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: Dec 26 2025 at 1:21 PM PSTNext Issuance: Dec 27 2025 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:  12/26/2025 at 01:23 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  12/21/2025 at 01:00 PM PST
# Maximum Observed Stage:                       26.29 Feet
# Maximum Observed Flow:                        30656 cfs
#
# Earliest Date & Time of Maximum Forecast:     12/26/2025 at 03:00 PM PST
# Maximum Forecast Stage:                       19.88 Feet
# Maximum Forecast Flow:                        13043 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  12/21/2025 01 PM PST           26.29          30656                Not Applicable
  12/21/2025 02 PM PST           26.06          29956         -      Not Applicable
  12/21/2025 03 PM PST           25.89          29441         -      Not Applicable
  12/21/2025 04 PM PST           25.55          28419         -      Not Applicable
  12/21/2025 05 PM PST           25.56          28449         +      Not Applicable
  12/21/2025 06 PM PST           25.43          28061         -      Not Applicable
  12/21/2025 07 PM PST           25.19          27348         -      Not Applicable
  12/21/2025 08 PM PST           24.83          26288         -      Not Applicable
  12/21/2025 09 PM PST           24.48          25269         -      Not Applicable
  12/21/2025 10 PM PST           23.75          23181         -      Not Applicable
  12/21/2025 11 PM PST           23.37          22113         -      Not Applicable
  12/22/2025 12 AM PST           22.60          19995         -      Not Applicable
  12/22/2025 01 AM PST           22.08          18598         -      Not Applicable
  12/22/2025 02 AM PST           21.60          17334         -      Not Applicable
  12/22/2025 03 AM PST           21.24          16402         -      Not Applicable
  12/22/2025 04 AM PST           20.76          15182         -      Not Applicable
  12/22/2025 05 AM PST           20.43          14359         -      Not Applicable
  12/22/2025 06 AM PST           20.06          13452         -      Not Applicable
  12/22/2025 07 AM PST           19.80          12869         -      Not Applicable
  12/22/2025 08 AM PST           19.49          12200         -      Not Applicable
  12/22/2025 09 AM PST           19.24          11668         -      Not Applicable
  12/22/2025 10 AM PST           18.96          11079         -      Not Applicable
  12/22/2025 11 AM PST           18.66          10458         -      Not Applicable
  12/22/2025 12 PM PST           18.43           9989         -      Not Applicable
  12/22/2025 01 PM PST           18.22           9566         -      Not Applicable
  12/22/2025 02 PM PST           17.87           8872         -      Not Applicable
  12/22/2025 03 PM PST           17.91           8951         +      Not Applicable
  12/22/2025 04 PM PST           17.69           8521         -      Not Applicable
  12/22/2025 05 PM PST           17.53           8212         -      Not Applicable
  12/22/2025 06 PM PST           17.38           7926         -      Not Applicable
  12/22/2025 07 PM PST           17.28           7736         -      Not Applicable
  12/22/2025 08 PM PST           17.13           7455         -      Not Applicable
  12/22/2025 09 PM PST           16.95           7120         -      Not Applicable
  12/22/2025 10 PM PST           16.82           6882         -      Not Applicable
  12/22/2025 11 PM PST           16.78           6809         -      Not Applicable
  12/23/2025 12 AM PST           16.54           6375         -      Not Applicable
  12/23/2025 01 AM PST           16.50           6304         -      Not Applicable
  12/23/2025 02 AM PST           16.45           6215         -      Not Applicable
  12/23/2025 03 AM PST           16.29           5932         -      Not Applicable
  12/23/2025 04 AM PST           16.26           5880         -      Not Applicable
  12/23/2025 05 AM PST           16.14           5671         -      Not Applicable
  12/23/2025 06 AM PST           16.03           5481         -      Not Applicable
  12/23/2025 07 AM PST           15.94           5327         -      Not Applicable
  12/23/2025 08 AM PST           15.95           5344         +      Not Applicable
  12/23/2025 09 AM PST           15.92           5293         -      Not Applicable
  12/23/2025 10 AM PST           15.89           5242         -      Not Applicable
  12/23/2025 11 AM PST           15.86           5192         -      Not Applicable
  12/23/2025 12 PM PST           15.94           5327         +      Not Applicable
  12/23/2025 01 PM PST           15.84           5158         -      Not Applicable
  12/23/2025 02 PM PST           15.94           5327         +      Not Applicable
  12/23/2025 03 PM PST           15.88           5225         -      Not Applicable
  12/23/2025 04 PM PST           15.88           5225         0      Not Applicable
  12/23/2025 05 PM PST           16.03           5481         +      Not Applicable
