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

 | 

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: Apr 28 2025 at 8:10 AM PDTNext Issuance: Apr 29 2025 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:  04/28/2025 at 08:11 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/23/2025 at 09:00 AM PDT
# Maximum Observed Stage:                       13.44 Feet
# Maximum Observed Flow:                        1533 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/28/2025 at 09:00 AM PDT
# Maximum Forecast Stage:                       13.31 Feet
# Maximum Forecast Flow:                        1351 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/23/2025 08 AM PDT           13.44           1533                Not Applicable
  04/23/2025 09 AM PDT           13.44           1533         0      Not Applicable
  04/23/2025 10 AM PDT           13.43           1518         -      Not Applicable
  04/23/2025 11 AM PDT           13.43           1518         0      Not Applicable
  04/23/2025 12 PM PDT           13.43           1518         0      Not Applicable
  04/23/2025 01 PM PDT           13.43           1518         0      Not Applicable
  04/23/2025 02 PM PDT           13.43           1518         0      Not Applicable
  04/23/2025 03 PM PDT           13.43           1518         0      Not Applicable
  04/23/2025 04 PM PDT           13.43           1518         0      Not Applicable
  04/23/2025 05 PM PDT           13.42           1503         -      Not Applicable
  04/23/2025 06 PM PDT           13.43           1518         +      Not Applicable
  04/23/2025 07 PM PDT           13.42           1503         -      Not Applicable
  04/23/2025 08 PM PDT           13.42           1503         0      Not Applicable
  04/23/2025 09 PM PDT           13.42           1503         0      Not Applicable
  04/23/2025 10 PM PDT           13.42           1503         0      Not Applicable
  04/23/2025 11 PM PDT           13.41           1489         -      Not Applicable
  04/24/2025 12 AM PDT           13.41           1489         0      Not Applicable
  04/24/2025 01 AM PDT           13.41           1489         0      Not Applicable
  04/24/2025 02 AM PDT           13.41           1489         0      Not Applicable
  04/24/2025 03 AM PDT           13.41           1489         0      Not Applicable
  04/24/2025 04 AM PDT           13.40           1475         -      Not Applicable
  04/24/2025 05 AM PDT           13.41           1489         +      Not Applicable
  04/24/2025 06 AM PDT           13.41           1489         0      Not Applicable
  04/24/2025 07 AM PDT           13.40           1475         -      Not Applicable
  04/24/2025 08 AM PDT           13.40           1475         0      Not Applicable
  04/24/2025 09 AM PDT           13.40           1475         0      Not Applicable
  04/24/2025 10 AM PDT           13.40           1475         0      Not Applicable
  04/24/2025 11 AM PDT           13.40           1475         0      Not Applicable
  04/24/2025 12 PM PDT           13.40           1475         0      Not Applicable
  04/24/2025 01 PM PDT           13.40           1475         0      Not Applicable
  04/24/2025 02 PM PDT           13.39           1461         -      Not Applicable
  04/24/2025 03 PM PDT           13.40           1475         +      Not Applicable
  04/24/2025 04 PM PDT           13.40           1475         0      Not Applicable
  04/24/2025 05 PM PDT           13.39           1461         -      Not Applicable
  04/24/2025 06 PM PDT           13.39           1461         0      Not Applicable
  04/24/2025 07 PM PDT           13.39           1461         0      Not Applicable
  04/24/2025 08 PM PDT           13.39           1461         0      Not Applicable
  04/24/2025 09 PM PDT           13.39           1461         0      Not Applicable
  04/24/2025 10 PM PDT           13.39           1461         0      Not Applicable
  04/24/2025 11 PM PDT           13.39           1461         0      Not Applicable
  04/25/2025 12 AM PDT           13.39           1461         0      Not Applicable
