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 Feet
Location: Humboldt County in CaliforniaBulletin Group: North CoastRiver Group: North Coast
Issuance Time: Dec 09 2023 at 8:36 AM PSTNext Issuance: Dec 10 2023 at 9:00 AM PST
Monitor Stage: N/A Flood Stage: N/A

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Mattole River - Ettersburg (ETTC1)
#
# File Generation Time:  12/09/2023 at 08:37 AM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  12/06/2023 at 04:00 PM PST
# Maximum Observed Stage:                       11.4 Feet
# Maximum Observed Flow:                        634 cfs
#
# Earliest Date & Time of Maximum Forecast:     12/09/2023 at 09:00 AM PST
# Maximum Forecast Stage:                       10.3 Feet
# Maximum Forecast Flow:                        301 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  12/04/2023 08 AM PST            10.6            376                Not Applicable
  12/04/2023 09 AM PST            10.6            373         -      Not Applicable
  12/04/2023 10 AM PST            10.6            370         -      Not Applicable
  12/04/2023 11 AM PST            10.5            348         -      Not Applicable
  12/04/2023 12 PM PST            10.5            342         -      Not Applicable
  12/04/2023 01 PM PST            10.5            336         -      Not Applicable
  12/04/2023 02 PM PST            10.4            325         -      Not Applicable
  12/04/2023 03 PM PST            10.4            328         +      Not Applicable
  12/04/2023 04 PM PST            10.4            314         -      Not Applicable
  12/04/2023 05 PM PST            10.4            312         -      Not Applicable
  12/04/2023 06 PM PST            10.4            312         0      Not Applicable
  12/04/2023 07 PM PST            10.3            296         -      Not Applicable
  12/04/2023 08 PM PST            10.3            296         0      Not Applicable
  12/04/2023 09 PM PST            10.3            288         -      Not Applicable
  12/04/2023 10 PM PST            10.2            280         -      Not Applicable
  12/04/2023 11 PM PST            10.2            267         -      Not Applicable
  12/05/2023 12 AM PST            10.2            270         +      Not Applicable
  12/05/2023 01 AM PST            10.2            260         -      Not Applicable
  12/05/2023 02 AM PST            10.2            260         0      Not Applicable
  12/05/2023 03 AM PST            10.1            245         -      Not Applicable
  12/05/2023 04 AM PST            10.1            243         -      Not Applicable
  12/05/2023 05 AM PST            10.1            243         0      Not Applicable
  12/05/2023 06 AM PST            10.1            240         -      Not Applicable
  12/05/2023 07 AM PST            10.1            233         -      Not Applicable
  12/05/2023 08 AM PST            10.0            228         -      Not Applicable
  12/05/2023 09 AM PST            10.0            226         -      Not Applicable
  12/05/2023 10 AM PST            10.0            226         0      Not Applicable
  12/05/2023 11 AM PST            10.0            221         -      Not Applicable
  12/05/2023 12 PM PST            10.0            214         -      Not Applicable
  12/05/2023 01 PM PST            10.0            212         -      Not Applicable
  12/05/2023 02 PM PST            10.0            210         -      Not Applicable
  12/05/2023 03 PM PST            10.0            210         0      Not Applicable
  12/05/2023 04 PM PST             9.9            205         -      Not Applicable
  12/05/2023 05 PM PST             9.9            201         -      Not Applicable
  12/05/2023 06 PM PST             9.9            199         -      Not Applicable
  12/05/2023 07 PM PST             9.9            194         -      Not Applicable
  12/05/2023 08 PM PST             9.9            196         +      Not Applicable
  12/05/2023 09 PM PST             9.9            188         -      Not Applicable
  12/05/2023 10 PM PST             9.9            192         +      Not Applicable
  12/05/2023 11 PM PST             9.8            185         -      Not Applicable
  12/06/2023 12 AM PST             9.8            185         0      Not Applicable
  12/06/2023 01 AM PST             9.8            183         -      Not Applicable
  12/06/2023 02 AM PST             9.8            179         -      Not Applicable
  12/06/2023 03 AM PST             9.8            179         0      Not Applicable
  12/06/2023 04 AM PST             9.8            174         -      Not Applicable
  12/06/2023 05 AM PST             9.8            172         -      Not Applicable
  12/06/2023 06 AM PST             9.8            172         0      Not Applicable
  12/06/2023 07 AM PST             9.8            167         -      Not Applicable
  12/06/2023 08 AM PST             9.9            188         +      Not Applicable
  12/06/2023 09 AM PST             9.9            203         +      Not Applicable
  12/06/2023 10 AM PST            10.0            221         +      Not Applicable
  12/06/2023 11 AM PST            10.2            280         +      Not Applicable
