MATTOLE RIVER - PETROLIA (MTOC1)
Latitude: 40.31º NLongitude: 124.28º WElevation: 40 Feet
Location: Humboldt County in CaliforniaBulletin Group: North CoastRiver Group: North Coast
Issuance Time: Feb 06 2026 at 6:54 AM PSTNext Issuance: Feb 06 2026 at 3:00 PM 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 - Petrolia (MTOC1)
#
# File Generation Time:  02/06/2026 at 06:56 AM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  02/01/2026 at 04:00 PM PST
# Maximum Observed Stage:                       12.33 Feet
# Maximum Observed Flow:                        313 cfs
#
# Earliest Date & Time of Maximum Forecast:     02/09/2026 at 12:00 PM PST
# Maximum Forecast Stage:                       12.26 Feet
# Maximum Forecast Flow:                        255 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  02/01/2026 06 AM PST           12.33            313                Not Applicable
  02/01/2026 07 AM PST           12.33            313         0      Not Applicable
  02/01/2026 08 AM PST           12.33            313         0      Not Applicable
  02/01/2026 09 AM PST           12.33            313         0      Not Applicable
  02/01/2026 10 AM PST           12.32            304         -      Not Applicable
  02/01/2026 11 AM PST           12.33            313         +      Not Applicable
  02/01/2026 12 PM PST           12.33            313         0      Not Applicable
  02/01/2026 01 PM PST           12.33            313         0      Not Applicable
  02/01/2026 02 PM PST           12.33            313         0      Not Applicable
  02/01/2026 03 PM PST           12.33            313         0      Not Applicable
  02/01/2026 04 PM PST           12.33            313         0      Not Applicable
  02/01/2026 05 PM PST           12.32            304         -      Not Applicable
  02/01/2026 06 PM PST           12.32            304         0      Not Applicable
  02/01/2026 07 PM PST           12.32            304         0      Not Applicable
  02/01/2026 08 PM PST           12.32            304         0      Not Applicable
  02/01/2026 09 PM PST           12.32            304         0      Not Applicable
  02/01/2026 10 PM PST           12.32            304         0      Not Applicable
  02/01/2026 11 PM PST           12.31            295         -      Not Applicable
  02/02/2026 12 AM PST           12.31            295         0      Not Applicable
  02/02/2026 01 AM PST           12.31            295         0      Not Applicable
  02/02/2026 02 AM PST           12.31            295         0      Not Applicable
  02/02/2026 03 AM PST           12.31            295         0      Not Applicable
  02/02/2026 04 AM PST           12.31            295         0      Not Applicable
  02/02/2026 05 AM PST           12.31            295         0      Not Applicable
  02/02/2026 06 AM PST           12.31            295         0      Not Applicable
  02/02/2026 07 AM PST           12.30            287         -      Not Applicable
  02/02/2026 08 AM PST           12.30            287         0      Not Applicable
  02/02/2026 09 AM PST           12.30            287         0      Not Applicable
  02/02/2026 10 AM PST           12.30            287         0      Not Applicable
  02/02/2026 11 AM PST           12.30            287         0      Not Applicable
  02/02/2026 12 PM PST           12.30            287         0      Not Applicable
  02/02/2026 01 PM PST           12.30            287         0      Not Applicable
  02/02/2026 02 PM PST           12.31            295         +      Not Applicable
  02/02/2026 03 PM PST           12.30            287         -      Not Applicable
  02/02/2026 04 PM PST           12.30            287         0      Not Applicable
  02/02/2026 05 PM PST           12.30            287         0      Not Applicable
  02/02/2026 06 PM PST           12.30            287         0      Not Applicable
  02/02/2026 07 PM PST           12.30            287         0      Not Applicable
  02/02/2026 08 PM PST           12.29            279         -      Not Applicable
  02/02/2026 09 PM PST           12.29            279         0      Not Applicable
  02/02/2026 10 PM PST           12.29            279         0      Not Applicable
  02/02/2026 11 PM PST           12.29            279         0      Not Applicable
  02/03/2026 12 AM PST           12.29            279         0      Not Applicable
  02/03/2026 01 AM PST           12.29            279         0      Not Applicable
  02/03/2026 02 AM PST           12.29            279         0      Not Applicable
  02/03/2026 03 AM PST           12.29            279         0      Not Applicable
  02/03/2026 04 AM PST           12.28            271         -      Not Applicable
  02/03/2026 05 AM PST           12.29            279         +      Not Applicable
  02/03/2026 06 AM PST           12.29            279         0      Not Applicable
  02/03/2026 07 AM PST           12.28            271         -      Not Applicable
  02/03/2026 08 AM PST           12.28            271         0      Not Applicable
  02/03/2026 09 AM PST           12.28            271         0      Not Applicable
  02/03/2026 10 AM PST           12.28            271         0      Not Applicable
