MATTOLE RIVER - ETTERSBURG (ETTC1)
Latitude: 40.14º NLongitude: 123.99º WElevation: 579 FeetForecast Type: Unofficial Location
Location: Humboldt County in CaliforniaBulletin Group: North CoastRiver Group: North Coast
Issuance Time: Feb 20 2026 at 1:16 PM PSTNext Issuance: Feb 21 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 - Ettersburg (ETTC1)
#
# File Generation Time:  02/20/2026 at 01:18 PM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  02/16/2026 at 12:00 AM PST
# Maximum Observed Stage:                       12.63 Feet
# Maximum Observed Flow:                        1078 cfs
#
# Earliest Date & Time of Maximum Forecast:     02/24/2026 at 01:00 PM PST
# Maximum Forecast Stage:                       15.20 Feet
# Maximum Forecast Flow:                        2680 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  02/15/2026 01 PM PST           10.82            367                Not Applicable
  02/15/2026 02 PM PST           11.04            421         +      Not Applicable
  02/15/2026 03 PM PST           11.26            491         +      Not Applicable
  02/15/2026 04 PM PST           11.46            565         +      Not Applicable
  02/15/2026 05 PM PST           11.69            654         +      Not Applicable
  02/15/2026 06 PM PST           11.89            736         +      Not Applicable
  02/15/2026 07 PM PST           12.11            832         +      Not Applicable
  02/15/2026 08 PM PST           12.30            919         +      Not Applicable
  02/15/2026 09 PM PST           12.46            994         +      Not Applicable
  02/15/2026 10 PM PST           12.56           1043         +      Not Applicable
  02/15/2026 11 PM PST           12.60           1063         +      Not Applicable
  02/16/2026 12 AM PST           12.63           1078         +      Not Applicable
  02/16/2026 01 AM PST           12.62           1073         -      Not Applicable
  02/16/2026 02 AM PST           12.59           1058         -      Not Applicable
  02/16/2026 03 AM PST           12.55           1038         -      Not Applicable
  02/16/2026 04 AM PST           12.50           1014         -      Not Applicable
  02/16/2026 05 AM PST           12.44            985         -      Not Applicable
  02/16/2026 06 AM PST           12.39            961         -      Not Applicable
  02/16/2026 07 AM PST           12.31            923         -      Not Applicable
  02/16/2026 08 AM PST           12.25            895         -      Not Applicable
  02/16/2026 09 AM PST           12.21            877         -      Not Applicable
  02/16/2026 10 AM PST           12.16            854         -      Not Applicable
  02/16/2026 11 AM PST           12.10            828         -      Not Applicable
  02/16/2026 12 PM PST           12.05            805         -      Not Applicable
  02/16/2026 01 PM PST           12.00            784         -      Not Applicable
  02/16/2026 02 PM PST           11.96            766         -      Not Applicable
  02/16/2026 03 PM PST           11.91            745         -      Not Applicable
  02/16/2026 04 PM PST           11.88            732         -      Not Applicable
  02/16/2026 05 PM PST           11.83            711         -      Not Applicable
  02/16/2026 06 PM PST           11.79            695         -      Not Applicable
  02/16/2026 07 PM PST           11.75            678         -      Not Applicable
  02/16/2026 08 PM PST           11.71            662         -      Not Applicable
  02/16/2026 09 PM PST           11.66            642         -      Not Applicable
  02/16/2026 10 PM PST           11.63            630         -      Not Applicable
  02/16/2026 11 PM PST           11.60            618         -      Not Applicable
  02/17/2026 12 AM PST           11.58            611         -      Not Applicable
  02/17/2026 01 AM PST           11.55            599         -      Not Applicable
  02/17/2026 02 AM PST           11.52            587         -      Not Applicable
  02/17/2026 03 AM PST           11.53            591         +      Not Applicable
  02/17/2026 04 AM PST           11.54            595         +      Not Applicable
  02/17/2026 05 AM PST           11.62            626         +      Not Applicable
  02/17/2026 06 AM PST           11.62            626         0      Not Applicable
  02/17/2026 07 AM PST           11.62            626         0      Not Applicable
  02/17/2026 08 AM PST           11.62            626         0      Not Applicable
  02/17/2026 09 AM PST           11.63            630         +      Not Applicable
  02/17/2026 10 AM PST           11.64            634         +      Not Applicable
  02/17/2026 11 AM PST           11.65            638         +      Not Applicable
  02/17/2026 12 PM PST           11.66            642         +      Not Applicable
  02/17/2026 01 PM PST           11.65            638         -      Not Applicable
  02/17/2026 02 PM PST           11.64            634         -      Not Applicable
  02/17/2026 03 PM PST           11.61            622         -      Not Applicable
