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TRINITY RIVER - HOOPA (HOOC1)
| Latitude: 41.05º N | Longitude: 123.68º W | Elevation: 333 Feet | | Forecast Type: Official Location |
| Location: Humboldt County in California | Bulletin Group: North Coast | River Group: Klamath |
| Issuance Time: | Apr 18 2026 at 8:43 AM PDT | Next Issuance: | Apr 19 2026 at 9:00 AM PDT
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| Action/Monitor: 44.0 Feet | Minor Flood: 48.0 Feet | Moderate Flood: 52.0 Feet | Major Flood: 56.0 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Trinity River - Hoopa (HOOC1)
#
# File Generation Time: 04/18/2026 at 08:43 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/13/2026 at 01:00 PM PDT
# Maximum Observed Stage: 15.93 Feet
# Maximum Observed Flow: 5547 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/22/2026 at 03:00 PM PDT
# Maximum Forecast Stage: 17.20 Feet
# Maximum Forecast Flow: 7761 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/13/2026 08 AM PDT 15.87 5450 Normal
04/13/2026 09 AM PDT 15.89 5482 + Normal
04/13/2026 10 AM PDT 15.91 5514 + Normal
04/13/2026 11 AM PDT 15.91 5514 0 Normal
04/13/2026 12 PM PDT 15.91 5514 0 Normal
04/13/2026 01 PM PDT 15.93 5547 + Normal
04/13/2026 02 PM PDT 15.91 5514 - Normal
04/13/2026 03 PM PDT 15.89 5482 - Normal
04/13/2026 04 PM PDT 15.86 5434 - Normal
04/13/2026 05 PM PDT 15.85 5418 - Normal
04/13/2026 06 PM PDT 15.84 5402 - Normal
04/13/2026 07 PM PDT 15.81 5354 - Normal
04/13/2026 08 PM PDT 15.76 5275 - Normal
04/13/2026 09 PM PDT 15.74 5243 - Normal
04/13/2026 10 PM PDT 15.73 5227 - Normal
04/13/2026 11 PM PDT 15.70 5180 - Normal
04/14/2026 12 AM PDT 15.68 5149 - Normal
04/14/2026 01 AM PDT 15.67 5134 - Normal
04/14/2026 02 AM PDT 15.64 5087 - Normal
04/14/2026 03 AM PDT 15.62 5056 - Normal
04/14/2026 04 AM PDT 15.60 5025 - Normal
04/14/2026 05 AM PDT 15.58 4994 - Normal
04/14/2026 06 AM PDT 15.58 4994 0 Normal
04/14/2026 07 AM PDT 15.55 4949 - Normal
04/14/2026 08 AM PDT 15.53 4918 - Normal
04/14/2026 09 AM PDT 15.51 4888 - Normal
04/14/2026 10 AM PDT 15.51 4888 0 Normal
04/14/2026 11 AM PDT 15.49 4857 - Normal
04/14/2026 12 PM PDT 15.51 4888 + Normal
04/14/2026 01 PM PDT 15.48 4842 - Normal
04/14/2026 02 PM PDT 15.47 4827 - Normal
04/14/2026 03 PM PDT 15.49 4857 + Normal
04/14/2026 04 PM PDT 15.47 4827 - Normal
04/14/2026 05 PM PDT 15.45 4797 - Normal
04/14/2026 06 PM PDT 15.45 4797 0 Normal
04/14/2026 07 PM PDT 15.44 4782 - Normal
04/14/2026 08 PM PDT 15.45 4797 + Normal
04/14/2026 09 PM PDT 15.43 4767 - Normal
04/14/2026 10 PM PDT 15.42 4752 - Normal
04/14/2026 11 PM PDT 15.44 4782 + Normal
04/15/2026 12 AM PDT 15.44 4782 0 Normal
04/15/2026 01 AM PDT 15.42 4752 - Normal
