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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: | Sep 23 2026 at 6:55 AM PDT | Next Issuance: | Sep 24 2026 at 9:00 AM PDT
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| Action: 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: 09/23/2026 at 06:55 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 09/18/2026 at 09:00 AM PDT
# Maximum Observed Stage: 12.42 Feet
# Maximum Observed Flow: 1440 cfs
#
# Earliest Date & Time of Maximum Forecast: 09/23/2026 at 07:00 AM PDT
# Maximum Forecast Stage: 12.22 Feet
# Maximum Forecast Flow: 1286 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
09/18/2026 06 AM PDT 12.42 1440 Normal
09/18/2026 07 AM PDT 12.41 1432 - Normal
09/18/2026 08 AM PDT 12.42 1440 + Normal
09/18/2026 09 AM PDT 12.42 1440 0 Normal
09/18/2026 10 AM PDT 12.41 1432 - Normal
09/18/2026 11 AM PDT 12.41 1432 0 Normal
09/18/2026 12 PM PDT 12.40 1424 - Normal
09/18/2026 01 PM PDT 12.41 1432 + Normal
09/18/2026 02 PM PDT 12.41 1432 0 Normal
09/18/2026 03 PM PDT 12.41 1432 0 Normal
09/18/2026 04 PM PDT 12.40 1424 - Normal
09/18/2026 05 PM PDT 12.39 1417 - Normal
09/18/2026 06 PM PDT 12.39 1417 0 Normal
09/18/2026 07 PM PDT 12.38 1409 - Normal
09/18/2026 08 PM PDT 12.38 1409 0 Normal
09/18/2026 09 PM PDT 12.37 1401 - Normal
09/18/2026 10 PM PDT 12.38 1409 + Normal
09/18/2026 11 PM PDT 12.38 1409 0 Normal
09/19/2026 12 AM PDT 12.38 1409 0 Normal
09/19/2026 01 AM PDT 12.38 1409 0 Normal
09/19/2026 02 AM PDT 12.39 1417 + Normal
09/19/2026 03 AM PDT 12.39 1417 0 Normal
09/19/2026 04 AM PDT 12.40 1424 + Normal
09/19/2026 05 AM PDT 12.40 1424 0 Normal
09/19/2026 06 AM PDT 12.40 1424 0 Normal
09/19/2026 07 AM PDT 12.41 1432 + Normal
09/19/2026 08 AM PDT 12.41 1432 0 Normal
09/19/2026 09 AM PDT 12.40 1424 - Normal
09/19/2026 10 AM PDT 12.41 1432 + Normal
09/19/2026 11 AM PDT 12.41 1432 0 Normal
09/19/2026 12 PM PDT 12.40 1424 - Normal
09/19/2026 01 PM PDT 12.40 1424 0 Normal
09/19/2026 02 PM PDT 12.40 1424 0 Normal
09/19/2026 03 PM PDT 12.39 1417 - Normal
09/19/2026 04 PM PDT 12.38 1409 - Normal
09/19/2026 05 PM PDT 12.38 1409 0 Normal
09/19/2026 06 PM PDT 12.39 1417 + Normal
09/19/2026 07 PM PDT 12.38 1409 - Normal
09/19/2026 08 PM PDT 12.38 1409 0 Normal
09/19/2026 09 PM PDT 12.37 1401 - Normal
09/19/2026 10 PM PDT 12.37 1401 0 Normal
09/19/2026 11 PM PDT 12.37 1401 0 Normal
09/20/2026 12 AM PDT 12.38 1409 + Normal
09/20/2026 01 AM PDT 12.38 1409 0 Normal
09/20/2026 02 AM PDT 12.40 1424 + Normal
09/20/2026 03 AM PDT 12.40 1424 0 Normal
09/20/2026 04 AM PDT 12.41 1432 + Normal
09/20/2026 05 AM PDT 12.41 1432 0 Normal