  02/17/2026 04 PM PST           11.60            618         -      Not Applicable
  02/17/2026 05 PM PST           11.59            614         -      Not Applicable
  02/17/2026 06 PM PST           11.58            611         -      Not Applicable
  02/17/2026 07 PM PST           11.55            599         -      Not Applicable
  02/17/2026 08 PM PST           11.55            599         0      Not Applicable
  02/17/2026 09 PM PST           11.52            587         -      Not Applicable
  02/17/2026 10 PM PST           11.52            587         0      Not Applicable
  02/17/2026 11 PM PST           11.50            580         -      Not Applicable
  02/18/2026 12 AM PST           11.50            580         0      Not Applicable
  02/18/2026 01 AM PST           11.47            568         -      Not Applicable
  02/18/2026 02 AM PST           11.45            561         -      Not Applicable
  02/18/2026 03 AM PST           11.43            553         -      Not Applicable
  02/18/2026 04 AM PST           11.43            553         0      Not Applicable
  02/18/2026 05 AM PST           11.41            546         -      Not Applicable
  02/18/2026 06 AM PST           11.40            542         -      Not Applicable
  02/18/2026 07 AM PST           11.41            546         +      Not Applicable
  02/18/2026 08 AM PST           11.40            542         -      Not Applicable
  02/18/2026 09 AM PST           11.39            538         -      Not Applicable
  02/18/2026 10 AM PST           11.38            535         -      Not Applicable
  02/18/2026 11 AM PST           11.40            542         +      Not Applicable
  02/18/2026 12 PM PST           11.38            535         -      Not Applicable
  02/18/2026 01 PM PST           11.40            542         +      Not Applicable
  02/18/2026 02 PM PST           11.40            542         0      Not Applicable
  02/18/2026 03 PM PST           11.41            546         +      Not Applicable
  02/18/2026 04 PM PST           11.42            550         +      Not Applicable
  02/18/2026 05 PM PST           11.42            550         0      Not Applicable
  02/18/2026 06 PM PST           11.41            546         -      Not Applicable
  02/18/2026 07 PM PST           11.42            550         +      Not Applicable
  02/18/2026 08 PM PST           11.44            557         +      Not Applicable
  02/18/2026 09 PM PST           11.46            565         +      Not Applicable
  02/18/2026 10 PM PST           11.47            568         +      Not Applicable
  02/18/2026 11 PM PST           11.46            565         -      Not Applicable
  02/19/2026 12 AM PST           11.45            561         -      Not Applicable
  02/19/2026 01 AM PST           11.46            565         +      Not Applicable
  02/19/2026 02 AM PST           11.46            565         0      Not Applicable
  02/19/2026 03 AM PST           11.48            572         +      Not Applicable
  02/19/2026 04 AM PST           11.54            595         +      Not Applicable
  02/19/2026 05 AM PST           11.59            614         +      Not Applicable
  02/19/2026 06 AM PST           11.63            630         +      Not Applicable
  02/19/2026 07 AM PST           11.65            638         +      Not Applicable
  02/19/2026 08 AM PST           11.68            650         +      Not Applicable
  02/19/2026 09 AM PST           11.70            658         +      Not Applicable
  02/19/2026 10 AM PST           11.72            666         +      Not Applicable
  02/19/2026 11 AM PST           11.73            670         +      Not Applicable
  02/19/2026 12 PM PST           11.74            674         +      Not Applicable
  02/19/2026 01 PM PST           11.76            682         +      Not Applicable
  02/19/2026 02 PM PST           11.76            682         0      Not Applicable
  02/19/2026 03 PM PST           11.77            687         +      Not Applicable
  02/19/2026 04 PM PST           11.78            691         +      Not Applicable
  02/19/2026 05 PM PST           11.80            699         +      Not Applicable
  02/19/2026 06 PM PST           11.79            695         -      Not Applicable
  02/19/2026 07 PM PST           11.79            695         0      Not Applicable
  02/19/2026 08 PM PST           11.79            695         0      Not Applicable
  02/19/2026 09 PM PST           11.80            699         +      Not Applicable
  02/19/2026 10 PM PST           11.79            695         -      Not Applicable
  02/19/2026 11 PM PST           11.78            691         -      Not Applicable
  02/20/2026 12 AM PST           11.78            691         0      Not Applicable
  02/20/2026 01 AM PST           11.77            687         -      Not Applicable
  02/20/2026 02 AM PST           11.76            682         -      Not Applicable
  02/20/2026 03 AM PST           11.75            678         -      Not Applicable
