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

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TRINITY RIVER - HOOPA (HOOC1)
Latitude: 41.05º NLongitude: 123.68º WElevation: 333 FeetForecast Type: Official Location
Location: Humboldt County in CaliforniaBulletin Group: North CoastRiver Group: Klamath
Issuance Time: Apr 12 2026 at 9:07 AM PDTNext Issuance: Apr 13 2026 at 9:00 AM PDT
Action/Monitor: 44.0 FeetMinor Flood: 48.0 FeetModerate Flood: 52.0 FeetMajor Flood: 56.0 Feet


# Tabular Observed and Forecast Hydrograph Information
#
# Location: Trinity River - Hoopa (HOOC1)
#
# File Generation Time:  04/12/2026 at 09:07 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/12/2026 at 08:00 AM PDT
# Maximum Observed Stage:                       15.26 Feet
# Maximum Observed Flow:                        4516 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/13/2026 at 12:00 PM PDT
# Maximum Forecast Stage:                       15.82 Feet
# Maximum Forecast Flow:                        5370 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/07/2026 09 AM PDT           13.56           2396                        Normal
  04/07/2026 10 AM PDT           13.57           2406         +              Normal
  04/07/2026 11 AM PDT           13.57           2406         0              Normal
  04/07/2026 12 PM PDT           13.56           2396         -              Normal
  04/07/2026 01 PM PDT           13.56           2396         0              Normal
  04/07/2026 02 PM PDT           13.56           2396         0              Normal
  04/07/2026 03 PM PDT           13.56           2396         0              Normal
  04/07/2026 04 PM PDT           13.54           2375         -              Normal
  04/07/2026 05 PM PDT           13.56           2396         +              Normal
  04/07/2026 06 PM PDT           13.56           2396         0              Normal
  04/07/2026 07 PM PDT           13.55           2386         -              Normal
  04/07/2026 08 PM PDT           13.53           2365         -              Normal
  04/07/2026 09 PM PDT           13.53           2365         0              Normal
  04/07/2026 10 PM PDT           13.54           2375         +              Normal
  04/07/2026 11 PM PDT           13.53           2365         -              Normal
  04/08/2026 12 AM PDT           13.53           2365         0              Normal
  04/08/2026 01 AM PDT           13.54           2375         +              Normal
  04/08/2026 02 AM PDT           13.57           2406         +              Normal
  04/08/2026 03 AM PDT           13.59           2427         +              Normal
  04/08/2026 04 AM PDT           13.65           2491         +              Normal
  04/08/2026 05 AM PDT           13.71           2555         +              Normal
  04/08/2026 06 AM PDT           13.78           2631         +              Normal
  04/08/2026 07 AM PDT           13.88           2742         +              Normal
  04/08/2026 08 AM PDT           13.98           2855         +              Normal
  04/08/2026 09 AM PDT           14.10           2993         +              Normal
  04/08/2026 10 AM PDT           14.20           3112         +              Normal
  04/08/2026 11 AM PDT           14.28           3208         +              Normal
  04/08/2026 12 PM PDT           14.30           3233         +              Normal
  04/08/2026 01 PM PDT           14.30           3233         0              Normal
  04/08/2026 02 PM PDT           14.28           3208         -              Normal
  04/08/2026 03 PM PDT           14.28           3208         0              Normal
  04/08/2026 04 PM PDT           14.29           3220         +              Normal
  04/08/2026 05 PM PDT           14.28           3208         -              Normal
  04/08/2026 06 PM PDT           14.28           3208         0              Normal
  04/08/2026 07 PM PDT           14.26           3184         -              Normal
  04/08/2026 08 PM PDT           14.24           3160         -              Normal
  04/08/2026 09 PM PDT           14.25           3172         +              Normal
  04/08/2026 10 PM PDT           14.23           3148         -              Normal
  04/08/2026 11 PM PDT           14.24           3160         +              Normal
  04/09/2026 12 AM PDT           14.22           3136         -              Normal
  04/09/2026 01 AM PDT           14.20           3112         -              Normal
  04/09/2026 02 AM PDT           14.21           3124         +              Normal
  04/09/2026 03 AM PDT           14.22           3136         +              Normal
  04/09/2026 04 AM PDT           14.22           3136         0              Normal
  04/09/2026 05 AM PDT           14.20           3112         -              Normal
  04/09/2026 06 AM PDT           14.20           3112         0              Normal
  04/09/2026 07 AM PDT           14.18           3088         -              Normal
  04/09/2026 08 AM PDT           14.19           3100         +              Normal
  04/09/2026 09 AM PDT           14.18           3088         -              Normal
  04/09/2026 10 AM PDT           14.19           3100         +              Normal
