MATTOLE RIVER - PETROLIA (MTOC1)
Latitude: 40.31º NLongitude: 124.28º WElevation: 40 FeetForecast Type: Unofficial Location
Location: Humboldt County in CaliforniaBulletin Group: North CoastRiver Group: North Coast
Issuance Time: Jul 02 2026 at 6:58 AM PDTNext Issuance: Jul 03 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 - Petrolia (MTOC1)
#
# File Generation Time:  07/02/2026 at 06:59 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  06/27/2026 at 01:00 PM PDT
# Maximum Observed Stage:                       11.47 Feet
# Maximum Observed Flow:                        58 cfs
#
# Earliest Date & Time of Maximum Forecast:     07/02/2026 at 07:00 AM PDT
# Maximum Forecast Stage:                       11.41 Feet
# Maximum Forecast Flow:                        46 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  06/27/2026 06 AM PDT           11.46             57                Not Applicable
  06/27/2026 07 AM PDT           11.46             57         0      Not Applicable
  06/27/2026 08 AM PDT           11.46             57         0      Not Applicable
  06/27/2026 09 AM PDT           11.46             57         0      Not Applicable
  06/27/2026 10 AM PDT           11.46             57         0      Not Applicable
  06/27/2026 11 AM PDT           11.46             57         0      Not Applicable
  06/27/2026 12 PM PDT           11.45             55         -      Not Applicable
  06/27/2026 01 PM PDT           11.47             58         +      Not Applicable
  06/27/2026 02 PM PDT           11.46             57         -      Not Applicable
  06/27/2026 03 PM PDT           11.46             57         0      Not Applicable
  06/27/2026 04 PM PDT           11.46             57         0      Not Applicable
  06/27/2026 05 PM PDT           11.45             55         -      Not Applicable
  06/27/2026 06 PM PDT           11.46             57         +      Not Applicable
  06/27/2026 07 PM PDT           11.46             57         0      Not Applicable
  06/27/2026 08 PM PDT           11.45             55         -      Not Applicable
  06/27/2026 09 PM PDT           11.45             55         0      Not Applicable
  06/27/2026 10 PM PDT           11.45             55         0      Not Applicable
  06/27/2026 11 PM PDT           11.46             57         +      Not Applicable
  06/28/2026 12 AM PDT           11.45             55         -      Not Applicable
  06/28/2026 01 AM PDT           11.46             57         +      Not Applicable
  06/28/2026 02 AM PDT           11.45             55         -      Not Applicable
  06/28/2026 03 AM PDT           11.45             55         0      Not Applicable
  06/28/2026 04 AM PDT           11.45             55         0      Not Applicable
  06/28/2026 05 AM PDT           11.46             57         +      Not Applicable
  06/28/2026 06 AM PDT           11.46             57         0      Not Applicable
  06/28/2026 07 AM PDT           11.46             57         0      Not Applicable
  06/28/2026 08 AM PDT           11.46             57         0      Not Applicable
  06/28/2026 09 AM PDT           11.46             57         0      Not Applicable
  06/28/2026 10 AM PDT           11.46             57         0      Not Applicable
  06/28/2026 11 AM PDT           11.45             55         -      Not Applicable
  06/28/2026 12 PM PDT           11.46             57         +      Not Applicable
  06/28/2026 01 PM PDT           11.46             57         0      Not Applicable
  06/28/2026 02 PM PDT           11.46             57         0      Not Applicable
  06/28/2026 03 PM PDT           11.45             55         -      Not Applicable
  06/28/2026 04 PM PDT           11.45             55         0      Not Applicable
  06/28/2026 05 PM PDT           11.46             57         +      Not Applicable
  06/28/2026 06 PM PDT           11.45             55         -      Not Applicable
  06/28/2026 07 PM PDT           11.45             55         0      Not Applicable
  06/28/2026 08 PM PDT           11.45             55         0      Not Applicable
  06/28/2026 09 PM PDT           11.45             55         0      Not Applicable
