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SOUTH FORK TRINITY RIVER - HYAMPOM (HYMC1)
| Latitude: 40.65º N | Longitude: 123.49º W | Elevation: 1211 Feet | | Forecast Type: Unofficial Location |
| Location: Trinity County in California | Bulletin Group: North Coast | River Group: Klamath |
| Issuance Time: | May 15 2026 at 7:16 AM PDT | Next Issuance: | May 16 2026 at 9:00 AM PDT
| |
| Action/Monitor: N/A | Minor Flood: N/A | Moderate Flood: N/A | Major Flood: N/A |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: South Fork Trinity River - Hyampom (HYMC1)
#
# File Generation Time: 05/15/2026 at 07:18 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 05/10/2026 at 07:00 AM PDT
# Maximum Observed Stage: 3.86 Feet
# Maximum Observed Flow: 508 cfs
#
# Earliest Date & Time of Maximum Forecast: 05/15/2026 at 08:00 AM PDT
# Maximum Forecast Stage: 3.69 Feet
# Maximum Forecast Flow: 446 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
05/10/2026 07 AM PDT 3.86 508 Not Applicable
05/10/2026 08 AM PDT 3.85 504 - Not Applicable
05/10/2026 09 AM PDT 3.85 504 0 Not Applicable
05/10/2026 10 AM PDT 3.85 504 0 Not Applicable
05/10/2026 11 AM PDT 3.85 504 0 Not Applicable
05/10/2026 12 PM PDT 3.85 504 0 Not Applicable
05/10/2026 01 PM PDT 3.85 504 0 Not Applicable
05/10/2026 02 PM PDT 3.85 504 0 Not Applicable
05/10/2026 03 PM PDT 3.85 504 0 Not Applicable
05/10/2026 04 PM PDT 3.84 500 - Not Applicable
05/10/2026 05 PM PDT 3.85 504 + Not Applicable
05/10/2026 06 PM PDT 3.84 500 - Not Applicable
05/10/2026 07 PM PDT 3.83 497 - Not Applicable
05/10/2026 08 PM PDT 3.83 497 0 Not Applicable
05/10/2026 09 PM PDT 3.83 497 0 Not Applicable
05/10/2026 10 PM PDT 3.83 497 0 Not Applicable
05/10/2026 11 PM PDT 3.82 493 - Not Applicable
05/11/2026 12 AM PDT 3.81 489 - Not Applicable
05/11/2026 01 AM PDT 3.82 493 + Not Applicable
05/11/2026 02 AM PDT 3.82 493 0 Not Applicable
05/11/2026 03 AM PDT 3.81 489 - Not Applicable
05/11/2026 04 AM PDT 3.82 493 + Not Applicable
05/11/2026 05 AM PDT 3.81 489 - Not Applicable
05/11/2026 06 AM PDT 3.81 489 0 Not Applicable
05/11/2026 07 AM PDT 3.82 493 + Not Applicable
05/11/2026 08 AM PDT 3.82 493 0 Not Applicable
05/11/2026 09 AM PDT 3.81 489 - Not Applicable
05/11/2026 10 AM PDT 3.81 489 0 Not Applicable
05/11/2026 11 AM PDT 3.81 489 0 Not Applicable
05/11/2026 12 PM PDT 3.82 493 + Not Applicable
05/11/2026 01 PM PDT 3.81 489 - Not Applicable
05/11/2026 02 PM PDT 3.81 489 0 Not Applicable
05/11/2026 03 PM PDT 3.82 493 + Not Applicable
05/11/2026 04 PM PDT 3.80 485 - Not Applicable
05/11/2026 05 PM PDT 3.80 485 0 Not Applicable
05/11/2026 06 PM PDT 3.80 485 0 Not Applicable
05/11/2026 07 PM PDT 3.80 485 0 Not Applicable
05/11/2026 08 PM PDT 3.79 482 - Not Applicable
05/11/2026 09 PM PDT 3.79 482 0 Not Applicable
05/11/2026 10 PM PDT 3.79 482 0 Not Applicable
05/11/2026 11 PM PDT 3.79 482 0 Not Applicable
05/12/2026 12 AM PDT 3.77 474 - Not Applicable
05/12/2026 01 AM PDT 3.77 474 0 Not Applicable
05/12/2026 02 AM PDT 3.77 474 0 Not Applicable
05/12/2026 03 AM PDT 3.79 482 + Not Applicable