  02/03/2026 11 AM PST           12.28            271         0      Not Applicable
  02/03/2026 12 PM PST           12.28            271         0      Not Applicable
  02/03/2026 01 PM PST           12.28            271         0      Not Applicable
  02/03/2026 02 PM PST           12.28            271         0      Not Applicable
  02/03/2026 03 PM PST           12.28            271         0      Not Applicable
  02/03/2026 04 PM PST           12.28            271         0      Not Applicable
  02/03/2026 05 PM PST           12.28            271         0      Not Applicable
  02/03/2026 06 PM PST           12.27            263         -      Not Applicable
  02/03/2026 07 PM PST           12.27            263         0      Not Applicable
  02/03/2026 08 PM PST           12.27            263         0      Not Applicable
  02/03/2026 09 PM PST           12.27            263         0      Not Applicable
  02/03/2026 10 PM PST           12.28            271         +      Not Applicable
  02/03/2026 11 PM PST           12.27            263         -      Not Applicable
  02/04/2026 12 AM PST           12.27            263         0      Not Applicable
  02/04/2026 01 AM PST           12.27            263         0      Not Applicable
  02/04/2026 02 AM PST           12.27            263         0      Not Applicable
  02/04/2026 03 AM PST           12.27            263         0      Not Applicable
  02/04/2026 04 AM PST           12.26            255         -      Not Applicable
  02/04/2026 05 AM PST           12.27            263         +      Not Applicable
  02/04/2026 06 AM PST           12.26            255         -      Not Applicable
  02/04/2026 07 AM PST           12.26            255         0      Not Applicable
  02/04/2026 08 AM PST           12.26            255         0      Not Applicable
  02/04/2026 09 AM PST           12.26            255         0      Not Applicable
  02/04/2026 10 AM PST           12.26            255         0      Not Applicable
  02/04/2026 11 AM PST           12.26            255         0      Not Applicable
  02/04/2026 12 PM PST           12.26            255         0      Not Applicable
  02/04/2026 01 PM PST           12.26            255         0      Not Applicable
  02/04/2026 02 PM PST           12.26            255         0      Not Applicable
  02/04/2026 03 PM PST           12.26            255         0      Not Applicable
  02/04/2026 04 PM PST           12.26            255         0      Not Applicable
  02/04/2026 05 PM PST           12.26            255         0      Not Applicable
  02/04/2026 06 PM PST           12.26            255         0      Not Applicable
  02/04/2026 07 PM PST           12.26            255         0      Not Applicable
  02/04/2026 08 PM PST           12.26            255         0      Not Applicable
  02/04/2026 09 PM PST           12.25            247         -      Not Applicable
  02/04/2026 10 PM PST           12.25            247         0      Not Applicable
  02/04/2026 11 PM PST           12.25            247         0      Not Applicable
  02/05/2026 12 AM PST           12.25            247         0      Not Applicable
  02/05/2026 01 AM PST           12.25            247         0      Not Applicable
  02/05/2026 02 AM PST           12.25            247         0      Not Applicable
  02/05/2026 03 AM PST           12.25            247         0      Not Applicable
  02/05/2026 04 AM PST           12.24            240         -      Not Applicable
  02/05/2026 05 AM PST           12.25            247         +      Not Applicable
  02/05/2026 06 AM PST           12.25            247         0      Not Applicable
  02/05/2026 07 AM PST           12.24            240         -      Not Applicable
  02/05/2026 08 AM PST           12.24            240         0      Not Applicable
  02/05/2026 09 AM PST           12.24            240         0      Not Applicable
  02/05/2026 10 AM PST           12.25            247         +      Not Applicable
  02/05/2026 11 AM PST           12.24            240         -      Not Applicable
  02/05/2026 12 PM PST           12.24            240         0      Not Applicable
  02/05/2026 01 PM PST           12.24            240         0      Not Applicable
  02/05/2026 02 PM PST           12.25            247         +      Not Applicable
  02/05/2026 03 PM PST           12.24            240         -      Not Applicable
  02/05/2026 04 PM PST           12.24            240         0      Not Applicable
  02/05/2026 05 PM PST           12.24            240         0      Not Applicable
  02/05/2026 06 PM PST           12.24            240         0      Not Applicable
  02/05/2026 07 PM PST           12.24            240         0      Not Applicable
  02/05/2026 08 PM PST           12.24            240         0      Not Applicable
  02/05/2026 09 PM PST           12.24            240         0      Not Applicable
  02/05/2026 10 PM PST           12.24            240         0      Not Applicable
  02/05/2026 11 PM PST           12.24            240         0      Not Applicable
  02/06/2026 12 AM PST           12.23            233         -      Not Applicable
