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

 | 

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: Mar 14 2026 at 9:10 AM PDTNext Issuance: Mar 15 2026 at 9:00 AM PDT
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:  03/14/2026 at 09:12 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  03/09/2026 at 09:00 AM PDT
# Maximum Observed Stage:                       9.97 Feet
# Maximum Observed Flow:                        189 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/14/2026 at 10:00 AM PDT
# Maximum Forecast Stage:                       9.62 Feet
# Maximum Forecast Flow:                        131 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  03/09/2026 09 AM PDT            9.97            189                Not Applicable
  03/09/2026 10 AM PDT            9.95            185         -      Not Applicable
  03/09/2026 11 AM PDT            9.96            187         +      Not Applicable
  03/09/2026 12 PM PDT            9.96            187         0      Not Applicable
  03/09/2026 01 PM PDT            9.96            187         0      Not Applicable
  03/09/2026 02 PM PDT            9.95            185         -      Not Applicable
  03/09/2026 03 PM PDT            9.94            184         -      Not Applicable
  03/09/2026 04 PM PDT            9.94            184         0      Not Applicable
  03/09/2026 05 PM PDT            9.93            182         -      Not Applicable
  03/09/2026 06 PM PDT            9.93            182         0      Not Applicable
  03/09/2026 07 PM PDT            9.93            182         0      Not Applicable
  03/09/2026 08 PM PDT            9.92            180         -      Not Applicable
  03/09/2026 09 PM PDT            9.91            178         -      Not Applicable
  03/09/2026 10 PM PDT            9.91            178         0      Not Applicable
  03/09/2026 11 PM PDT            9.92            180         +      Not Applicable
  03/10/2026 12 AM PDT            9.91            178         -      Not Applicable
  03/10/2026 01 AM PDT            9.90            177         -      Not Applicable
  03/10/2026 02 AM PDT            9.91            178         +      Not Applicable
  03/10/2026 03 AM PDT            9.90            177         -      Not Applicable
  03/10/2026 04 AM PDT            9.89            175         -      Not Applicable
  03/10/2026 05 AM PDT            9.89            175         0      Not Applicable
  03/10/2026 06 AM PDT            9.89            175         0      Not Applicable
  03/10/2026 07 AM PDT            9.88            173         -      Not Applicable
  03/10/2026 08 AM PDT            9.88            173         0      Not Applicable
  03/10/2026 09 AM PDT            9.87            171         -      Not Applicable
  03/10/2026 10 AM PDT            9.87            171         0      Not Applicable
  03/10/2026 11 AM PDT            9.87            171         0      Not Applicable
  03/10/2026 12 PM PDT            9.86            170         -      Not Applicable
  03/10/2026 01 PM PDT            9.86            170         0      Not Applicable
  03/10/2026 02 PM PDT            9.87            171         +      Not Applicable
  03/10/2026 03 PM PDT            9.86            170         -      Not Applicable
  03/10/2026 04 PM PDT            9.85            168         -      Not Applicable
  03/10/2026 05 PM PDT            9.85            168         0      Not Applicable
  03/10/2026 06 PM PDT            9.84            166         -      Not Applicable
  03/10/2026 07 PM PDT            9.84            166         0      Not Applicable
  03/10/2026 08 PM PDT            9.83            165         -      Not Applicable
  03/10/2026 09 PM PDT            9.82            163         -      Not Applicable
  03/10/2026 10 PM PDT            9.82            163         0      Not Applicable
  03/10/2026 11 PM PDT            9.82            163         0      Not Applicable
  03/11/2026 12 AM PDT            9.82            163         0      Not Applicable
  03/11/2026 01 AM PDT            9.82            163         0      Not Applicable
  03/11/2026 02 AM PDT            9.81            161         -      Not Applicable
  03/11/2026 03 AM PDT            9.81            161         0      Not Applicable
  03/11/2026 04 AM PDT            9.81            161         0      Not Applicable
  03/11/2026 05 AM PDT            9.79            158         -      Not Applicable
  03/11/2026 06 AM PDT            9.80            160         +      Not Applicable
  03/11/2026 07 AM PDT            9.79            158         -      Not Applicable
  03/11/2026 08 AM PDT            9.79            158         0      Not Applicable
  03/11/2026 09 AM PDT            9.79            158         0      Not Applicable
  03/11/2026 10 AM PDT            9.79            158         0      Not Applicable
  03/11/2026 11 AM PDT            9.79            158         0      Not Applicable
  03/11/2026 12 PM PDT            9.78            156         -      Not Applicable
  03/11/2026 01 PM PDT            9.79            158         +      Not Applicable