  02/20/2026 04 AM PST           11.73            670         -      Not Applicable
  02/20/2026 05 AM PST           11.73            670         0      Not Applicable
  02/20/2026 06 AM PST           11.71            662         -      Not Applicable
  02/20/2026 07 AM PST           11.72            666         +      Not Applicable
  02/20/2026 08 AM PST           11.69            654         -      Not Applicable
  02/20/2026 09 AM PST           11.69            654         0      Not Applicable
  02/20/2026 10 AM PST           11.67            646         -      Not Applicable
  02/20/2026 11 AM PST           11.67            646         0      Not Applicable
  02/20/2026 12 PM PST           11.65            638         -      Not Applicable
  02/20/2026 01 PM PST           11.63            630         -      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  02/20/2026 02 PM PST           11.60            618                Not Applicable
  02/20/2026 03 PM PST           11.59            614         -      Not Applicable
  02/20/2026 04 PM PST           11.57            607         -      Not Applicable
  02/20/2026 05 PM PST           11.56            603         -      Not Applicable
  02/20/2026 06 PM PST           11.54            595         -      Not Applicable
  02/20/2026 07 PM PST           11.53            591         -      Not Applicable
  02/20/2026 08 PM PST           11.52            587         -      Not Applicable
  02/20/2026 09 PM PST           11.50            580         -      Not Applicable
  02/20/2026 10 PM PST           11.49            576         -      Not Applicable
  02/20/2026 11 PM PST           11.47            568         -      Not Applicable
  02/21/2026 12 AM PST           11.46            565         -      Not Applicable
  02/21/2026 01 AM PST           11.45            561         -      Not Applicable
  02/21/2026 02 AM PST           11.44            557         -      Not Applicable
  02/21/2026 03 AM PST           11.42            550         -      Not Applicable
  02/21/2026 04 AM PST           11.41            546         -      Not Applicable
  02/21/2026 05 AM PST           11.41            546         0      Not Applicable
  02/21/2026 06 AM PST           11.41            546         0      Not Applicable
  02/21/2026 07 AM PST           11.42            550         +      Not Applicable
  02/21/2026 08 AM PST           11.43            553         +      Not Applicable
  02/21/2026 09 AM PST           11.44            557         +      Not Applicable
  02/21/2026 10 AM PST           11.45            561         +      Not Applicable
  02/21/2026 11 AM PST           11.45            561         0      Not Applicable
  02/21/2026 12 PM PST           11.46            565         +      Not Applicable
  02/21/2026 01 PM PST           11.46            565         0      Not Applicable
  02/21/2026 02 PM PST           11.46            565         0      Not Applicable
  02/21/2026 03 PM PST           11.45            561         -      Not Applicable
  02/21/2026 04 PM PST           11.45            561         0      Not Applicable
  02/21/2026 05 PM PST           11.44            557         -      Not Applicable
  02/21/2026 06 PM PST           11.44            557         0      Not Applicable
  02/21/2026 07 PM PST           11.43            553         -      Not Applicable
  02/21/2026 08 PM PST           11.43            553         0      Not Applicable
  02/21/2026 09 PM PST           11.43            553         0      Not Applicable
  02/21/2026 10 PM PST           11.43            553         0      Not Applicable
  02/21/2026 11 PM PST           11.45            561         +      Not Applicable
  02/22/2026 12 AM PST           11.46            565         +      Not Applicable
  02/22/2026 01 AM PST           11.50            580         +      Not Applicable
  02/22/2026 02 AM PST           11.54            595         +      Not Applicable
  02/22/2026 03 AM PST           11.60            618         +      Not Applicable
  02/22/2026 04 AM PST           11.67            646         +      Not Applicable
  02/22/2026 05 AM PST           11.77            687         +      Not Applicable
  02/22/2026 06 AM PST           11.87            728         +      Not Applicable
  02/22/2026 07 AM PST           11.98            775         +      Not Applicable
  02/22/2026 08 AM PST           12.11            832         +      Not Applicable
  02/22/2026 09 AM PST           12.25            895         +      Not Applicable
  02/22/2026 10 AM PST           12.41            970         +      Not Applicable
  02/22/2026 11 AM PST           12.59           1058         +      Not Applicable
  02/22/2026 12 PM PST           12.97           1253         +      Not Applicable
  02/22/2026 01 PM PST           13.19           1373         +      Not Applicable
  02/22/2026 02 PM PST           13.31           1440         +      Not Applicable
  02/22/2026 03 PM PST           13.38           1480         +      Not Applicable
  02/22/2026 04 PM PST           13.40           1492         +      Not Applicable