  02/06/2026 01 AM PST           12.23            233         0      Not Applicable
  02/06/2026 02 AM PST           12.24            240         +      Not Applicable
  02/06/2026 03 AM PST           12.23            233         -      Not Applicable
  02/06/2026 04 AM PST           12.23            233         0      Not Applicable
  02/06/2026 05 AM PST           12.23            233         0      Not Applicable
  02/06/2026 06 AM PST           12.23            233         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  02/06/2026 07 AM PST           12.23            233                Not Applicable
  02/06/2026 08 AM PST           12.23            233         0      Not Applicable
  02/06/2026 09 AM PST           12.23            233         0      Not Applicable
  02/06/2026 10 AM PST           12.23            233         0      Not Applicable
  02/06/2026 11 AM PST           12.22            225         -      Not Applicable
  02/06/2026 12 PM PST           12.22            225         0      Not Applicable
  02/06/2026 01 PM PST           12.22            225         0      Not Applicable
  02/06/2026 02 PM PST           12.22            225         0      Not Applicable
  02/06/2026 03 PM PST           12.22            225         0      Not Applicable
  02/06/2026 04 PM PST           12.22            225         0      Not Applicable
  02/06/2026 05 PM PST           12.22            225         0      Not Applicable
  02/06/2026 06 PM PST           12.22            225         0      Not Applicable
  02/06/2026 07 PM PST           12.22            225         0      Not Applicable
  02/06/2026 08 PM PST           12.22            225         0      Not Applicable
  02/06/2026 09 PM PST           12.22            225         0      Not Applicable
  02/06/2026 10 PM PST           12.22            225         0      Not Applicable
  02/06/2026 11 PM PST           12.22            225         0      Not Applicable
  02/07/2026 12 AM PST           12.22            225         0      Not Applicable
  02/07/2026 01 AM PST           12.22            225         0      Not Applicable
  02/07/2026 02 AM PST           12.22            225         0      Not Applicable
  02/07/2026 03 AM PST           12.22            225         0      Not Applicable
  02/07/2026 04 AM PST           12.21            219         -      Not Applicable
  02/07/2026 05 AM PST           12.21            219         0      Not Applicable
  02/07/2026 06 AM PST           12.21            219         0      Not Applicable
  02/07/2026 07 AM PST           12.21            219         0      Not Applicable
  02/07/2026 08 AM PST           12.21            219         0      Not Applicable
  02/07/2026 09 AM PST           12.21            219         0      Not Applicable
  02/07/2026 10 AM PST           12.21            219         0      Not Applicable
  02/07/2026 11 AM PST           12.21            219         0      Not Applicable
  02/07/2026 12 PM PST           12.21            219         0      Not Applicable
  02/07/2026 01 PM PST           12.21            219         0      Not Applicable
  02/07/2026 02 PM PST           12.21            219         0      Not Applicable
  02/07/2026 03 PM PST           12.21            219         0      Not Applicable
  02/07/2026 04 PM PST           12.21            219         0      Not Applicable
  02/07/2026 05 PM PST           12.21            219         0      Not Applicable
  02/07/2026 06 PM PST           12.21            219         0      Not Applicable
  02/07/2026 07 PM PST           12.21            219         0      Not Applicable
  02/07/2026 08 PM PST           12.21            219         0      Not Applicable
  02/07/2026 09 PM PST           12.21            219         0      Not Applicable
  02/07/2026 10 PM PST           12.20            212         -      Not Applicable
  02/07/2026 11 PM PST           12.20            212         0      Not Applicable
  02/08/2026 12 AM PST           12.20            212         0      Not Applicable
  02/08/2026 01 AM PST           12.20            212         0      Not Applicable
  02/08/2026 02 AM PST           12.20            212         0      Not Applicable
  02/08/2026 03 AM PST           12.20            212         0      Not Applicable
  02/08/2026 04 AM PST           12.20            212         0      Not Applicable
  02/08/2026 05 AM PST           12.20            212         0      Not Applicable
  02/08/2026 06 AM PST           12.20            212         0      Not Applicable
  02/08/2026 07 AM PST           12.20            212         0      Not Applicable
  02/08/2026 08 AM PST           12.20            212         0      Not Applicable
  02/08/2026 09 AM PST           12.20            212         0      Not Applicable
  02/08/2026 10 AM PST           12.20            212         0      Not Applicable
  02/08/2026 11 AM PST           12.20            212         0      Not Applicable
  02/08/2026 12 PM PST           12.20            212         0      Not Applicable
  02/08/2026 01 PM PST           12.20            212         0      Not Applicable
  02/08/2026 02 PM PST           12.20            212         0      Not Applicable