09/20/2026 06 AM PDT 12.40 1424 - Normal
09/20/2026 07 AM PDT 12.41 1432 + Normal
09/20/2026 08 AM PDT 12.40 1424 - Normal
09/20/2026 09 AM PDT 12.40 1424 0 Normal
09/20/2026 10 AM PDT 12.40 1424 0 Normal
09/20/2026 11 AM PDT 12.41 1432 + Normal
09/20/2026 12 PM PDT 12.39 1417 - Normal
09/20/2026 01 PM PDT 12.40 1424 + Normal
09/20/2026 02 PM PDT 12.39 1417 - Normal
09/20/2026 03 PM PDT 12.39 1417 0 Normal
09/20/2026 04 PM PDT 12.38 1409 - Normal
09/20/2026 05 PM PDT 12.38 1409 0 Normal
09/20/2026 06 PM PDT 12.37 1401 - Normal
09/20/2026 07 PM PDT 12.37 1401 0 Normal
09/20/2026 08 PM PDT 12.37 1401 0 Normal
09/20/2026 09 PM PDT 12.37 1401 0 Normal
09/20/2026 10 PM PDT 12.37 1401 0 Normal
09/20/2026 11 PM PDT 12.37 1401 0 Normal
09/21/2026 12 AM PDT 12.37 1401 0 Normal
09/21/2026 01 AM PDT 12.38 1409 + Normal
09/21/2026 02 AM PDT 12.38 1409 0 Normal
09/21/2026 03 AM PDT 12.39 1417 + Normal
09/21/2026 04 AM PDT 12.39 1417 0 Normal
09/21/2026 05 AM PDT 12.40 1424 + Normal
09/21/2026 06 AM PDT 12.39 1417 - Normal
09/21/2026 07 AM PDT 12.38 1409 - Normal
09/21/2026 08 AM PDT 12.40 1424 + Normal
09/21/2026 09 AM PDT 12.39 1417 - Normal
09/21/2026 10 AM PDT 12.40 1424 + Normal
09/21/2026 11 AM PDT 12.39 1417 - Normal
09/21/2026 12 PM PDT 12.39 1417 0 Normal
09/21/2026 01 PM PDT 12.38 1409 - Normal
09/21/2026 02 PM PDT 12.38 1409 0 Normal
09/21/2026 03 PM PDT 12.38 1409 0 Normal
09/21/2026 04 PM PDT 12.38 1409 0 Normal
09/21/2026 05 PM PDT 12.37 1401 - Normal
09/21/2026 06 PM PDT 12.37 1401 0 Normal
09/21/2026 07 PM PDT 12.37 1401 0 Normal
09/21/2026 08 PM PDT 12.36 1393 - Normal
09/21/2026 09 PM PDT 12.36 1393 0 Normal
09/21/2026 10 PM PDT 12.36 1393 0 Normal
09/21/2026 11 PM PDT 12.37 1401 + Normal
09/22/2026 12 AM PDT 12.36 1393 - Normal
09/22/2026 01 AM PDT 12.36 1393 0 Normal
09/22/2026 02 AM PDT 12.37 1401 + Normal
09/22/2026 03 AM PDT 12.38 1409 + Normal
09/22/2026 04 AM PDT 12.36 1393 - Normal
09/22/2026 05 AM PDT 12.37 1401 + Normal
09/22/2026 06 AM PDT 12.38 1409 + Normal
09/22/2026 07 AM PDT 12.39 1417 + Normal
09/22/2026 08 AM PDT 12.38 1409 - Normal
09/22/2026 09 AM PDT 12.38 1409 0 Normal
09/22/2026 10 AM PDT 12.38 1409 0 Normal
09/22/2026 11 AM PDT 12.38 1409 0 Normal
09/22/2026 12 PM PDT 12.37 1401 - Normal
09/22/2026 01 PM PDT 12.38 1409 + Normal
09/22/2026 02 PM PDT 12.37 1401 - Normal
09/22/2026 03 PM PDT 12.38 1409 + Normal
09/22/2026 04 PM PDT 12.38 1409 0 Normal
09/22/2026 05 PM PDT 12.37 1401 - Normal
09/22/2026 06 PM PDT 12.36 1393 - Normal
09/22/2026 07 PM PDT 12.36 1393 0 Normal
09/22/2026 08 PM PDT 12.35 1385 - Normal
09/22/2026 09 PM PDT 12.34 1377 - Normal
