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: Nov 12 2025 at 1:22 PM PSTNext Issuance: Nov 13 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:  11/12/2025 at 01:23 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  11/07/2025 at 01:00 PM PST
# Maximum Observed Stage:                       3.45 Feet
# Maximum Observed Flow:                        27 cfs
#
# Earliest Date & Time of Maximum Forecast:     11/13/2025 at 02:00 PM PST
# Maximum Forecast Stage:                       4.96 Feet
# Maximum Forecast Flow:                        166 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  11/07/2025 01 PM PST            3.45             27                        Normal
  11/07/2025 02 PM PST            3.44             26         -              Normal
  11/07/2025 03 PM PST            3.44             26         0              Normal
  11/07/2025 04 PM PST            3.43             26         -              Normal
  11/07/2025 05 PM PST            3.43             26         0              Normal
  11/07/2025 06 PM PST            3.42             25         -              Normal
  11/07/2025 07 PM PST            3.42             25         0              Normal
  11/07/2025 08 PM PST            3.42             25         0              Normal
  11/07/2025 09 PM PST            3.41             25         -              Normal
  11/07/2025 10 PM PST            3.41             25         0              Normal
  11/07/2025 11 PM PST            3.41             25         0              Normal
  11/08/2025 12 AM PST            3.40             24         -              Normal
  11/08/2025 01 AM PST            3.40             24         0              Normal
  11/08/2025 02 AM PST            3.40             24         0              Normal
  11/08/2025 03 AM PST            3.40             24         0              Normal
  11/08/2025 04 AM PST            3.39             24         -              Normal
  11/08/2025 05 AM PST            3.39             24         0              Normal
  11/08/2025 06 AM PST            3.39             24         0              Normal
  11/08/2025 07 AM PST            3.39             24         0              Normal
  11/08/2025 08 AM PST            3.39             24         0              Normal
  11/08/2025 09 AM PST            3.39             24         0              Normal
  11/08/2025 10 AM PST            3.39             24         0              Normal
  11/08/2025 11 AM PST            3.38             23         -              Normal
  11/08/2025 12 PM PST            3.38             23         0              Normal
  11/08/2025 01 PM PST            3.38             23         0              Normal
  11/08/2025 02 PM PST            3.37             23         -              Normal
  11/08/2025 03 PM PST            3.37             23         0              Normal
  11/08/2025 04 PM PST            3.37             23         0              Normal
  11/08/2025 05 PM PST            3.37             23         0              Normal
  11/08/2025 06 PM PST            3.37             23         0              Normal
  11/08/2025 07 PM PST            3.37             23         0              Normal
  11/08/2025 08 PM PST            3.37             23         0              Normal
  11/08/2025 09 PM PST            3.37             23         0              Normal
  11/08/2025 10 PM PST            3.36             22         -              Normal
  11/08/2025 11 PM PST            3.36             22         0              Normal
  11/09/2025 12 AM PST            3.36             22         0              Normal
  11/09/2025 01 AM PST            3.36             22         0              Normal
  11/09/2025 02 AM PST            3.36             22         0              Normal
  11/09/2025 03 AM PST            3.36             22         0              Normal
  11/09/2025 04 AM PST            3.35             22         -              Normal
  11/09/2025 05 AM PST            3.35             22         0              Normal
  11/09/2025 06 AM PST            3.35             22         0              Normal
  11/09/2025 07 AM PST            3.35             22         0              Normal
  11/09/2025 08 AM PST            3.35             22         0              Normal
  11/09/2025 09 AM PST            3.35             22         0              Normal
  11/09/2025 10 AM PST            3.35             22         0              Normal
  11/09/2025 11 AM PST            3.35             22         0              Normal
  11/09/2025 12 PM PST            3.35             22         0              Normal
  11/09/2025 01 PM PST            3.35             22         0              Normal
  11/09/2025 02 PM PST            3.35             22         0              Normal
  11/09/2025 03 PM PST            3.35             22         0              Normal
  11/09/2025 04 PM PST            3.35             22         0              Normal
  11/09/2025 05 PM PST            3.34             22         -              Normal