  04/09/2026 11 AM PDT           14.15           3052         -              Normal
  04/09/2026 12 PM PDT           14.17           3076         +              Normal
  04/09/2026 01 PM PDT           14.16           3064         -              Normal
  04/09/2026 02 PM PDT           14.18           3088         +              Normal
  04/09/2026 03 PM PDT           14.21           3124         +              Normal
  04/09/2026 04 PM PDT           14.24           3160         +              Normal
  04/09/2026 05 PM PDT           14.27           3196         +              Normal
  04/09/2026 06 PM PDT           14.28           3208         +              Normal
  04/09/2026 07 PM PDT           14.27           3196         -              Normal
  04/09/2026 08 PM PDT           14.30           3233         +              Normal
  04/09/2026 09 PM PDT           14.33           3269         +              Normal
  04/09/2026 10 PM PDT           14.35           3294         +              Normal
  04/09/2026 11 PM PDT           14.41           3368         +              Normal
  04/10/2026 12 AM PDT           14.42           3381         +              Normal
  04/10/2026 01 AM PDT           14.44           3406         +              Normal
  04/10/2026 02 AM PDT           14.45           3418         +              Normal
  04/10/2026 03 AM PDT           14.42           3381         -              Normal
  04/10/2026 04 AM PDT           14.40           3356         -              Normal
  04/10/2026 05 AM PDT           14.39           3343         -              Normal
  04/10/2026 06 AM PDT           14.36           3306         -              Normal
  04/10/2026 07 AM PDT           14.40           3356         +              Normal
  04/10/2026 08 AM PDT           14.43           3393         +              Normal
  04/10/2026 09 AM PDT           14.42           3381         -              Normal
  04/10/2026 10 AM PDT           14.45           3418         +              Normal
  04/10/2026 11 AM PDT           14.48           3456         +              Normal
  04/10/2026 12 PM PDT           14.52           3507         +              Normal
  04/10/2026 01 PM PDT           14.56           3558         +              Normal
  04/10/2026 02 PM PDT           14.62           3635         +              Normal
  04/10/2026 03 PM PDT           14.64           3661         +              Normal
  04/10/2026 04 PM PDT           14.68           3714         +              Normal
  04/10/2026 05 PM PDT           14.69           3727         +              Normal
  04/10/2026 06 PM PDT           14.73           3780         +              Normal
  04/10/2026 07 PM PDT           14.73           3780         0              Normal
  04/10/2026 08 PM PDT           14.74           3793         +              Normal
  04/10/2026 09 PM PDT           14.77           3833         +              Normal
  04/10/2026 10 PM PDT           14.79           3860         +              Normal
  04/10/2026 11 PM PDT           14.78           3846         -              Normal
  04/11/2026 12 AM PDT           14.80           3873         +              Normal
  04/11/2026 01 AM PDT           14.79           3860         -              Normal
  04/11/2026 02 AM PDT           14.79           3860         0              Normal
  04/11/2026 03 AM PDT           14.78           3846         -              Normal
  04/11/2026 04 AM PDT           14.76           3820         -              Normal
  04/11/2026 05 AM PDT           14.76           3820         0              Normal
  04/11/2026 06 AM PDT           14.77           3833         +              Normal
  04/11/2026 07 AM PDT           14.76           3820         -              Normal
  04/11/2026 08 AM PDT           14.77           3833         +              Normal
  04/11/2026 09 AM PDT           14.79           3860         +              Normal
  04/11/2026 10 AM PDT           14.80           3873         +              Normal
  04/11/2026 11 AM PDT           14.81           3886         +              Normal
  04/11/2026 12 PM PDT           14.83           3913         +              Normal
  04/11/2026 01 PM PDT           14.82           3900         -              Normal
  04/11/2026 02 PM PDT           14.86           3954         +              Normal
  04/11/2026 03 PM PDT           14.87           3968         +              Normal
  04/11/2026 04 PM PDT           14.86           3954         -              Normal
  04/11/2026 05 PM PDT           14.86           3954         0              Normal
  04/11/2026 06 PM PDT           14.87           3968         +              Normal
  04/11/2026 07 PM PDT           14.88           3981         +              Normal
  04/11/2026 08 PM PDT           14.86           3954         -              Normal
  04/11/2026 09 PM PDT           14.89           3995         +              Normal
  04/11/2026 10 PM PDT           14.89           3995         0              Normal
  04/11/2026 11 PM PDT           14.91           4022         +              Normal
  04/12/2026 12 AM PDT           14.90           4008         -              Normal
  04/12/2026 01 AM PDT           14.94           4063         +              Normal