  06/28/2026 10 PM PDT           11.46             57         +      Not Applicable
  06/28/2026 11 PM PDT           11.45             55         -      Not Applicable
  06/29/2026 12 AM PDT           11.44             52         -      Not Applicable
  06/29/2026 01 AM PDT           11.45             55         +      Not Applicable
  06/29/2026 02 AM PDT           11.45             55         0      Not Applicable
  06/29/2026 03 AM PDT           11.45             55         0      Not Applicable
  06/29/2026 04 AM PDT           11.46             57         +      Not Applicable
  06/29/2026 05 AM PDT           11.45             55         -      Not Applicable
  06/29/2026 06 AM PDT           11.45             55         0      Not Applicable
  06/29/2026 07 AM PDT           11.44             52         -      Not Applicable
  06/29/2026 08 AM PDT           11.46             57         +      Not Applicable
  06/29/2026 09 AM PDT           11.45             55         -      Not Applicable
  06/29/2026 10 AM PDT           11.45             55         0      Not Applicable
  06/29/2026 11 AM PDT           11.45             55         0      Not Applicable
  06/29/2026 12 PM PDT           11.45             55         0      Not Applicable
  06/29/2026 01 PM PDT           11.45             55         0      Not Applicable
  06/29/2026 02 PM PDT           11.45             55         0      Not Applicable
  06/29/2026 03 PM PDT           11.45             55         0      Not Applicable
  06/29/2026 04 PM PDT           11.43             50         -      Not Applicable
  06/29/2026 05 PM PDT           11.43             50         0      Not Applicable
  06/29/2026 06 PM PDT           11.44             52         +      Not Applicable
  06/29/2026 07 PM PDT           11.43             50         -      Not Applicable
  06/29/2026 08 PM PDT           11.42             48         -      Not Applicable
  06/29/2026 09 PM PDT           11.44             52         +      Not Applicable
  06/29/2026 10 PM PDT           11.43             50         -      Not Applicable
  06/29/2026 11 PM PDT           11.43             50         0      Not Applicable
  06/30/2026 12 AM PDT           11.44             52         +      Not Applicable
  06/30/2026 01 AM PDT           11.43             50         -      Not Applicable
  06/30/2026 02 AM PDT           11.43             50         0      Not Applicable
  06/30/2026 03 AM PDT           11.43             50         0      Not Applicable
  06/30/2026 04 AM PDT           11.44             52         +      Not Applicable
  06/30/2026 05 AM PDT           11.44             52         0      Not Applicable
  06/30/2026 06 AM PDT           11.44             52         0      Not Applicable
  06/30/2026 07 AM PDT           11.44             52         0      Not Applicable
  06/30/2026 08 AM PDT           11.44             52         0      Not Applicable
  06/30/2026 09 AM PDT           11.44             52         0      Not Applicable
  06/30/2026 10 AM PDT           11.44             52         0      Not Applicable
  06/30/2026 11 AM PDT           11.44             52         0      Not Applicable
  06/30/2026 12 PM PDT           11.42             48         -      Not Applicable
  06/30/2026 01 PM PDT           11.44             52         +      Not Applicable
  06/30/2026 02 PM PDT           11.44             52         0      Not Applicable
  06/30/2026 03 PM PDT           11.43             50         -      Not Applicable
  06/30/2026 04 PM PDT           11.43             50         0      Not Applicable
  06/30/2026 05 PM PDT           11.42             48         -      Not Applicable
  06/30/2026 06 PM PDT           11.41             46         -      Not Applicable
  06/30/2026 07 PM PDT           11.43             50         +      Not Applicable
  06/30/2026 08 PM PDT           11.43             50         0      Not Applicable
  06/30/2026 09 PM PDT           11.43             50         0      Not Applicable
  06/30/2026 10 PM PDT           11.42             48         -      Not Applicable
  06/30/2026 11 PM PDT           11.42             48         0      Not Applicable
