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: Jan 22 2026 at 1:25 PM PSTNext Issuance: Jan 23 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 - Petrolia (MTOC1)
#
# File Generation Time:  01/22/2026 at 01:28 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  01/17/2026 at 02:00 PM PST
# Maximum Observed Stage:                       13.00 Feet
# Maximum Observed Flow:                        1020 cfs
#
# Earliest Date & Time of Maximum Forecast:     01/22/2026 at 02:00 PM PST
# Maximum Forecast Stage:                       12.72 Feet
# Maximum Forecast Flow:                        715 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  01/17/2026 01 PM PST           13.00           1020                Not Applicable
  01/17/2026 02 PM PST           13.00           1020         0      Not Applicable
  01/17/2026 03 PM PST           12.99           1009         -      Not Applicable
  01/17/2026 04 PM PST           12.99           1009         0      Not Applicable
  01/17/2026 05 PM PST           12.99           1009         0      Not Applicable
  01/17/2026 06 PM PST           12.98            998         -      Not Applicable
  01/17/2026 07 PM PST           12.98            998         0      Not Applicable
  01/17/2026 08 PM PST           12.98            998         0      Not Applicable
  01/17/2026 09 PM PST           12.98            998         0      Not Applicable
  01/17/2026 10 PM PST           12.97            986         -      Not Applicable
  01/17/2026 11 PM PST           12.97            986         0      Not Applicable
  01/18/2026 12 AM PST           12.97            986         0      Not Applicable
  01/18/2026 01 AM PST           12.96            975         -      Not Applicable
  01/18/2026 02 AM PST           12.96            975         0      Not Applicable
  01/18/2026 03 AM PST           12.96            975         0      Not Applicable
  01/18/2026 04 AM PST           12.96            975         0      Not Applicable
  01/18/2026 05 AM PST           12.95            964         -      Not Applicable
  01/18/2026 06 AM PST           12.95            964         0      Not Applicable
  01/18/2026 07 AM PST           12.95            964         0      Not Applicable
  01/18/2026 08 AM PST           12.94            953         -      Not Applicable
  01/18/2026 09 AM PST           12.94            953         0      Not Applicable
  01/18/2026 10 AM PST           12.94            953         0      Not Applicable
  01/18/2026 11 AM PST           12.94            953         0      Not Applicable
  01/18/2026 12 PM PST           12.93            942         -      Not Applicable
  01/18/2026 01 PM PST           12.93            942         0      Not Applicable
  01/18/2026 02 PM PST           12.93            942         0      Not Applicable
  01/18/2026 03 PM PST           12.93            942         0      Not Applicable
  01/18/2026 04 PM PST           12.92            931         -      Not Applicable
  01/18/2026 05 PM PST           12.92            931         0      Not Applicable
  01/18/2026 06 PM PST           12.92            931         0      Not Applicable
  01/18/2026 07 PM PST           12.92            931         0      Not Applicable
  01/18/2026 08 PM PST           12.91            920         -      Not Applicable
  01/18/2026 09 PM PST           12.91            920         0      Not Applicable
  01/18/2026 10 PM PST           12.91            920         0      Not Applicable
  01/18/2026 11 PM PST           12.91            920         0      Not Applicable
  01/19/2026 12 AM PST           12.90            909         -      Not Applicable
  01/19/2026 01 AM PST           12.90            909         0      Not Applicable
  01/19/2026 02 AM PST           12.90            909         0      Not Applicable
  01/19/2026 03 AM PST           12.89            898         -      Not Applicable
  01/19/2026 04 AM PST           12.89            898         0      Not Applicable
  01/19/2026 05 AM PST           12.89            898         0      Not Applicable
  01/19/2026 06 AM PST           12.89            898         0      Not Applicable
  01/19/2026 07 AM PST           12.88            887         -      Not Applicable
  01/19/2026 08 AM PST           12.88            887         0      Not Applicable
  01/19/2026 09 AM PST           12.88            887         0      Not Applicable
  01/19/2026 10 AM PST           12.88            887         0      Not Applicable
  01/19/2026 11 AM PST           12.87            876         -      Not Applicable
  01/19/2026 12 PM PST           12.87            876         0      Not Applicable
  01/19/2026 01 PM PST           12.87            876         0      Not Applicable
  01/19/2026 02 PM PST           12.87            876         0      Not Applicable
  01/19/2026 03 PM PST           12.87            876         0      Not Applicable
  01/19/2026 04 PM PST           12.86            865         -      Not Applicable
