MATTOLE RIVER - ETTERSBURG (ETTC1)
Latitude: 40.14º NLongitude: 123.99º WElevation: 579 Feet
Location: Humboldt County in CaliforniaBulletin Group: North CoastRiver Group: North Coast
Issuance Time: Feb 03 2026 at 1:21 PM PSTNext Issuance: Feb 04 2026 at 9:00 AM PST
Action/Monitor: 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:  02/03/2026 at 01:23 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  01/29/2026 at 05:00 PM PST
# Maximum Observed Stage:                       9.80 Feet
# Maximum Observed Flow:                        100 cfs
#
# Earliest Date & Time of Maximum Forecast:     02/03/2026 at 02:00 PM PST
# Maximum Forecast Stage:                       9.59 Feet
# Maximum Forecast Flow:                        70 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  01/29/2026 01 PM PST            9.80            100                Not Applicable
  01/29/2026 02 PM PST            9.80            100         0      Not Applicable
  01/29/2026 03 PM PST            9.80            100         0      Not Applicable
  01/29/2026 04 PM PST            9.80            100         0      Not Applicable
  01/29/2026 05 PM PST            9.80            100         0      Not Applicable
  01/29/2026 06 PM PST            9.79             98         -      Not Applicable
  01/29/2026 07 PM PST            9.79             98         0      Not Applicable
  01/29/2026 08 PM PST            9.79             98         0      Not Applicable
  01/29/2026 09 PM PST            9.78             96         -      Not Applicable
  01/29/2026 10 PM PST            9.78             96         0      Not Applicable
  01/29/2026 11 PM PST            9.78             96         0      Not Applicable
  01/30/2026 12 AM PST            9.77             95         -      Not Applicable
  01/30/2026 01 AM PST            9.77             95         0      Not Applicable
  01/30/2026 02 AM PST            9.77             95         0      Not Applicable
  01/30/2026 03 AM PST            9.77             95         0      Not Applicable
  01/30/2026 04 AM PST            9.76             93         -      Not Applicable
  01/30/2026 05 AM PST            9.76             93         0      Not Applicable
  01/30/2026 06 AM PST            9.76             93         0      Not Applicable
  01/30/2026 07 AM PST            9.76             93         0      Not Applicable
  01/30/2026 08 AM PST            9.76             93         0      Not Applicable
  01/30/2026 09 AM PST            9.75             92         -      Not Applicable
  01/30/2026 10 AM PST            9.75             92         0      Not Applicable
  01/30/2026 11 AM PST            9.75             92         0      Not Applicable
  01/30/2026 12 PM PST            9.75             92         0      Not Applicable
  01/30/2026 01 PM PST            9.75             92         0      Not Applicable
  01/30/2026 02 PM PST            9.74             90         -      Not Applicable
  01/30/2026 03 PM PST            9.75             92         +      Not Applicable
  01/30/2026 04 PM PST            9.74             90         -      Not Applicable
  01/30/2026 05 PM PST            9.74             90         0      Not Applicable
  01/30/2026 06 PM PST            9.74             90         0      Not Applicable
  01/30/2026 07 PM PST            9.74             90         0      Not Applicable
  01/30/2026 08 PM PST            9.73             89         -      Not Applicable
  01/30/2026 09 PM PST            9.73             89         0      Not Applicable
  01/30/2026 10 PM PST            9.73             89         0      Not Applicable
  01/30/2026 11 PM PST            9.73             89         0      Not Applicable
  01/31/2026 12 AM PST            9.73             89         0      Not Applicable
  01/31/2026 01 AM PST            9.72             87         -      Not Applicable
  01/31/2026 02 AM PST            9.72             87         0      Not Applicable
  01/31/2026 03 AM PST            9.72             87         0      Not Applicable
  01/31/2026 04 AM PST            9.71             86         -      Not Applicable
  01/31/2026 05 AM PST            9.71             86         0      Not Applicable
  01/31/2026 06 AM PST            9.71             86         0      Not Applicable
  01/31/2026 07 AM PST            9.71             86         0      Not Applicable
  01/31/2026 08 AM PST            9.71             86         0      Not Applicable
  01/31/2026 09 AM PST            9.71             86         0      Not Applicable
  01/31/2026 10 AM PST            9.71             86         0      Not Applicable
  01/31/2026 11 AM PST            9.71             86         0      Not Applicable
  01/31/2026 12 PM PST            9.71             86         0      Not Applicable
  01/31/2026 01 PM PST            9.71             86         0      Not Applicable
  01/31/2026 02 PM PST            9.70             84         -      Not Applicable
  01/31/2026 03 PM PST            9.70             84         0      Not Applicable