  02/22/2026 05 PM PST           13.40           1492         0      Not Applicable
  02/22/2026 06 PM PST           13.40           1492         0      Not Applicable
  02/22/2026 07 PM PST           13.38           1480         -      Not Applicable
  02/22/2026 08 PM PST           13.35           1463         -      Not Applicable
  02/22/2026 09 PM PST           13.29           1429         -      Not Applicable
  02/22/2026 10 PM PST           13.20           1379         -      Not Applicable
  02/22/2026 11 PM PST           13.11           1329         -      Not Applicable
  02/23/2026 12 AM PST           13.02           1280         -      Not Applicable
  02/23/2026 01 AM PST           12.94           1237         -      Not Applicable
  02/23/2026 02 AM PST           12.86           1195         -      Not Applicable
  02/23/2026 03 AM PST           12.79           1159         -      Not Applicable
  02/23/2026 04 AM PST           12.73           1128         -      Not Applicable
  02/23/2026 05 AM PST           12.67           1098         -      Not Applicable
  02/23/2026 06 AM PST           12.61           1068         -      Not Applicable
  02/23/2026 07 AM PST           12.56           1043         -      Not Applicable
  02/23/2026 08 AM PST           12.52           1024         -      Not Applicable
  02/23/2026 09 AM PST           12.50           1014         -      Not Applicable
  02/23/2026 10 AM PST           12.48           1004         -      Not Applicable
  02/23/2026 11 AM PST           12.46            994         -      Not Applicable
  02/23/2026 12 PM PST           12.44            985         -      Not Applicable
  02/23/2026 01 PM PST           12.42            975         -      Not Applicable
  02/23/2026 02 PM PST           12.41            970         -      Not Applicable
  02/23/2026 03 PM PST           12.41            970         0      Not Applicable
  02/23/2026 04 PM PST           12.44            985         +      Not Applicable
  02/23/2026 05 PM PST           12.47            999         +      Not Applicable
  02/23/2026 06 PM PST           12.54           1033         +      Not Applicable
  02/23/2026 07 PM PST           12.65           1088         +      Not Applicable
  02/23/2026 08 PM PST           12.75           1138         +      Not Applicable
  02/23/2026 09 PM PST           12.91           1222         +      Not Applicable
  02/23/2026 10 PM PST           13.11           1329         +      Not Applicable
  02/23/2026 11 PM PST           13.31           1440         +      Not Applicable
  02/24/2026 12 AM PST           13.68           1656         +      Not Applicable
  02/24/2026 01 AM PST           13.85           1760         +      Not Applicable
  02/24/2026 02 AM PST           14.02           1867         +      Not Applicable
  02/24/2026 03 AM PST           14.19           1976         +      Not Applicable
  02/24/2026 04 AM PST           14.35           2081         +      Not Applicable
  02/24/2026 05 AM PST           14.50           2182         +      Not Applicable
  02/24/2026 06 AM PST           14.63           2271         +      Not Applicable
  02/24/2026 07 AM PST           14.75           2355         +      Not Applicable
  02/24/2026 08 AM PST           14.85           2425         +      Not Applicable
  02/24/2026 09 AM PST           14.94           2490         +      Not Applicable
  02/24/2026 10 AM PST           15.02           2547         +      Not Applicable
  02/24/2026 11 AM PST           15.09           2598         +      Not Applicable
  02/24/2026 12 PM PST           15.15           2643         +      Not Applicable
  02/24/2026 01 PM PST           15.20           2680         +      Not Applicable
  02/24/2026 02 PM PST           15.19           2672         -      Not Applicable
  02/24/2026 03 PM PST           15.12           2620         -      Not Applicable
  02/24/2026 04 PM PST           15.04           2562         -      Not Applicable
  02/24/2026 05 PM PST           14.96           2504         -      Not Applicable
  02/24/2026 06 PM PST           14.88           2447         -      Not Applicable
  02/24/2026 07 PM PST           14.80           2390         -      Not Applicable
  02/24/2026 08 PM PST           14.69           2313         -      Not Applicable
  02/24/2026 09 PM PST           14.54           2209         -      Not Applicable
  02/24/2026 10 PM PST           14.39           2108         -      Not Applicable
  02/24/2026 11 PM PST           14.25           2015         -      Not Applicable
  02/25/2026 12 AM PST           14.11           1924         -      Not Applicable
  02/25/2026 01 AM PST           13.98           1841         -      Not Applicable
  02/25/2026 02 AM PST           13.86           1766         -      Not Applicable
  02/25/2026 03 AM PST           13.73           1687         -      Not Applicable
  02/25/2026 04 AM PST           13.62           1621         -      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.