  04/12/2026 02 AM PDT           14.98           4118         +              Normal
  04/12/2026 03 AM PDT           15.02           4174         +              Normal
  04/12/2026 04 AM PDT           15.06           4230         +              Normal
  04/12/2026 05 AM PDT           15.10           4287         +              Normal
  04/12/2026 06 AM PDT           15.13           4329         +              Normal
  04/12/2026 07 AM PDT           15.21           4444         +              Normal
  04/12/2026 08 AM PDT           15.26           4516         +              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/12/2026 09 AM PDT           15.30           4575                        Normal
  04/12/2026 10 AM PDT           15.33           4619         +              Normal
  04/12/2026 11 AM PDT           15.37           4678         +              Normal
  04/12/2026 12 PM PDT           15.41           4737         +              Normal
  04/12/2026 01 PM PDT           15.45           4797         +              Normal
  04/12/2026 02 PM PDT           15.49           4857         +              Normal
  04/12/2026 03 PM PDT           15.52           4903         +              Normal
  04/12/2026 04 PM PDT           15.55           4949         +              Normal
  04/12/2026 05 PM PDT           15.56           4964         +              Normal
  04/12/2026 06 PM PDT           15.56           4964         0              Normal
  04/12/2026 07 PM PDT           15.55           4949         -              Normal
  04/12/2026 08 PM PDT           15.54           4933         -              Normal
  04/12/2026 09 PM PDT           15.52           4903         -              Normal
  04/12/2026 10 PM PDT           15.49           4857         -              Normal
  04/12/2026 11 PM PDT           15.47           4827         -              Normal
  04/13/2026 12 AM PDT           15.45           4797         -              Normal
  04/13/2026 01 AM PDT           15.43           4767         -              Normal
  04/13/2026 02 AM PDT           15.43           4767         0              Normal
  04/13/2026 03 AM PDT           15.44           4782         +              Normal
  04/13/2026 04 AM PDT           15.46           4812         +              Normal
  04/13/2026 05 AM PDT           15.50           4872         +              Normal
  04/13/2026 06 AM PDT           15.54           4933         +              Normal
  04/13/2026 07 AM PDT           15.60           5025         +              Normal
  04/13/2026 08 AM PDT           15.66           5118         +              Normal
  04/13/2026 09 AM PDT           15.72           5212         +              Normal
  04/13/2026 10 AM PDT           15.77           5290         +              Normal
  04/13/2026 11 AM PDT           15.81           5354         +              Normal
  04/13/2026 12 PM PDT           15.82           5370         +              Normal
  04/13/2026 01 PM PDT           15.82           5370         0              Normal
  04/13/2026 02 PM PDT           15.79           5322         -              Normal
  04/13/2026 03 PM PDT           15.75           5259         -              Normal
  04/13/2026 04 PM PDT           15.71           5196         -              Normal
  04/13/2026 05 PM PDT           15.65           5102         -              Normal
  04/13/2026 06 PM PDT           15.60           5025         -              Normal
  04/13/2026 07 PM PDT           15.54           4933         -              Normal
  04/13/2026 08 PM PDT           15.49           4857         -              Normal
  04/13/2026 09 PM PDT           15.43           4767         -              Normal
  04/13/2026 10 PM PDT           15.38           4693         -              Normal
  04/13/2026 11 PM PDT           15.33           4619         -              Normal
  04/14/2026 12 AM PDT           15.29           4560         -              Normal
  04/14/2026 01 AM PDT           15.24           4487         -              Normal
  04/14/2026 02 AM PDT           15.20           4429         -              Normal
  04/14/2026 03 AM PDT           15.17           4386         -              Normal
  04/14/2026 04 AM PDT           15.14           4343         -              Normal
  04/14/2026 05 AM PDT           15.11           4301         -              Normal
  04/14/2026 06 AM PDT           15.08           4258         -              Normal
  04/14/2026 07 AM PDT           15.06           4230         -              Normal
  04/14/2026 08 AM PDT           15.04           4202         -              Normal
  04/14/2026 09 AM PDT           15.03           4188         -              Normal
  04/14/2026 10 AM PDT           15.02           4174         -              Normal
  04/14/2026 11 AM PDT           15.01           4160         -              Normal
  04/14/2026 12 PM PDT           15.01           4160         0              Normal
  04/14/2026 01 PM PDT           15.01           4160         0              Normal
  04/14/2026 02 PM PDT           15.00           4146         -              Normal
  04/14/2026 03 PM PDT           15.00           4146         0              Normal