  04/25/2025 01 AM PDT           13.39           1461         0      Not Applicable
  04/25/2025 02 AM PDT           13.38           1447         -      Not Applicable
  04/25/2025 03 AM PDT           13.38           1447         0      Not Applicable
  04/25/2025 04 AM PDT           13.38           1447         0      Not Applicable
  04/25/2025 05 AM PDT           13.38           1447         0      Not Applicable
  04/25/2025 06 AM PDT           13.38           1447         0      Not Applicable
  04/25/2025 07 AM PDT           13.38           1447         0      Not Applicable
  04/25/2025 08 AM PDT           13.37           1433         -      Not Applicable
  04/25/2025 09 AM PDT           13.37           1433         0      Not Applicable
  04/25/2025 10 AM PDT           13.38           1447         +      Not Applicable
  04/25/2025 11 AM PDT           13.38           1447         0      Not Applicable
  04/25/2025 12 PM PDT           13.37           1433         -      Not Applicable
  04/25/2025 01 PM PDT           13.38           1447         +      Not Applicable
  04/25/2025 02 PM PDT           13.37           1433         -      Not Applicable
  04/25/2025 03 PM PDT           13.37           1433         0      Not Applicable
  04/25/2025 04 PM PDT           13.38           1447         +      Not Applicable
  04/25/2025 05 PM PDT           13.37           1433         -      Not Applicable
  04/25/2025 06 PM PDT           13.37           1433         0      Not Applicable
  04/25/2025 07 PM PDT           13.37           1433         0      Not Applicable
  04/25/2025 08 PM PDT           13.37           1433         0      Not Applicable
  04/25/2025 09 PM PDT           13.37           1433         0      Not Applicable
  04/25/2025 10 PM PDT           13.37           1433         0      Not Applicable
  04/25/2025 11 PM PDT           13.37           1433         0      Not Applicable
  04/26/2025 12 AM PDT           13.37           1433         0      Not Applicable
  04/26/2025 01 AM PDT           13.37           1433         0      Not Applicable
  04/26/2025 02 AM PDT           13.37           1433         0      Not Applicable
  04/26/2025 03 AM PDT           13.36           1420         -      Not Applicable
  04/26/2025 04 AM PDT           13.36           1420         0      Not Applicable
  04/26/2025 05 AM PDT           13.37           1433         +      Not Applicable
  04/26/2025 06 AM PDT           13.38           1447         +      Not Applicable
  04/26/2025 07 AM PDT           13.38           1447         0      Not Applicable
  04/26/2025 08 AM PDT           13.37           1433         -      Not Applicable
  04/26/2025 09 AM PDT           13.37           1433         0      Not Applicable
  04/26/2025 10 AM PDT           13.38           1447         +      Not Applicable
  04/26/2025 11 AM PDT           13.37           1433         -      Not Applicable
  04/26/2025 12 PM PDT           13.37           1433         0      Not Applicable
  04/26/2025 01 PM PDT           13.37           1433         0      Not Applicable
  04/26/2025 02 PM PDT           13.37           1433         0      Not Applicable
  04/26/2025 03 PM PDT           13.36           1420         -      Not Applicable
  04/26/2025 04 PM PDT           13.36           1420         0      Not Applicable
  04/26/2025 05 PM PDT           13.36           1420         0      Not Applicable
  04/26/2025 06 PM PDT           13.36           1420         0      Not Applicable
  04/26/2025 07 PM PDT           13.35           1406         -      Not Applicable
  04/26/2025 08 PM PDT           13.36           1420         +      Not Applicable
  04/26/2025 09 PM PDT           13.36           1420         0      Not Applicable
  04/26/2025 10 PM PDT           13.36           1420         0      Not Applicable
  04/26/2025 11 PM PDT           13.35           1406         -      Not Applicable
  04/27/2025 12 AM PDT           13.35           1406         0      Not Applicable
  04/27/2025 01 AM PDT           13.35           1406         0      Not Applicable
  04/27/2025 02 AM PDT           13.35           1406         0      Not Applicable