04/15/2026 02 AM PDT 15.42 4752 0 Normal
04/15/2026 03 AM PDT 15.42 4752 0 Normal
04/15/2026 04 AM PDT 15.43 4767 + Normal
04/15/2026 05 AM PDT 15.41 4737 - Normal
04/15/2026 06 AM PDT 15.41 4737 0 Normal
04/15/2026 07 AM PDT 15.41 4737 0 Normal
04/15/2026 08 AM PDT 15.41 4737 0 Normal
04/15/2026 09 AM PDT 15.43 4767 + Normal
04/15/2026 10 AM PDT 15.42 4752 - Normal
04/15/2026 11 AM PDT 15.42 4752 0 Normal
04/15/2026 12 PM PDT 15.44 4782 + Normal
04/15/2026 01 PM PDT 15.44 4782 0 Normal
04/15/2026 02 PM PDT 15.44 4782 0 Normal
04/15/2026 03 PM PDT 15.42 4752 - Normal
04/15/2026 04 PM PDT 15.42 4752 0 Normal
04/15/2026 05 PM PDT 15.41 4737 - Normal
04/15/2026 06 PM PDT 15.39 4707 - Normal
04/15/2026 07 PM PDT 15.39 4707 0 Normal
04/15/2026 08 PM PDT 15.38 4693 - Normal
04/15/2026 09 PM PDT 15.43 4767 + Normal
04/15/2026 10 PM PDT 15.49 4857 + Normal
04/15/2026 11 PM PDT 15.57 4979 + Normal
04/16/2026 12 AM PDT 15.64 5087 + Normal
04/16/2026 01 AM PDT 15.72 5212 + Normal
04/16/2026 02 AM PDT 15.75 5259 + Normal
04/16/2026 03 AM PDT 15.79 5322 + Normal
04/16/2026 04 AM PDT 15.79 5322 0 Normal
04/16/2026 05 AM PDT 15.77 5290 - Normal
04/16/2026 06 AM PDT 15.79 5322 + Normal
04/16/2026 07 AM PDT 15.76 5275 - Normal
04/16/2026 08 AM PDT 15.77 5290 + Normal
04/16/2026 09 AM PDT 15.75 5259 - Normal
04/16/2026 10 AM PDT 15.76 5275 + Normal
04/16/2026 11 AM PDT 15.72 5212 - Normal
04/16/2026 12 PM PDT 15.71 5196 - Normal
04/16/2026 01 PM PDT 15.68 5149 - Normal
04/16/2026 02 PM PDT 15.66 5118 - Normal
04/16/2026 03 PM PDT 15.64 5087 - Normal
04/16/2026 04 PM PDT 15.62 5056 - Normal
04/16/2026 05 PM PDT 15.58 4994 - Normal
04/16/2026 06 PM PDT 15.55 4949 - Normal
04/16/2026 07 PM PDT 15.54 4933 - Normal
04/16/2026 08 PM PDT 15.50 4872 - Normal
04/16/2026 09 PM PDT 15.47 4827 - Normal
04/16/2026 10 PM PDT 15.46 4812 - Normal
04/16/2026 11 PM PDT 15.42 4752 - Normal
04/17/2026 12 AM PDT 15.41 4737 - Normal
04/17/2026 01 AM PDT 15.37 4678 - Normal
04/17/2026 02 AM PDT 15.35 4648 - Normal
04/17/2026 03 AM PDT 15.31 4589 - Normal
04/17/2026 04 AM PDT 15.29 4560 - Normal
04/17/2026 05 AM PDT 15.27 4531 - Normal
04/17/2026 06 AM PDT 15.22 4458 - Normal
04/17/2026 07 AM PDT 15.21 4444 - Normal
04/17/2026 08 AM PDT 15.20 4429 - Normal
04/17/2026 09 AM PDT 15.15 4358 - Normal
04/17/2026 10 AM PDT 15.11 4301 - Normal
04/17/2026 11 AM PDT 15.10 4287 - Normal
04/17/2026 12 PM PDT 15.10 4287 0 Normal
04/17/2026 01 PM PDT 15.06 4230 - Normal
04/17/2026 02 PM PDT 15.03 4188 - Normal
04/17/2026 03 PM PDT 15.02 4174 - Normal
04/17/2026 04 PM PDT 15.00 4146 - Normal
04/17/2026 05 PM PDT 14.96 4091 - Normal
04/17/2026 06 PM PDT 14.96 4091 0 Normal
04/17/2026 07 PM PDT 14.93 4049 - Normal
04/17/2026 08 PM PDT 14.91 4022 - Normal