  01/31/2026 04 PM PST            9.71             86         +      Not Applicable
  01/31/2026 05 PM PST            9.70             84         -      Not Applicable
  01/31/2026 06 PM PST            9.71             86         +      Not Applicable
  01/31/2026 07 PM PST            9.69             83         -      Not Applicable
  01/31/2026 08 PM PST            9.70             84         +      Not Applicable
  01/31/2026 09 PM PST            9.69             83         -      Not Applicable
  01/31/2026 10 PM PST            9.69             83         0      Not Applicable
  01/31/2026 11 PM PST            9.69             83         0      Not Applicable
  02/01/2026 12 AM PST            9.69             83         0      Not Applicable
  02/01/2026 01 AM PST            9.68             81         -      Not Applicable
  02/01/2026 02 AM PST            9.68             81         0      Not Applicable
  02/01/2026 03 AM PST            9.68             81         0      Not Applicable
  02/01/2026 04 AM PST            9.68             81         0      Not Applicable
  02/01/2026 05 AM PST            9.68             81         0      Not Applicable
  02/01/2026 06 AM PST            9.67             80         -      Not Applicable
  02/01/2026 07 AM PST            9.67             80         0      Not Applicable
  02/01/2026 08 AM PST            9.67             80         0      Not Applicable
  02/01/2026 09 AM PST            9.67             80         0      Not Applicable
  02/01/2026 10 AM PST            9.67             80         0      Not Applicable
  02/01/2026 11 AM PST            9.67             80         0      Not Applicable
  02/01/2026 12 PM PST            9.66             79         -      Not Applicable
  02/01/2026 01 PM PST            9.67             80         +      Not Applicable
  02/01/2026 02 PM PST            9.67             80         0      Not Applicable
  02/01/2026 03 PM PST            9.67             80         0      Not Applicable
  02/01/2026 04 PM PST            9.66             79         -      Not Applicable
  02/01/2026 05 PM PST            9.66             79         0      Not Applicable
  02/01/2026 06 PM PST            9.66             79         0      Not Applicable
  02/01/2026 07 PM PST            9.66             79         0      Not Applicable
  02/01/2026 08 PM PST            9.66             79         0      Not Applicable
  02/01/2026 09 PM PST            9.65             78         -      Not Applicable
  02/01/2026 10 PM PST            9.65             78         0      Not Applicable
  02/01/2026 11 PM PST            9.65             78         0      Not Applicable
  02/02/2026 12 AM PST            9.65             78         0      Not Applicable
  02/02/2026 01 AM PST            9.64             76         -      Not Applicable
  02/02/2026 02 AM PST            9.64             76         0      Not Applicable
  02/02/2026 03 AM PST            9.64             76         0      Not Applicable
  02/02/2026 04 AM PST            9.64             76         0      Not Applicable
  02/02/2026 05 AM PST            9.64             76         0      Not Applicable
  02/02/2026 06 AM PST            9.63             75         -      Not Applicable
  02/02/2026 07 AM PST            9.63             75         0      Not Applicable
  02/02/2026 08 AM PST            9.63             75         0      Not Applicable
  02/02/2026 09 AM PST            9.63             75         0      Not Applicable
  02/02/2026 10 AM PST            9.63             75         0      Not Applicable
  02/02/2026 11 AM PST            9.63             75         0      Not Applicable
  02/02/2026 12 PM PST            9.63             75         0      Not Applicable
  02/02/2026 01 PM PST            9.63             75         0      Not Applicable
  02/02/2026 02 PM PST            9.63             75         0      Not Applicable
  02/02/2026 03 PM PST            9.63             75         0      Not Applicable
  02/02/2026 04 PM PST            9.62             74         -      Not Applicable
  02/02/2026 05 PM PST            9.63             75         +      Not Applicable
  02/02/2026 06 PM PST            9.62             74         -      Not Applicable
  02/02/2026 07 PM PST            9.62             74         0      Not Applicable
  02/02/2026 08 PM PST            9.62             74         0      Not Applicable
  02/02/2026 09 PM PST            9.62             74         0      Not Applicable
  02/02/2026 10 PM PST            9.61             72         -      Not Applicable
  02/02/2026 11 PM PST            9.61             72         0      Not Applicable
  02/03/2026 12 AM PST            9.61             72         0      Not Applicable
  02/03/2026 01 AM PST            9.61             72         0      Not Applicable
  02/03/2026 02 AM PST            9.61             72         0      Not Applicable
  02/03/2026 03 AM PST            9.61             72         0      Not Applicable
  02/03/2026 04 AM PST            9.60             71         -      Not Applicable