  12/23/2025 06 PM PST           16.17           5723         +      Not Applicable
  12/23/2025 07 PM PST           16.22           5810         +      Not Applicable
  12/23/2025 08 PM PST           16.19           5758         -      Not Applicable
  12/23/2025 09 PM PST           16.18           5740         -      Not Applicable
  12/23/2025 10 PM PST           16.12           5636         -      Not Applicable
  12/23/2025 11 PM PST           16.12           5636         0      Not Applicable
  12/24/2025 12 AM PST           16.28           5915         +      Not Applicable
  12/24/2025 01 AM PST           16.43           6179         +      Not Applicable
  12/24/2025 02 AM PST           16.88           6992         +      Not Applicable
  12/24/2025 03 AM PST           17.22           7623         +      Not Applicable
  12/24/2025 04 AM PST           17.54           8232         +      Not Applicable
  12/24/2025 05 AM PST           17.93           8990         +      Not Applicable
  12/24/2025 06 AM PST           18.55          10233         +      Not Applicable
  12/24/2025 07 AM PST           18.81          10768         +      Not Applicable
  12/24/2025 08 AM PST           18.69          10520         -      Not Applicable
  12/24/2025 09 AM PST           18.84          10830         +      Not Applicable
  12/24/2025 10 AM PST           19.02          11205         +      Not Applicable
  12/24/2025 11 AM PST           19.10          11372         +      Not Applicable
  12/24/2025 12 PM PST           18.97          11100         -      Not Applicable
  12/24/2025 01 PM PST           18.76          10664         -      Not Applicable
  12/24/2025 02 PM PST           18.58          10294         -      Not Applicable
  12/24/2025 03 PM PST           18.26           9646         -      Not Applicable
  12/24/2025 04 PM PST           18.10           9327         -      Not Applicable
  12/24/2025 05 PM PST           18.09           9307         -      Not Applicable
  12/24/2025 06 PM PST           17.83           8794         -      Not Applicable
  12/24/2025 07 PM PST           17.55           8251         -      Not Applicable
  12/24/2025 08 PM PST           17.54           8232         -      Not Applicable
  12/24/2025 09 PM PST           17.45           8059         -      Not Applicable
  12/24/2025 10 PM PST           17.29           7755         -      Not Applicable
  12/24/2025 11 PM PST           17.31           7793         +      Not Applicable
  12/25/2025 12 AM PST           17.17           7529         -      Not Applicable
  12/25/2025 01 AM PST           17.08           7361         -      Not Applicable
  12/25/2025 02 AM PST           17.01           7231         -      Not Applicable
  12/25/2025 03 AM PST           16.99           7194         -      Not Applicable
  12/25/2025 04 AM PST           16.94           7102         -      Not Applicable
  12/25/2025 05 AM PST           16.89           7010         -      Not Applicable
  12/25/2025 06 AM PST           16.88           6992         -      Not Applicable
  12/25/2025 07 AM PST           16.70           6663         -      Not Applicable
  12/25/2025 08 AM PST           16.75           6754         +      Not Applicable
  12/25/2025 09 AM PST           16.79           6827         +      Not Applicable
  12/25/2025 10 AM PST           16.82           6882         +      Not Applicable
  12/25/2025 11 AM PST           16.79           6827         -      Not Applicable
  12/25/2025 12 PM PST           16.75           6754         -      Not Applicable
  12/25/2025 01 PM PST           16.64           6555         -      Not Applicable
  12/25/2025 02 PM PST           16.58           6447         -      Not Applicable
  12/25/2025 03 PM PST           16.59           6465         +      Not Applicable
  12/25/2025 04 PM PST           16.60           6483         +      Not Applicable
  12/25/2025 05 PM PST           16.61           6501         +      Not Applicable
  12/25/2025 06 PM PST           16.61           6501         0      Not Applicable
  12/25/2025 07 PM PST           16.61           6501         0      Not Applicable
  12/25/2025 08 PM PST           16.62           6519         +      Not Applicable
  12/25/2025 09 PM PST           16.75           6754         +      Not Applicable
  12/25/2025 10 PM PST           16.91           7047         +      Not Applicable
  12/25/2025 11 PM PST           16.95           7120         +      Not Applicable
  12/26/2025 12 AM PST           17.10           7399         +      Not Applicable
  12/26/2025 01 AM PST           17.13           7455         +      Not Applicable
  12/26/2025 02 AM PST           16.89           7010         -      Not Applicable
  12/26/2025 03 AM PST           17.17           7529         +      Not Applicable
  12/26/2025 04 AM PST           17.22           7623         +      Not Applicable
  12/26/2025 05 AM PST           17.16           7511         -      Not Applicable