  07/01/2026 12 AM PDT           11.42             48         0      Not Applicable
  07/01/2026 01 AM PDT           11.43             50         +      Not Applicable
  07/01/2026 02 AM PDT           11.42             48         -      Not Applicable
  07/01/2026 03 AM PDT           11.42             48         0      Not Applicable
  07/01/2026 04 AM PDT           11.42             48         0      Not Applicable
  07/01/2026 05 AM PDT           11.42             48         0      Not Applicable
  07/01/2026 06 AM PDT           11.42             48         0      Not Applicable
  07/01/2026 07 AM PDT           11.43             50         +      Not Applicable
  07/01/2026 08 AM PDT           11.43             50         0      Not Applicable
  07/01/2026 09 AM PDT           11.42             48         -      Not Applicable
  07/01/2026 10 AM PDT           11.42             48         0      Not Applicable
  07/01/2026 11 AM PDT           11.43             50         +      Not Applicable
  07/01/2026 12 PM PDT           11.42             48         -      Not Applicable
  07/01/2026 01 PM PDT           11.43             50         +      Not Applicable
  07/01/2026 02 PM PDT           11.42             48         -      Not Applicable
  07/01/2026 03 PM PDT           11.41             46         -      Not Applicable
  07/01/2026 04 PM PDT           11.40             44         -      Not Applicable
  07/01/2026 05 PM PDT           11.40             44         0      Not Applicable
  07/01/2026 06 PM PDT           11.42             48         +      Not Applicable
  07/01/2026 07 PM PDT           11.41             46         -      Not Applicable
  07/01/2026 08 PM PDT           11.40             44         -      Not Applicable
  07/01/2026 09 PM PDT           11.42             48         +      Not Applicable
  07/01/2026 10 PM PDT           11.41             46         -      Not Applicable
  07/01/2026 11 PM PDT           11.41             46         0      Not Applicable
  07/02/2026 12 AM PDT           11.42             48         +      Not Applicable
  07/02/2026 01 AM PDT           11.41             46         -      Not Applicable
  07/02/2026 02 AM PDT           11.41             46         0      Not Applicable
  07/02/2026 03 AM PDT           11.41             46         0      Not Applicable
  07/02/2026 04 AM PDT           11.41             46         0      Not Applicable
  07/02/2026 05 AM PDT           11.41             46         0      Not Applicable
  07/02/2026 06 AM PDT           11.41             46         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  07/02/2026 07 AM PDT           11.41             46                Not Applicable
  07/02/2026 08 AM PDT           11.41             46         0      Not Applicable
  07/02/2026 09 AM PDT           11.41             46         0      Not Applicable
  07/02/2026 10 AM PDT           11.41             46         0      Not Applicable
  07/02/2026 11 AM PDT           11.41             46         0      Not Applicable
  07/02/2026 12 PM PDT           11.41             46         0      Not Applicable
  07/02/2026 01 PM PDT           11.41             46         0      Not Applicable
  07/02/2026 02 PM PDT           11.41             46         0      Not Applicable
  07/02/2026 03 PM PDT           11.40             44         -      Not Applicable
  07/02/2026 04 PM PDT           11.40             44         0      Not Applicable
  07/02/2026 05 PM PDT           11.40             44         0      Not Applicable
  07/02/2026 06 PM PDT           11.40             44         0      Not Applicable
  07/02/2026 07 PM PDT           11.40             44         0      Not Applicable
  07/02/2026 08 PM PDT           11.40             44         0      Not Applicable
  07/02/2026 09 PM PDT           11.40             44         0      Not Applicable
  07/02/2026 10 PM PDT           11.40             44         0      Not Applicable
  07/02/2026 11 PM PDT           11.40             44         0      Not Applicable
  07/03/2026 12 AM PDT           11.40             44         0      Not Applicable
  07/03/2026 01 AM PDT           11.40             44         0      Not Applicable
