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

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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: Sep 22 2023 at 8:17 AM PDTNext Issuance: Sep 23 2023 at 9:00 AM PDT
Monitor Stage: N/A Flood Stage: N/A

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Mattole River - Petrolia (MTOC1)
#
# File Generation Time:  09/22/2023 at 08:18 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  09/19/2023 at 02:00 PM PDT
# Maximum Observed Stage:                       11.1 Feet
# Maximum Observed Flow:                        12 cfs
#
# Earliest Date & Time of Maximum Forecast:     09/26/2023 at 11:00 AM PDT
# Maximum Forecast Stage:                       12.1 Feet
# Maximum Forecast Flow:                        124 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  09/17/2023 08 AM PDT            11.1             12                Not Applicable
  09/17/2023 09 AM PDT            11.1             12         -      Not Applicable
  09/17/2023 10 AM PDT            11.1             12         0      Not Applicable
  09/17/2023 11 AM PDT            11.1             12         0      Not Applicable
  09/17/2023 12 PM PDT            11.1             12         0      Not Applicable
  09/17/2023 01 PM PDT            11.1             12         0      Not Applicable
  09/17/2023 02 PM PDT            11.1             12         0      Not Applicable
  09/17/2023 03 PM PDT            11.1             11         -      Not Applicable
  09/17/2023 04 PM PDT            11.1             12         +      Not Applicable
  09/17/2023 05 PM PDT            11.1             12         0      Not Applicable
  09/17/2023 06 PM PDT            11.1             11         -      Not Applicable
  09/17/2023 07 PM PDT            11.1             12         +      Not Applicable
  09/17/2023 08 PM PDT            11.1             12         0      Not Applicable
  09/17/2023 09 PM PDT            11.1             12         0      Not Applicable
  09/17/2023 10 PM PDT            11.1             12         +      Not Applicable
  09/17/2023 11 PM PDT            11.1             12         0      Not Applicable
  09/18/2023 12 AM PDT            11.1             12         0      Not Applicable
  09/18/2023 01 AM PDT            11.1             12         0      Not Applicable
  09/18/2023 02 AM PDT            11.1             12         0      Not Applicable
  09/18/2023 03 AM PDT            11.1             12         0      Not Applicable
  09/18/2023 04 AM PDT            11.1             12         0      Not Applicable
  09/18/2023 05 AM PDT            11.1             12         0      Not Applicable
  09/18/2023 06 AM PDT            11.1             12         0      Not Applicable
  09/18/2023 07 AM PDT            11.1             12         0      Not Applicable
  09/18/2023 08 AM PDT            11.1             12         0      Not Applicable
  09/18/2023 09 AM PDT            11.1             12         0      Not Applicable
  09/18/2023 10 AM PDT            11.1             12         -      Not Applicable
  09/18/2023 11 AM PDT            11.1             12         0      Not Applicable
  09/18/2023 12 PM PDT            11.1             12         0      Not Applicable
  09/18/2023 01 PM PDT            11.1             12         0      Not Applicable
  09/18/2023 02 PM PDT            11.1             12         0      Not Applicable
  09/18/2023 03 PM PDT            11.1             12         0      Not Applicable
  09/18/2023 04 PM PDT            11.1             12         0      Not Applicable
  09/18/2023 05 PM PDT            11.1             12         0      Not Applicable
  09/18/2023 06 PM PDT            11.1             12         0      Not Applicable
  09/18/2023 07 PM PDT            11.1             12         0      Not Applicable
  09/18/2023 08 PM PDT            11.1             12         +      Not Applicable
  09/18/2023 09 PM PDT            11.1             12         0      Not Applicable
  09/18/2023 10 PM PDT            11.1             12         0      Not Applicable
  09/18/2023 11 PM PDT            11.1             12         0      Not Applicable
  09/19/2023 12 AM PDT            11.1             12         0      Not Applicable
  09/19/2023 01 AM PDT            11.1             12         0      Not Applicable
  09/19/2023 02 AM PDT            11.1             12         0      Not Applicable
  09/19/2023 03 AM PDT            11.1             12         -      Not Applicable
  09/19/2023 04 AM PDT            11.1             12         0      Not Applicable
  09/19/2023 05 AM PDT            11.1             12         0      Not Applicable
  09/19/2023 06 AM PDT            11.1             12         +      Not Applicable
  09/19/2023 07 AM PDT            11.1             12         0      Not Applicable
  09/19/2023 08 AM PDT            11.1             12         -      Not Applicable
  09/19/2023 09 AM PDT            11.1             12         +      Not Applicable
  09/19/2023 10 AM PDT            11.1             12         0      Not Applicable
  09/19/2023 11 AM PDT            11.1             12         -      Not Applicable