05/12/2026 04 AM PDT 3.78 478 - Not Applicable
05/12/2026 05 AM PDT 3.79 482 + Not Applicable
05/12/2026 06 AM PDT 3.79 482 0 Not Applicable
05/12/2026 07 AM PDT 3.78 478 - Not Applicable
05/12/2026 08 AM PDT 3.79 482 + Not Applicable
05/12/2026 09 AM PDT 3.78 478 - Not Applicable
05/12/2026 10 AM PDT 3.79 482 + Not Applicable
05/12/2026 11 AM PDT 3.79 482 0 Not Applicable
05/12/2026 12 PM PDT 3.78 478 - Not Applicable
05/12/2026 01 PM PDT 3.78 478 0 Not Applicable
05/12/2026 02 PM PDT 3.77 474 - Not Applicable
05/12/2026 03 PM PDT 3.78 478 + Not Applicable
05/12/2026 04 PM PDT 3.77 474 - Not Applicable
05/12/2026 05 PM PDT 3.78 478 + Not Applicable
05/12/2026 06 PM PDT 3.78 478 0 Not Applicable
05/12/2026 07 PM PDT 3.77 474 - Not Applicable
05/12/2026 08 PM PDT 3.77 474 0 Not Applicable
05/12/2026 09 PM PDT 3.76 471 - Not Applicable
05/12/2026 10 PM PDT 3.76 471 0 Not Applicable
05/12/2026 11 PM PDT 3.76 471 0 Not Applicable
05/13/2026 12 AM PDT 3.76 471 0 Not Applicable
05/13/2026 01 AM PDT 3.76 471 0 Not Applicable
05/13/2026 02 AM PDT 3.76 471 0 Not Applicable
05/13/2026 03 AM PDT 3.76 471 0 Not Applicable
05/13/2026 04 AM PDT 3.76 471 0 Not Applicable
05/13/2026 05 AM PDT 3.75 467 - Not Applicable
05/13/2026 06 AM PDT 3.76 471 + Not Applicable
05/13/2026 07 AM PDT 3.75 467 - Not Applicable
05/13/2026 08 AM PDT 3.76 471 + Not Applicable
05/13/2026 09 AM PDT 3.75 467 - Not Applicable
05/13/2026 10 AM PDT 3.74 464 - Not Applicable
05/13/2026 11 AM PDT 3.75 467 + Not Applicable
05/13/2026 12 PM PDT 3.75 467 0 Not Applicable
05/13/2026 01 PM PDT 3.75 467 0 Not Applicable
05/13/2026 02 PM PDT 3.74 464 - Not Applicable
05/13/2026 03 PM PDT 3.74 464 0 Not Applicable
05/13/2026 04 PM PDT 3.74 464 0 Not Applicable
05/13/2026 05 PM PDT 3.73 460 - Not Applicable
05/13/2026 06 PM PDT 3.73 460 0 Not Applicable
05/13/2026 07 PM PDT 3.74 464 + Not Applicable
05/13/2026 08 PM PDT 3.72 456 - Not Applicable
05/13/2026 09 PM PDT 3.71 453 - Not Applicable
05/13/2026 10 PM PDT 3.72 456 + Not Applicable
05/13/2026 11 PM PDT 3.72 456 0 Not Applicable
05/14/2026 12 AM PDT 3.73 460 + Not Applicable
05/14/2026 01 AM PDT 3.73 460 0 Not Applicable
05/14/2026 02 AM PDT 3.71 453 - Not Applicable
05/14/2026 03 AM PDT 3.71 453 0 Not Applicable
05/14/2026 04 AM PDT 3.72 456 + Not Applicable
05/14/2026 05 AM PDT 3.71 453 - Not Applicable
05/14/2026 06 AM PDT 3.72 456 + Not Applicable
05/14/2026 07 AM PDT 3.71 453 - Not Applicable
05/14/2026 08 AM PDT 3.72 456 + Not Applicable
05/14/2026 09 AM PDT 3.72 456 0 Not Applicable
05/14/2026 10 AM PDT 3.72 456 0 Not Applicable
05/14/2026 11 AM PDT 3.72 456 0 Not Applicable
05/14/2026 12 PM PDT 3.72 456 0 Not Applicable
05/14/2026 01 PM PDT 3.72 456 0 Not Applicable
05/14/2026 02 PM PDT 3.71 453 - Not Applicable
05/14/2026 03 PM PDT 3.72 456 + Not Applicable
05/14/2026 04 PM PDT 3.72 456 0 Not Applicable
05/14/2026 05 PM PDT 3.71 453 - Not Applicable
05/14/2026 06 PM PDT 3.71 453 0 Not Applicable
05/14/2026 07 PM PDT 3.70 449 - Not Applicable
05/14/2026 08 PM PDT 3.69 446 - Not Applicable
05/14/2026 09 PM PDT 3.70 449 + Not Applicable