  07/03/2026 02 AM PDT           11.40             44         0      Not Applicable
  07/03/2026 03 AM PDT           11.40             44         0      Not Applicable
  07/03/2026 04 AM PDT           11.40             44         0      Not Applicable
  07/03/2026 05 AM PDT           11.40             44         0      Not Applicable
  07/03/2026 06 AM PDT           11.40             44         0      Not Applicable
  07/03/2026 07 AM PDT           11.40             44         0      Not Applicable
  07/03/2026 08 AM PDT           11.40             44         0      Not Applicable
  07/03/2026 09 AM PDT           11.40             44         0      Not Applicable
  07/03/2026 10 AM PDT           11.40             44         0      Not Applicable
  07/03/2026 11 AM PDT           11.40             44         0      Not Applicable
  07/03/2026 12 PM PDT           11.40             44         0      Not Applicable
  07/03/2026 01 PM PDT           11.40             44         0      Not Applicable
  07/03/2026 02 PM PDT           11.40             44         0      Not Applicable
  07/03/2026 03 PM PDT           11.40             44         0      Not Applicable
  07/03/2026 04 PM PDT           11.40             44         0      Not Applicable
  07/03/2026 05 PM PDT           11.40             44         0      Not Applicable
  07/03/2026 06 PM PDT           11.40             44         0      Not Applicable
  07/03/2026 07 PM PDT           11.40             44         0      Not Applicable
  07/03/2026 08 PM PDT           11.40             44         0      Not Applicable
  07/03/2026 09 PM PDT           11.40             44         0      Not Applicable
  07/03/2026 10 PM PDT           11.40             44         0      Not Applicable
  07/03/2026 11 PM PDT           11.40             44         0      Not Applicable
  07/04/2026 12 AM PDT           11.40             44         0      Not Applicable
  07/04/2026 01 AM PDT           11.40             44         0      Not Applicable
  07/04/2026 02 AM PDT           11.40             44         0      Not Applicable
  07/04/2026 03 AM PDT           11.40             44         0      Not Applicable
  07/04/2026 04 AM PDT           11.40             44         0      Not Applicable
  07/04/2026 05 AM PDT           11.40             44         0      Not Applicable
  07/04/2026 06 AM PDT           11.40             44         0      Not Applicable
  07/04/2026 07 AM PDT           11.40             44         0      Not Applicable
  07/04/2026 08 AM PDT           11.39             42         -      Not Applicable
  07/04/2026 09 AM PDT           11.39             42         0      Not Applicable
  07/04/2026 10 AM PDT           11.39             42         0      Not Applicable
  07/04/2026 11 AM PDT           11.39             42         0      Not Applicable
  07/04/2026 12 PM PDT           11.39             42         0      Not Applicable
  07/04/2026 01 PM PDT           11.39             42         0      Not Applicable
  07/04/2026 02 PM PDT           11.39             42         0      Not Applicable
  07/04/2026 03 PM PDT           11.39             42         0      Not Applicable
  07/04/2026 04 PM PDT           11.39             42         0      Not Applicable
  07/04/2026 05 PM PDT           11.39             42         0      Not Applicable
  07/04/2026 06 PM PDT           11.39             42         0      Not Applicable
  07/04/2026 07 PM PDT           11.39             42         0      Not Applicable
  07/04/2026 08 PM PDT           11.39             42         0      Not Applicable
  07/04/2026 09 PM PDT           11.39             42         0      Not Applicable
  07/04/2026 10 PM PDT           11.39             42         0      Not Applicable
  07/04/2026 11 PM PDT           11.39             42         0      Not Applicable
  07/05/2026 12 AM PDT           11.39             42         0      Not Applicable
  07/05/2026 01 AM PDT           11.39             42         0      Not Applicable
  07/05/2026 02 AM PDT           11.39             42         0      Not Applicable
  07/05/2026 03 AM PDT           11.39             42         0      Not Applicable
