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 Feet
Location: Sonoma County in CaliforniaBulletin Group: Russian NapaRiver Group: Russian Napa
Issuance Time: Jan 21 2026 at 2:26 PM PSTNext Issuance: Jan 22 2026 at 9:00 AM PST
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:  01/21/2026 at 02:28 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  01/16/2026 at 03:00 PM PST
# Maximum Observed Stage:                       57.84 Feet
# Maximum Observed Flow:                        56 cfs
#
# Earliest Date & Time of Maximum Forecast:     01/21/2026 at 03:00 PM PST
# Maximum Forecast Stage:                       57.36 Feet
# Maximum Forecast Flow:                        35 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  01/16/2026 02 PM PST           57.84             56                        Normal
  01/16/2026 03 PM PST           57.84             56         0              Normal
  01/16/2026 04 PM PST           57.83             56         -              Normal
  01/16/2026 05 PM PST           57.82             55         -              Normal
  01/16/2026 06 PM PST           57.82             55         0              Normal
  01/16/2026 07 PM PST           57.81             55         -              Normal
  01/16/2026 08 PM PST           57.81             55         0              Normal
  01/16/2026 09 PM PST           57.80             54         -              Normal
  01/16/2026 10 PM PST           57.79             54         -              Normal
  01/16/2026 11 PM PST           57.79             54         0              Normal
  01/17/2026 12 AM PST           57.78             53         -              Normal
  01/17/2026 01 AM PST           57.78             53         0              Normal
  01/17/2026 02 AM PST           57.77             53         -              Normal
  01/17/2026 03 AM PST           57.77             53         0              Normal
  01/17/2026 04 AM PST           57.76             52         -              Normal
  01/17/2026 05 AM PST           57.76             52         0              Normal
  01/17/2026 06 AM PST           57.75             52         -              Normal
  01/17/2026 07 AM PST           57.75             52         0              Normal
  01/17/2026 08 AM PST           57.74             51         -              Normal
  01/17/2026 09 AM PST           57.74             51         0              Normal
  01/17/2026 10 AM PST           57.73             51         -              Normal
  01/17/2026 11 AM PST           57.73             51         0              Normal
  01/17/2026 12 PM PST           57.73             51         0              Normal
  01/17/2026 01 PM PST           57.72             50         -              Normal
  01/17/2026 02 PM PST           57.72             50         0              Normal
  01/17/2026 03 PM PST           57.71             50         -              Normal
  01/17/2026 04 PM PST           57.71             50         0              Normal
  01/17/2026 05 PM PST           57.70             50         -              Normal
  01/17/2026 06 PM PST           57.70             50         0              Normal
  01/17/2026 07 PM PST           57.70             50         0              Normal
  01/17/2026 08 PM PST           57.69             49         -              Normal
  01/17/2026 09 PM PST           57.68             49         -              Normal
  01/17/2026 10 PM PST           57.68             49         0              Normal
  01/17/2026 11 PM PST           57.67             48         -              Normal
  01/18/2026 12 AM PST           57.67             48         0              Normal
  01/18/2026 01 AM PST           57.67             48         0              Normal
  01/18/2026 02 AM PST           57.66             48         -              Normal
  01/18/2026 03 AM PST           57.66             48         0              Normal
  01/18/2026 04 AM PST           57.65             47         -              Normal
  01/18/2026 05 AM PST           57.65             47         0              Normal
  01/18/2026 06 AM PST           57.64             47         -              Normal
  01/18/2026 07 AM PST           57.64             47         0              Normal
  01/18/2026 08 AM PST           57.63             46         -              Normal
  01/18/2026 09 AM PST           57.63             46         0              Normal
  01/18/2026 10 AM PST           57.63             46         0              Normal
  01/18/2026 11 AM PST           57.62             46         -              Normal
  01/18/2026 12 PM PST           57.62             46         0              Normal
  01/18/2026 01 PM PST           57.61             45         -              Normal
  01/18/2026 02 PM PST           57.61             45         0              Normal
  01/18/2026 03 PM PST           57.61             45         0              Normal
  01/18/2026 04 PM PST           57.60             45         -              Normal