  04/27/2025 03 AM PDT           13.35           1406         0      Not Applicable
  04/27/2025 04 AM PDT           13.35           1406         0      Not Applicable
  04/27/2025 05 AM PDT           13.34           1392         -      Not Applicable
  04/27/2025 06 AM PDT           13.34           1392         0      Not Applicable
  04/27/2025 07 AM PDT           13.34           1392         0      Not Applicable
  04/27/2025 08 AM PDT           13.34           1392         0      Not Applicable
  04/27/2025 09 AM PDT           13.34           1392         0      Not Applicable
  04/27/2025 10 AM PDT           13.34           1392         0      Not Applicable
  04/27/2025 11 AM PDT           13.34           1392         0      Not Applicable
  04/27/2025 12 PM PDT           13.35           1406         +      Not Applicable
  04/27/2025 01 PM PDT           13.34           1392         -      Not Applicable
  04/27/2025 02 PM PDT           13.33           1379         -      Not Applicable
  04/27/2025 03 PM PDT           13.34           1392         +      Not Applicable
  04/27/2025 04 PM PDT           13.33           1379         -      Not Applicable
  04/27/2025 05 PM PDT           13.33           1379         0      Not Applicable
  04/27/2025 06 PM PDT           13.33           1379         0      Not Applicable
  04/27/2025 07 PM PDT           13.33           1379         0      Not Applicable
  04/27/2025 08 PM PDT           13.33           1379         0      Not Applicable
  04/27/2025 09 PM PDT           13.32           1365         -      Not Applicable
  04/27/2025 10 PM PDT           13.32           1365         0      Not Applicable
  04/27/2025 11 PM PDT           13.32           1365         0      Not Applicable
  04/28/2025 12 AM PDT           13.32           1365         0      Not Applicable
  04/28/2025 01 AM PDT           13.32           1365         0      Not Applicable
  04/28/2025 02 AM PDT           13.31           1351         -      Not Applicable
  04/28/2025 03 AM PDT           13.31           1351         0      Not Applicable
  04/28/2025 04 AM PDT           13.31           1351         0      Not Applicable
  04/28/2025 05 AM PDT           13.31           1351         0      Not Applicable
  04/28/2025 06 AM PDT           13.31           1351         0      Not Applicable
  04/28/2025 07 AM PDT           13.31           1351         0      Not Applicable
  04/28/2025 08 AM PDT           13.31           1351         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/28/2025 09 AM PDT           13.31           1351                Not Applicable
  04/28/2025 10 AM PDT           13.30           1338         -      Not Applicable
  04/28/2025 11 AM PDT           13.30           1338         0      Not Applicable
  04/28/2025 12 PM PDT           13.30           1338         0      Not Applicable
  04/28/2025 01 PM PDT           13.30           1338         0      Not Applicable
  04/28/2025 02 PM PDT           13.30           1338         0      Not Applicable
  04/28/2025 03 PM PDT           13.30           1338         0      Not Applicable
  04/28/2025 04 PM PDT           13.30           1338         0      Not Applicable
  04/28/2025 05 PM PDT           13.29           1324         -      Not Applicable
  04/28/2025 06 PM PDT           13.29           1324         0      Not Applicable
  04/28/2025 07 PM PDT           13.29           1324         0      Not Applicable
  04/28/2025 08 PM PDT           13.29           1324         0      Not Applicable
  04/28/2025 09 PM PDT           13.29           1324         0      Not Applicable
  04/28/2025 10 PM PDT           13.29           1324         0      Not Applicable
  04/28/2025 11 PM PDT           13.29           1324         0      Not Applicable
  04/29/2025 12 AM PDT           13.29           1324         0      Not Applicable
  04/29/2025 01 AM PDT           13.29           1324         0      Not Applicable
  04/29/2025 02 AM PDT           13.28           1311         -      Not Applicable
  04/29/2025 03 AM PDT           13.28           1311         0      Not Applicable