  11/09/2025 06 PM PST            3.34             22         0              Normal
  11/09/2025 07 PM PST            3.34             22         0              Normal
  11/09/2025 08 PM PST            3.34             22         0              Normal
  11/09/2025 09 PM PST            3.34             22         0              Normal
  11/09/2025 10 PM PST            3.34             22         0              Normal
  11/09/2025 11 PM PST            3.34             22         0              Normal
  11/10/2025 12 AM PST            3.34             22         0              Normal
  11/10/2025 01 AM PST            3.34             22         0              Normal
  11/10/2025 02 AM PST            3.34             22         0              Normal
  11/10/2025 03 AM PST            3.34             22         0              Normal
  11/10/2025 04 AM PST            3.34             22         0              Normal
  11/10/2025 05 AM PST            3.34             22         0              Normal
  11/10/2025 06 AM PST            3.34             22         0              Normal
  11/10/2025 07 AM PST            3.34             22         0              Normal
  11/10/2025 08 AM PST            3.34             22         0              Normal
  11/10/2025 09 AM PST            3.33             21         -              Normal
  11/10/2025 10 AM PST            3.33             21         0              Normal
  11/10/2025 11 AM PST            3.33             21         0              Normal
  11/10/2025 12 PM PST            3.33             21         0              Normal
  11/10/2025 01 PM PST            3.33             21         0              Normal
  11/10/2025 02 PM PST            3.34             22         +              Normal
  11/10/2025 03 PM PST            3.35             22         +              Normal
  11/10/2025 04 PM PST            3.35             22         0              Normal
  11/10/2025 05 PM PST            3.35             22         0              Normal
  11/10/2025 06 PM PST            3.34             22         -              Normal
  11/10/2025 07 PM PST            3.33             21         -              Normal
  11/10/2025 08 PM PST            3.33             21         0              Normal
  11/10/2025 09 PM PST            3.33             21         0              Normal
  11/10/2025 10 PM PST            3.33             21         0              Normal
  11/10/2025 11 PM PST            3.33             21         0              Normal
  11/11/2025 12 AM PST            3.33             21         0              Normal
  11/11/2025 01 AM PST            3.33             21         0              Normal
  11/11/2025 02 AM PST            3.33             21         0              Normal
  11/11/2025 03 AM PST            3.32             21         -              Normal
  11/11/2025 04 AM PST            3.32             21         0              Normal
  11/11/2025 05 AM PST            3.32             21         0              Normal
  11/11/2025 06 AM PST            3.32             21         0              Normal
  11/11/2025 07 AM PST            3.32             21         0              Normal
  11/11/2025 08 AM PST            3.32             21         0              Normal
  11/11/2025 09 AM PST            3.33             21         +              Normal
  11/11/2025 10 AM PST            3.33             21         0              Normal
  11/11/2025 11 AM PST            3.32             21         -              Normal
  11/11/2025 12 PM PST            3.32             21         0              Normal
  11/11/2025 01 PM PST            3.32             21         0              Normal
  11/11/2025 02 PM PST            3.33             21         +              Normal
  11/11/2025 03 PM PST            3.33             21         0              Normal
  11/11/2025 04 PM PST            3.33             21         0              Normal
  11/11/2025 05 PM PST            3.33             21         0              Normal
  11/11/2025 06 PM PST            3.33             21         0              Normal
  11/11/2025 07 PM PST            3.33             21         0              Normal
  11/11/2025 08 PM PST            3.32             21         -              Normal
  11/11/2025 09 PM PST            3.32             21         0              Normal
  11/11/2025 10 PM PST            3.32             21         0              Normal
  11/11/2025 11 PM PST            3.32             21         0              Normal
  11/12/2025 12 AM PST            3.32             21         0              Normal
  11/12/2025 01 AM PST            3.32             21         0              Normal
  11/12/2025 02 AM PST            3.32             21         0              Normal
  11/12/2025 03 AM PST            3.32             21         0              Normal
  11/12/2025 04 AM PST            3.33             21         +              Normal
  11/12/2025 05 AM PST            3.33             21         0              Normal