  02/03/2026 05 AM PST            9.60             71         0      Not Applicable
  02/03/2026 06 AM PST            9.60             71         0      Not Applicable
  02/03/2026 07 AM PST            9.60             71         0      Not Applicable
  02/03/2026 08 AM PST            9.59             70         -      Not Applicable
  02/03/2026 09 AM PST            9.59             70         0      Not Applicable
  02/03/2026 10 AM PST            9.59             70         0      Not Applicable
  02/03/2026 11 AM PST            9.59             70         0      Not Applicable
  02/03/2026 12 PM PST            9.59             70         0      Not Applicable
  02/03/2026 01 PM PST            9.59             70         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  02/03/2026 02 PM PST            9.59             70                Not Applicable
  02/03/2026 03 PM PST            9.59             70         0      Not Applicable
  02/03/2026 04 PM PST            9.59             70         0      Not Applicable
  02/03/2026 05 PM PST            9.59             70         0      Not Applicable
  02/03/2026 06 PM PST            9.59             70         0      Not Applicable
  02/03/2026 07 PM PST            9.58             69         -      Not Applicable
  02/03/2026 08 PM PST            9.58             69         0      Not Applicable
  02/03/2026 09 PM PST            9.58             69         0      Not Applicable
  02/03/2026 10 PM PST            9.58             69         0      Not Applicable
  02/03/2026 11 PM PST            9.58             69         0      Not Applicable
  02/04/2026 12 AM PST            9.58             69         0      Not Applicable
  02/04/2026 01 AM PST            9.58             69         0      Not Applicable
  02/04/2026 02 AM PST            9.58             69         0      Not Applicable
  02/04/2026 03 AM PST            9.58             69         0      Not Applicable
  02/04/2026 04 AM PST            9.58             69         0      Not Applicable
  02/04/2026 05 AM PST            9.58             69         0      Not Applicable
  02/04/2026 06 AM PST            9.57             68         -      Not Applicable
  02/04/2026 07 AM PST            9.57             68         0      Not Applicable
  02/04/2026 08 AM PST            9.57             68         0      Not Applicable
  02/04/2026 09 AM PST            9.57             68         0      Not Applicable
  02/04/2026 10 AM PST            9.57             68         0      Not Applicable
  02/04/2026 11 AM PST            9.57             68         0      Not Applicable
  02/04/2026 12 PM PST            9.57             68         0      Not Applicable
  02/04/2026 01 PM PST            9.57             68         0      Not Applicable
  02/04/2026 02 PM PST            9.57             68         0      Not Applicable
  02/04/2026 03 PM PST            9.57             68         0      Not Applicable
  02/04/2026 04 PM PST            9.57             68         0      Not Applicable
  02/04/2026 05 PM PST            9.57             68         0      Not Applicable
  02/04/2026 06 PM PST            9.57             68         0      Not Applicable
  02/04/2026 07 PM PST            9.57             68         0      Not Applicable
  02/04/2026 08 PM PST            9.56             67         -      Not Applicable
  02/04/2026 09 PM PST            9.56             67         0      Not Applicable
  02/04/2026 10 PM PST            9.56             67         0      Not Applicable
  02/04/2026 11 PM PST            9.56             67         0      Not Applicable
  02/05/2026 12 AM PST            9.56             67         0      Not Applicable
  02/05/2026 01 AM PST            9.56             67         0      Not Applicable
  02/05/2026 02 AM PST            9.56             67         0      Not Applicable
  02/05/2026 03 AM PST            9.56             67         0      Not Applicable
  02/05/2026 04 AM PST            9.56             67         0      Not Applicable
  02/05/2026 05 AM PST            9.56             67         0      Not Applicable
  02/05/2026 06 AM PST            9.56             67         0      Not Applicable
  02/05/2026 07 AM PST            9.56             67         0      Not Applicable
  02/05/2026 08 AM PST            9.56             67         0      Not Applicable
  02/05/2026 09 AM PST            9.56             67         0      Not Applicable
  02/05/2026 10 AM PST            9.55             66         -      Not Applicable
  02/05/2026 11 AM PST            9.55             66         0      Not Applicable
  02/05/2026 12 PM PST            9.55             66         0      Not Applicable
  02/05/2026 01 PM PST            9.55             66         0      Not Applicable
  02/05/2026 02 PM PST            9.55             66         0      Not Applicable
  02/05/2026 03 PM PST            9.55             66         0      Not Applicable
  02/05/2026 04 PM PST            9.55             66         0      Not Applicable