  12/06/2023 12 PM PST            10.6            379         +      Not Applicable
  12/06/2023 01 PM PST            10.8            449         +      Not Applicable
  12/06/2023 02 PM PST            11.1            521         +      Not Applicable
  12/06/2023 03 PM PST            11.3            594         +      Not Applicable
  12/06/2023 04 PM PST            11.4            634         +      Not Applicable
  12/06/2023 05 PM PST            11.3            620         -      Not Applicable
  12/06/2023 06 PM PST            11.3            598         -      Not Applicable
  12/06/2023 07 PM PST            11.3            598         0      Not Applicable
  12/06/2023 08 PM PST            11.2            587         -      Not Applicable
  12/06/2023 09 PM PST            11.2            584         -      Not Applicable
  12/06/2023 10 PM PST            11.2            573         -      Not Applicable
  12/06/2023 11 PM PST            11.2            562         -      Not Applicable
  12/07/2023 12 AM PST            11.2            556         -      Not Applicable
  12/07/2023 01 AM PST            11.1            545         -      Not Applicable
  12/07/2023 02 AM PST            11.1            535         -      Not Applicable
  12/07/2023 03 AM PST            11.1            531         -      Not Applicable
  12/07/2023 04 AM PST            11.1            528         -      Not Applicable
  12/07/2023 05 AM PST            11.0            508         -      Not Applicable
  12/07/2023 06 AM PST            11.0            511         +      Not Applicable
  12/07/2023 07 AM PST            11.0            511         0      Not Applicable
  12/07/2023 08 AM PST            11.0            511         0      Not Applicable
  12/07/2023 09 AM PST            11.1            535         +      Not Applicable
  12/07/2023 10 AM PST            11.2            556         +      Not Applicable
  12/07/2023 11 AM PST            11.2            562         +      Not Applicable
  12/07/2023 12 PM PST            11.3            591         +      Not Applicable
  12/07/2023 01 PM PST            11.2            584         -      Not Applicable
  12/07/2023 02 PM PST            11.2            580         -      Not Applicable
  12/07/2023 03 PM PST            11.2            580         0      Not Applicable
  12/07/2023 04 PM PST            11.2            562         -      Not Applicable
  12/07/2023 05 PM PST            11.2            566         +      Not Applicable
  12/07/2023 06 PM PST            11.2            552         -      Not Applicable
  12/07/2023 07 PM PST            11.2            552         0      Not Applicable
  12/07/2023 08 PM PST            11.2            552         0      Not Applicable
  12/07/2023 09 PM PST            11.1            535         -      Not Applicable
  12/07/2023 10 PM PST            11.1            528         -      Not Applicable
  12/07/2023 11 PM PST            11.1            521         -      Not Applicable
  12/08/2023 12 AM PST            11.0            508         -      Not Applicable
  12/08/2023 01 AM PST            11.0            501         -      Not Applicable
  12/08/2023 02 AM PST            11.0            491         -      Not Applicable
  12/08/2023 03 AM PST            11.0            488         -      Not Applicable
  12/08/2023 04 AM PST            10.9            482         -      Not Applicable
  12/08/2023 05 AM PST            10.9            465         -      Not Applicable
  12/08/2023 06 AM PST            10.9            462         -      Not Applicable
  12/08/2023 07 AM PST            10.9            456         -      Not Applicable
  12/08/2023 08 AM PST            10.8            449         -      Not Applicable
  12/08/2023 09 AM PST            10.8            443         -      Not Applicable
  12/08/2023 10 AM PST            10.8            434         -      Not Applicable
  12/08/2023 11 AM PST            10.8            424         -      Not Applicable
  12/08/2023 12 PM PST            10.8            421         -      Not Applicable
  12/08/2023 01 PM PST            10.7            409         -      Not Applicable
  12/08/2023 02 PM PST            10.7            397         -      Not Applicable
  12/08/2023 03 PM PST            10.7            400         +      Not Applicable
  12/08/2023 04 PM PST            10.7            391         -      Not Applicable
  12/08/2023 05 PM PST            10.6            388         -      Not Applicable
  12/08/2023 06 PM PST            10.6            379         -      Not Applicable
  12/08/2023 07 PM PST            10.6            370         -      Not Applicable
  12/08/2023 08 PM PST            10.6            362         -      Not Applicable
  12/08/2023 09 PM PST            10.5            359         -      Not Applicable
  12/08/2023 10 PM PST            10.5            353         -      Not Applicable
  12/08/2023 11 PM PST            10.5            345         -      Not Applicable
  12/09/2023 12 AM PST            10.5            348         +      Not Applicable
  12/09/2023 01 AM PST            10.5            345         -      Not Applicable