  09/19/2023 12 PM PDT            11.1             12         0      Not Applicable
  09/19/2023 01 PM PDT            11.1             12         0      Not Applicable
  09/19/2023 02 PM PDT            11.1             12         +      Not Applicable
  09/19/2023 03 PM PDT            11.1             12         -      Not Applicable
  09/19/2023 04 PM PDT            11.1             12         0      Not Applicable
  09/19/2023 05 PM PDT            11.1             12         0      Not Applicable
  09/19/2023 06 PM PDT            11.1             12         0      Not Applicable
  09/19/2023 07 PM PDT            11.1             12         0      Not Applicable
  09/19/2023 08 PM PDT            11.1             11         -      Not Applicable
  09/19/2023 09 PM PDT            11.1             11         0      Not Applicable
  09/19/2023 10 PM PDT            11.1             12         +      Not Applicable
  09/19/2023 11 PM PDT            11.1             12         0      Not Applicable
  09/20/2023 12 AM PDT            11.1             12         0      Not Applicable
  09/20/2023 01 AM PDT            11.1             12         0      Not Applicable
  09/20/2023 02 AM PDT            11.1             12         0      Not Applicable
  09/20/2023 03 AM PDT            11.1             12         0      Not Applicable
  09/20/2023 04 AM PDT            11.1             12         0      Not Applicable
  09/20/2023 05 AM PDT            11.1             12         0      Not Applicable
  09/20/2023 06 AM PDT            11.1             12         0      Not Applicable
  09/20/2023 07 AM PDT            11.1             12         0      Not Applicable
  09/20/2023 08 AM PDT            11.1             12         0      Not Applicable
  09/20/2023 09 AM PDT            11.1             12         0      Not Applicable
  09/20/2023 10 AM PDT            11.1             12         0      Not Applicable
  09/20/2023 11 AM PDT            11.1             12         0      Not Applicable
  09/20/2023 12 PM PDT            11.1             12         0      Not Applicable
  09/20/2023 01 PM PDT            11.1             12         0      Not Applicable
  09/20/2023 02 PM PDT            11.1             11         -      Not Applicable
  09/20/2023 03 PM PDT            11.1             10         -      Not Applicable
  09/20/2023 04 PM PDT            11.1             10         0      Not Applicable
  09/20/2023 05 PM PDT            11.1             11         +      Not Applicable
  09/20/2023 06 PM PDT            11.1             11         0      Not Applicable
  09/20/2023 07 PM PDT            11.1             12         +      Not Applicable
  09/20/2023 08 PM PDT            11.1             11         -      Not Applicable
  09/20/2023 09 PM PDT            11.1             11         0      Not Applicable
  09/20/2023 10 PM PDT            11.1             11         0      Not Applicable
  09/20/2023 11 PM PDT            11.1             11         0      Not Applicable
  09/21/2023 12 AM PDT            11.1             11         0      Not Applicable
  09/21/2023 01 AM PDT            11.1             12         +      Not Applicable
  09/21/2023 02 AM PDT            11.1             12         0      Not Applicable
  09/21/2023 03 AM PDT            11.1             11         -      Not Applicable
  09/21/2023 04 AM PDT            11.1             11         0      Not Applicable
  09/21/2023 05 AM PDT            11.1             11         0      Not Applicable
  09/21/2023 06 AM PDT            11.1             11         0      Not Applicable
  09/21/2023 07 AM PDT            11.1             11         0      Not Applicable
  09/21/2023 08 AM PDT            11.1             11         0      Not Applicable
  09/21/2023 09 AM PDT            11.1             11         0      Not Applicable
  09/21/2023 10 AM PDT            11.1             11         0      Not Applicable
  09/21/2023 11 AM PDT            11.1             11         0      Not Applicable
  09/21/2023 12 PM PDT            11.1             11         0      Not Applicable
  09/21/2023 01 PM PDT            11.1             11         0      Not Applicable
  09/21/2023 02 PM PDT            11.1             11         0      Not Applicable
  09/21/2023 03 PM PDT            11.1             11         0      Not Applicable
  09/21/2023 04 PM PDT            11.1             11         0      Not Applicable
  09/21/2023 05 PM PDT            11.1             11         0      Not Applicable
  09/21/2023 06 PM PDT            11.1             11         0      Not Applicable
  09/21/2023 07 PM PDT            11.1              9         -      Not Applicable
  09/21/2023 08 PM PDT            11.1             11         +      Not Applicable
  09/21/2023 09 PM PDT            11.1             10         -      Not Applicable
  09/21/2023 10 PM PDT            11.1             11         +      Not Applicable
  09/21/2023 11 PM PDT            11.1             11         0      Not Applicable
  09/22/2023 12 AM PDT            11.1             11         0      Not Applicable
  09/22/2023 01 AM PDT            11.1             11         0      Not Applicable
  09/22/2023 02 AM PDT            11.1             11         0      Not Applicable