  12/26/2025 06 AM PST           17.51           8174         +      Not Applicable
  12/26/2025 07 AM PST           17.77           8677         +      Not Applicable
  12/26/2025 08 AM PST           18.19           9506         +      Not Applicable
  12/26/2025 09 AM PST           18.72          10582         +      Not Applicable
  12/26/2025 10 AM PST           19.19          11562         +      Not Applicable
  12/26/2025 11 AM PST           19.39          11986         +      Not Applicable
  12/26/2025 12 PM PST           19.65          12544         +      Not Applicable
  12/26/2025 01 PM PST           19.79          12847         +      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  12/26/2025 02 PM PST           19.87          13022                Not Applicable
  12/26/2025 03 PM PST           19.88          13043         +      Not Applicable
  12/26/2025 04 PM PST           19.84          12956         -      Not Applicable
  12/26/2025 05 PM PST           19.79          12847         -      Not Applicable
  12/26/2025 06 PM PST           19.72          12695         -      Not Applicable
  12/26/2025 07 PM PST           19.62          12479         -      Not Applicable
  12/26/2025 08 PM PST           19.50          12221         -      Not Applicable
  12/26/2025 09 PM PST           19.37          11944         -      Not Applicable
  12/26/2025 10 PM PST           19.22          11625         -      Not Applicable
  12/26/2025 11 PM PST           19.07          11309         -      Not Applicable
  12/27/2025 12 AM PST           18.90          10954         -      Not Applicable
  12/27/2025 01 AM PST           18.73          10602         -      Not Applicable
  12/27/2025 02 AM PST           18.56          10254         -      Not Applicable
  12/27/2025 03 AM PST           18.39           9908         -      Not Applicable
  12/27/2025 04 AM PST           18.22           9566         -      Not Applicable
  12/27/2025 05 AM PST           18.06           9247         -      Not Applicable
  12/27/2025 06 AM PST           17.91           8951         -      Not Applicable
  12/27/2025 07 AM PST           17.76           8657         -      Not Applicable
  12/27/2025 08 AM PST           17.61           8366         -      Not Applicable
  12/27/2025 09 AM PST           17.48           8117         -      Not Applicable
  12/27/2025 10 AM PST           17.34           7850         -      Not Applicable
  12/27/2025 11 AM PST           17.22           7623         -      Not Applicable
  12/27/2025 12 PM PST           17.12           7436         -      Not Applicable
  12/27/2025 01 PM PST           17.03           7268         -      Not Applicable
  12/27/2025 02 PM PST           16.94           7102         -      Not Applicable
  12/27/2025 03 PM PST           16.85           6937         -      Not Applicable
  12/27/2025 04 PM PST           16.77           6790         -      Not Applicable
  12/27/2025 05 PM PST           16.69           6645         -      Not Applicable
  12/27/2025 06 PM PST           16.61           6501         -      Not Applicable
  12/27/2025 07 PM PST           16.54           6375         -      Not Applicable
  12/27/2025 08 PM PST           16.46           6232         -      Not Applicable
  12/27/2025 09 PM PST           16.39           6108         -      Not Applicable
  12/27/2025 10 PM PST           16.33           6002         -      Not Applicable
  12/27/2025 11 PM PST           16.27           5897         -      Not Applicable
  12/28/2025 12 AM PST           16.20           5775         -      Not Applicable
  12/28/2025 01 AM PST           16.14           5671         -      Not Applicable
  12/28/2025 02 AM PST           16.09           5584         -      Not Applicable
  12/28/2025 03 AM PST           16.04           5498         -      Not Applicable
  12/28/2025 04 AM PST           15.99           5413         -      Not Applicable
  12/28/2025 05 AM PST           15.94           5327         -      Not Applicable
  12/28/2025 06 AM PST           15.89           5242         -      Not Applicable
  12/28/2025 07 AM PST           15.84           5158         -      Not Applicable
  12/28/2025 08 AM PST           15.79           5074         -      Not Applicable
  12/28/2025 09 AM PST           15.74           4990         -      Not Applicable
  12/28/2025 10 AM PST           15.70           4923         -      Not Applicable
  12/28/2025 11 AM PST           15.66           4857         -      Not Applicable
  12/28/2025 12 PM PST           15.61           4774         -      Not Applicable
  12/28/2025 01 PM PST           15.57           4708         -      Not Applicable
  12/28/2025 02 PM PST           15.53           4642         -      Not Applicable
  12/28/2025 03 PM PST           15.49           4577         -      Not Applicable
  12/28/2025 04 PM PST           15.45           4512         -      Not Applicable