  11/12/2025 06 AM PST            3.33             21         0              Normal
  11/12/2025 07 AM PST            3.32             21         -              Normal
  11/12/2025 08 AM PST            3.32             21         0              Normal
  11/12/2025 09 AM PST            3.33             21         +              Normal
  11/12/2025 10 AM PST            3.33             21         0              Normal
  11/12/2025 11 AM PST            3.33             21         0              Normal
  11/12/2025 12 PM PST            3.33             21         0              Normal
  11/12/2025 01 PM PST            3.33             21         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  11/12/2025 02 PM PST            3.33             21                        Normal
  11/12/2025 03 PM PST            3.34             22         +              Normal
  11/12/2025 04 PM PST            3.34             22         0              Normal
  11/12/2025 05 PM PST            3.35             22         +              Normal
  11/12/2025 06 PM PST            3.36             22         +              Normal
  11/12/2025 07 PM PST            3.37             23         +              Normal
  11/12/2025 08 PM PST            3.37             23         0              Normal
  11/12/2025 09 PM PST            3.37             23         0              Normal
  11/12/2025 10 PM PST            3.38             23         +              Normal
  11/12/2025 11 PM PST            3.40             24         +              Normal
  11/13/2025 12 AM PST            3.43             26         +              Normal
  11/13/2025 01 AM PST            3.46             27         +              Normal
  11/13/2025 02 AM PST            3.48             28         +              Normal
  11/13/2025 03 AM PST            3.49             29         +              Normal
  11/13/2025 04 AM PST            3.52             30         +              Normal
  11/13/2025 05 AM PST            3.61             35         +              Normal
  11/13/2025 06 AM PST            3.74             43         +              Normal
  11/13/2025 07 AM PST            3.92             55         +              Normal
  11/13/2025 08 AM PST            4.12             71         +              Normal
  11/13/2025 09 AM PST            4.31             89         +              Normal
  11/13/2025 10 AM PST            4.49            107         +              Normal
  11/13/2025 11 AM PST            4.66            127         +              Normal
  11/13/2025 12 PM PST            4.80            145         +              Normal
  11/13/2025 01 PM PST            4.91            159         +              Normal
  11/13/2025 02 PM PST            4.96            166         +              Normal
  11/13/2025 03 PM PST            4.94            163         -              Normal
  11/13/2025 04 PM PST            4.88            155         -              Normal
  11/13/2025 05 PM PST            4.78            142         -              Normal
  11/13/2025 06 PM PST            4.67            128         -              Normal
  11/13/2025 07 PM PST            4.55            114         -              Normal
  11/13/2025 08 PM PST            4.42            100         -              Normal
  11/13/2025 09 PM PST            4.29             87         -              Normal
  11/13/2025 10 PM PST            4.17             76         -              Normal
  11/13/2025 11 PM PST            4.07             67         -              Normal
  11/14/2025 12 AM PST            3.98             60         -              Normal
  11/14/2025 01 AM PST            3.91             55         -              Normal
  11/14/2025 02 AM PST            3.86             51         -              Normal
  11/14/2025 03 AM PST            3.82             48         -              Normal
  11/14/2025 04 AM PST            3.79             46         -              Normal
  11/14/2025 05 AM PST            3.76             44         -              Normal
  11/14/2025 06 AM PST            3.73             42         -              Normal
  11/14/2025 07 AM PST            3.71             41         -              Normal
  11/14/2025 08 AM PST            3.69             40         -              Normal
  11/14/2025 09 AM PST            3.67             39         -              Normal
  11/14/2025 10 AM PST            3.65             37         -              Normal
  11/14/2025 11 AM PST            3.63             36         -              Normal
  11/14/2025 12 PM PST            3.61             35         -              Normal
  11/14/2025 01 PM PST            3.59             34         -              Normal
  11/14/2025 02 PM PST            3.58             33         -              Normal
  11/14/2025 03 PM PST            3.56             32         -              Normal
  11/14/2025 04 PM PST            3.54             31         -              Normal
