MATTOLE RIVER - ETTERSBURG (ETTC1)
Latitude: 40.14º NLongitude: 123.99º WElevation: 579 FeetForecast Type: Unofficial Location
Location: Humboldt County in CaliforniaBulletin Group: North CoastRiver Group: North Coast
Issuance Time: Nov 13 2026 at 1:47 PM PSTNext Issuance: Nov 14 2026 at 9:00 AM PST
Action: N/A Minor Flood: N/A Moderate Flood: N/A Major Flood: N/A

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Mattole River - Ettersburg (ETTC1)
#
# File Generation Time:  11/13/2026 at 01:49 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  11/13/2026 at 01:00 PM PST
# Maximum Observed Stage:                       9.48 Feet
# Maximum Observed Flow:                        99 cfs
#
# Earliest Date & Time of Maximum Forecast:     11/15/2026 at 05:00 PM PST
# Maximum Forecast Stage:                       11.11 Feet
# Maximum Forecast Flow:                        440 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  11/08/2026 01 PM PST            8.41              9                Not Applicable
  11/08/2026 02 PM PST            8.41              9         0      Not Applicable
  11/08/2026 03 PM PST            8.41              9         0      Not Applicable
  11/08/2026 04 PM PST            8.41              9         0      Not Applicable
  11/08/2026 05 PM PST            8.41              9         0      Not Applicable
  11/08/2026 06 PM PST            8.41              9         0      Not Applicable
  11/08/2026 07 PM PST            8.41              9         0      Not Applicable
  11/08/2026 08 PM PST            8.41              9         0      Not Applicable
  11/08/2026 09 PM PST            8.41              9         0      Not Applicable
  11/08/2026 10 PM PST            8.41              9         0      Not Applicable
  11/08/2026 11 PM PST            8.41              9         0      Not Applicable
  11/09/2026 12 AM PST            8.41              9         0      Not Applicable
  11/09/2026 01 AM PST            8.42              9         +      Not Applicable
  11/09/2026 02 AM PST            8.42              9         0      Not Applicable
  11/09/2026 03 AM PST            8.42              9         0      Not Applicable
  11/09/2026 04 AM PST            8.42              9         0      Not Applicable
  11/09/2026 05 AM PST            8.42              9         0      Not Applicable
  11/09/2026 06 AM PST            8.42              9         0      Not Applicable
  11/09/2026 07 AM PST            8.42              9         0      Not Applicable
  11/09/2026 08 AM PST            8.42              9         0      Not Applicable
  11/09/2026 09 AM PST            8.42              9         0      Not Applicable
  11/09/2026 10 AM PST            8.42              9         0      Not Applicable
  11/09/2026 11 AM PST            8.42              9         0      Not Applicable
  11/09/2026 12 PM PST            8.42              9         0      Not Applicable
  11/09/2026 01 PM PST            8.42              9         0      Not Applicable
  11/09/2026 02 PM PST            8.42              9         0      Not Applicable
  11/09/2026 03 PM PST            8.43             10         +      Not Applicable
  11/09/2026 04 PM PST            8.43             10         0      Not Applicable
  11/09/2026 05 PM PST            8.43             10         0      Not Applicable
  11/09/2026 06 PM PST            8.43             10         0      Not Applicable
  11/09/2026 07 PM PST            8.43             10         0      Not Applicable
  11/09/2026 08 PM PST            8.43             10         0      Not Applicable
  11/09/2026 09 PM PST            8.43             10         0      Not Applicable
  11/09/2026 10 PM PST            8.43             10         0      Not Applicable
  11/09/2026 11 PM PST            8.43             10         0      Not Applicable
  11/10/2026 12 AM PST            8.43             10         0      Not Applicable
  11/10/2026 01 AM PST            8.43             10         0      Not Applicable
  11/10/2026 02 AM PST            8.44             10         +      Not Applicable
  11/10/2026 03 AM PST            8.44             10         0      Not Applicable
  11/10/2026 04 AM PST            8.44             10         0      Not Applicable
  11/10/2026 05 AM PST            8.44             10         0      Not Applicable
  11/10/2026 06 AM PST            8.45             11         +      Not Applicable
  11/10/2026 07 AM PST            8.45             11         0      Not Applicable
  11/10/2026 08 AM PST            8.46             11         +      Not Applicable
  11/10/2026 09 AM PST            8.46             11         0      Not Applicable
  11/10/2026 10 AM PST            8.46             11         0      Not Applicable
  11/10/2026 11 AM PST            8.47             12         +      Not Applicable
  11/10/2026 12 PM PST            8.47             12         0      Not Applicable
  11/10/2026 01 PM PST            8.48             12         +      Not Applicable
  11/10/2026 02 PM PST            8.48             12         0      Not Applicable
