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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: | Aug 13 2026 at 6:46 AM PDT | Next Issuance: | Aug 14 2026 at 9:00 AM PDT
| |
| 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: 08/13/2026 at 06:46 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 08/09/2026 at 03:00 PM PDT
# Maximum Observed Stage: 11.15 Feet
# Maximum Observed Flow: 613 cfs
#
# Earliest Date & Time of Maximum Forecast: 08/13/2026 at 12:00 PM PDT
# Maximum Forecast Stage: 11.12 Feet
# Maximum Forecast Flow: 598 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
08/08/2026 06 AM PDT 11.14 608 Normal
08/08/2026 07 AM PDT 11.14 608 0 Normal
08/08/2026 08 AM PDT 11.14 608 0 Normal
08/08/2026 09 AM PDT 11.15 613 + Normal
08/08/2026 10 AM PDT 11.15 613 0 Normal
08/08/2026 11 AM PDT 11.15 613 0 Normal
08/08/2026 12 PM PDT 11.15 613 0 Normal
08/08/2026 01 PM PDT 11.15 613 0 Normal
08/08/2026 02 PM PDT 11.14 608 - Normal
08/08/2026 03 PM PDT 11.15 613 + Normal
08/08/2026 04 PM PDT 11.15 613 0 Normal
08/08/2026 05 PM PDT 11.14 608 - Normal
08/08/2026 06 PM PDT 11.13 603 - Normal
08/08/2026 07 PM PDT 11.13 603 0 Normal
08/08/2026 08 PM PDT 11.12 598 - Normal
08/08/2026 09 PM PDT 11.13 603 + Normal
08/08/2026 10 PM PDT 11.12 598 - Normal
08/08/2026 11 PM PDT 11.13 603 + Normal
08/09/2026 12 AM PDT 11.12 598 - Normal
08/09/2026 01 AM PDT 11.12 598 0 Normal
08/09/2026 02 AM PDT 11.13 603 + Normal
08/09/2026 03 AM PDT 11.13 603 0 Normal
08/09/2026 04 AM PDT 11.12 598 - Normal
08/09/2026 05 AM PDT 11.12 598 0 Normal
08/09/2026 06 AM PDT 11.12 598 0 Normal
08/09/2026 07 AM PDT 11.12 598 0 Normal
08/09/2026 08 AM PDT 11.12 598 0 Normal
08/09/2026 09 AM PDT 11.13 603 + Normal
08/09/2026 10 AM PDT 11.14 608 + Normal
08/09/2026 11 AM PDT 11.14 608 0 Normal
08/09/2026 12 PM PDT 11.14 608 0 Normal
08/09/2026 01 PM PDT 11.14 608 0 Normal
08/09/2026 02 PM PDT 11.15 613 + Normal
08/09/2026 03 PM PDT 11.15 613 0 Normal
08/09/2026 04 PM PDT 11.14 608 - Normal
08/09/2026 05 PM PDT 11.14 608 0 Normal
08/09/2026 06 PM PDT 11.14 608 0 Normal
08/09/2026 07 PM PDT 11.13 603 - Normal
08/09/2026 08 PM PDT 11.13 603 0 Normal
08/09/2026 09 PM PDT 11.13 603 0 Normal
08/09/2026 10 PM PDT 11.13 603 0 Normal
08/09/2026 11 PM PDT 11.13 603 0 Normal
08/10/2026 12 AM PDT 11.13 603 0 Normal
08/10/2026 01 AM PDT 11.13 603 0 Normal
08/10/2026 02 AM PDT 11.13 603 0 Normal
08/10/2026 03 AM PDT 11.13 603 0 Normal
08/10/2026 04 AM PDT 11.12 598 - Normal
08/10/2026 05 AM PDT 11.12 598 0 Normal
08/10/2026 06 AM PDT 11.12 598 0 Normal
08/10/2026 07 AM PDT 11.12 598 0 Normal