  01/18/2026 05 PM PST           57.60             45         0              Normal
  01/18/2026 06 PM PST           57.60             45         0              Normal
  01/18/2026 07 PM PST           57.59             44         -              Normal
  01/18/2026 08 PM PST           57.59             44         0              Normal
  01/18/2026 09 PM PST           57.58             44         -              Normal
  01/18/2026 10 PM PST           57.58             44         0              Normal
  01/18/2026 11 PM PST           57.57             44         -              Normal
  01/19/2026 12 AM PST           57.57             44         0              Normal
  01/19/2026 01 AM PST           57.56             43         -              Normal
  01/19/2026 02 AM PST           57.56             43         0              Normal
  01/19/2026 03 AM PST           57.56             43         0              Normal
  01/19/2026 04 AM PST           57.55             43         -              Normal
  01/19/2026 05 AM PST           57.55             43         0              Normal
  01/19/2026 06 AM PST           57.54             42         -              Normal
  01/19/2026 07 AM PST           57.54             42         0              Normal
  01/19/2026 08 AM PST           57.54             42         0              Normal
  01/19/2026 09 AM PST           57.53             42         -              Normal
  01/19/2026 10 AM PST           57.53             42         0              Normal
  01/19/2026 11 AM PST           57.53             42         0              Normal
  01/19/2026 12 PM PST           57.52             42         -              Normal
  01/19/2026 01 PM PST           57.52             42         0              Normal
  01/19/2026 02 PM PST           57.52             42         0              Normal
  01/19/2026 03 PM PST           57.51             41         -              Normal
  01/19/2026 04 PM PST           57.51             41         0              Normal
  01/19/2026 05 PM PST           57.51             41         0              Normal
  01/19/2026 06 PM PST           57.50             41         -              Normal
  01/19/2026 07 PM PST           57.50             41         0              Normal
  01/19/2026 08 PM PST           57.49             40         -              Normal
  01/19/2026 09 PM PST           57.49             40         0              Normal
  01/19/2026 10 PM PST           57.49             40         0              Normal
  01/19/2026 11 PM PST           57.48             40         -              Normal
  01/20/2026 12 AM PST           57.48             40         0              Normal
  01/20/2026 01 AM PST           57.47             40         -              Normal
  01/20/2026 02 AM PST           57.47             40         0              Normal
  01/20/2026 03 AM PST           57.47             40         0              Normal
  01/20/2026 04 AM PST           57.46             39         -              Normal
  01/20/2026 05 AM PST           57.46             39         0              Normal
  01/20/2026 06 AM PST           57.46             39         0              Normal
  01/20/2026 07 AM PST           57.45             39         -              Normal
  01/20/2026 08 AM PST           57.45             39         0              Normal
  01/20/2026 09 AM PST           57.45             39         0              Normal
  01/20/2026 10 AM PST           57.44             38         -              Normal
  01/20/2026 11 AM PST           57.44             38         0              Normal
  01/20/2026 12 PM PST           57.44             38         0              Normal
  01/20/2026 01 PM PST           57.44             38         0              Normal
  01/20/2026 02 PM PST           57.43             38         -              Normal
  01/20/2026 03 PM PST           57.43             38         0              Normal
  01/20/2026 04 PM PST           57.43             38         0              Normal
  01/20/2026 05 PM PST           57.42             38         -              Normal
  01/20/2026 06 PM PST           57.42             38         0              Normal
  01/20/2026 07 PM PST           57.42             38         0              Normal
  01/20/2026 08 PM PST           57.42             38         0              Normal
  01/20/2026 09 PM PST           57.41             37         -              Normal
  01/20/2026 10 PM PST           57.41             37         0              Normal
  01/20/2026 11 PM PST           57.41             37         0              Normal
  01/21/2026 12 AM PST           57.40             37         -              Normal
  01/21/2026 01 AM PST           57.40             37         0              Normal
  01/21/2026 02 AM PST           57.40             37         0              Normal
  01/21/2026 03 AM PST           57.39             36         -              Normal
  01/21/2026 04 AM PST           57.39             36         0              Normal