  07/05/2026 04 AM PDT           11.39             42         0      Not Applicable
  07/05/2026 05 AM PDT           11.39             42         0      Not Applicable
  07/05/2026 06 AM PDT           11.39             42         0      Not Applicable
  07/05/2026 07 AM PDT           11.39             42         0      Not Applicable
  07/05/2026 08 AM PDT           11.39             42         0      Not Applicable
  07/05/2026 09 AM PDT           11.39             42         0      Not Applicable
  07/05/2026 10 AM PDT           11.39             42         0      Not Applicable
  07/05/2026 11 AM PDT           11.39             42         0      Not Applicable
  07/05/2026 12 PM PDT           11.39             42         0      Not Applicable
  07/05/2026 01 PM PDT           11.39             42         0      Not Applicable
  07/05/2026 02 PM PDT           11.39             42         0      Not Applicable
  07/05/2026 03 PM PDT           11.39             42         0      Not Applicable
  07/05/2026 04 PM PDT           11.39             42         0      Not Applicable
  07/05/2026 05 PM PDT           11.39             42         0      Not Applicable
  07/05/2026 06 PM PDT           11.39             42         0      Not Applicable
  07/05/2026 07 PM PDT           11.39             42         0      Not Applicable
  07/05/2026 08 PM PDT           11.39             42         0      Not Applicable
  07/05/2026 09 PM PDT           11.39             42         0      Not Applicable
  07/05/2026 10 PM PDT           11.39             42         0      Not Applicable
  07/05/2026 11 PM PDT           11.39             42         0      Not Applicable
  07/06/2026 12 AM PDT           11.39             42         0      Not Applicable
  07/06/2026 01 AM PDT           11.39             42         0      Not Applicable
  07/06/2026 02 AM PDT           11.39             42         0      Not Applicable
  07/06/2026 03 AM PDT           11.39             42         0      Not Applicable
  07/06/2026 04 AM PDT           11.39             42         0      Not Applicable
  07/06/2026 05 AM PDT           11.38             40         -      Not Applicable
  07/06/2026 06 AM PDT           11.38             40         0      Not Applicable
  07/06/2026 07 AM PDT           11.38             40         0      Not Applicable
  07/06/2026 08 AM PDT           11.38             40         0      Not Applicable
  07/06/2026 09 AM PDT           11.38             40         0      Not Applicable
  07/06/2026 10 AM PDT           11.38             40         0      Not Applicable
  07/06/2026 11 AM PDT           11.38             40         0      Not Applicable
  07/06/2026 12 PM PDT           11.38             40         0      Not Applicable
  07/06/2026 01 PM PDT           11.38             40         0      Not Applicable
  07/06/2026 02 PM PDT           11.38             40         0      Not Applicable
  07/06/2026 03 PM PDT           11.38             40         0      Not Applicable
  07/06/2026 04 PM PDT           11.38             40         0      Not Applicable
  07/06/2026 05 PM PDT           11.38             40         0      Not Applicable
  07/06/2026 06 PM PDT           11.38             40         0      Not Applicable
  07/06/2026 07 PM PDT           11.38             40         0      Not Applicable
  07/06/2026 08 PM PDT           11.38             40         0      Not Applicable
  07/06/2026 09 PM PDT           11.38             40         0      Not Applicable
  07/06/2026 10 PM PDT           11.38             40         0      Not Applicable
  07/06/2026 11 PM PDT           11.38             40         0      Not Applicable
  07/07/2026 12 AM PDT           11.38             40         0      Not Applicable
  07/07/2026 01 AM PDT           11.38             40         0      Not Applicable
  07/07/2026 02 AM PDT           11.38             40         0      Not Applicable
  07/07/2026 03 AM PDT           11.38             40         0      Not Applicable
  07/07/2026 04 AM PDT           11.38             40         0      Not Applicable
  07/07/2026 05 AM PDT           11.38             40         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.