  02/05/2026 05 PM PST            9.55             66         0      Not Applicable
  02/05/2026 06 PM PST            9.55             66         0      Not Applicable
  02/05/2026 07 PM PST            9.55             66         0      Not Applicable
  02/05/2026 08 PM PST            9.55             66         0      Not Applicable
  02/05/2026 09 PM PST            9.55             66         0      Not Applicable
  02/05/2026 10 PM PST            9.55             66         0      Not Applicable
  02/05/2026 11 PM PST            9.55             66         0      Not Applicable
  02/06/2026 12 AM PST            9.54             64         -      Not Applicable
  02/06/2026 01 AM PST            9.54             64         0      Not Applicable
  02/06/2026 02 AM PST            9.54             64         0      Not Applicable
  02/06/2026 03 AM PST            9.54             64         0      Not Applicable
  02/06/2026 04 AM PST            9.54             64         0      Not Applicable
  02/06/2026 05 AM PST            9.54             64         0      Not Applicable
  02/06/2026 06 AM PST            9.54             64         0      Not Applicable
  02/06/2026 07 AM PST            9.54             64         0      Not Applicable
  02/06/2026 08 AM PST            9.54             64         0      Not Applicable
  02/06/2026 09 AM PST            9.54             64         0      Not Applicable
  02/06/2026 10 AM PST            9.54             64         0      Not Applicable
  02/06/2026 11 AM PST            9.54             64         0      Not Applicable
  02/06/2026 12 PM PST            9.54             64         0      Not Applicable
  02/06/2026 01 PM PST            9.54             64         0      Not Applicable
  02/06/2026 02 PM PST            9.54             64         0      Not Applicable
  02/06/2026 03 PM PST            9.54             64         0      Not Applicable
  02/06/2026 04 PM PST            9.54             64         0      Not Applicable
  02/06/2026 05 PM PST            9.53             63         -      Not Applicable
  02/06/2026 06 PM PST            9.53             63         0      Not Applicable
  02/06/2026 07 PM PST            9.53             63         0      Not Applicable
  02/06/2026 08 PM PST            9.53             63         0      Not Applicable
  02/06/2026 09 PM PST            9.53             63         0      Not Applicable
  02/06/2026 10 PM PST            9.53             63         0      Not Applicable
  02/06/2026 11 PM PST            9.53             63         0      Not Applicable
  02/07/2026 12 AM PST            9.53             63         0      Not Applicable
  02/07/2026 01 AM PST            9.53             63         0      Not Applicable
  02/07/2026 02 AM PST            9.53             63         0      Not Applicable
  02/07/2026 03 AM PST            9.53             63         0      Not Applicable
  02/07/2026 04 AM PST            9.53             63         0      Not Applicable
  02/07/2026 05 AM PST            9.53             63         0      Not Applicable
  02/07/2026 06 AM PST            9.53             63         0      Not Applicable
  02/07/2026 07 AM PST            9.53             63         0      Not Applicable
  02/07/2026 08 AM PST            9.53             63         0      Not Applicable
  02/07/2026 09 AM PST            9.53             63         0      Not Applicable
  02/07/2026 10 AM PST            9.52             62         -      Not Applicable
  02/07/2026 11 AM PST            9.52             62         0      Not Applicable
  02/07/2026 12 PM PST            9.52             62         0      Not Applicable
  02/07/2026 01 PM PST            9.52             62         0      Not Applicable
  02/07/2026 02 PM PST            9.52             62         0      Not Applicable
  02/07/2026 03 PM PST            9.52             62         0      Not Applicable
  02/07/2026 04 PM PST            9.52             62         0      Not Applicable
  02/07/2026 05 PM PST            9.52             62         0      Not Applicable
  02/07/2026 06 PM PST            9.52             62         0      Not Applicable
  02/07/2026 07 PM PST            9.52             62         0      Not Applicable
  02/07/2026 08 PM PST            9.52             62         0      Not Applicable
  02/07/2026 09 PM PST            9.52             62         0      Not Applicable
  02/07/2026 10 PM PST            9.52             62         0      Not Applicable
  02/07/2026 11 PM PST            9.52             62         0      Not Applicable
  02/08/2026 12 AM PST            9.52             62         0      Not Applicable
  02/08/2026 01 AM PST            9.52             62         0      Not Applicable
  02/08/2026 02 AM PST            9.52             62         0      Not Applicable
  02/08/2026 03 AM PST            9.51             61         -      Not Applicable
  02/08/2026 04 AM PST            9.51             61         0      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.