04/17/2026 09 PM PDT 14.91 4022 0 Normal
04/17/2026 10 PM PDT 14.90 4008 - Normal
04/17/2026 11 PM PDT 14.90 4008 0 Normal
04/18/2026 12 AM PDT 14.89 3995 - Normal
04/18/2026 01 AM PDT 14.94 4063 + Normal
04/18/2026 02 AM PDT 14.99 4132 + Normal
04/18/2026 03 AM PDT 15.04 4202 + Normal
04/18/2026 04 AM PDT 15.06 4230 + Normal
04/18/2026 05 AM PDT 15.08 4258 + Normal
04/18/2026 06 AM PDT 15.06 4230 - Normal
04/18/2026 07 AM PDT 15.05 4216 - Normal
04/18/2026 08 AM PDT 15.03 4188 - Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
04/18/2026 09 AM PDT 15.01 4160 Normal
04/18/2026 10 AM PDT 14.98 4118 - Normal
04/18/2026 11 AM PDT 14.96 4091 - Normal
04/18/2026 12 PM PDT 14.94 4063 - Normal
04/18/2026 01 PM PDT 14.91 4022 - Normal
04/18/2026 02 PM PDT 14.89 3995 - Normal
04/18/2026 03 PM PDT 14.87 3968 - Normal
04/18/2026 04 PM PDT 14.85 3940 - Normal
04/18/2026 05 PM PDT 14.83 3913 - Normal
04/18/2026 06 PM PDT 14.81 3886 - Normal
04/18/2026 07 PM PDT 14.79 3860 - Normal
04/18/2026 08 PM PDT 14.77 3833 - Normal
04/18/2026 09 PM PDT 14.74 3793 - Normal
04/18/2026 10 PM PDT 14.72 3766 - Normal
04/18/2026 11 PM PDT 14.69 3727 - Normal
04/19/2026 12 AM PDT 14.67 3701 - Normal
04/19/2026 01 AM PDT 14.65 3674 - Normal
04/19/2026 02 AM PDT 14.62 3635 - Normal
04/19/2026 03 AM PDT 14.60 3610 - Normal
04/19/2026 04 AM PDT 14.57 3571 - Normal
04/19/2026 05 AM PDT 14.55 3545 - Normal
04/19/2026 06 AM PDT 14.53 3520 - Normal
04/19/2026 07 AM PDT 14.51 3494 - Normal
04/19/2026 08 AM PDT 14.50 3481 - Normal
04/19/2026 09 AM PDT 14.49 3469 - Normal
04/19/2026 10 AM PDT 14.48 3456 - Normal
04/19/2026 11 AM PDT 14.47 3443 - Normal
04/19/2026 12 PM PDT 14.46 3431 - Normal
04/19/2026 01 PM PDT 14.46 3431 0 Normal
04/19/2026 02 PM PDT 14.45 3418 - Normal
04/19/2026 03 PM PDT 14.45 3418 0 Normal
04/19/2026 04 PM PDT 14.44 3406 - Normal
04/19/2026 05 PM PDT 14.43 3393 - Normal
04/19/2026 06 PM PDT 14.43 3393 0 Normal
04/19/2026 07 PM PDT 14.43 3393 0 Normal
04/19/2026 08 PM PDT 14.43 3393 0 Normal
04/19/2026 09 PM PDT 14.43 3393 0 Normal
04/19/2026 10 PM PDT 14.43 3393 0 Normal
04/19/2026 11 PM PDT 14.43 3393 0 Normal
04/20/2026 12 AM PDT 14.43 3393 0 Normal
04/20/2026 01 AM PDT 14.43 3393 0 Normal
04/20/2026 02 AM PDT 14.43 3393 0 Normal
04/20/2026 03 AM PDT 14.44 3406 + Normal
04/20/2026 04 AM PDT 14.44 3406 0 Normal
04/20/2026 05 AM PDT 14.44 3406 0 Normal
04/20/2026 06 AM PDT 14.45 3418 + Normal
04/20/2026 07 AM PDT 14.45 3418 0 Normal
04/20/2026 08 AM PDT 14.46 3431 + Normal
04/20/2026 09 AM PDT 14.46 3431 0 Normal
04/20/2026 10 AM PDT 14.46 3431 0 Normal
04/20/2026 11 AM PDT 14.47 3443 + Normal
04/20/2026 12 PM PDT 14.47 3443 0 Normal
04/20/2026 01 PM PDT 14.47 3443 0 Normal