  01/21/2026 05 AM PST           57.39             36         0              Normal
  01/21/2026 06 AM PST           57.39             36         0              Normal
  01/21/2026 07 AM PST           57.38             36         -              Normal
  01/21/2026 08 AM PST           57.38             36         0              Normal
  01/21/2026 09 AM PST           57.38             36         0              Normal
  01/21/2026 10 AM PST           57.37             36         -              Normal
  01/21/2026 11 AM PST           57.37             36         0              Normal
  01/21/2026 12 PM PST           57.37             36         0              Normal
  01/21/2026 01 PM PST           57.37             36         0              Normal
  01/21/2026 02 PM PST           57.37             36         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  01/21/2026 03 PM PST           57.36             35                        Normal
  01/21/2026 04 PM PST           57.36             35         0              Normal
  01/21/2026 05 PM PST           57.36             35         0              Normal
  01/21/2026 06 PM PST           57.35             35         -              Normal
  01/21/2026 07 PM PST           57.35             35         0              Normal
  01/21/2026 08 PM PST           57.35             35         0              Normal
  01/21/2026 09 PM PST           57.35             35         0              Normal
  01/21/2026 10 PM PST           57.34             35         -              Normal
  01/21/2026 11 PM PST           57.34             35         0              Normal
  01/22/2026 12 AM PST           57.34             35         0              Normal
  01/22/2026 01 AM PST           57.34             35         0              Normal
  01/22/2026 02 AM PST           57.33             34         -              Normal
  01/22/2026 03 AM PST           57.33             34         0              Normal
  01/22/2026 04 AM PST           57.33             34         0              Normal
  01/22/2026 05 AM PST           57.33             34         0              Normal
  01/22/2026 06 AM PST           57.33             34         0              Normal
  01/22/2026 07 AM PST           57.32             34         -              Normal
  01/22/2026 08 AM PST           57.32             34         0              Normal
  01/22/2026 09 AM PST           57.32             34         0              Normal
  01/22/2026 10 AM PST           57.31             33         -              Normal
  01/22/2026 11 AM PST           57.31             33         0              Normal
  01/22/2026 12 PM PST           57.31             33         0              Normal
  01/22/2026 01 PM PST           57.31             33         0              Normal
  01/22/2026 02 PM PST           57.30             33         -              Normal
  01/22/2026 03 PM PST           57.30             33         0              Normal
  01/22/2026 04 PM PST           57.30             33         0              Normal
  01/22/2026 05 PM PST           57.30             33         0              Normal
  01/22/2026 06 PM PST           57.30             33         0              Normal
  01/22/2026 07 PM PST           57.29             33         -              Normal
  01/22/2026 08 PM PST           57.29             33         0              Normal
  01/22/2026 09 PM PST           57.29             33         0              Normal
  01/22/2026 10 PM PST           57.29             33         0              Normal
  01/22/2026 11 PM PST           57.28             32         -              Normal
  01/23/2026 12 AM PST           57.28             32         0              Normal
  01/23/2026 01 AM PST           57.28             32         0              Normal
  01/23/2026 02 AM PST           57.28             32         0              Normal
  01/23/2026 03 AM PST           57.28             32         0              Normal
  01/23/2026 04 AM PST           57.27             32         -              Normal
  01/23/2026 05 AM PST           57.27             32         0              Normal
  01/23/2026 06 AM PST           57.27             32         0              Normal
  01/23/2026 07 AM PST           57.27             32         0              Normal
  01/23/2026 08 AM PST           57.27             32         0              Normal
  01/23/2026 09 AM PST           57.26             32         -              Normal
  01/23/2026 10 AM PST           57.26             32         0              Normal
  01/23/2026 11 AM PST           57.26             32         0              Normal
  01/23/2026 12 PM PST           57.26             32         0              Normal
  01/23/2026 01 PM PST           57.25             31         -              Normal
  01/23/2026 02 PM PST           57.25             31         0              Normal
  01/23/2026 03 PM PST           57.25             31         0              Normal
  01/23/2026 04 PM PST           57.25             31         0              Normal