  04/14/2026 04 PM PDT           15.00           4146         0              Normal
  04/14/2026 05 PM PDT           14.99           4132         -              Normal
  04/14/2026 06 PM PDT           14.99           4132         0              Normal
  04/14/2026 07 PM PDT           14.99           4132         0              Normal
  04/14/2026 08 PM PDT           14.98           4118         -              Normal
  04/14/2026 09 PM PDT           14.98           4118         0              Normal
  04/14/2026 10 PM PDT           14.97           4105         -              Normal
  04/14/2026 11 PM PDT           14.97           4105         0              Normal
  04/15/2026 12 AM PDT           14.96           4091         -              Normal
  04/15/2026 01 AM PDT           14.96           4091         0              Normal
  04/15/2026 02 AM PDT           14.96           4091         0              Normal
  04/15/2026 03 AM PDT           14.95           4077         -              Normal
  04/15/2026 04 AM PDT           14.95           4077         0              Normal
  04/15/2026 05 AM PDT           14.95           4077         0              Normal
  04/15/2026 06 AM PDT           14.96           4091         +              Normal
  04/15/2026 07 AM PDT           14.96           4091         0              Normal
  04/15/2026 08 AM PDT           14.96           4091         0              Normal
  04/15/2026 09 AM PDT           14.97           4105         +              Normal
  04/15/2026 10 AM PDT           14.98           4118         +              Normal
  04/15/2026 11 AM PDT           14.99           4132         +              Normal
  04/15/2026 12 PM PDT           15.00           4146         +              Normal
  04/15/2026 01 PM PDT           15.00           4146         0              Normal
  04/15/2026 02 PM PDT           15.01           4160         +              Normal
  04/15/2026 03 PM PDT           15.02           4174         +              Normal
  04/15/2026 04 PM PDT           15.02           4174         0              Normal
  04/15/2026 05 PM PDT           15.03           4188         +              Normal
  04/15/2026 06 PM PDT           15.03           4188         0              Normal
  04/15/2026 07 PM PDT           15.04           4202         +              Normal
  04/15/2026 08 PM PDT           15.04           4202         0              Normal
  04/15/2026 09 PM PDT           15.04           4202         0              Normal
  04/15/2026 10 PM PDT           15.05           4216         +              Normal
  04/15/2026 11 PM PDT           15.05           4216         0              Normal
  04/16/2026 12 AM PDT           15.06           4230         +              Normal
  04/16/2026 01 AM PDT           15.06           4230         0              Normal
  04/16/2026 02 AM PDT           15.07           4244         +              Normal
  04/16/2026 03 AM PDT           15.08           4258         +              Normal
  04/16/2026 04 AM PDT           15.10           4287         +              Normal
  04/16/2026 05 AM PDT           15.11           4301         +              Normal
  04/16/2026 06 AM PDT           15.12           4315         +              Normal
  04/16/2026 07 AM PDT           15.14           4343         +              Normal
  04/16/2026 08 AM PDT           15.15           4358         +              Normal
  04/16/2026 09 AM PDT           15.17           4386         +              Normal
  04/16/2026 10 AM PDT           15.18           4401         +              Normal
  04/16/2026 11 AM PDT           15.20           4429         +              Normal
  04/16/2026 12 PM PDT           15.21           4444         +              Normal
  04/16/2026 01 PM PDT           15.22           4458         +              Normal
  04/16/2026 02 PM PDT           15.22           4458         0              Normal
  04/16/2026 03 PM PDT           15.23           4473         +              Normal
  04/16/2026 04 PM PDT           15.23           4473         0              Normal
  04/16/2026 05 PM PDT           15.23           4473         0              Normal
  04/16/2026 06 PM PDT           15.22           4458         -              Normal
  04/16/2026 07 PM PDT           15.22           4458         0              Normal
  04/16/2026 08 PM PDT           15.21           4444         -              Normal
  04/16/2026 09 PM PDT           15.20           4429         -              Normal
  04/16/2026 10 PM PDT           15.18           4401         -              Normal
  04/16/2026 11 PM PDT           15.17           4386         -              Normal
  04/17/2026 12 AM PDT           15.15           4358         -              Normal
  04/17/2026 01 AM PDT           15.14           4343         -              Normal
  04/17/2026 02 AM PDT           15.12           4315         -              Normal
  04/17/2026 03 AM PDT           15.11           4301         -              Normal
  04/17/2026 04 AM PDT           15.10           4287         -              Normal
  04/17/2026 05 AM PDT           15.09           4272         -              Normal
#
# 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.