  12/09/2023 02 AM PST            10.4            331         -      Not Applicable
  12/09/2023 03 AM PST            10.4            325         -      Not Applicable
  12/09/2023 04 AM PST            10.4            322         -      Not Applicable
  12/09/2023 05 AM PST            10.4            320         -      Not Applicable
  12/09/2023 06 AM PST            10.4            309         -      Not Applicable
  12/09/2023 07 AM PST            10.3            306         -      Not Applicable
  12/09/2023 08 AM PST            10.3            304         -      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  12/09/2023 09 AM PST            10.3            301                Not Applicable
  12/09/2023 10 AM PST            10.3            298         -      Not Applicable
  12/09/2023 11 AM PST            10.3            296         -      Not Applicable
  12/09/2023 12 PM PST            10.3            293         -      Not Applicable
  12/09/2023 01 PM PST            10.3            290         -      Not Applicable
  12/09/2023 02 PM PST            10.3            288         -      Not Applicable
  12/09/2023 03 PM PST            10.3            285         -      Not Applicable
  12/09/2023 04 PM PST            10.3            283         -      Not Applicable
  12/09/2023 05 PM PST            10.2            280         -      Not Applicable
  12/09/2023 06 PM PST            10.2            277         -      Not Applicable
  12/09/2023 07 PM PST            10.2            277         0      Not Applicable
  12/09/2023 08 PM PST            10.2            275         -      Not Applicable
  12/09/2023 09 PM PST            10.2            272         -      Not Applicable
  12/09/2023 10 PM PST            10.2            270         -      Not Applicable
  12/09/2023 11 PM PST            10.2            267         -      Not Applicable
  12/10/2023 12 AM PST            10.2            265         -      Not Applicable
  12/10/2023 01 AM PST            10.2            262         -      Not Applicable
  12/10/2023 02 AM PST            10.2            260         -      Not Applicable
  12/10/2023 03 AM PST            10.2            257         -      Not Applicable
  12/10/2023 04 AM PST            10.2            257         0      Not Applicable
  12/10/2023 05 AM PST            10.2            255         -      Not Applicable
  12/10/2023 06 AM PST            10.1            252         -      Not Applicable
  12/10/2023 07 AM PST            10.1            250         -      Not Applicable
  12/10/2023 08 AM PST            10.1            247         -      Not Applicable
  12/10/2023 09 AM PST            10.1            245         -      Not Applicable
  12/10/2023 10 AM PST            10.1            245         0      Not Applicable
  12/10/2023 11 AM PST            10.1            243         -      Not Applicable
  12/10/2023 12 PM PST            10.1            240         -      Not Applicable
  12/10/2023 01 PM PST            10.1            238         -      Not Applicable
  12/10/2023 02 PM PST            10.1            235         -      Not Applicable
  12/10/2023 03 PM PST            10.1            235         0      Not Applicable
  12/10/2023 04 PM PST            10.1            233         -      Not Applicable
  12/10/2023 05 PM PST            10.1            231         -      Not Applicable
  12/10/2023 06 PM PST            10.0            228         -      Not Applicable
  12/10/2023 07 PM PST            10.0            226         -      Not Applicable
  12/10/2023 08 PM PST            10.0            226         0      Not Applicable
  12/10/2023 09 PM PST            10.0            224         -      Not Applicable
  12/10/2023 10 PM PST            10.0            221         -      Not Applicable
  12/10/2023 11 PM PST            10.0            219         -      Not Applicable
  12/11/2023 12 AM PST            10.0            219         0      Not Applicable
  12/11/2023 01 AM PST            10.0            217         -      Not Applicable
  12/11/2023 02 AM PST            10.0            214         -      Not Applicable
  12/11/2023 03 AM PST            10.0            214         0      Not Applicable
  12/11/2023 04 AM PST            10.0            212         -      Not Applicable
  12/11/2023 05 AM PST            10.0            210         -      Not Applicable
  12/11/2023 06 AM PST            10.0            210         0      Not Applicable
  12/11/2023 07 AM PST             9.9            207         -      Not Applicable
  12/11/2023 08 AM PST             9.9            205         -      Not Applicable
  12/11/2023 09 AM PST             9.9            203         -      Not Applicable
  12/11/2023 10 AM PST             9.9            203         0      Not Applicable
  12/11/2023 11 AM PST             9.9            201         -      Not Applicable
  12/11/2023 12 PM PST             9.9            199         -      Not Applicable
  12/11/2023 01 PM PST             9.9            199         0      Not Applicable
  12/11/2023 02 PM PST             9.9            196         -      Not Applicable
  12/11/2023 03 PM PST             9.9            194         -      Not Applicable