  01/23/2026 05 PM PST           57.25             31         0              Normal
  01/23/2026 06 PM PST           57.24             31         -              Normal
  01/23/2026 07 PM PST           57.24             31         0              Normal
  01/23/2026 08 PM PST           57.24             31         0              Normal
  01/23/2026 09 PM PST           57.24             31         0              Normal
  01/23/2026 10 PM PST           57.24             31         0              Normal
  01/23/2026 11 PM PST           57.23             31         -              Normal
  01/24/2026 12 AM PST           57.23             31         0              Normal
  01/24/2026 01 AM PST           57.23             31         0              Normal
  01/24/2026 02 AM PST           57.23             31         0              Normal
  01/24/2026 03 AM PST           57.23             31         0              Normal
  01/24/2026 04 AM PST           57.23             31         0              Normal
  01/24/2026 05 AM PST           57.22             30         -              Normal
  01/24/2026 06 AM PST           57.22             30         0              Normal
  01/24/2026 07 AM PST           57.22             30         0              Normal
  01/24/2026 08 AM PST           57.22             30         0              Normal
  01/24/2026 09 AM PST           57.22             30         0              Normal
  01/24/2026 10 AM PST           57.21             30         -              Normal
  01/24/2026 11 AM PST           57.21             30         0              Normal
  01/24/2026 12 PM PST           57.21             30         0              Normal
  01/24/2026 01 PM PST           57.21             30         0              Normal
  01/24/2026 02 PM PST           57.21             30         0              Normal
  01/24/2026 03 PM PST           57.20             30         -              Normal
  01/24/2026 04 PM PST           57.20             30         0              Normal
  01/24/2026 05 PM PST           57.20             30         0              Normal
  01/24/2026 06 PM PST           57.20             30         0              Normal
  01/24/2026 07 PM PST           57.20             30         0              Normal
  01/24/2026 08 PM PST           57.20             30         0              Normal
  01/24/2026 09 PM PST           57.19             30         -              Normal
  01/24/2026 10 PM PST           57.19             30         0              Normal
  01/24/2026 11 PM PST           57.19             30         0              Normal
  01/25/2026 12 AM PST           57.19             30         0              Normal
  01/25/2026 01 AM PST           57.19             30         0              Normal
  01/25/2026 02 AM PST           57.19             30         0              Normal
  01/25/2026 03 AM PST           57.18             29         -              Normal
  01/25/2026 04 AM PST           57.18             29         0              Normal
  01/25/2026 05 AM PST           57.18             29         0              Normal
  01/25/2026 06 AM PST           57.18             29         0              Normal
  01/25/2026 07 AM PST           57.18             29         0              Normal
  01/25/2026 08 AM PST           57.18             29         0              Normal
  01/25/2026 09 AM PST           57.17             29         -              Normal
  01/25/2026 10 AM PST           57.17             29         0              Normal
  01/25/2026 11 AM PST           57.17             29         0              Normal
  01/25/2026 12 PM PST           57.17             29         0              Normal
  01/25/2026 01 PM PST           57.17             29         0              Normal
  01/25/2026 02 PM PST           57.17             29         0              Normal
  01/25/2026 03 PM PST           57.16             29         -              Normal
  01/25/2026 04 PM PST           57.16             29         0              Normal
  01/25/2026 05 PM PST           57.16             29         0              Normal
  01/25/2026 06 PM PST           57.16             29         0              Normal
  01/25/2026 07 PM PST           57.16             29         0              Normal
  01/25/2026 08 PM PST           57.16             29         0              Normal
  01/25/2026 09 PM PST           57.16             29         0              Normal
  01/25/2026 10 PM PST           57.16             29         0              Normal
  01/25/2026 11 PM PST           57.15             28         -              Normal
  01/26/2026 12 AM PST           57.15             28         0              Normal
  01/26/2026 01 AM PST           57.15             28         0              Normal
  01/26/2026 02 AM PST           57.15             28         0              Normal
  01/26/2026 03 AM PST           57.15             28         0              Normal
  01/26/2026 04 AM PST           57.15             28         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.