  01/19/2026 05 PM PST           12.86            865         0      Not Applicable
  01/19/2026 06 PM PST           12.86            865         0      Not Applicable
  01/19/2026 07 PM PST           12.86            865         0      Not Applicable
  01/19/2026 08 PM PST           12.85            854         -      Not Applicable
  01/19/2026 09 PM PST           12.85            854         0      Not Applicable
  01/19/2026 10 PM PST           12.85            854         0      Not Applicable
  01/19/2026 11 PM PST           12.85            854         0      Not Applicable
  01/20/2026 12 AM PST           12.85            854         0      Not Applicable
  01/20/2026 01 AM PST           12.84            843         -      Not Applicable
  01/20/2026 02 AM PST           12.84            843         0      Not Applicable
  01/20/2026 03 AM PST           12.84            843         0      Not Applicable
  01/20/2026 04 AM PST           12.84            843         0      Not Applicable
  01/20/2026 05 AM PST           12.83            832         -      Not Applicable
  01/20/2026 06 AM PST           12.83            832         0      Not Applicable
  01/20/2026 07 AM PST           12.83            832         0      Not Applicable
  01/20/2026 08 AM PST           12.83            832         0      Not Applicable
  01/20/2026 09 AM PST           12.83            832         0      Not Applicable
  01/20/2026 10 AM PST           12.82            821         -      Not Applicable
  01/20/2026 11 AM PST           12.82            821         0      Not Applicable
  01/20/2026 12 PM PST           12.82            821         0      Not Applicable
  01/20/2026 01 PM PST           12.82            821         0      Not Applicable
  01/20/2026 02 PM PST           12.81            811         -      Not Applicable
  01/20/2026 03 PM PST           12.81            811         0      Not Applicable
  01/20/2026 04 PM PST           12.81            811         0      Not Applicable
  01/20/2026 05 PM PST           12.81            811         0      Not Applicable
  01/20/2026 06 PM PST           12.81            811         0      Not Applicable
  01/20/2026 07 PM PST           12.80            800         -      Not Applicable
  01/20/2026 08 PM PST           12.80            800         0      Not Applicable
  01/20/2026 09 PM PST           12.80            800         0      Not Applicable
  01/20/2026 10 PM PST           12.80            800         0      Not Applicable
  01/20/2026 11 PM PST           12.80            800         0      Not Applicable
  01/21/2026 12 AM PST           12.79            789         -      Not Applicable
  01/21/2026 01 AM PST           12.79            789         0      Not Applicable
  01/21/2026 02 AM PST           12.79            789         0      Not Applicable
  01/21/2026 03 AM PST           12.79            789         0      Not Applicable
  01/21/2026 04 AM PST           12.79            789         0      Not Applicable
  01/21/2026 05 AM PST           12.78            778         -      Not Applicable
  01/21/2026 06 AM PST           12.78            778         0      Not Applicable
  01/21/2026 07 AM PST           12.78            778         0      Not Applicable
  01/21/2026 08 AM PST           12.78            778         0      Not Applicable
  01/21/2026 09 AM PST           12.78            778         0      Not Applicable
  01/21/2026 10 AM PST           12.77            768         -      Not Applicable
  01/21/2026 11 AM PST           12.77            768         0      Not Applicable
  01/21/2026 12 PM PST           12.77            768         0      Not Applicable
  01/21/2026 01 PM PST           12.77            768         0      Not Applicable
  01/21/2026 02 PM PST           12.77            768         0      Not Applicable
  01/21/2026 03 PM PST           12.77            768         0      Not Applicable
  01/21/2026 04 PM PST           12.76            757         -      Not Applicable
  01/21/2026 05 PM PST           12.76            757         0      Not Applicable
  01/21/2026 06 PM PST           12.76            757         0      Not Applicable
  01/21/2026 07 PM PST           12.76            757         0      Not Applicable
  01/21/2026 08 PM PST           12.76            757         0      Not Applicable
  01/21/2026 09 PM PST           12.75            746         -      Not Applicable
  01/21/2026 10 PM PST           12.75            746         0      Not Applicable
  01/21/2026 11 PM PST           12.75            746         0      Not Applicable
  01/22/2026 12 AM PST           12.75            746         0      Not Applicable
  01/22/2026 01 AM PST           12.74            736         -      Not Applicable
  01/22/2026 02 AM PST           12.74            736         0      Not Applicable
  01/22/2026 03 AM PST           12.74            736         0      Not Applicable
  01/22/2026 04 AM PST           12.74            736         0      Not Applicable