08/10/2026 08 AM PDT 11.12 598 0 Normal
08/10/2026 09 AM PDT 11.13 603 + Normal
08/10/2026 10 AM PDT 11.13 603 0 Normal
08/10/2026 11 AM PDT 11.13 603 0 Normal
08/10/2026 12 PM PDT 11.13 603 0 Normal
08/10/2026 01 PM PDT 11.13 603 0 Normal
08/10/2026 02 PM PDT 11.14 608 + Normal
08/10/2026 03 PM PDT 11.14 608 0 Normal
08/10/2026 04 PM PDT 11.14 608 0 Normal
08/10/2026 05 PM PDT 11.13 603 - Normal
08/10/2026 06 PM PDT 11.13 603 0 Normal
08/10/2026 07 PM PDT 11.13 603 0 Normal
08/10/2026 08 PM PDT 11.12 598 - Normal
08/10/2026 09 PM PDT 11.13 603 + Normal
08/10/2026 10 PM PDT 11.12 598 - Normal
08/10/2026 11 PM PDT 11.12 598 0 Normal
08/11/2026 12 AM PDT 11.12 598 0 Normal
08/11/2026 01 AM PDT 11.12 598 0 Normal
08/11/2026 02 AM PDT 11.12 598 0 Normal
08/11/2026 03 AM PDT 11.12 598 0 Normal
08/11/2026 04 AM PDT 11.13 603 + Normal
08/11/2026 05 AM PDT 11.13 603 0 Normal
08/11/2026 06 AM PDT 11.12 598 - Normal
08/11/2026 07 AM PDT 11.13 603 + Normal
08/11/2026 08 AM PDT 11.13 603 0 Normal
08/11/2026 09 AM PDT 11.13 603 0 Normal
08/11/2026 10 AM PDT 11.14 608 + Normal
08/11/2026 11 AM PDT 11.13 603 - Normal
08/11/2026 12 PM PDT 11.13 603 0 Normal
08/11/2026 01 PM PDT 11.14 608 + Normal
08/11/2026 02 PM PDT 11.13 603 - Normal
08/11/2026 03 PM PDT 11.14 608 + Normal
08/11/2026 04 PM PDT 11.14 608 0 Normal
08/11/2026 05 PM PDT 11.13 603 - Normal
08/11/2026 06 PM PDT 11.13 603 0 Normal
08/11/2026 07 PM PDT 11.13 603 0 Normal
08/11/2026 08 PM PDT 11.12 598 - Normal
08/11/2026 09 PM PDT 11.12 598 0 Normal
08/11/2026 10 PM PDT 11.12 598 0 Normal
08/11/2026 11 PM PDT 11.12 598 0 Normal
08/12/2026 12 AM PDT 11.12 598 0 Normal
08/12/2026 01 AM PDT 11.11 593 - Normal
08/12/2026 02 AM PDT 11.11 593 0 Normal
08/12/2026 03 AM PDT 11.11 593 0 Normal
08/12/2026 04 AM PDT 11.11 593 0 Normal
08/12/2026 05 AM PDT 11.12 598 + Normal
08/12/2026 06 AM PDT 11.11 593 - Normal
08/12/2026 07 AM PDT 11.12 598 + Normal
08/12/2026 08 AM PDT 11.12 598 0 Normal
08/12/2026 09 AM PDT 11.12 598 0 Normal
08/12/2026 10 AM PDT 11.13 603 + Normal
08/12/2026 11 AM PDT 11.13 603 0 Normal
08/12/2026 12 PM PDT 11.13 603 0 Normal
08/12/2026 01 PM PDT 11.13 603 0 Normal
08/12/2026 02 PM PDT 11.13 603 0 Normal
08/12/2026 03 PM PDT 11.13 603 0 Normal
08/12/2026 04 PM PDT 11.13 603 0 Normal
08/12/2026 05 PM PDT 11.12 598 - Normal
08/12/2026 06 PM PDT 11.12 598 0 Normal
08/12/2026 07 PM PDT 11.12 598 0 Normal
08/12/2026 08 PM PDT 11.11 593 - Normal
08/12/2026 09 PM PDT 11.12 598 + Normal
08/12/2026 10 PM PDT 11.12 598 0 Normal
08/12/2026 11 PM PDT 11.11 593 - Normal