  11/10/2026 03 PM PST            8.48             12         0      Not Applicable
  11/10/2026 04 PM PST            8.48             12         0      Not Applicable
  11/10/2026 05 PM PST            8.47             12         -      Not Applicable
  11/10/2026 06 PM PST            8.47             12         0      Not Applicable
  11/10/2026 07 PM PST            8.47             12         0      Not Applicable
  11/10/2026 08 PM PST            8.47             12         0      Not Applicable
  11/10/2026 09 PM PST            8.47             12         0      Not Applicable
  11/10/2026 10 PM PST            8.47             12         0      Not Applicable
  11/10/2026 11 PM PST            8.47             12         0      Not Applicable
  11/11/2026 12 AM PST            8.47             12         0      Not Applicable
  11/11/2026 01 AM PST            8.47             12         0      Not Applicable
  11/11/2026 02 AM PST            8.47             12         0      Not Applicable
  11/11/2026 03 AM PST            8.46             11         -      Not Applicable
  11/11/2026 04 AM PST            8.46             11         0      Not Applicable
  11/11/2026 05 AM PST            8.46             11         0      Not Applicable
  11/11/2026 06 AM PST            8.46             11         0      Not Applicable
  11/11/2026 07 AM PST            8.46             11         0      Not Applicable
  11/11/2026 08 AM PST            8.46             11         0      Not Applicable
  11/11/2026 09 AM PST            8.46             11         0      Not Applicable
  11/11/2026 10 AM PST            8.46             11         0      Not Applicable
  11/11/2026 11 AM PST            8.46             11         0      Not Applicable
  11/11/2026 12 PM PST            8.46             11         0      Not Applicable
  11/11/2026 01 PM PST            8.46             11         0      Not Applicable
  11/11/2026 02 PM PST            8.46             11         0      Not Applicable
  11/11/2026 03 PM PST            8.45             11         -      Not Applicable
  11/11/2026 04 PM PST            8.45             11         0      Not Applicable
  11/11/2026 05 PM PST            8.45             11         0      Not Applicable
  11/11/2026 06 PM PST            8.45             11         0      Not Applicable
  11/11/2026 07 PM PST            8.45             11         0      Not Applicable
  11/11/2026 08 PM PST            8.45             11         0      Not Applicable
  11/11/2026 09 PM PST            8.45             11         0      Not Applicable
  11/11/2026 10 PM PST            8.45             11         0      Not Applicable
  11/11/2026 11 PM PST            8.44             10         -      Not Applicable
  11/12/2026 12 AM PST            8.44             10         0      Not Applicable
  11/12/2026 01 AM PST            8.45             11         +      Not Applicable
  11/12/2026 02 AM PST            8.44             10         -      Not Applicable
  11/12/2026 03 AM PST            8.44             10         0      Not Applicable
  11/12/2026 04 AM PST            8.44             10         0      Not Applicable
  11/12/2026 05 AM PST            8.44             10         0      Not Applicable
  11/12/2026 06 AM PST            8.44             10         0      Not Applicable
  11/12/2026 07 AM PST            8.44             10         0      Not Applicable
  11/12/2026 08 AM PST            8.44             10         0      Not Applicable
  11/12/2026 09 AM PST            8.44             10         0      Not Applicable
  11/12/2026 10 AM PST            8.44             10         0      Not Applicable
  11/12/2026 11 AM PST            8.44             10         0      Not Applicable
  11/12/2026 12 PM PST            8.44             10         0      Not Applicable
  11/12/2026 01 PM PST            8.44             10         0      Not Applicable
  11/12/2026 02 PM PST            8.44             10         0      Not Applicable
  11/12/2026 03 PM PST            8.44             10         0      Not Applicable
  11/12/2026 04 PM PST            8.44             10         0      Not Applicable
  11/12/2026 05 PM PST            8.44             10         0      Not Applicable
  11/12/2026 06 PM PST            8.44             10         0      Not Applicable
  11/12/2026 07 PM PST            8.43             10         -      Not Applicable
  11/12/2026 08 PM PST            8.44             10         +      Not Applicable
  11/12/2026 09 PM PST            8.44             10         0      Not Applicable
  11/12/2026 10 PM PST            8.44             10         0      Not Applicable
  11/12/2026 11 PM PST            8.44             10         0      Not Applicable
  11/13/2026 12 AM PST            8.44             10         0      Not Applicable
  11/13/2026 01 AM PST            8.44             10         0      Not Applicable
  11/13/2026 02 AM PST            8.46             11         +      Not Applicable
  11/13/2026 03 AM PST            8.48             12         +      Not Applicable