  04/29/2025 04 AM PDT           13.28           1311         0      Not Applicable
  04/29/2025 05 AM PDT           13.28           1311         0      Not Applicable
  04/29/2025 06 AM PDT           13.28           1311         0      Not Applicable
  04/29/2025 07 AM PDT           13.28           1311         0      Not Applicable
  04/29/2025 08 AM PDT           13.28           1311         0      Not Applicable
  04/29/2025 09 AM PDT           13.28           1311         0      Not Applicable
  04/29/2025 10 AM PDT           13.27           1297         -      Not Applicable
  04/29/2025 11 AM PDT           13.27           1297         0      Not Applicable
  04/29/2025 12 PM PDT           13.27           1297         0      Not Applicable
  04/29/2025 01 PM PDT           13.27           1297         0      Not Applicable
  04/29/2025 02 PM PDT           13.27           1297         0      Not Applicable
  04/29/2025 03 PM PDT           13.27           1297         0      Not Applicable
  04/29/2025 04 PM PDT           13.27           1297         0      Not Applicable
  04/29/2025 05 PM PDT           13.27           1297         0      Not Applicable
  04/29/2025 06 PM PDT           13.27           1297         0      Not Applicable
  04/29/2025 07 PM PDT           13.26           1284         -      Not Applicable
  04/29/2025 08 PM PDT           13.26           1284         0      Not Applicable
  04/29/2025 09 PM PDT           13.26           1284         0      Not Applicable
  04/29/2025 10 PM PDT           13.26           1284         0      Not Applicable
  04/29/2025 11 PM PDT           13.26           1284         0      Not Applicable
  04/30/2025 12 AM PDT           13.26           1284         0      Not Applicable
  04/30/2025 01 AM PDT           13.26           1284         0      Not Applicable
  04/30/2025 02 AM PDT           13.26           1284         0      Not Applicable
  04/30/2025 03 AM PDT           13.26           1284         0      Not Applicable
  04/30/2025 04 AM PDT           13.25           1270         -      Not Applicable
  04/30/2025 05 AM PDT           13.25           1270         0      Not Applicable
  04/30/2025 06 AM PDT           13.25           1270         0      Not Applicable
  04/30/2025 07 AM PDT           13.25           1270         0      Not Applicable
  04/30/2025 08 AM PDT           13.25           1270         0      Not Applicable
  04/30/2025 09 AM PDT           13.25           1270         0      Not Applicable
  04/30/2025 10 AM PDT           13.25           1270         0      Not Applicable
  04/30/2025 11 AM PDT           13.24           1257         -      Not Applicable
  04/30/2025 12 PM PDT           13.24           1257         0      Not Applicable
  04/30/2025 01 PM PDT           13.24           1257         0      Not Applicable
  04/30/2025 02 PM PDT           13.24           1257         0      Not Applicable
  04/30/2025 03 PM PDT           13.24           1257         0      Not Applicable
  04/30/2025 04 PM PDT           13.24           1257         0      Not Applicable
  04/30/2025 05 PM PDT           13.24           1257         0      Not Applicable
  04/30/2025 06 PM PDT           13.24           1257         0      Not Applicable
  04/30/2025 07 PM PDT           13.24           1257         0      Not Applicable
  04/30/2025 08 PM PDT           13.23           1244         -      Not Applicable
  04/30/2025 09 PM PDT           13.23           1244         0      Not Applicable
  04/30/2025 10 PM PDT           13.23           1244         0      Not Applicable
  04/30/2025 11 PM PDT           13.23           1244         0      Not Applicable
  05/01/2025 12 AM PDT           13.23           1244         0      Not Applicable
  05/01/2025 01 AM PDT           13.23           1244         0      Not Applicable
  05/01/2025 02 AM PDT           13.23           1244         0      Not Applicable
  05/01/2025 03 AM PDT           13.23           1244         0      Not Applicable
  05/01/2025 04 AM PDT           13.23           1244         0      Not Applicable