08/13/2026 12 AM PDT 11.12 598 + Normal
08/13/2026 01 AM PDT 11.11 593 - Normal
08/13/2026 02 AM PDT 11.11 593 0 Normal
08/13/2026 03 AM PDT 11.11 593 0 Normal
08/13/2026 04 AM PDT 11.11 593 0 Normal
08/13/2026 05 AM PDT 11.11 593 0 Normal
08/13/2026 06 AM PDT 11.11 593 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
08/13/2026 07 AM PDT 11.11 593 Normal
08/13/2026 08 AM PDT 11.11 593 0 Normal
08/13/2026 09 AM PDT 11.11 593 0 Normal
08/13/2026 10 AM PDT 11.11 593 0 Normal
08/13/2026 11 AM PDT 11.11 593 0 Normal
08/13/2026 12 PM PDT 11.12 598 + Normal
08/13/2026 01 PM PDT 11.12 598 0 Normal
08/13/2026 02 PM PDT 11.12 598 0 Normal
08/13/2026 03 PM PDT 11.12 598 0 Normal
08/13/2026 04 PM PDT 11.12 598 0 Normal
08/13/2026 05 PM PDT 11.12 598 0 Normal
08/13/2026 06 PM PDT 11.12 598 0 Normal
08/13/2026 07 PM PDT 11.12 598 0 Normal
08/13/2026 08 PM PDT 11.12 598 0 Normal
08/13/2026 09 PM PDT 11.12 598 0 Normal
08/13/2026 10 PM PDT 11.12 598 0 Normal
08/13/2026 11 PM PDT 11.12 598 0 Normal
08/14/2026 12 AM PDT 11.12 598 0 Normal
08/14/2026 01 AM PDT 11.12 598 0 Normal
08/14/2026 02 AM PDT 11.12 598 0 Normal
08/14/2026 03 AM PDT 11.12 598 0 Normal
08/14/2026 04 AM PDT 11.12 598 0 Normal
08/14/2026 05 AM PDT 11.12 598 0 Normal
08/14/2026 06 AM PDT 11.12 598 0 Normal
08/14/2026 07 AM PDT 11.12 598 0 Normal
08/14/2026 08 AM PDT 11.12 598 0 Normal
08/14/2026 09 AM PDT 11.12 598 0 Normal
08/14/2026 10 AM PDT 11.12 598 0 Normal
08/14/2026 11 AM PDT 11.12 598 0 Normal
08/14/2026 12 PM PDT 11.12 598 0 Normal
08/14/2026 01 PM PDT 11.12 598 0 Normal
08/14/2026 02 PM PDT 11.11 593 - Normal
08/14/2026 03 PM PDT 11.11 593 0 Normal
08/14/2026 04 PM PDT 11.11 593 0 Normal
08/14/2026 05 PM PDT 11.10 588 - Normal
08/14/2026 06 PM PDT 11.10 588 0 Normal
08/14/2026 07 PM PDT 11.10 588 0 Normal
08/14/2026 08 PM PDT 11.10 588 0 Normal
08/14/2026 09 PM PDT 11.09 583 - Normal
08/14/2026 10 PM PDT 11.09 583 0 Normal
08/14/2026 11 PM PDT 11.09 583 0 Normal
08/15/2026 12 AM PDT 11.09 583 0 Normal
08/15/2026 01 AM PDT 11.09 583 0 Normal
08/15/2026 02 AM PDT 11.09 583 0 Normal
08/15/2026 03 AM PDT 11.09 583 0 Normal
08/15/2026 04 AM PDT 11.09 583 0 Normal
08/15/2026 05 AM PDT 11.09 583 0 Normal
08/15/2026 06 AM PDT 11.09 583 0 Normal
08/15/2026 07 AM PDT 11.09 583 0 Normal
08/15/2026 08 AM PDT 11.09 583 0 Normal
08/15/2026 09 AM PDT 11.08 578 - Normal
08/15/2026 10 AM PDT 11.08 578 0 Normal
08/15/2026 11 AM PDT 11.08 578 0 Normal
08/15/2026 12 PM PDT 11.08 578 0 Normal
08/15/2026 01 PM PDT 11.08 578 0 Normal
08/15/2026 02 PM PDT 11.08 578 0 Normal
08/15/2026 03 PM PDT 11.08 578 0 Normal