05/14/2026 10 PM PDT 3.70 449 0 Not Applicable
05/14/2026 11 PM PDT 3.70 449 0 Not Applicable
05/15/2026 12 AM PDT 3.70 449 0 Not Applicable
05/15/2026 01 AM PDT 3.70 449 0 Not Applicable
05/15/2026 02 AM PDT 3.70 449 0 Not Applicable
05/15/2026 03 AM PDT 3.70 449 0 Not Applicable
05/15/2026 04 AM PDT 3.69 446 - Not Applicable
05/15/2026 05 AM PDT 3.69 446 0 Not Applicable
05/15/2026 06 AM PDT 3.69 446 0 Not Applicable
05/15/2026 07 AM PDT 3.69 446 0 Not Applicable
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
05/15/2026 08 AM PDT 3.69 446 Not Applicable
05/15/2026 09 AM PDT 3.69 446 0 Not Applicable
05/15/2026 10 AM PDT 3.69 446 0 Not Applicable
05/15/2026 11 AM PDT 3.69 446 0 Not Applicable
05/15/2026 12 PM PDT 3.68 442 - Not Applicable
05/15/2026 01 PM PDT 3.68 442 0 Not Applicable
05/15/2026 02 PM PDT 3.68 442 0 Not Applicable
05/15/2026 03 PM PDT 3.68 442 0 Not Applicable
05/15/2026 04 PM PDT 3.68 442 0 Not Applicable
05/15/2026 05 PM PDT 3.68 442 0 Not Applicable
05/15/2026 06 PM PDT 3.68 442 0 Not Applicable
05/15/2026 07 PM PDT 3.68 442 0 Not Applicable
05/15/2026 08 PM PDT 3.68 442 0 Not Applicable
05/15/2026 09 PM PDT 3.68 442 0 Not Applicable
05/15/2026 10 PM PDT 3.67 439 - Not Applicable
05/15/2026 11 PM PDT 3.67 439 0 Not Applicable
05/16/2026 12 AM PDT 3.67 439 0 Not Applicable
05/16/2026 01 AM PDT 3.67 439 0 Not Applicable
05/16/2026 02 AM PDT 3.67 439 0 Not Applicable
05/16/2026 03 AM PDT 3.67 439 0 Not Applicable
05/16/2026 04 AM PDT 3.67 439 0 Not Applicable
05/16/2026 05 AM PDT 3.67 439 0 Not Applicable
05/16/2026 06 AM PDT 3.67 439 0 Not Applicable
05/16/2026 07 AM PDT 3.67 439 0 Not Applicable
05/16/2026 08 AM PDT 3.67 439 0 Not Applicable
05/16/2026 09 AM PDT 3.67 439 0 Not Applicable
05/16/2026 10 AM PDT 3.67 439 0 Not Applicable
05/16/2026 11 AM PDT 3.67 439 0 Not Applicable
05/16/2026 12 PM PDT 3.66 435 - Not Applicable
05/16/2026 01 PM PDT 3.66 435 0 Not Applicable
05/16/2026 02 PM PDT 3.66 435 0 Not Applicable
05/16/2026 03 PM PDT 3.66 435 0 Not Applicable
05/16/2026 04 PM PDT 3.66 435 0 Not Applicable
05/16/2026 05 PM PDT 3.66 435 0 Not Applicable
05/16/2026 06 PM PDT 3.66 435 0 Not Applicable
05/16/2026 07 PM PDT 3.66 435 0 Not Applicable
05/16/2026 08 PM PDT 3.66 435 0 Not Applicable
05/16/2026 09 PM PDT 3.66 435 0 Not Applicable
05/16/2026 10 PM PDT 3.65 432 - Not Applicable
05/16/2026 11 PM PDT 3.65 432 0 Not Applicable
05/17/2026 12 AM PDT 3.65 432 0 Not Applicable
05/17/2026 01 AM PDT 3.65 432 0 Not Applicable
05/17/2026 02 AM PDT 3.65 432 0 Not Applicable
05/17/2026 03 AM PDT 3.65 432 0 Not Applicable
05/17/2026 04 AM PDT 3.65 432 0 Not Applicable
05/17/2026 05 AM PDT 3.65 432 0 Not Applicable
05/17/2026 06 AM PDT 3.65 432 0 Not Applicable
05/17/2026 07 AM PDT 3.65 432 0 Not Applicable
05/17/2026 08 AM PDT 3.65 432 0 Not Applicable
05/17/2026 09 AM PDT 3.65 432 0 Not Applicable
05/17/2026 10 AM PDT 3.65 432 0 Not Applicable
05/17/2026 11 AM PDT 3.64 428 - Not Applicable
05/17/2026 12 PM PDT 3.64 428 0 Not Applicable
05/17/2026 01 PM PDT 3.64 428 0 Not Applicable