  11/13/2026 04 AM PST            8.49             13         +      Not Applicable
  11/13/2026 05 AM PST            8.51             14         +      Not Applicable
  11/13/2026 06 AM PST            8.58             18         +      Not Applicable
  11/13/2026 07 AM PST            8.67             23         +      Not Applicable
  11/13/2026 08 AM PST            8.81             33         +      Not Applicable
  11/13/2026 09 AM PST            9.03             53         +      Not Applicable
  11/13/2026 10 AM PST            9.17             66         +      Not Applicable
  11/13/2026 11 AM PST            9.33             81         +      Not Applicable
  11/13/2026 12 PM PST            9.40             89         +      Not Applicable
  11/13/2026 01 PM PST            9.48             99         +      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  11/13/2026 02 PM PST            9.56            110                Not Applicable
  11/13/2026 03 PM PST            9.65            124         +      Not Applicable
  11/13/2026 04 PM PST            9.76            141         +      Not Applicable
  11/13/2026 05 PM PST            9.86            158         +      Not Applicable
  11/13/2026 06 PM PST            9.92            168         +      Not Applicable
  11/13/2026 07 PM PST            9.96            175         +      Not Applicable
  11/13/2026 08 PM PST            9.96            175         0      Not Applicable
  11/13/2026 09 PM PST            9.95            173         -      Not Applicable
  11/13/2026 10 PM PST            9.92            168         -      Not Applicable
  11/13/2026 11 PM PST            9.88            161         -      Not Applicable
  11/14/2026 12 AM PST            9.84            154         -      Not Applicable
  11/14/2026 01 AM PST            9.80            148         -      Not Applicable
  11/14/2026 02 AM PST            9.75            139         -      Not Applicable
  11/14/2026 03 AM PST            9.70            132         -      Not Applicable
  11/14/2026 04 AM PST            9.65            124         -      Not Applicable
  11/14/2026 05 AM PST            9.60            116         -      Not Applicable
  11/14/2026 06 AM PST            9.55            109         -      Not Applicable
  11/14/2026 07 AM PST            9.50            102         -      Not Applicable
  11/14/2026 08 AM PST            9.44             94         -      Not Applicable
  11/14/2026 09 AM PST            9.38             87         -      Not Applicable
  11/14/2026 10 AM PST            9.32             80         -      Not Applicable
  11/14/2026 11 AM PST            9.26             74         -      Not Applicable
  11/14/2026 12 PM PST            9.20             69         -      Not Applicable
  11/14/2026 01 PM PST            9.14             63         -      Not Applicable
  11/14/2026 02 PM PST            9.09             59         -      Not Applicable
  11/14/2026 03 PM PST            9.05             55         -      Not Applicable
  11/14/2026 04 PM PST            9.02             52         -      Not Applicable
  11/14/2026 05 PM PST            8.99             49         -      Not Applicable
  11/14/2026 06 PM PST            8.97             47         -      Not Applicable
  11/14/2026 07 PM PST            8.94             45         -      Not Applicable
  11/14/2026 08 PM PST            8.92             43         -      Not Applicable
  11/14/2026 09 PM PST            8.90             41         -      Not Applicable
  11/14/2026 10 PM PST            8.89             40         -      Not Applicable
  11/14/2026 11 PM PST            8.87             38         -      Not Applicable
  11/15/2026 12 AM PST            8.86             38         -      Not Applicable
  11/15/2026 01 AM PST            8.86             38         0      Not Applicable
  11/15/2026 02 AM PST            8.85             37         -      Not Applicable
  11/15/2026 03 AM PST            8.86             38         +      Not Applicable
  11/15/2026 04 AM PST            8.90             41         +      Not Applicable
  11/15/2026 05 AM PST            9.00             50         +      Not Applicable
  11/15/2026 06 AM PST            9.18             67         +      Not Applicable
  11/15/2026 07 AM PST            9.42             92         +      Not Applicable
  11/15/2026 08 AM PST            9.63            121         +      Not Applicable
  11/15/2026 09 AM PST            9.83            153         +      Not Applicable
  11/15/2026 10 AM PST           10.04            189         +      Not Applicable
  11/15/2026 11 AM PST           10.26            231         +      Not Applicable
  11/15/2026 12 PM PST           10.49            279         +      Not Applicable
  11/15/2026 01 PM PST           10.71            329         +      Not Applicable
  11/15/2026 02 PM PST           10.91            377         +      Not Applicable
  11/15/2026 03 PM PST           11.04            416         +      Not Applicable
  11/15/2026 04 PM PST           11.10            436         +      Not Applicable