  03/11/2026 02 PM PDT            9.78            156         -      Not Applicable
  03/11/2026 03 PM PDT            9.78            156         0      Not Applicable
  03/11/2026 04 PM PDT            9.77            155         -      Not Applicable
  03/11/2026 05 PM PDT            9.78            156         +      Not Applicable
  03/11/2026 06 PM PDT            9.78            156         0      Not Applicable
  03/11/2026 07 PM PDT            9.78            156         0      Not Applicable
  03/11/2026 08 PM PDT            9.76            153         -      Not Applicable
  03/11/2026 09 PM PDT            9.75            151         -      Not Applicable
  03/11/2026 10 PM PDT            9.75            151         0      Not Applicable
  03/11/2026 11 PM PDT            9.75            151         0      Not Applicable
  03/12/2026 12 AM PDT            9.74            150         -      Not Applicable
  03/12/2026 01 AM PDT            9.74            150         0      Not Applicable
  03/12/2026 02 AM PDT            9.74            150         0      Not Applicable
  03/12/2026 03 AM PDT            9.73            148         -      Not Applicable
  03/12/2026 04 AM PDT            9.73            148         0      Not Applicable
  03/12/2026 05 AM PDT            9.74            150         +      Not Applicable
  03/12/2026 06 AM PDT            9.73            148         -      Not Applicable
  03/12/2026 07 AM PDT            9.73            148         0      Not Applicable
  03/12/2026 08 AM PDT            9.73            148         0      Not Applicable
  03/12/2026 09 AM PDT            9.73            148         0      Not Applicable
  03/12/2026 10 AM PDT            9.72            147         -      Not Applicable
  03/12/2026 11 AM PDT            9.72            147         0      Not Applicable
  03/12/2026 12 PM PDT            9.72            147         0      Not Applicable
  03/12/2026 01 PM PDT            9.72            147         0      Not Applicable
  03/12/2026 02 PM PDT            9.72            147         0      Not Applicable
  03/12/2026 03 PM PDT            9.72            147         0      Not Applicable
  03/12/2026 04 PM PDT            9.72            147         0      Not Applicable
  03/12/2026 05 PM PDT            9.73            148         +      Not Applicable
  03/12/2026 06 PM PDT            9.71            145         -      Not Applicable
  03/12/2026 07 PM PDT            9.71            145         0      Not Applicable
  03/12/2026 08 PM PDT            9.71            145         0      Not Applicable
  03/12/2026 09 PM PDT            9.71            145         0      Not Applicable
  03/12/2026 10 PM PDT            9.70            143         -      Not Applicable
  03/12/2026 11 PM PDT            9.70            143         0      Not Applicable
  03/13/2026 12 AM PDT            9.69            142         -      Not Applicable
  03/13/2026 01 AM PDT            9.69            142         0      Not Applicable
  03/13/2026 02 AM PDT            9.69            142         0      Not Applicable
  03/13/2026 03 AM PDT            9.69            142         0      Not Applicable
  03/13/2026 04 AM PDT            9.68            140         -      Not Applicable
  03/13/2026 05 AM PDT            9.69            142         +      Not Applicable
  03/13/2026 06 AM PDT            9.68            140         -      Not Applicable
  03/13/2026 07 AM PDT            9.68            140         0      Not Applicable
  03/13/2026 08 AM PDT            9.68            140         0      Not Applicable
  03/13/2026 09 AM PDT            9.67            139         -      Not Applicable
  03/13/2026 10 AM PDT            9.67            139         0      Not Applicable
  03/13/2026 11 AM PDT            9.68            140         +      Not Applicable
  03/13/2026 12 PM PDT            9.67            139         -      Not Applicable
  03/13/2026 01 PM PDT            9.68            140         +      Not Applicable
  03/13/2026 02 PM PDT            9.68            140         0      Not Applicable
  03/13/2026 03 PM PDT            9.67            139         -      Not Applicable
  03/13/2026 04 PM PDT            9.67            139         0      Not Applicable
  03/13/2026 05 PM PDT            9.67            139         0      Not Applicable
  03/13/2026 06 PM PDT            9.67            139         0      Not Applicable
  03/13/2026 07 PM PDT            9.67            139         0      Not Applicable
  03/13/2026 08 PM PDT            9.66            137         -      Not Applicable
  03/13/2026 09 PM PDT            9.65            136         -      Not Applicable
  03/13/2026 10 PM PDT            9.65            136         0      Not Applicable
  03/13/2026 11 PM PDT            9.65            136         0      Not Applicable
  03/14/2026 12 AM PDT            9.65            136         0      Not Applicable
  03/14/2026 01 AM PDT            9.64            134         -      Not Applicable
  03/14/2026 02 AM PDT            9.64            134         0      Not Applicable
  03/14/2026 03 AM PDT            9.64            134         0      Not Applicable