04/20/2026 02 PM PDT 14.46 3431 - Normal
04/20/2026 03 PM PDT 14.46 3431 0 Normal
04/20/2026 04 PM PDT 14.45 3418 - Normal
04/20/2026 05 PM PDT 14.44 3406 - Normal
04/20/2026 06 PM PDT 14.43 3393 - Normal
04/20/2026 07 PM PDT 14.42 3381 - Normal
04/20/2026 08 PM PDT 14.42 3381 0 Normal
04/20/2026 09 PM PDT 14.41 3368 - Normal
04/20/2026 10 PM PDT 14.41 3368 0 Normal
04/20/2026 11 PM PDT 14.41 3368 0 Normal
04/21/2026 12 AM PDT 14.42 3381 + Normal
04/21/2026 01 AM PDT 14.43 3393 + Normal
04/21/2026 02 AM PDT 14.44 3406 + Normal
04/21/2026 03 AM PDT 14.46 3431 + Normal
04/21/2026 04 AM PDT 14.49 3469 + Normal
04/21/2026 05 AM PDT 14.52 3507 + Normal
04/21/2026 06 AM PDT 14.56 3558 + Normal
04/21/2026 07 AM PDT 14.61 3622 + Normal
04/21/2026 08 AM PDT 14.67 3701 + Normal
04/21/2026 09 AM PDT 14.75 3806 + Normal
04/21/2026 10 AM PDT 14.83 3913 + Normal
04/21/2026 11 AM PDT 14.93 4049 + Normal
04/21/2026 12 PM PDT 15.05 4216 + Normal
04/21/2026 01 PM PDT 15.17 4386 + Normal
04/21/2026 02 PM PDT 15.30 4575 + Normal
04/21/2026 03 PM PDT 15.43 4767 + Normal
04/21/2026 04 PM PDT 15.57 4979 + Normal
04/21/2026 05 PM PDT 15.69 5165 + Normal
04/21/2026 06 PM PDT 15.80 5338 + Normal
04/21/2026 07 PM PDT 15.90 5498 + Normal
04/21/2026 08 PM PDT 16.00 5661 + Normal
04/21/2026 09 PM PDT 16.08 5790 + Normal
04/21/2026 10 PM PDT 16.16 5920 + Normal
04/21/2026 11 PM PDT 16.24 6052 + Normal
04/22/2026 12 AM PDT 16.32 6185 + Normal
04/22/2026 01 AM PDT 16.39 6302 + Normal
04/22/2026 02 AM PDT 16.47 6438 + Normal
04/22/2026 03 AM PDT 16.55 6575 + Normal
04/22/2026 04 AM PDT 16.63 6714 + Normal
04/22/2026 05 AM PDT 16.71 6854 + Normal
04/22/2026 06 AM PDT 16.80 7013 + Normal
04/22/2026 07 AM PDT 16.88 7157 + Normal
04/22/2026 08 AM PDT 16.96 7303 + Normal
04/22/2026 09 AM PDT 17.03 7435 + Normal
04/22/2026 10 AM PDT 17.08 7530 + Normal
04/22/2026 11 AM PDT 17.13 7626 + Normal
04/22/2026 12 PM PDT 17.16 7684 + Normal
04/22/2026 01 PM PDT 17.18 7722 + Normal
04/22/2026 02 PM PDT 17.19 7742 + Normal
04/22/2026 03 PM PDT 17.20 7761 + Normal
04/22/2026 04 PM PDT 17.20 7761 0 Normal
04/22/2026 05 PM PDT 17.20 7761 0 Normal
04/22/2026 06 PM PDT 17.20 7761 0 Normal
04/22/2026 07 PM PDT 17.20 7761 0 Normal
04/22/2026 08 PM PDT 17.20 7761 0 Normal
04/22/2026 09 PM PDT 17.20 7761 0 Normal
04/22/2026 10 PM PDT 17.19 7742 - Normal
04/22/2026 11 PM PDT 17.19 7742 0 Normal
04/23/2026 12 AM PDT 17.19 7742 0 Normal
04/23/2026 01 AM PDT 17.18 7722 - Normal
04/23/2026 02 AM PDT 17.18 7722 0 Normal
04/23/2026 03 AM PDT 17.17 7703 - Normal
04/23/2026 04 AM PDT 17.17 7703 0 Normal
04/23/2026 05 AM PDT 17.16 7684 - 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.
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