09/22/2026 10 PM PDT 12.34 1377 0 Normal
09/22/2026 11 PM PDT 12.34 1377 0 Normal
09/23/2026 12 AM PDT 12.35 1385 + Normal
09/23/2026 01 AM PDT 12.35 1385 0 Normal
09/23/2026 02 AM PDT 12.33 1370 - Normal
09/23/2026 03 AM PDT 12.30 1346 - Normal
09/23/2026 04 AM PDT 12.28 1331 - Normal
09/23/2026 05 AM PDT 12.25 1308 - Normal
09/23/2026 06 AM PDT 12.24 1301 - Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
09/23/2026 07 AM PDT 12.22 1286 Normal
09/23/2026 08 AM PDT 12.20 1271 - Normal
09/23/2026 09 AM PDT 12.18 1256 - Normal
09/23/2026 10 AM PDT 12.17 1248 - Normal
09/23/2026 11 AM PDT 12.15 1234 - Normal
09/23/2026 12 PM PDT 12.13 1219 - Normal
09/23/2026 01 PM PDT 12.10 1197 - Normal
09/23/2026 02 PM PDT 12.07 1176 - Normal
09/23/2026 03 PM PDT 12.04 1154 - Normal
09/23/2026 04 PM PDT 12.00 1126 - Normal
09/23/2026 05 PM PDT 11.97 1105 - Normal
09/23/2026 06 PM PDT 11.93 1078 - Normal
09/23/2026 07 PM PDT 11.90 1057 - Normal
09/23/2026 08 PM PDT 11.87 1037 - Normal
09/23/2026 09 PM PDT 11.85 1024 - Normal
09/23/2026 10 PM PDT 11.83 1010 - Normal
09/23/2026 11 PM PDT 11.82 1004 - Normal
09/24/2026 12 AM PDT 11.80 991 - Normal
09/24/2026 01 AM PDT 11.78 978 - Normal
09/24/2026 02 AM PDT 11.76 965 - Normal
09/24/2026 03 AM PDT 11.74 952 - Normal
09/24/2026 04 AM PDT 11.72 939 - Normal
09/24/2026 05 AM PDT 11.69 920 - Normal
09/24/2026 06 AM PDT 11.66 901 - Normal
09/24/2026 07 AM PDT 11.63 883 - Normal
09/24/2026 08 AM PDT 11.61 870 - Normal
09/24/2026 09 AM PDT 11.58 852 - Normal
09/24/2026 10 AM PDT 11.55 834 - Normal
09/24/2026 11 AM PDT 11.52 816 - Normal
09/24/2026 12 PM PDT 11.50 805 - Normal
09/24/2026 01 PM PDT 11.47 787 - Normal
09/24/2026 02 PM PDT 11.46 781 - Normal
09/24/2026 03 PM PDT 11.44 770 - Normal
09/24/2026 04 PM PDT 11.43 764 - Normal
09/24/2026 05 PM PDT 11.41 753 - Normal
09/24/2026 06 PM PDT 11.40 747 - Normal
09/24/2026 07 PM PDT 11.40 747 0 Normal
09/24/2026 08 PM PDT 11.39 741 - Normal
09/24/2026 09 PM PDT 11.39 741 0 Normal
09/24/2026 10 PM PDT 11.38 736 - Normal
09/24/2026 11 PM PDT 11.38 736 0 Normal
09/25/2026 12 AM PDT 11.38 736 0 Normal
09/25/2026 01 AM PDT 11.38 736 0 Normal
09/25/2026 02 AM PDT 11.38 736 0 Normal
09/25/2026 03 AM PDT 11.38 736 0 Normal
09/25/2026 04 AM PDT 11.38 736 0 Normal
09/25/2026 05 AM PDT 11.38 736 0 Normal
09/25/2026 06 AM PDT 11.38 736 0 Normal
09/25/2026 07 AM PDT 11.38 736 0 Normal
09/25/2026 08 AM PDT 11.38 736 0 Normal
09/25/2026 09 AM PDT 11.37 730 - Normal
09/25/2026 10 AM PDT 11.37 730 0 Normal
09/25/2026 11 AM PDT 11.37 730 0 Normal
09/25/2026 12 PM PDT 11.38 736 + Normal
09/25/2026 01 PM PDT 11.38 736 0 Normal
09/25/2026 02 PM PDT 11.38 736 0 Normal
