National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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LAGUNA DE SANTA ROSA - SEBASTOPOL (LSEC1)
Latitude: 38.43º NLongitude: 122.83º WElevation: 50 FeetForecast Type: Unofficial Location
Location: Sonoma County in CaliforniaBulletin Group: Russian NapaRiver Group: Russian Napa
Issuance Time: Mar 18 2026 at 12:50 PM PDTNext Issuance: Mar 19 2026 at 9:00 AM PDT
Action/Monitor: 67.0 FeetMinor Flood: 69.0 FeetModerate Flood: N/A Major Flood: N/A
Please Note:

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Laguna De Santa Rosa - Sebastopol (LSEC1)
#
# File Generation Time:  03/18/2026 at 12:51 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  03/13/2026 at 01:00 PM PDT
# Maximum Observed Stage:                       57.10 Feet
# Maximum Observed Flow:                        27 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/18/2026 at 01:00 PM PDT
# Maximum Forecast Stage:                       56.85 Feet
# Maximum Forecast Flow:                        20 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  03/13/2026 12 PM PDT           57.10             27                        Normal
  03/13/2026 01 PM PDT           57.10             27         0              Normal
  03/13/2026 02 PM PDT           57.09             27         -              Normal
  03/13/2026 03 PM PDT           57.09             27         0              Normal
  03/13/2026 04 PM PDT           57.09             27         0              Normal
  03/13/2026 05 PM PDT           57.09             27         0              Normal
  03/13/2026 06 PM PDT           57.08             26         -              Normal
  03/13/2026 07 PM PDT           57.08             26         0              Normal
  03/13/2026 08 PM PDT           57.08             26         0              Normal
  03/13/2026 09 PM PDT           57.08             26         0              Normal
  03/13/2026 10 PM PDT           57.07             26         -              Normal
  03/13/2026 11 PM PDT           57.07             26         0              Normal
  03/14/2026 12 AM PDT           57.07             26         0              Normal
  03/14/2026 01 AM PDT           57.06             26         -              Normal
  03/14/2026 02 AM PDT           57.06             26         0              Normal
  03/14/2026 03 AM PDT           57.06             26         0              Normal
  03/14/2026 04 AM PDT           57.06             26         0              Normal
  03/14/2026 05 AM PDT           57.05             25         -              Normal
  03/14/2026 06 AM PDT           57.05             25         0              Normal
  03/14/2026 07 AM PDT           57.05             25         0              Normal
  03/14/2026 08 AM PDT           57.05             25         0              Normal
  03/14/2026 09 AM PDT           57.05             25         0              Normal
  03/14/2026 10 AM PDT           57.05             25         0              Normal
  03/14/2026 11 AM PDT           57.04             25         -              Normal
  03/14/2026 12 PM PDT           57.04             25         0              Normal
  03/14/2026 01 PM PDT           57.04             25         0              Normal
  03/14/2026 02 PM PDT           57.04             25         0              Normal
  03/14/2026 03 PM PDT           57.04             25         0              Normal
  03/14/2026 04 PM PDT           57.03             25         -              Normal
  03/14/2026 05 PM PDT           57.03             25         0              Normal
  03/14/2026 06 PM PDT           57.03             25         0              Normal
  03/14/2026 07 PM PDT           57.03             25         0              Normal
  03/14/2026 08 PM PDT           57.02             24         -              Normal
  03/14/2026 09 PM PDT           57.02             24         0              Normal
  03/14/2026 10 PM PDT           57.02             24         0              Normal
  03/14/2026 11 PM PDT           57.02             24         0              Normal
  03/15/2026 12 AM PDT           57.01             24         -              Normal
  03/15/2026 01 AM PDT           57.01             24         0              Normal
  03/15/2026 02 AM PDT           57.01             24         0              Normal
  03/15/2026 03 AM PDT           57.01             24         0              Normal
  03/15/2026 04 AM PDT           57.00             24         -              Normal
  03/15/2026 05 AM PDT           57.00             24         0              Normal
  03/15/2026 06 AM PDT           57.00             24         0              Normal
  03/15/2026 07 AM PDT           57.00             24         0              Normal
  03/15/2026 08 AM PDT           57.00             24         0              Normal
  03/15/2026 09 AM PDT           57.00             24         0              Normal
  03/15/2026 10 AM PDT           57.00             24         0              Normal
  03/15/2026 11 AM PDT           56.99             24         -              Normal
  03/15/2026 12 PM PDT           56.99             24         0              Normal