08/15/2026 04 PM PDT 11.08 578 0 Normal
08/15/2026 05 PM PDT 11.08 578 0 Normal
08/15/2026 06 PM PDT 11.08 578 0 Normal
08/15/2026 07 PM PDT 11.08 578 0 Normal
08/15/2026 08 PM PDT 11.08 578 0 Normal
08/15/2026 09 PM PDT 11.08 578 0 Normal
08/15/2026 10 PM PDT 11.08 578 0 Normal
08/15/2026 11 PM PDT 11.08 578 0 Normal
08/16/2026 12 AM PDT 11.08 578 0 Normal
08/16/2026 01 AM PDT 11.08 578 0 Normal
08/16/2026 02 AM PDT 11.08 578 0 Normal
08/16/2026 03 AM PDT 11.08 578 0 Normal
08/16/2026 04 AM PDT 11.07 573 - Normal
08/16/2026 05 AM PDT 11.07 573 0 Normal
08/16/2026 06 AM PDT 11.07 573 0 Normal
08/16/2026 07 AM PDT 11.07 573 0 Normal
08/16/2026 08 AM PDT 11.07 573 0 Normal
08/16/2026 09 AM PDT 11.07 573 0 Normal
08/16/2026 10 AM PDT 11.07 573 0 Normal
08/16/2026 11 AM PDT 11.07 573 0 Normal
08/16/2026 12 PM PDT 11.07 573 0 Normal
08/16/2026 01 PM PDT 11.07 573 0 Normal
08/16/2026 02 PM PDT 11.07 573 0 Normal
08/16/2026 03 PM PDT 11.07 573 0 Normal
08/16/2026 04 PM PDT 11.07 573 0 Normal
08/16/2026 05 PM PDT 11.07 573 0 Normal
08/16/2026 06 PM PDT 11.07 573 0 Normal
08/16/2026 07 PM PDT 11.07 573 0 Normal
08/16/2026 08 PM PDT 11.07 573 0 Normal
08/16/2026 09 PM PDT 11.07 573 0 Normal
08/16/2026 10 PM PDT 11.07 573 0 Normal
08/16/2026 11 PM PDT 11.07 573 0 Normal
08/17/2026 12 AM PDT 11.07 573 0 Normal
08/17/2026 01 AM PDT 11.07 573 0 Normal
08/17/2026 02 AM PDT 11.07 573 0 Normal
08/17/2026 03 AM PDT 11.06 568 - Normal
08/17/2026 04 AM PDT 11.06 568 0 Normal
08/17/2026 05 AM PDT 11.06 568 0 Normal
08/17/2026 06 AM PDT 11.06 568 0 Normal
08/17/2026 07 AM PDT 11.06 568 0 Normal
08/17/2026 08 AM PDT 11.06 568 0 Normal
08/17/2026 09 AM PDT 11.06 568 0 Normal
08/17/2026 10 AM PDT 11.06 568 0 Normal
08/17/2026 11 AM PDT 11.06 568 0 Normal
08/17/2026 12 PM PDT 11.06 568 0 Normal
08/17/2026 01 PM PDT 11.06 568 0 Normal
08/17/2026 02 PM PDT 11.06 568 0 Normal
08/17/2026 03 PM PDT 11.06 568 0 Normal
08/17/2026 04 PM PDT 11.06 568 0 Normal
08/17/2026 05 PM PDT 11.06 568 0 Normal
08/17/2026 06 PM PDT 11.06 568 0 Normal
08/17/2026 07 PM PDT 11.06 568 0 Normal
08/17/2026 08 PM PDT 11.06 568 0 Normal
08/17/2026 09 PM PDT 11.06 568 0 Normal
08/17/2026 10 PM PDT 11.06 568 0 Normal
08/17/2026 11 PM PDT 11.06 568 0 Normal
08/18/2026 12 AM PDT 11.06 568 0 Normal
08/18/2026 01 AM PDT 11.06 568 0 Normal
08/18/2026 02 AM PDT 11.06 568 0 Normal
08/18/2026 03 AM PDT 11.06 568 0 Normal
08/18/2026 04 AM PDT 11.06 568 0 Normal
08/18/2026 05 AM PDT 11.06 568 0 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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