09/25/2026 03 PM PDT 11.38 736 0 Normal
09/25/2026 04 PM PDT 11.38 736 0 Normal
09/25/2026 05 PM PDT 11.38 736 0 Normal
09/25/2026 06 PM PDT 11.38 736 0 Normal
09/25/2026 07 PM PDT 11.38 736 0 Normal
09/25/2026 08 PM PDT 11.38 736 0 Normal
09/25/2026 09 PM PDT 11.38 736 0 Normal
09/25/2026 10 PM PDT 11.38 736 0 Normal
09/25/2026 11 PM PDT 11.38 736 0 Normal
09/26/2026 12 AM PDT 11.38 736 0 Normal
09/26/2026 01 AM PDT 11.38 736 0 Normal
09/26/2026 02 AM PDT 11.38 736 0 Normal
09/26/2026 03 AM PDT 11.38 736 0 Normal
09/26/2026 04 AM PDT 11.38 736 0 Normal
09/26/2026 05 AM PDT 11.38 736 0 Normal
09/26/2026 06 AM PDT 11.38 736 0 Normal
09/26/2026 07 AM PDT 11.38 736 0 Normal
09/26/2026 08 AM PDT 11.38 736 0 Normal
09/26/2026 09 AM PDT 11.37 730 - Normal
09/26/2026 10 AM PDT 11.37 730 0 Normal
09/26/2026 11 AM PDT 11.37 730 0 Normal
09/26/2026 12 PM PDT 11.37 730 0 Normal
09/26/2026 01 PM PDT 11.37 730 0 Normal
09/26/2026 02 PM PDT 11.37 730 0 Normal
09/26/2026 03 PM PDT 11.37 730 0 Normal
09/26/2026 04 PM PDT 11.37 730 0 Normal
09/26/2026 05 PM PDT 11.37 730 0 Normal
09/26/2026 06 PM PDT 11.37 730 0 Normal
09/26/2026 07 PM PDT 11.37 730 0 Normal
09/26/2026 08 PM PDT 11.37 730 0 Normal
09/26/2026 09 PM PDT 11.37 730 0 Normal
09/26/2026 10 PM PDT 11.37 730 0 Normal
09/26/2026 11 PM PDT 11.37 730 0 Normal
09/27/2026 12 AM PDT 11.37 730 0 Normal
09/27/2026 01 AM PDT 11.37 730 0 Normal
09/27/2026 02 AM PDT 11.37 730 0 Normal
09/27/2026 03 AM PDT 11.37 730 0 Normal
09/27/2026 04 AM PDT 11.37 730 0 Normal
09/27/2026 05 AM PDT 11.37 730 0 Normal
09/27/2026 06 AM PDT 11.36 725 - Normal
09/27/2026 07 AM PDT 11.36 725 0 Normal
09/27/2026 08 AM PDT 11.36 725 0 Normal
09/27/2026 09 AM PDT 11.36 725 0 Normal
09/27/2026 10 AM PDT 11.36 725 0 Normal
09/27/2026 11 AM PDT 11.36 725 0 Normal
09/27/2026 12 PM PDT 11.36 725 0 Normal
09/27/2026 01 PM PDT 11.36 725 0 Normal
09/27/2026 02 PM PDT 11.36 725 0 Normal
09/27/2026 03 PM PDT 11.36 725 0 Normal
09/27/2026 04 PM PDT 11.36 725 0 Normal
09/27/2026 05 PM PDT 11.36 725 0 Normal
09/27/2026 06 PM PDT 11.36 725 0 Normal
09/27/2026 07 PM PDT 11.36 725 0 Normal
09/27/2026 08 PM PDT 11.36 725 0 Normal
09/27/2026 09 PM PDT 11.36 725 0 Normal
09/27/2026 10 PM PDT 11.36 725 0 Normal
09/27/2026 11 PM PDT 11.36 725 0 Normal
09/28/2026 12 AM PDT 11.36 725 0 Normal
09/28/2026 01 AM PDT 11.36 725 0 Normal
09/28/2026 02 AM PDT 11.36 725 0 Normal
09/28/2026 03 AM PDT 11.36 725 0 Normal
09/28/2026 04 AM PDT 11.36 725 0 Normal
09/28/2026 05 AM PDT 11.36 725 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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