  01/22/2026 05 AM PST           12.74            736         0      Not Applicable
  01/22/2026 06 AM PST           12.73            725         -      Not Applicable
  01/22/2026 07 AM PST           12.73            725         0      Not Applicable
  01/22/2026 08 AM PST           12.73            725         0      Not Applicable
  01/22/2026 09 AM PST           12.73            725         0      Not Applicable
  01/22/2026 10 AM PST           12.73            725         0      Not Applicable
  01/22/2026 11 AM PST           12.72            715         -      Not Applicable
  01/22/2026 12 PM PST           12.72            715         0      Not Applicable
  01/22/2026 01 PM PST           12.72            715         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  01/22/2026 02 PM PST           12.72            715                Not Applicable
  01/22/2026 03 PM PST           12.72            715         0      Not Applicable
  01/22/2026 04 PM PST           12.71            704         -      Not Applicable
  01/22/2026 05 PM PST           12.71            704         0      Not Applicable
  01/22/2026 06 PM PST           12.71            704         0      Not Applicable
  01/22/2026 07 PM PST           12.71            704         0      Not Applicable
  01/22/2026 08 PM PST           12.71            704         0      Not Applicable
  01/22/2026 09 PM PST           12.71            704         0      Not Applicable
  01/22/2026 10 PM PST           12.70            694         -      Not Applicable
  01/22/2026 11 PM PST           12.70            694         0      Not Applicable
  01/23/2026 12 AM PST           12.70            694         0      Not Applicable
  01/23/2026 01 AM PST           12.70            694         0      Not Applicable
  01/23/2026 02 AM PST           12.70            694         0      Not Applicable
  01/23/2026 03 AM PST           12.70            694         0      Not Applicable
  01/23/2026 04 AM PST           12.69            683         -      Not Applicable
  01/23/2026 05 AM PST           12.69            683         0      Not Applicable
  01/23/2026 06 AM PST           12.69            683         0      Not Applicable
  01/23/2026 07 AM PST           12.69            683         0      Not Applicable
  01/23/2026 08 AM PST           12.69            683         0      Not Applicable
  01/23/2026 09 AM PST           12.68            673         -      Not Applicable
  01/23/2026 10 AM PST           12.68            673         0      Not Applicable
  01/23/2026 11 AM PST           12.68            673         0      Not Applicable
  01/23/2026 12 PM PST           12.68            673         0      Not Applicable
  01/23/2026 01 PM PST           12.68            673         0      Not Applicable
  01/23/2026 02 PM PST           12.68            673         0      Not Applicable
  01/23/2026 03 PM PST           12.67            662         -      Not Applicable
  01/23/2026 04 PM PST           12.67            662         0      Not Applicable
  01/23/2026 05 PM PST           12.67            662         0      Not Applicable
  01/23/2026 06 PM PST           12.67            662         0      Not Applicable
  01/23/2026 07 PM PST           12.67            662         0      Not Applicable
  01/23/2026 08 PM PST           12.67            662         0      Not Applicable
  01/23/2026 09 PM PST           12.66            652         -      Not Applicable
  01/23/2026 10 PM PST           12.66            652         0      Not Applicable
  01/23/2026 11 PM PST           12.66            652         0      Not Applicable
  01/24/2026 12 AM PST           12.66            652         0      Not Applicable
  01/24/2026 01 AM PST           12.66            652         0      Not Applicable
  01/24/2026 02 AM PST           12.66            652         0      Not Applicable
  01/24/2026 03 AM PST           12.65            641         -      Not Applicable
  01/24/2026 04 AM PST           12.65            641         0      Not Applicable
  01/24/2026 05 AM PST           12.65            641         0      Not Applicable
  01/24/2026 06 AM PST           12.65            641         0      Not Applicable
  01/24/2026 07 AM PST           12.65            641         0      Not Applicable
  01/24/2026 08 AM PST           12.65            641         0      Not Applicable
  01/24/2026 09 AM PST           12.65            641         0      Not Applicable
  01/24/2026 10 AM PST           12.65            641         0      Not Applicable
  01/24/2026 11 AM PST           12.64            631         -      Not Applicable
  01/24/2026 12 PM PST           12.64            631         0      Not Applicable
  01/24/2026 01 PM PST           12.64            631         0      Not Applicable
  01/24/2026 02 PM PST           12.64            631         0      Not Applicable
  01/24/2026 03 PM PST           12.64            631         0      Not Applicable
  01/24/2026 04 PM PST           12.64            631         0      Not Applicable