  11/14/2025 05 PM PST            3.52             30         -              Normal
  11/14/2025 06 PM PST            3.50             29         -              Normal
  11/14/2025 07 PM PST            3.48             28         -              Normal
  11/14/2025 08 PM PST            3.46             27         -              Normal
  11/14/2025 09 PM PST            3.44             26         -              Normal
  11/14/2025 10 PM PST            3.42             25         -              Normal
  11/14/2025 11 PM PST            3.40             24         -              Normal
  11/15/2025 12 AM PST            3.39             24         -              Normal
  11/15/2025 01 AM PST            3.38             23         -              Normal
  11/15/2025 02 AM PST            3.39             24         +              Normal
  11/15/2025 03 AM PST            3.40             24         +              Normal
  11/15/2025 04 AM PST            3.42             25         +              Normal
  11/15/2025 05 AM PST            3.43             26         +              Normal
  11/15/2025 06 AM PST            3.45             27         +              Normal
  11/15/2025 07 AM PST            3.46             27         +              Normal
  11/15/2025 08 AM PST            3.48             28         +              Normal
  11/15/2025 09 AM PST            3.49             29         +              Normal
  11/15/2025 10 AM PST            3.50             29         +              Normal
  11/15/2025 11 AM PST            3.51             30         +              Normal
  11/15/2025 12 PM PST            3.52             30         +              Normal
  11/15/2025 01 PM PST            3.53             31         +              Normal
  11/15/2025 02 PM PST            3.54             31         +              Normal
  11/15/2025 03 PM PST            3.56             32         +              Normal
  11/15/2025 04 PM PST            3.57             33         +              Normal
  11/15/2025 05 PM PST            3.58             33         +              Normal
  11/15/2025 06 PM PST            3.60             35         +              Normal
  11/15/2025 07 PM PST            3.61             35         +              Normal
  11/15/2025 08 PM PST            3.62             36         +              Normal
  11/15/2025 09 PM PST            3.64             37         +              Normal
  11/15/2025 10 PM PST            3.65             37         +              Normal
  11/15/2025 11 PM PST            3.66             38         +              Normal
  11/16/2025 12 AM PST            3.67             39         +              Normal
  11/16/2025 01 AM PST            3.67             39         0              Normal
  11/16/2025 02 AM PST            3.66             38         -              Normal
  11/16/2025 03 AM PST            3.63             36         -              Normal
  11/16/2025 04 AM PST            3.61             35         -              Normal
  11/16/2025 05 AM PST            3.58             33         -              Normal
  11/16/2025 06 AM PST            3.55             32         -              Normal
  11/16/2025 07 AM PST            3.53             31         -              Normal
  11/16/2025 08 AM PST            3.51             30         -              Normal
  11/16/2025 09 AM PST            3.50             29         -              Normal
  11/16/2025 10 AM PST            3.49             29         -              Normal
  11/16/2025 11 AM PST            3.48             28         -              Normal
  11/16/2025 12 PM PST            3.47             28         -              Normal
  11/16/2025 01 PM PST            3.46             27         -              Normal
  11/16/2025 02 PM PST            3.46             27         0              Normal
  11/16/2025 03 PM PST            3.46             27         0              Normal
  11/16/2025 04 PM PST            3.46             27         0              Normal
  11/16/2025 05 PM PST            3.46             27         0              Normal
  11/16/2025 06 PM PST            3.46             27         0              Normal
  11/16/2025 07 PM PST            3.46             27         0              Normal
  11/16/2025 08 PM PST            3.46             27         0              Normal
  11/16/2025 09 PM PST            3.46             27         0              Normal
  11/16/2025 10 PM PST            3.46             27         0              Normal
  11/16/2025 11 PM PST            3.46             27         0              Normal
  11/17/2025 12 AM PST            3.46             27         0              Normal
  11/17/2025 01 AM PST            3.47             28         +              Normal
  11/17/2025 02 AM PST            3.48             28         +              Normal
  11/17/2025 03 AM PST            3.50             29         +              Normal
  11/17/2025 04 AM PST            3.51             30         +              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.