  05/01/2025 05 AM PDT           13.22           1230         -      Not Applicable
  05/01/2025 06 AM PDT           13.22           1230         0      Not Applicable
  05/01/2025 07 AM PDT           13.22           1230         0      Not Applicable
  05/01/2025 08 AM PDT           13.22           1230         0      Not Applicable
  05/01/2025 09 AM PDT           13.22           1230         0      Not Applicable
  05/01/2025 10 AM PDT           13.22           1230         0      Not Applicable
  05/01/2025 11 AM PDT           13.22           1230         0      Not Applicable
  05/01/2025 12 PM PDT           13.22           1230         0      Not Applicable
  05/01/2025 01 PM PDT           13.22           1230         0      Not Applicable
  05/01/2025 02 PM PDT           13.21           1217         -      Not Applicable
  05/01/2025 03 PM PDT           13.21           1217         0      Not Applicable
  05/01/2025 04 PM PDT           13.21           1217         0      Not Applicable
  05/01/2025 05 PM PDT           13.21           1217         0      Not Applicable
  05/01/2025 06 PM PDT           13.21           1217         0      Not Applicable
  05/01/2025 07 PM PDT           13.21           1217         0      Not Applicable
  05/01/2025 08 PM PDT           13.21           1217         0      Not Applicable
  05/01/2025 09 PM PDT           13.21           1217         0      Not Applicable
  05/01/2025 10 PM PDT           13.21           1217         0      Not Applicable
  05/01/2025 11 PM PDT           13.20           1205         -      Not Applicable
  05/02/2025 12 AM PDT           13.20           1205         0      Not Applicable
  05/02/2025 01 AM PDT           13.20           1205         0      Not Applicable
  05/02/2025 02 AM PDT           13.20           1205         0      Not Applicable
  05/02/2025 03 AM PDT           13.20           1205         0      Not Applicable
  05/02/2025 04 AM PDT           13.20           1205         0      Not Applicable
  05/02/2025 05 AM PDT           13.20           1205         0      Not Applicable
  05/02/2025 06 AM PDT           13.20           1205         0      Not Applicable
  05/02/2025 07 AM PDT           13.19           1194         -      Not Applicable
  05/02/2025 08 AM PDT           13.19           1194         0      Not Applicable
  05/02/2025 09 AM PDT           13.19           1194         0      Not Applicable
  05/02/2025 10 AM PDT           13.19           1194         0      Not Applicable
  05/02/2025 11 AM PDT           13.19           1194         0      Not Applicable
  05/02/2025 12 PM PDT           13.19           1194         0      Not Applicable
  05/02/2025 01 PM PDT           13.19           1194         0      Not Applicable
  05/02/2025 02 PM PDT           13.19           1194         0      Not Applicable
  05/02/2025 03 PM PDT           13.18           1182         -      Not Applicable
  05/02/2025 04 PM PDT           13.18           1182         0      Not Applicable
  05/02/2025 05 PM PDT           13.18           1182         0      Not Applicable
  05/02/2025 06 PM PDT           13.18           1182         0      Not Applicable
  05/02/2025 07 PM PDT           13.18           1182         0      Not Applicable
  05/02/2025 08 PM PDT           13.18           1182         0      Not Applicable
  05/02/2025 09 PM PDT           13.18           1182         0      Not Applicable
  05/02/2025 10 PM PDT           13.18           1182         0      Not Applicable
  05/02/2025 11 PM PDT           13.18           1182         0      Not Applicable
  05/03/2025 12 AM PDT           13.17           1170         -      Not Applicable
  05/03/2025 01 AM PDT           13.17           1170         0      Not Applicable
  05/03/2025 02 AM PDT           13.17           1170         0      Not Applicable
  05/03/2025 03 AM PDT           13.17           1170         0      Not Applicable
  05/03/2025 04 AM PDT           13.17           1170         0      Not Applicable
  05/03/2025 05 AM PDT           13.17           1170         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.