SOUTH FORK TRINITY RIVER - HYAMPOM (HYMC1)
Latitude: 40.65º NLongitude: 123.49º WElevation: 1211 FeetForecast Type: Unofficial Location
Location: Trinity County in CaliforniaBulletin Group: North CoastRiver Group: Klamath
Issuance Time: May 27 2026 at 7:20 AM PDTNext Issuance: May 28 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:  05/27/2026 at 07:21 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/22/2026 at 02:00 PM PDT
# Maximum Observed Stage:                       3.53 Feet
# Maximum Observed Flow:                        391 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/28/2026 at 09:00 AM PDT
# Maximum Forecast Stage:                       3.59 Feet
# Maximum Forecast Flow:                        411 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/22/2026 07 AM PDT            3.53            391                Not Applicable
  05/22/2026 08 AM PDT            3.53            391         0      Not Applicable
  05/22/2026 09 AM PDT            3.53            391         0      Not Applicable
  05/22/2026 10 AM PDT            3.53            391         0      Not Applicable
  05/22/2026 11 AM PDT            3.52            388         -      Not Applicable
  05/22/2026 12 PM PDT            3.53            391         +      Not Applicable
  05/22/2026 01 PM PDT            3.53            391         0      Not Applicable
  05/22/2026 02 PM PDT            3.53            391         0      Not Applicable
  05/22/2026 03 PM PDT            3.52            388         -      Not Applicable
  05/22/2026 04 PM PDT            3.52            388         0      Not Applicable
  05/22/2026 05 PM PDT            3.51            385         -      Not Applicable
  05/22/2026 06 PM PDT            3.51            385         0      Not Applicable
  05/22/2026 07 PM PDT            3.51            385         0      Not Applicable
  05/22/2026 08 PM PDT            3.51            385         0      Not Applicable
  05/22/2026 09 PM PDT            3.51            385         0      Not Applicable
  05/22/2026 10 PM PDT            3.50            381         -      Not Applicable
  05/22/2026 11 PM PDT            3.51            385         +      Not Applicable
  05/23/2026 12 AM PDT            3.50            381         -      Not Applicable
  05/23/2026 01 AM PDT            3.50            381         0      Not Applicable
  05/23/2026 02 AM PDT            3.51            385         +      Not Applicable
  05/23/2026 03 AM PDT            3.50            381         -      Not Applicable
  05/23/2026 04 AM PDT            3.51            385         +      Not Applicable
  05/23/2026 05 AM PDT            3.50            381         -      Not Applicable
  05/23/2026 06 AM PDT            3.51            385         +      Not Applicable
  05/23/2026 07 AM PDT            3.50            381         -      Not Applicable
  05/23/2026 08 AM PDT            3.50            381         0      Not Applicable
  05/23/2026 09 AM PDT            3.50            381         0      Not Applicable
  05/23/2026 10 AM PDT            3.50            381         0      Not Applicable
  05/23/2026 11 AM PDT            3.50            381         0      Not Applicable
  05/23/2026 12 PM PDT            3.50            381         0      Not Applicable
  05/23/2026 01 PM PDT            3.50            381         0      Not Applicable
  05/23/2026 02 PM PDT            3.51            385         +      Not Applicable
  05/23/2026 03 PM PDT            3.50            381         -      Not Applicable
  05/23/2026 04 PM PDT            3.50            381         0      Not Applicable
  05/23/2026 05 PM PDT            3.49            378         -      Not Applicable
  05/23/2026 06 PM PDT            3.50            381         +      Not Applicable
  05/23/2026 07 PM PDT            3.49            378         -      Not Applicable
  05/23/2026 08 PM PDT            3.50            381         +      Not Applicable
  05/23/2026 09 PM PDT            3.49            378         -      Not Applicable
  05/23/2026 10 PM PDT            3.50            381         +      Not Applicable
  05/23/2026 11 PM PDT            3.49            378         -      Not Applicable
  05/24/2026 12 AM PDT            3.49            378         0      Not Applicable
  05/24/2026 01 AM PDT            3.49            378         0      Not Applicable
  05/24/2026 02 AM PDT            3.49            378         0      Not Applicable
  05/24/2026 03 AM PDT            3.49            378         0      Not Applicable
  05/24/2026 04 AM PDT            3.50            381         +      Not Applicable
  05/24/2026 05 AM PDT            3.50            381         0      Not Applicable
  05/24/2026 06 AM PDT            3.51            385         +      Not Applicable