05/17/2026 02 PM PDT 3.64 428 0 Not Applicable
05/17/2026 03 PM PDT 3.64 428 0 Not Applicable
05/17/2026 04 PM PDT 3.64 428 0 Not Applicable
05/17/2026 05 PM PDT 3.64 428 0 Not Applicable
05/17/2026 06 PM PDT 3.64 428 0 Not Applicable
05/17/2026 07 PM PDT 3.64 428 0 Not Applicable
05/17/2026 08 PM PDT 3.64 428 0 Not Applicable
05/17/2026 09 PM PDT 3.64 428 0 Not Applicable
05/17/2026 10 PM PDT 3.64 428 0 Not Applicable
05/17/2026 11 PM PDT 3.63 425 - Not Applicable
05/18/2026 12 AM PDT 3.63 425 0 Not Applicable
05/18/2026 01 AM PDT 3.63 425 0 Not Applicable
05/18/2026 02 AM PDT 3.63 425 0 Not Applicable
05/18/2026 03 AM PDT 3.63 425 0 Not Applicable
05/18/2026 04 AM PDT 3.63 425 0 Not Applicable
05/18/2026 05 AM PDT 3.63 425 0 Not Applicable
05/18/2026 06 AM PDT 3.63 425 0 Not Applicable
05/18/2026 07 AM PDT 3.63 425 0 Not Applicable
05/18/2026 08 AM PDT 3.63 425 0 Not Applicable
05/18/2026 09 AM PDT 3.63 425 0 Not Applicable
05/18/2026 10 AM PDT 3.63 425 0 Not Applicable
05/18/2026 11 AM PDT 3.62 421 - Not Applicable
05/18/2026 12 PM PDT 3.62 421 0 Not Applicable
05/18/2026 01 PM PDT 3.62 421 0 Not Applicable
05/18/2026 02 PM PDT 3.62 421 0 Not Applicable
05/18/2026 03 PM PDT 3.62 421 0 Not Applicable
05/18/2026 04 PM PDT 3.62 421 0 Not Applicable
05/18/2026 05 PM PDT 3.62 421 0 Not Applicable
05/18/2026 06 PM PDT 3.62 421 0 Not Applicable
05/18/2026 07 PM PDT 3.62 421 0 Not Applicable
05/18/2026 08 PM PDT 3.62 421 0 Not Applicable
05/18/2026 09 PM PDT 3.62 421 0 Not Applicable
05/18/2026 10 PM PDT 3.62 421 0 Not Applicable
05/18/2026 11 PM PDT 3.62 421 0 Not Applicable
05/19/2026 12 AM PDT 3.62 421 0 Not Applicable
05/19/2026 01 AM PDT 3.61 418 - Not Applicable
05/19/2026 02 AM PDT 3.61 418 0 Not Applicable
05/19/2026 03 AM PDT 3.61 418 0 Not Applicable
05/19/2026 04 AM PDT 3.61 418 0 Not Applicable
05/19/2026 05 AM PDT 3.61 418 0 Not Applicable
05/19/2026 06 AM PDT 3.61 418 0 Not Applicable
05/19/2026 07 AM PDT 3.61 418 0 Not Applicable
05/19/2026 08 AM PDT 3.61 418 0 Not Applicable
05/19/2026 09 AM PDT 3.61 418 0 Not Applicable
05/19/2026 10 AM PDT 3.61 418 0 Not Applicable
05/19/2026 11 AM PDT 3.61 418 0 Not Applicable
05/19/2026 12 PM PDT 3.61 418 0 Not Applicable
05/19/2026 01 PM PDT 3.60 415 - Not Applicable
05/19/2026 02 PM PDT 3.60 415 0 Not Applicable
05/19/2026 03 PM PDT 3.60 415 0 Not Applicable
05/19/2026 04 PM PDT 3.60 415 0 Not Applicable
05/19/2026 05 PM PDT 3.60 415 0 Not Applicable
05/19/2026 06 PM PDT 3.60 415 0 Not Applicable
05/19/2026 07 PM PDT 3.60 415 0 Not Applicable
05/19/2026 08 PM PDT 3.60 415 0 Not Applicable
05/19/2026 09 PM PDT 3.60 415 0 Not Applicable
05/19/2026 10 PM PDT 3.60 415 0 Not Applicable
05/19/2026 11 PM PDT 3.60 415 0 Not Applicable
05/20/2026 12 AM PDT 3.60 415 0 Not Applicable
05/20/2026 01 AM PDT 3.60 415 0 Not Applicable
05/20/2026 02 AM PDT 3.60 415 0 Not Applicable
05/20/2026 03 AM PDT 3.59 411 - Not Applicable
05/20/2026 04 AM PDT 3.59 411 0 Not Applicable
05/20/2026 05 AM PDT 3.59 411 0 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.
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