  03/14/2026 04 AM PDT            9.64            134         0      Not Applicable
  03/14/2026 05 AM PDT            9.63            132         -      Not Applicable
  03/14/2026 06 AM PDT            9.63            132         0      Not Applicable
  03/14/2026 07 AM PDT            9.63            132         0      Not Applicable
  03/14/2026 08 AM PDT            9.62            131         -      Not Applicable
  03/14/2026 09 AM PDT            9.62            131         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/14/2026 10 AM PDT            9.62            131                Not Applicable
  03/14/2026 11 AM PDT            9.62            131         0      Not Applicable
  03/14/2026 12 PM PDT            9.62            131         0      Not Applicable
  03/14/2026 01 PM PDT            9.61            129         -      Not Applicable
  03/14/2026 02 PM PDT            9.61            129         0      Not Applicable
  03/14/2026 03 PM PDT            9.61            129         0      Not Applicable
  03/14/2026 04 PM PDT            9.61            129         0      Not Applicable
  03/14/2026 05 PM PDT            9.60            128         -      Not Applicable
  03/14/2026 06 PM PDT            9.60            128         0      Not Applicable
  03/14/2026 07 PM PDT            9.60            128         0      Not Applicable
  03/14/2026 08 PM PDT            9.60            128         0      Not Applicable
  03/14/2026 09 PM PDT            9.60            128         0      Not Applicable
  03/14/2026 10 PM PDT            9.60            128         0      Not Applicable
  03/14/2026 11 PM PDT            9.59            126         -      Not Applicable
  03/15/2026 12 AM PDT            9.59            126         0      Not Applicable
  03/15/2026 01 AM PDT            9.59            126         0      Not Applicable
  03/15/2026 02 AM PDT            9.59            126         0      Not Applicable
  03/15/2026 03 AM PDT            9.59            126         0      Not Applicable
  03/15/2026 04 AM PDT            9.59            126         0      Not Applicable
  03/15/2026 05 AM PDT            9.58            124         -      Not Applicable
  03/15/2026 06 AM PDT            9.58            124         0      Not Applicable
  03/15/2026 07 AM PDT            9.58            124         0      Not Applicable
  03/15/2026 08 AM PDT            9.58            124         0      Not Applicable
  03/15/2026 09 AM PDT            9.58            124         0      Not Applicable
  03/15/2026 10 AM PDT            9.58            124         0      Not Applicable
  03/15/2026 11 AM PDT            9.57            122         -      Not Applicable
  03/15/2026 12 PM PDT            9.57            122         0      Not Applicable
  03/15/2026 01 PM PDT            9.57            122         0      Not Applicable
  03/15/2026 02 PM PDT            9.57            122         0      Not Applicable
  03/15/2026 03 PM PDT            9.57            122         0      Not Applicable
  03/15/2026 04 PM PDT            9.57            122         0      Not Applicable
  03/15/2026 05 PM PDT            9.57            122         0      Not Applicable
  03/15/2026 06 PM PDT            9.56            120         -      Not Applicable
  03/15/2026 07 PM PDT            9.56            120         0      Not Applicable
  03/15/2026 08 PM PDT            9.56            120         0      Not Applicable
  03/15/2026 09 PM PDT            9.56            120         0      Not Applicable
  03/15/2026 10 PM PDT            9.56            120         0      Not Applicable
  03/15/2026 11 PM PDT            9.56            120         0      Not Applicable
  03/16/2026 12 AM PDT            9.56            120         0      Not Applicable
  03/16/2026 01 AM PDT            9.56            120         0      Not Applicable
  03/16/2026 02 AM PDT            9.55            118         -      Not Applicable
  03/16/2026 03 AM PDT            9.55            118         0      Not Applicable
  03/16/2026 04 AM PDT            9.55            118         0      Not Applicable
  03/16/2026 05 AM PDT            9.55            118         0      Not Applicable
  03/16/2026 06 AM PDT            9.55            118         0      Not Applicable
  03/16/2026 07 AM PDT            9.55            118         0      Not Applicable
  03/16/2026 08 AM PDT            9.55            118         0      Not Applicable
  03/16/2026 09 AM PDT            9.55            118         0      Not Applicable
  03/16/2026 10 AM PDT            9.54            116         -      Not Applicable
  03/16/2026 11 AM PDT            9.54            116         0      Not Applicable
  03/16/2026 12 PM PDT            9.54            116         0      Not Applicable
  03/16/2026 01 PM PDT            9.54            116         0      Not Applicable
  03/16/2026 02 PM PDT            9.54            116         0      Not Applicable
  03/16/2026 03 PM PDT            9.54            116         0      Not Applicable
  03/16/2026 04 PM PDT            9.54            116         0      Not Applicable