  11/15/2026 05 PM PST           11.11            440         +      Not Applicable
  11/15/2026 06 PM PST           11.07            426         -      Not Applicable
  11/15/2026 07 PM PST           11.01            406         -      Not Applicable
  11/15/2026 08 PM PST           10.91            377         -      Not Applicable
  11/15/2026 09 PM PST           10.78            346         -      Not Applicable
  11/15/2026 10 PM PST           10.65            315         -      Not Applicable
  11/15/2026 11 PM PST           10.51            284         -      Not Applicable
  11/16/2026 12 AM PST           10.37            254         -      Not Applicable
  11/16/2026 01 AM PST           10.24            227         -      Not Applicable
  11/16/2026 02 AM PST           10.12            204         -      Not Applicable
  11/16/2026 03 AM PST           10.00            182         -      Not Applicable
  11/16/2026 04 AM PST            9.90            164         -      Not Applicable
  11/16/2026 05 AM PST            9.82            151         -      Not Applicable
  11/16/2026 06 AM PST            9.77            143         -      Not Applicable
  11/16/2026 07 AM PST            9.72            135         -      Not Applicable
  11/16/2026 08 AM PST            9.70            132         -      Not Applicable
  11/16/2026 09 AM PST            9.68            128         -      Not Applicable
  11/16/2026 10 AM PST            9.66            125         -      Not Applicable
  11/16/2026 11 AM PST            9.64            122         -      Not Applicable
  11/16/2026 12 PM PST            9.62            119         -      Not Applicable
  11/16/2026 01 PM PST            9.60            116         -      Not Applicable
  11/16/2026 02 PM PST            9.57            112         -      Not Applicable
  11/16/2026 03 PM PST            9.54            108         -      Not Applicable
  11/16/2026 04 PM PST            9.51            103         -      Not Applicable
  11/16/2026 05 PM PST            9.48             99         -      Not Applicable
  11/16/2026 06 PM PST            9.46             97         -      Not Applicable
  11/16/2026 07 PM PST            9.42             92         -      Not Applicable
  11/16/2026 08 PM PST            9.39             88         -      Not Applicable
  11/16/2026 09 PM PST            9.37             86         -      Not Applicable
  11/16/2026 10 PM PST            9.34             82         -      Not Applicable
  11/16/2026 11 PM PST            9.31             79         -      Not Applicable
  11/17/2026 12 AM PST            9.29             77         -      Not Applicable
  11/17/2026 01 AM PST            9.26             74         -      Not Applicable
  11/17/2026 02 AM PST            9.24             72         -      Not Applicable
  11/17/2026 03 AM PST            9.22             70         -      Not Applicable
  11/17/2026 04 AM PST            9.21             70         -      Not Applicable
  11/17/2026 05 AM PST            9.19             68         -      Not Applicable
  11/17/2026 06 AM PST            9.18             67         -      Not Applicable
  11/17/2026 07 AM PST            9.17             66         -      Not Applicable
  11/17/2026 08 AM PST            9.15             64         -      Not Applicable
  11/17/2026 09 AM PST            9.14             63         -      Not Applicable
  11/17/2026 10 AM PST            9.13             63         -      Not Applicable
  11/17/2026 11 AM PST            9.12             62         -      Not Applicable
  11/17/2026 12 PM PST            9.12             62         0      Not Applicable
  11/17/2026 01 PM PST            9.11             61         -      Not Applicable
  11/17/2026 02 PM PST            9.10             60         -      Not Applicable
  11/17/2026 03 PM PST            9.10             60         0      Not Applicable
  11/17/2026 04 PM PST            9.09             59         -      Not Applicable
  11/17/2026 05 PM PST            9.09             59         0      Not Applicable
  11/17/2026 06 PM PST            9.08             58         -      Not Applicable
  11/17/2026 07 PM PST            9.08             58         0      Not Applicable
  11/17/2026 08 PM PST            9.07             57         -      Not Applicable
  11/17/2026 09 PM PST            9.07             57         0      Not Applicable
  11/17/2026 10 PM PST            9.08             58         +      Not Applicable
  11/17/2026 11 PM PST            9.10             60         +      Not Applicable
  11/18/2026 12 AM PST            9.16             65         +      Not Applicable
  11/18/2026 01 AM PST            9.26             74         +      Not Applicable
  11/18/2026 02 AM PST            9.38             87         +      Not Applicable
  11/18/2026 03 AM PST            9.52            105         +      Not Applicable
  11/18/2026 04 AM PST            9.71            133         +      Not Applicable
#
# 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.