM PST            4.68            134         -              Normal
  12/28/2025 08 AM PST            4.65            131         -              Normal
  12/28/2025 09 AM PST            4.62            127         -              Normal
  12/28/2025 10 AM PST            4.59            123         -              Normal
  12/28/2025 11 AM PST            4.56            120         -              Normal
  12/28/2025 12 PM PST            4.53            116         -              Normal
  12/28/2025 01 PM PST            4.51            114         -              Normal
  12/28/2025 02 PM PST            4.48            110         -              Normal
  12/28/2025 03 PM PST            4.46            108         -              Normal
  12/28/2025 04 PM PST            4.43            105         -              Normal
  12/28/2025 05 PM PST            4.41            103         -              Normal
  12/28/2025 06 PM PST            4.39            101         -              Normal
  12/28/2025 07 PM PST            4.37             99         -              Normal
  12/28/2025 08 PM PST            4.34             95         -              Normal
  12/28/2025 09 PM PST            4.33             94         -              Normal
  12/28/2025 10 PM PST            4.31             92         -              Normal
  12/28/2025 11 PM PST            4.29             91         -              Normal
  12/29/2025 12 AM PST            4.27             89         -              Normal
  12/29/2025 01 AM PST            4.26             88         -              Normal
  12/29/2025 02 AM PST            4.24             86         -              Normal
  12/29/2025 03 AM PST            4.23             85         -              Normal
  12/29/2025 04 AM PST            4.21             83         -              Normal
  12/29/2025 05 AM PST            4.20             82         -              Normal
  12/29/2025 06 AM PST            4.19             81         -              Normal
  12/29/2025 07 AM PST            4.18             80         -              Normal
  12/29/2025 08 AM PST            4.17             79         -              Normal
  12/29/2025 09 AM PST            4.15             77         -              Normal
  12/29/2025 10 AM PST            4.14             77         -              Normal
  12/29/2025 11 AM PST            4.13             76         -              Normal
  12/29/2025 12 PM PST            4.12             75         -              Normal
  12/29/2025 01 PM PST            4.11             74         -              Normal
  12/29/2025 02 PM PST            4.11             74         0              Normal
  12/29/2025 03 PM PST            4.10             73         -              Normal
  12/29/2025 04 PM PST            4.09             72         -              Normal
  12/29/2025 05 PM PST            4.08             71         -              Normal
  12/29/2025 06 PM PST            4.07             71         -              Normal
  12/29/2025 07 PM PST            4.07             71         0              Normal
  12/29/2025 08 PM PST            4.06             70         -              Normal
  12/29/2025 09 PM PST            4.05             69         -              Normal
  12/29/2025 10 PM PST            4.04             68         -              Normal
  12/29/2025 11 PM PST            4.04             68         0              Normal
  12/30/2025 12 AM PST            4.03             67         -              Normal
  12/30/2025 01 AM PST            4.03             67         0              Normal
  12/30/2025 02 AM PST            4.02             66         -              Normal
  12/30/2025 03 AM PST            4.02             66         0              Normal
  12/30/2025 04 AM PST            4.01             66         -              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.