  03/16/2026 05 PM PDT            9.54            116         0      Not Applicable
  03/16/2026 06 PM PDT            9.54            116         0      Not Applicable
  03/16/2026 07 PM PDT            9.53            114         -      Not Applicable
  03/16/2026 08 PM PDT            9.53            114         0      Not Applicable
  03/16/2026 09 PM PDT            9.53            114         0      Not Applicable
  03/16/2026 10 PM PDT            9.53            114         0      Not Applicable
  03/16/2026 11 PM PDT            9.53            114         0      Not Applicable
  03/17/2026 12 AM PDT            9.53            114         0      Not Applicable
  03/17/2026 01 AM PDT            9.53            114         0      Not Applicable
  03/17/2026 02 AM PDT            9.53            114         0      Not Applicable
  03/17/2026 03 AM PDT            9.53            114         0      Not Applicable
  03/17/2026 04 AM PDT            9.52            113         -      Not Applicable
  03/17/2026 05 AM PDT            9.52            113         0      Not Applicable
  03/17/2026 06 AM PDT            9.52            113         0      Not Applicable
  03/17/2026 07 AM PDT            9.52            113         0      Not Applicable
  03/17/2026 08 AM PDT            9.52            113         0      Not Applicable
  03/17/2026 09 AM PDT            9.52            113         0      Not Applicable
  03/17/2026 10 AM PDT            9.52            113         0      Not Applicable
  03/17/2026 11 AM PDT            9.52            113         0      Not Applicable
  03/17/2026 12 PM PDT            9.52            113         0      Not Applicable
  03/17/2026 01 PM PDT            9.52            113         0      Not Applicable
  03/17/2026 02 PM PDT            9.52            113         0      Not Applicable
  03/17/2026 03 PM PDT            9.51            111         -      Not Applicable
  03/17/2026 04 PM PDT            9.51            111         0      Not Applicable
  03/17/2026 05 PM PDT            9.51            111         0      Not Applicable
  03/17/2026 06 PM PDT            9.51            111         0      Not Applicable
  03/17/2026 07 PM PDT            9.51            111         0      Not Applicable
  03/17/2026 08 PM PDT            9.51            111         0      Not Applicable
  03/17/2026 09 PM PDT            9.51            111         0      Not Applicable
  03/17/2026 10 PM PDT            9.51            111         0      Not Applicable
  03/17/2026 11 PM PDT            9.51            111         0      Not Applicable
  03/18/2026 12 AM PDT            9.51            111         0      Not Applicable
  03/18/2026 01 AM PDT            9.51            111         0      Not Applicable
  03/18/2026 02 AM PDT            9.50            109         -      Not Applicable
  03/18/2026 03 AM PDT            9.50            109         0      Not Applicable
  03/18/2026 04 AM PDT            9.50            109         0      Not Applicable
  03/18/2026 05 AM PDT            9.50            109         0      Not Applicable
  03/18/2026 06 AM PDT            9.50            109         0      Not Applicable
  03/18/2026 07 AM PDT            9.50            109         0      Not Applicable
  03/18/2026 08 AM PDT            9.50            109         0      Not Applicable
  03/18/2026 09 AM PDT            9.50            109         0      Not Applicable
  03/18/2026 10 AM PDT            9.50            109         0      Not Applicable
  03/18/2026 11 AM PDT            9.50            109         0      Not Applicable
  03/18/2026 12 PM PDT            9.50            109         0      Not Applicable
  03/18/2026 01 PM PDT            9.49            107         -      Not Applicable
  03/18/2026 02 PM PDT            9.49            107         0      Not Applicable
  03/18/2026 03 PM PDT            9.49            107         0      Not Applicable
  03/18/2026 04 PM PDT            9.49            107         0      Not Applicable
  03/18/2026 05 PM PDT            9.49            107         0      Not Applicable
  03/18/2026 06 PM PDT            9.49            107         0      Not Applicable
  03/18/2026 07 PM PDT            9.49            107         0      Not Applicable
  03/18/2026 08 PM PDT            9.49            107         0      Not Applicable
  03/18/2026 09 PM PDT            9.49            107         0      Not Applicable
  03/18/2026 10 PM PDT            9.49            107         0      Not Applicable
  03/18/2026 11 PM PDT            9.49            107         0      Not Applicable
  03/19/2026 12 AM PDT            9.49            107         0      Not Applicable
  03/19/2026 01 AM PDT            9.49            107         0      Not Applicable
  03/19/2026 02 AM PDT            9.49            107         0      Not Applicable
  03/19/2026 03 AM PDT            9.48            105         -      Not Applicable
  03/19/2026 04 AM PDT            9.48            105         0      Not Applicable
  03/19/2026 05 AM PDT            9.48            105         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.