  09/22/2023 03 AM PDT            11.1             11         0      Not Applicable
  09/22/2023 04 AM PDT            11.1             11         0      Not Applicable
  09/22/2023 05 AM PDT            11.1             11         0      Not Applicable
  09/22/2023 06 AM PDT            11.1             11         0      Not Applicable
  09/22/2023 07 AM PDT            11.1             11         0      Not Applicable
  09/22/2023 08 AM PDT            11.1             11         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  09/22/2023 09 AM PDT            11.1             11                Not Applicable
  09/22/2023 10 AM PDT            11.1             11         0      Not Applicable
  09/22/2023 11 AM PDT            11.1             11         0      Not Applicable
  09/22/2023 12 PM PDT            11.1             11         0      Not Applicable
  09/22/2023 01 PM PDT            11.1             11         0      Not Applicable
  09/22/2023 02 PM PDT            11.1             11         0      Not Applicable
  09/22/2023 03 PM PDT            11.1             11         0      Not Applicable
  09/22/2023 04 PM PDT            11.1             11         0      Not Applicable
  09/22/2023 05 PM PDT            11.1             11         0      Not Applicable
  09/22/2023 06 PM PDT            11.1             11         0      Not Applicable
  09/22/2023 07 PM PDT            11.1             11         0      Not Applicable
  09/22/2023 08 PM PDT            11.1             11         0      Not Applicable
  09/22/2023 09 PM PDT            11.1             11         0      Not Applicable
  09/22/2023 10 PM PDT            11.1             11         0      Not Applicable
  09/22/2023 11 PM PDT            11.1             11         0      Not Applicable
  09/23/2023 12 AM PDT            11.1             11         0      Not Applicable
  09/23/2023 01 AM PDT            11.1             11         0      Not Applicable
  09/23/2023 02 AM PDT            11.1             11         0      Not Applicable
  09/23/2023 03 AM PDT            11.1             11         0      Not Applicable
  09/23/2023 04 AM PDT            11.1             11         0      Not Applicable
  09/23/2023 05 AM PDT            11.1             11         0      Not Applicable
  09/23/2023 06 AM PDT            11.1             11         0      Not Applicable
  09/23/2023 07 AM PDT            11.1             11         0      Not Applicable
  09/23/2023 08 AM PDT            11.1             11         0      Not Applicable
  09/23/2023 09 AM PDT            11.1             11         0      Not Applicable
  09/23/2023 10 AM PDT            11.1             11         0      Not Applicable
  09/23/2023 11 AM PDT            11.1             11         0      Not Applicable
  09/23/2023 12 PM PDT            11.1             11         0      Not Applicable
  09/23/2023 01 PM PDT            11.1             11         0      Not Applicable
  09/23/2023 02 PM PDT            11.1             11         0      Not Applicable
  09/23/2023 03 PM PDT            11.1             11         0      Not Applicable
  09/23/2023 04 PM PDT            11.1             11         0      Not Applicable
  09/23/2023 05 PM PDT            11.1             11         0      Not Applicable
  09/23/2023 06 PM PDT            11.1             11         0      Not Applicable
  09/23/2023 07 PM PDT            11.1             11         0      Not Applicable
  09/23/2023 08 PM PDT            11.1             11         0      Not Applicable
  09/23/2023 09 PM PDT            11.1             11         0      Not Applicable
  09/23/2023 10 PM PDT            11.1             11         0      Not Applicable
  09/23/2023 11 PM PDT            11.1             11         0      Not Applicable
  09/24/2023 12 AM PDT            11.1             11         0      Not Applicable
  09/24/2023 01 AM PDT            11.1             11         0      Not Applicable
  09/24/2023 02 AM PDT            11.1             11         0      Not Applicable
  09/24/2023 03 AM PDT            11.1             11         0      Not Applicable
  09/24/2023 04 AM PDT            11.1             11         0      Not Applicable
  09/24/2023 05 AM PDT            11.1             11         0      Not Applicable
  09/24/2023 06 AM PDT            11.1             11         0      Not Applicable
  09/24/2023 07 AM PDT            11.1             11         0      Not Applicable
  09/24/2023 08 AM PDT            11.1             11         0      Not Applicable
  09/24/2023 09 AM PDT            11.1             11         0      Not Applicable
  09/24/2023 10 AM PDT            11.1             11         0      Not Applicable
  09/24/2023 11 AM PDT            11.1             11         0      Not Applicable
  09/24/2023 12 PM PDT            11.1             11         0      Not Applicable
  09/24/2023 01 PM PDT            11.1             11         0      Not Applicable
  09/24/2023 02 PM PDT            11.1             11         0      Not Applicable
  09/24/2023 03 PM PDT            11.1             11         0      Not Applicable
  09/24/2023 04 PM PDT            11.1             11         0      Not Applicable