  02/08/2026 03 PM PST           12.20            212         0      Not Applicable
  02/08/2026 04 PM PST           12.20            212         0      Not Applicable
  02/08/2026 05 PM PST           12.20            212         0      Not Applicable
  02/08/2026 06 PM PST           12.20            212         0      Not Applicable
  02/08/2026 07 PM PST           12.20            212         0      Not Applicable
  02/08/2026 08 PM PST           12.20            212         0      Not Applicable
  02/08/2026 09 PM PST           12.20            212         0      Not Applicable
  02/08/2026 10 PM PST           12.20            212         0      Not Applicable
  02/08/2026 11 PM PST           12.21            219         +      Not Applicable
  02/09/2026 12 AM PST           12.21            219         0      Not Applicable
  02/09/2026 01 AM PST           12.21            219         0      Not Applicable
  02/09/2026 02 AM PST           12.22            225         +      Not Applicable
  02/09/2026 03 AM PST           12.22            225         0      Not Applicable
  02/09/2026 04 AM PST           12.23            233         +      Not Applicable
  02/09/2026 05 AM PST           12.23            233         0      Not Applicable
  02/09/2026 06 AM PST           12.24            240         +      Not Applicable
  02/09/2026 07 AM PST           12.24            240         0      Not Applicable
  02/09/2026 08 AM PST           12.24            240         0      Not Applicable
  02/09/2026 09 AM PST           12.24            240         0      Not Applicable
  02/09/2026 10 AM PST           12.25            247         +      Not Applicable
  02/09/2026 11 AM PST           12.25            247         0      Not Applicable
  02/09/2026 12 PM PST           12.26            255         +      Not Applicable
  02/09/2026 01 PM PST           12.26            255         0      Not Applicable
  02/09/2026 02 PM PST           12.26            255         0      Not Applicable
  02/09/2026 03 PM PST           12.26            255         0      Not Applicable
  02/09/2026 04 PM PST           12.26            255         0      Not Applicable
  02/09/2026 05 PM PST           12.26            255         0      Not Applicable
  02/09/2026 06 PM PST           12.25            247         -      Not Applicable
  02/09/2026 07 PM PST           12.25            247         0      Not Applicable
  02/09/2026 08 PM PST           12.25            247         0      Not Applicable
  02/09/2026 09 PM PST           12.24            240         -      Not Applicable
  02/09/2026 10 PM PST           12.24            240         0      Not Applicable
  02/09/2026 11 PM PST           12.23            233         -      Not Applicable
  02/10/2026 12 AM PST           12.23            233         0      Not Applicable
  02/10/2026 01 AM PST           12.22            225         -      Not Applicable
  02/10/2026 02 AM PST           12.22            225         0      Not Applicable
  02/10/2026 03 AM PST           12.22            225         0      Not Applicable
  02/10/2026 04 AM PST           12.21            219         -      Not Applicable
  02/10/2026 05 AM PST           12.21            219         0      Not Applicable
  02/10/2026 06 AM PST           12.21            219         0      Not Applicable
  02/10/2026 07 AM PST           12.20            212         -      Not Applicable
  02/10/2026 08 AM PST           12.20            212         0      Not Applicable
  02/10/2026 09 AM PST           12.20            212         0      Not Applicable
  02/10/2026 10 AM PST           12.20            212         0      Not Applicable
  02/10/2026 11 AM PST           12.19            205         -      Not Applicable
  02/10/2026 12 PM PST           12.19            205         0      Not Applicable
  02/10/2026 01 PM PST           12.19            205         0      Not Applicable
  02/10/2026 02 PM PST           12.19            205         0      Not Applicable
  02/10/2026 03 PM PST           12.19            205         0      Not Applicable
  02/10/2026 04 PM PST           12.19            205         0      Not Applicable
  02/10/2026 05 PM PST           12.19            205         0      Not Applicable
  02/10/2026 06 PM PST           12.19            205         0      Not Applicable
  02/10/2026 07 PM PST           12.18            199         -      Not Applicable
  02/10/2026 08 PM PST           12.18            199         0      Not Applicable
  02/10/2026 09 PM PST           12.18            199         0      Not Applicable
  02/10/2026 10 PM PST           12.18            199         0      Not Applicable
  02/10/2026 11 PM PST           12.18            199         0      Not Applicable
  02/11/2026 12 AM PST           12.18            199         0      Not Applicable
  02/11/2026 01 AM PST           12.18            199         0      Not Applicable
  02/11/2026 02 AM PST           12.18            199         0      Not Applicable
  02/11/2026 03 AM PST           12.18            199         0      Not Applicable
  02/11/2026 04 AM PST           12.18            199         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.