  03/15/2026 01 PM PDT           56.99             24         0              Normal
  03/15/2026 02 PM PDT           56.99             24         0              Normal
  03/15/2026 03 PM PDT           56.99             24         0              Normal
  03/15/2026 04 PM PDT           56.99             24         0              Normal
  03/15/2026 05 PM PDT           56.98             23         -              Normal
  03/15/2026 06 PM PDT           56.98             23         0              Normal
  03/15/2026 07 PM PDT           56.98             23         0              Normal
  03/15/2026 08 PM PDT           56.98             23         0              Normal
  03/15/2026 09 PM PDT           56.98             23         0              Normal
  03/15/2026 10 PM PDT           56.97             23         -              Normal
  03/15/2026 11 PM PDT           56.97             23         0              Normal
  03/16/2026 12 AM PDT           56.97             23         0              Normal
  03/16/2026 01 AM PDT           56.96             23         -              Normal
  03/16/2026 02 AM PDT           56.96             23         0              Normal
  03/16/2026 03 AM PDT           56.96             23         0              Normal
  03/16/2026 04 AM PDT           56.96             23         0              Normal
  03/16/2026 05 AM PDT           56.96             23         0              Normal
  03/16/2026 06 AM PDT           56.96             23         0              Normal
  03/16/2026 07 AM PDT           56.95             22         -              Normal
  03/16/2026 08 AM PDT           56.95             22         0              Normal
  03/16/2026 09 AM PDT           56.95             22         0              Normal
  03/16/2026 10 AM PDT           56.95             22         0              Normal
  03/16/2026 11 AM PDT           56.95             22         0              Normal
  03/16/2026 12 PM PDT           56.95             22         0              Normal
  03/16/2026 01 PM PDT           56.95             22         0              Normal
  03/16/2026 02 PM PDT           56.94             22         -              Normal
  03/16/2026 03 PM PDT           56.94             22         0              Normal
  03/16/2026 04 PM PDT           56.94             22         0              Normal
  03/16/2026 05 PM PDT           56.94             22         0              Normal
  03/16/2026 06 PM PDT           56.94             22         0              Normal
  03/16/2026 07 PM PDT           56.94             22         0              Normal
  03/16/2026 08 PM PDT           56.93             22         -              Normal
  03/16/2026 09 PM PDT           56.93             22         0              Normal
  03/16/2026 10 PM PDT           56.93             22         0              Normal
  03/16/2026 11 PM PDT           56.92             22         -              Normal
  03/17/2026 12 AM PDT           56.92             22         0              Normal
  03/17/2026 01 AM PDT           56.92             22         0              Normal
  03/17/2026 02 AM PDT           56.92             22         0              Normal
  03/17/2026 03 AM PDT           56.92             22         0              Normal
  03/17/2026 04 AM PDT           56.91             21         -              Normal
  03/17/2026 05 AM PDT           56.91             21         0              Normal
  03/17/2026 06 AM PDT           56.91             21         0              Normal
  03/17/2026 07 AM PDT           56.91             21         0              Normal
  03/17/2026 08 AM PDT           56.91             21         0              Normal
  03/17/2026 09 AM PDT           56.91             21         0              Normal
  03/17/2026 10 AM PDT           56.91             21         0              Normal
  03/17/2026 11 AM PDT           56.91             21         0              Normal
  03/17/2026 12 PM PDT           56.90             21         -              Normal
  03/17/2026 01 PM PDT           56.90             21         0              Normal
  03/17/2026 02 PM PDT           56.90             21         0              Normal
  03/17/2026 03 PM PDT           56.90             21         0              Normal
  03/17/2026 04 PM PDT           56.90             21         0              Normal
  03/17/2026 05 PM PDT           56.90             21         0              Normal
  03/17/2026 06 PM PDT           56.90             21         0              Normal
  03/17/2026 07 PM PDT           56.90             21         0              Normal
  03/17/2026 08 PM PDT           56.89             21         -              Normal
  03/17/2026 09 PM PDT           56.89             21         0              Normal
  03/17/2026 10 PM PDT           56.89             21         0              Normal
  03/17/2026 11 PM PDT           56.88             21         -              Normal
  03/18/2026 12 AM PDT           56.88             21         0              Normal
  03/18/2026 01 AM PDT           56.88             21         0              Normal
  03/18/2026 02 AM PDT           56.88             21         0              Normal