  12/11/2023 04 PM PST             9.9            192         -      Not Applicable
  12/11/2023 05 PM PST             9.9            192         0      Not Applicable
  12/11/2023 06 PM PST             9.9            190         -      Not Applicable
  12/11/2023 07 PM PST             9.9            188         -      Not Applicable
  12/11/2023 08 PM PST             9.9            188         0      Not Applicable
  12/11/2023 09 PM PST             9.8            185         -      Not Applicable
  12/11/2023 10 PM PST             9.8            183         -      Not Applicable
  12/11/2023 11 PM PST             9.8            183         0      Not Applicable
  12/12/2023 12 AM PST             9.8            181         -      Not Applicable
  12/12/2023 01 AM PST             9.8            179         -      Not Applicable
  12/12/2023 02 AM PST             9.8            179         0      Not Applicable
  12/12/2023 03 AM PST             9.8            176         -      Not Applicable
  12/12/2023 04 AM PST             9.8            176         0      Not Applicable
  12/12/2023 05 AM PST             9.8            174         -      Not Applicable
  12/12/2023 06 AM PST             9.8            172         -      Not Applicable
  12/12/2023 07 AM PST             9.8            172         0      Not Applicable
  12/12/2023 08 AM PST             9.8            170         -      Not Applicable
  12/12/2023 09 AM PST             9.8            170         0      Not Applicable
  12/12/2023 10 AM PST             9.8            167         -      Not Applicable
  12/12/2023 11 AM PST             9.8            167         0      Not Applicable
  12/12/2023 12 PM PST             9.8            165         -      Not Applicable
  12/12/2023 01 PM PST             9.8            163         -      Not Applicable
  12/12/2023 02 PM PST             9.8            163         0      Not Applicable
  12/12/2023 03 PM PST             9.7            161         -      Not Applicable
  12/12/2023 04 PM PST             9.7            161         0      Not Applicable
  12/12/2023 05 PM PST             9.7            159         -      Not Applicable
  12/12/2023 06 PM PST             9.7            159         0      Not Applicable
  12/12/2023 07 PM PST             9.7            156         -      Not Applicable
  12/12/2023 08 PM PST             9.7            156         0      Not Applicable
  12/12/2023 09 PM PST             9.7            154         -      Not Applicable
  12/12/2023 10 PM PST             9.7            154         0      Not Applicable
  12/12/2023 11 PM PST             9.7            152         -      Not Applicable
  12/13/2023 12 AM PST             9.7            152         0      Not Applicable
  12/13/2023 01 AM PST             9.7            150         -      Not Applicable
  12/13/2023 02 AM PST             9.7            150         0      Not Applicable
  12/13/2023 03 AM PST             9.7            148         -      Not Applicable
  12/13/2023 04 AM PST             9.7            148         0      Not Applicable
  12/13/2023 05 AM PST             9.7            146         -      Not Applicable
  12/13/2023 06 AM PST             9.7            146         0      Not Applicable
  12/13/2023 07 AM PST             9.7            144         -      Not Applicable
  12/13/2023 08 AM PST             9.7            144         0      Not Applicable
  12/13/2023 09 AM PST             9.7            142         -      Not Applicable
  12/13/2023 10 AM PST             9.7            142         0      Not Applicable
  12/13/2023 11 AM PST             9.6            140         -      Not Applicable
  12/13/2023 12 PM PST             9.6            140         0      Not Applicable
  12/13/2023 01 PM PST             9.6            138         -      Not Applicable
  12/13/2023 02 PM PST             9.6            138         0      Not Applicable
  12/13/2023 03 PM PST             9.6            136         -      Not Applicable
  12/13/2023 04 PM PST             9.6            136         0      Not Applicable
  12/13/2023 05 PM PST             9.6            134         -      Not Applicable
  12/13/2023 06 PM PST             9.6            134         0      Not Applicable
  12/13/2023 07 PM PST             9.6            134         0      Not Applicable
  12/13/2023 08 PM PST             9.6            132         -      Not Applicable
  12/13/2023 09 PM PST             9.6            132         0      Not Applicable
  12/13/2023 10 PM PST             9.6            130         -      Not Applicable
  12/13/2023 11 PM PST             9.6            130         0      Not Applicable
  12/14/2023 12 AM PST             9.6            128         -      Not Applicable
  12/14/2023 01 AM PST             9.6            128         0      Not Applicable
  12/14/2023 02 AM PST             9.6            128         0      Not Applicable
  12/14/2023 03 AM PST             9.6            126         -      Not Applicable
  12/14/2023 04 AM PST             9.6            126         0      Not Applicable
#
# NOTE 1: Stages are rounded to the nearest tenth (.1) 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.