  09/24/2023 05 PM PDT            11.1             11         0      Not Applicable
  09/24/2023 06 PM PDT            11.1             11         0      Not Applicable
  09/24/2023 07 PM PDT            11.1             11         0      Not Applicable
  09/24/2023 08 PM PDT            11.1             11         0      Not Applicable
  09/24/2023 09 PM PDT            11.1             11         0      Not Applicable
  09/24/2023 10 PM PDT            11.1             11         0      Not Applicable
  09/24/2023 11 PM PDT            11.1             11         0      Not Applicable
  09/25/2023 12 AM PDT            11.1             11         0      Not Applicable
  09/25/2023 01 AM PDT            11.1             11         0      Not Applicable
  09/25/2023 02 AM PDT            11.1             11         0      Not Applicable
  09/25/2023 03 AM PDT            11.1             11         0      Not Applicable
  09/25/2023 04 AM PDT            11.1             11         0      Not Applicable
  09/25/2023 05 AM PDT            11.1             11         0      Not Applicable
  09/25/2023 06 AM PDT            11.1             11         0      Not Applicable
  09/25/2023 07 AM PDT            11.1             12         +      Not Applicable
  09/25/2023 08 AM PDT            11.1             12         0      Not Applicable
  09/25/2023 09 AM PDT            11.1             12         +      Not Applicable
  09/25/2023 10 AM PDT            11.1             12         0      Not Applicable
  09/25/2023 11 AM PDT            11.1             13         +      Not Applicable
  09/25/2023 12 PM PDT            11.1             14         +      Not Applicable
  09/25/2023 01 PM PDT            11.1             14         0      Not Applicable
  09/25/2023 02 PM PDT            11.2             16         +      Not Applicable
  09/25/2023 03 PM PDT            11.2             17         +      Not Applicable
  09/25/2023 04 PM PDT            11.2             19         +      Not Applicable
  09/25/2023 05 PM PDT            11.2             20         +      Not Applicable
  09/25/2023 06 PM PDT            11.2             23         +      Not Applicable
  09/25/2023 07 PM PDT            11.3             26         +      Not Applicable
  09/25/2023 08 PM PDT            11.3             29         +      Not Applicable
  09/25/2023 09 PM PDT            11.4             33         +      Not Applicable
  09/25/2023 10 PM PDT            11.4             39         +      Not Applicable
  09/25/2023 11 PM PDT            11.5             44         +      Not Applicable
  09/26/2023 12 AM PDT            11.6             51         +      Not Applicable
  09/26/2023 01 AM PDT            11.6             58         +      Not Applicable
  09/26/2023 02 AM PDT            11.7             66         +      Not Applicable
  09/26/2023 03 AM PDT            11.8             74         +      Not Applicable
  09/26/2023 04 AM PDT            11.8             82         +      Not Applicable
  09/26/2023 05 AM PDT            11.9             91         +      Not Applicable
  09/26/2023 06 AM PDT            11.9             99         +      Not Applicable
  09/26/2023 07 AM PDT            12.0            106         +      Not Applicable
  09/26/2023 08 AM PDT            12.0            113         +      Not Applicable
  09/26/2023 09 AM PDT            12.0            118         +      Not Applicable
  09/26/2023 10 AM PDT            12.1            122         +      Not Applicable
  09/26/2023 11 AM PDT            12.1            124         +      Not Applicable
  09/26/2023 12 PM PDT            12.1            124         0      Not Applicable
  09/26/2023 01 PM PDT            12.1            122         -      Not Applicable
  09/26/2023 02 PM PDT            12.0            120         -      Not Applicable
  09/26/2023 03 PM PDT            12.0            117         -      Not Applicable
  09/26/2023 04 PM PDT            12.0            113         -      Not Applicable
  09/26/2023 05 PM PDT            12.0            109         -      Not Applicable
  09/26/2023 06 PM PDT            12.0            106         -      Not Applicable
  09/26/2023 07 PM PDT            11.9            101         -      Not Applicable
  09/26/2023 08 PM PDT            11.9             96         -      Not Applicable
  09/26/2023 09 PM PDT            11.9             91         -      Not Applicable
  09/26/2023 10 PM PDT            11.8             87         -      Not Applicable
  09/26/2023 11 PM PDT            11.8             81         -      Not Applicable
  09/27/2023 12 AM PDT            11.8             77         -      Not Applicable
  09/27/2023 01 AM PDT            11.7             72         -      Not Applicable
  09/27/2023 02 AM PDT            11.7             68         -      Not Applicable
  09/27/2023 03 AM PDT            11.7             65         -      Not Applicable
  09/27/2023 04 AM PDT            11.7             61         -      Not Applicable
  09/27/2023 05 AM PDT            11.6             58         -      Not Applicable
  09/27/2023 06 AM PDT            11.6             55         -      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.