  03/18/2026 03 AM PDT           56.88             21         0              Normal
  03/18/2026 04 AM PDT           56.87             20         -              Normal
  03/18/2026 05 AM PDT           56.87             20         0              Normal
  03/18/2026 06 AM PDT           56.87             20         0              Normal
  03/18/2026 07 AM PDT           56.87             20         0              Normal
  03/18/2026 08 AM PDT           56.87             20         0              Normal
  03/18/2026 09 AM PDT           56.87             20         0              Normal
  03/18/2026 10 AM PDT           56.87             20         0              Normal
  03/18/2026 11 AM PDT           56.86             20         -              Normal
  03/18/2026 12 PM PDT           56.86             20         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/18/2026 01 PM PDT           56.85             20                        Normal
  03/18/2026 02 PM PDT           56.85             20         0              Normal
  03/18/2026 03 PM PDT           56.85             20         0              Normal
  03/18/2026 04 PM PDT           56.85             20         0              Normal
  03/18/2026 05 PM PDT           56.84             20         -              Normal
  03/18/2026 06 PM PDT           56.84             20         0              Normal
  03/18/2026 07 PM PDT           56.84             20         0              Normal
  03/18/2026 08 PM PDT           56.84             20         0              Normal
  03/18/2026 09 PM PDT           56.84             20         0              Normal
  03/18/2026 10 PM PDT           56.83             19         -              Normal
  03/18/2026 11 PM PDT           56.83             19         0              Normal
  03/19/2026 12 AM PDT           56.83             19         0              Normal
  03/19/2026 01 AM PDT           56.83             19         0              Normal
  03/19/2026 02 AM PDT           56.83             19         0              Normal
  03/19/2026 03 AM PDT           56.83             19         0              Normal
  03/19/2026 04 AM PDT           56.82             19         -              Normal
  03/19/2026 05 AM PDT           56.82             19         0              Normal
  03/19/2026 06 AM PDT           56.82             19         0              Normal
  03/19/2026 07 AM PDT           56.82             19         0              Normal
  03/19/2026 08 AM PDT           56.82             19         0              Normal
  03/19/2026 09 AM PDT           56.81             19         -              Normal
  03/19/2026 10 AM PDT           56.81             19         0              Normal
  03/19/2026 11 AM PDT           56.81             19         0              Normal
  03/19/2026 12 PM PDT           56.81             19         0              Normal
  03/19/2026 01 PM PDT           56.81             19         0              Normal
  03/19/2026 02 PM PDT           56.80             19         -              Normal
  03/19/2026 03 PM PDT           56.80             19         0              Normal
  03/19/2026 04 PM PDT           56.80             19         0              Normal
  03/19/2026 05 PM PDT           56.80             19         0              Normal
  03/19/2026 06 PM PDT           56.80             19         0              Normal
  03/19/2026 07 PM PDT           56.80             19         0              Normal
  03/19/2026 08 PM PDT           56.79             18         -              Normal
  03/19/2026 09 PM PDT           56.79             18         0              Normal
  03/19/2026 10 PM PDT           56.79             18         0              Normal
  03/19/2026 11 PM PDT           56.79             18         0              Normal
  03/20/2026 12 AM PDT           56.79             18         0              Normal
  03/20/2026 01 AM PDT           56.79             18         0              Normal
  03/20/2026 02 AM PDT           56.78             18         -              Normal
  03/20/2026 03 AM PDT           56.78             18         0              Normal
  03/20/2026 04 AM PDT           56.78             18         0              Normal
  03/20/2026 05 AM PDT           56.78             18         0              Normal
  03/20/2026 06 AM PDT           56.78             18         0              Normal
  03/20/2026 07 AM PDT           56.78             18         0              Normal
  03/20/2026 08 AM PDT           56.77             18         -              Normal
  03/20/2026 09 AM PDT           56.77             18         0              Normal
  03/20/2026 10 AM PDT           56.77             18         0              Normal
  03/20/2026 11 AM PDT           56.77             18         0              Normal
  03/20/2026 12 PM PDT           56.77             18         0              Normal
  03/20/2026 01 PM PDT           56.77             18         0              Normal
  03/20/2026 02 PM PDT           56.77             18         0              Normal
  03/20/2026 03 PM PDT           56.76             18         -              Normal