  01/24/2026 05 PM PST           12.64            631         0      Not Applicable
  01/24/2026 06 PM PST           12.64            631         0      Not Applicable
  01/24/2026 07 PM PST           12.63            621         -      Not Applicable
  01/24/2026 08 PM PST           12.63            621         0      Not Applicable
  01/24/2026 09 PM PST           12.63            621         0      Not Applicable
  01/24/2026 10 PM PST           12.63            621         0      Not Applicable
  01/24/2026 11 PM PST           12.63            621         0      Not Applicable
  01/25/2026 12 AM PST           12.63            621         0      Not Applicable
  01/25/2026 01 AM PST           12.63            621         0      Not Applicable
  01/25/2026 02 AM PST           12.62            610         -      Not Applicable
  01/25/2026 03 AM PST           12.62            610         0      Not Applicable
  01/25/2026 04 AM PST           12.62            610         0      Not Applicable
  01/25/2026 05 AM PST           12.62            610         0      Not Applicable
  01/25/2026 06 AM PST           12.62            610         0      Not Applicable
  01/25/2026 07 AM PST           12.62            610         0      Not Applicable
  01/25/2026 08 AM PST           12.62            610         0      Not Applicable
  01/25/2026 09 AM PST           12.62            610         0      Not Applicable
  01/25/2026 10 AM PST           12.61            600         -      Not Applicable
  01/25/2026 11 AM PST           12.61            600         0      Not Applicable
  01/25/2026 12 PM PST           12.61            600         0      Not Applicable
  01/25/2026 01 PM PST           12.61            600         0      Not Applicable
  01/25/2026 02 PM PST           12.61            600         0      Not Applicable
  01/25/2026 03 PM PST           12.61            600         0      Not Applicable
  01/25/2026 04 PM PST           12.61            600         0      Not Applicable
  01/25/2026 05 PM PST           12.61            600         0      Not Applicable
  01/25/2026 06 PM PST           12.60            590         -      Not Applicable
  01/25/2026 07 PM PST           12.60            590         0      Not Applicable
  01/25/2026 08 PM PST           12.60            590         0      Not Applicable
  01/25/2026 09 PM PST           12.60            590         0      Not Applicable
  01/25/2026 10 PM PST           12.60            590         0      Not Applicable
  01/25/2026 11 PM PST           12.60            590         0      Not Applicable
  01/26/2026 12 AM PST           12.60            590         0      Not Applicable
  01/26/2026 01 AM PST           12.60            590         0      Not Applicable
  01/26/2026 02 AM PST           12.59            580         -      Not Applicable
  01/26/2026 03 AM PST           12.59            580         0      Not Applicable
  01/26/2026 04 AM PST           12.59            580         0      Not Applicable
  01/26/2026 05 AM PST           12.59            580         0      Not Applicable
  01/26/2026 06 AM PST           12.59            580         0      Not Applicable
  01/26/2026 07 AM PST           12.59            580         0      Not Applicable
  01/26/2026 08 AM PST           12.59            580         0      Not Applicable
  01/26/2026 09 AM PST           12.59            580         0      Not Applicable
  01/26/2026 10 AM PST           12.59            580         0      Not Applicable
  01/26/2026 11 AM PST           12.58            570         -      Not Applicable
  01/26/2026 12 PM PST           12.58            570         0      Not Applicable
  01/26/2026 01 PM PST           12.58            570         0      Not Applicable
  01/26/2026 02 PM PST           12.58            570         0      Not Applicable
  01/26/2026 03 PM PST           12.58            570         0      Not Applicable
  01/26/2026 04 PM PST           12.58            570         0      Not Applicable
  01/26/2026 05 PM PST           12.58            570         0      Not Applicable
  01/26/2026 06 PM PST           12.58            570         0      Not Applicable
  01/26/2026 07 PM PST           12.57            560         -      Not Applicable
  01/26/2026 08 PM PST           12.57            560         0      Not Applicable
  01/26/2026 09 PM PST           12.57            560         0      Not Applicable
  01/26/2026 10 PM PST           12.57            560         0      Not Applicable
  01/26/2026 11 PM PST           12.57            560         0      Not Applicable
  01/27/2026 12 AM PST           12.57            560         0      Not Applicable
  01/27/2026 01 AM PST           12.57            560         0      Not Applicable
  01/27/2026 02 AM PST           12.57            560         0      Not Applicable
  01/27/2026 03 AM PST           12.57            560         0      Not Applicable
  01/27/2026 04 AM PST           12.56            550         -      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.