  12/28/2025 05 PM PST           15.42           4463         -      Not Applicable
  12/28/2025 06 PM PST           15.38           4398         -      Not Applicable
  12/28/2025 07 PM PST           15.35           4350         -      Not Applicable
  12/28/2025 08 PM PST           15.31           4286         -      Not Applicable
  12/28/2025 09 PM PST           15.28           4238         -      Not Applicable
  12/28/2025 10 PM PST           15.25           4190         -      Not Applicable
  12/28/2025 11 PM PST           15.22           4142         -      Not Applicable
  12/29/2025 12 AM PST           15.19           4094         -      Not Applicable
  12/29/2025 01 AM PST           15.16           4047         -      Not Applicable
  12/29/2025 02 AM PST           15.13           4000         -      Not Applicable
  12/29/2025 03 AM PST           15.10           3953         -      Not Applicable
  12/29/2025 04 AM PST           15.07           3906         -      Not Applicable
  12/29/2025 05 AM PST           15.04           3859         -      Not Applicable
  12/29/2025 06 AM PST           15.01           3812         -      Not Applicable
  12/29/2025 07 AM PST           14.98           3766         -      Not Applicable
  12/29/2025 08 AM PST           14.96           3735         -      Not Applicable
  12/29/2025 09 AM PST           14.93           3689         -      Not Applicable
  12/29/2025 10 AM PST           14.90           3643         -      Not Applicable
  12/29/2025 11 AM PST           14.88           3612         -      Not Applicable
  12/29/2025 12 PM PST           14.85           3566         -      Not Applicable
  12/29/2025 01 PM PST           14.83           3536         -      Not Applicable
  12/29/2025 02 PM PST           14.80           3490         -      Not Applicable
  12/29/2025 03 PM PST           14.78           3460         -      Not Applicable
  12/29/2025 04 PM PST           14.76           3430         -      Not Applicable
  12/29/2025 05 PM PST           14.74           3400         -      Not Applicable
  12/29/2025 06 PM PST           14.71           3355         -      Not Applicable
  12/29/2025 07 PM PST           14.69           3325         -      Not Applicable
  12/29/2025 08 PM PST           14.67           3295         -      Not Applicable
  12/29/2025 09 PM PST           14.65           3265         -      Not Applicable
  12/29/2025 10 PM PST           14.63           3236         -      Not Applicable
  12/29/2025 11 PM PST           14.61           3206         -      Not Applicable
  12/30/2025 12 AM PST           14.59           3177         -      Not Applicable
  12/30/2025 01 AM PST           14.57           3147         -      Not Applicable
  12/30/2025 02 AM PST           14.55           3118         -      Not Applicable
  12/30/2025 03 AM PST           14.53           3088         -      Not Applicable
  12/30/2025 04 AM PST           14.51           3059         -      Not Applicable
  12/30/2025 05 AM PST           14.49           3030         -      Not Applicable
  12/30/2025 06 AM PST           14.47           3001         -      Not Applicable
  12/30/2025 07 AM PST           14.45           2972         -      Not Applicable
  12/30/2025 08 AM PST           14.44           2958         -      Not Applicable
  12/30/2025 09 AM PST           14.42           2929         -      Not Applicable
  12/30/2025 10 AM PST           14.40           2900         -      Not Applicable
  12/30/2025 11 AM PST           14.38           2871         -      Not Applicable
  12/30/2025 12 PM PST           14.37           2857         -      Not Applicable
  12/30/2025 01 PM PST           14.35           2828         -      Not Applicable
  12/30/2025 02 PM PST           14.34           2814         -      Not Applicable
  12/30/2025 03 PM PST           14.32           2785         -      Not Applicable
  12/30/2025 04 PM PST           14.31           2771         -      Not Applicable
  12/30/2025 05 PM PST           14.29           2743         -      Not Applicable
  12/30/2025 06 PM PST           14.28           2729         -      Not Applicable
  12/30/2025 07 PM PST           14.27           2715         -      Not Applicable
  12/30/2025 08 PM PST           14.25           2686         -      Not Applicable
  12/30/2025 09 PM PST           14.24           2672         -      Not Applicable
  12/30/2025 10 PM PST           14.22           2644         -      Not Applicable
  12/30/2025 11 PM PST           14.21           2630         -      Not Applicable
  12/31/2025 12 AM PST           14.19           2602         -      Not Applicable
  12/31/2025 01 AM PST           14.18           2588         -      Not Applicable
  12/31/2025 02 AM PST           14.16           2560         -      Not Applicable
  12/31/2025 03 AM PST           14.15           2547         -      Not Applicable
  12/31/2025 04 AM PST           14.14           2533         -      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.