  03/20/2026 04 PM PDT           56.76             18         0              Normal
  03/20/2026 05 PM PDT           56.76             18         0              Normal
  03/20/2026 06 PM PDT           56.76             18         0              Normal
  03/20/2026 07 PM PDT           56.76             18         0              Normal
  03/20/2026 08 PM PDT           56.76             18         0              Normal
  03/20/2026 09 PM PDT           56.75             18         -              Normal
  03/20/2026 10 PM PDT           56.75             18         0              Normal
  03/20/2026 11 PM PDT           56.75             18         0              Normal
  03/21/2026 12 AM PDT           56.75             18         0              Normal
  03/21/2026 01 AM PDT           56.75             18         0              Normal
  03/21/2026 02 AM PDT           56.74             17         -              Normal
  03/21/2026 03 AM PDT           56.74             17         0              Normal
  03/21/2026 04 AM PDT           56.74             17         0              Normal
  03/21/2026 05 AM PDT           56.74             17         0              Normal
  03/21/2026 06 AM PDT           56.74             17         0              Normal
  03/21/2026 07 AM PDT           56.74             17         0              Normal
  03/21/2026 08 AM PDT           56.73             17         -              Normal
  03/21/2026 09 AM PDT           56.73             17         0              Normal
  03/21/2026 10 AM PDT           56.73             17         0              Normal
  03/21/2026 11 AM PDT           56.73             17         0              Normal
  03/21/2026 12 PM PDT           56.73             17         0              Normal
  03/21/2026 01 PM PDT           56.73             17         0              Normal
  03/21/2026 02 PM PDT           56.73             17         0              Normal
  03/21/2026 03 PM PDT           56.72             17         -              Normal
  03/21/2026 04 PM PDT           56.72             17         0              Normal
  03/21/2026 05 PM PDT           56.72             17         0              Normal
  03/21/2026 06 PM PDT           56.72             17         0              Normal
  03/21/2026 07 PM PDT           56.72             17         0              Normal
  03/21/2026 08 PM PDT           56.72             17         0              Normal
  03/21/2026 09 PM PDT           56.71             17         -              Normal
  03/21/2026 10 PM PDT           56.71             17         0              Normal
  03/21/2026 11 PM PDT           56.71             17         0              Normal
  03/22/2026 12 AM PDT           56.71             17         0              Normal
  03/22/2026 01 AM PDT           56.71             17         0              Normal
  03/22/2026 02 AM PDT           56.71             17         0              Normal
  03/22/2026 03 AM PDT           56.70             17         -              Normal
  03/22/2026 04 AM PDT           56.70             17         0              Normal
  03/22/2026 05 AM PDT           56.70             17         0              Normal
  03/22/2026 06 AM PDT           56.70             17         0              Normal
  03/22/2026 07 AM PDT           56.70             17         0              Normal
  03/22/2026 08 AM PDT           56.70             17         0              Normal
  03/22/2026 09 AM PDT           56.69             16         -              Normal
  03/22/2026 10 AM PDT           56.69             16         0              Normal
  03/22/2026 11 AM PDT           56.69             16         0              Normal
  03/22/2026 12 PM PDT           56.69             16         0              Normal
  03/22/2026 01 PM PDT           56.69             16         0              Normal
  03/22/2026 02 PM PDT           56.69             16         0              Normal
  03/22/2026 03 PM PDT           56.68             16         -              Normal
  03/22/2026 04 PM PDT           56.68             16         0              Normal
  03/22/2026 05 PM PDT           56.68             16         0              Normal
  03/22/2026 06 PM PDT           56.68             16         0              Normal
  03/22/2026 07 PM PDT           56.68             16         0              Normal
  03/22/2026 08 PM PDT           56.68             16         0              Normal
  03/22/2026 09 PM PDT           56.67             16         -              Normal
  03/22/2026 10 PM PDT           56.67             16         0              Normal
  03/22/2026 11 PM PDT           56.67             16         0              Normal
  03/23/2026 12 AM PDT           56.67             16         0              Normal
  03/23/2026 01 AM PDT           56.67             16         0              Normal
  03/23/2026 02 AM PDT           56.67             16         0              Normal
  03/23/2026 03 AM PDT           56.66             16         -              Normal
  03/23/2026 04 AM PDT           56.66             16         0              Normal
  03/23/2026 05 AM PDT           56.66             16         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.