  05/24/2026 07 AM PDT            3.51            385         0      Not Applicable
  05/24/2026 08 AM PDT            3.50            381         -      Not Applicable
  05/24/2026 09 AM PDT            3.50            381         0      Not Applicable
  05/24/2026 10 AM PDT            3.50            381         0      Not Applicable
  05/24/2026 11 AM PDT            3.50            381         0      Not Applicable
  05/24/2026 12 PM PDT            3.50            381         0      Not Applicable
  05/24/2026 01 PM PDT            3.49            378         -      Not Applicable
  05/24/2026 02 PM PDT            3.50            381         +      Not Applicable
  05/24/2026 03 PM PDT            3.48            375         -      Not Applicable
  05/24/2026 04 PM PDT            3.49            378         +      Not Applicable
  05/24/2026 05 PM PDT            3.48            375         -      Not Applicable
  05/24/2026 06 PM PDT            3.48            375         0      Not Applicable
  05/24/2026 07 PM PDT            3.48            375         0      Not Applicable
  05/24/2026 08 PM PDT            3.48            375         0      Not Applicable
  05/24/2026 09 PM PDT            3.46            369         -      Not Applicable
  05/24/2026 10 PM PDT            3.48            375         +      Not Applicable
  05/24/2026 11 PM PDT            3.47            372         -      Not Applicable
  05/25/2026 12 AM PDT            3.46            369         -      Not Applicable
  05/25/2026 01 AM PDT            3.47            372         +      Not Applicable
  05/25/2026 02 AM PDT            3.46            369         -      Not Applicable
  05/25/2026 03 AM PDT            3.46            369         0      Not Applicable
  05/25/2026 04 AM PDT            3.47            372         +      Not Applicable
  05/25/2026 05 AM PDT            3.47            372         0      Not Applicable
  05/25/2026 06 AM PDT            3.47            372         0      Not Applicable
  05/25/2026 07 AM PDT            3.46            369         -      Not Applicable
  05/25/2026 08 AM PDT            3.46            369         0      Not Applicable
  05/25/2026 09 AM PDT            3.47            372         +      Not Applicable
  05/25/2026 10 AM PDT            3.46            369         -      Not Applicable
  05/25/2026 11 AM PDT            3.47            372         +      Not Applicable
  05/25/2026 12 PM PDT            3.46            369         -      Not Applicable
  05/25/2026 01 PM PDT            3.46            369         0      Not Applicable
  05/25/2026 02 PM PDT            3.46            369         0      Not Applicable
  05/25/2026 03 PM PDT            3.45            366         -      Not Applicable
  05/25/2026 04 PM PDT            3.46            369         +      Not Applicable
  05/25/2026 05 PM PDT            3.46            369         0      Not Applicable
  05/25/2026 06 PM PDT            3.46            369         0      Not Applicable
  05/25/2026 07 PM PDT            3.46            369         0      Not Applicable
  05/25/2026 08 PM PDT            3.45            366         -      Not Applicable
  05/25/2026 09 PM PDT            3.45            366         0      Not Applicable
  05/25/2026 10 PM PDT            3.45            366         0      Not Applicable
  05/25/2026 11 PM PDT            3.44            362         -      Not Applicable
  05/26/2026 12 AM PDT            3.45            366         +      Not Applicable
  05/26/2026 01 AM PDT            3.44            362         -      Not Applicable
  05/26/2026 02 AM PDT            3.44            362         0      Not Applicable
  05/26/2026 03 AM PDT            3.44            362         0      Not Applicable
  05/26/2026 04 AM PDT            3.44            362         0      Not Applicable
  05/26/2026 05 AM PDT            3.44            362         0      Not Applicable
  05/26/2026 06 AM PDT            3.43            359         -      Not Applicable
  05/26/2026 07 AM PDT            3.44            362         +      Not Applicable
  05/26/2026 08 AM PDT            3.44            362         0      Not Applicable
  05/26/2026 09 AM PDT            3.44            362         0      Not Applicable
  05/26/2026 10 AM PDT            3.45            366         +      Not Applicable
  05/26/2026 11 AM PDT            3.45            366         0      Not Applicable
  05/26/2026 12 PM PDT            3.45            366         0      Not Applicable
  05/26/2026 01 PM PDT            3.44            362         -      Not Applicable
  05/26/2026 02 PM PDT            3.45            366         +      Not Applicable
  05/26/2026 03 PM PDT            3.45            366         0      Not Applicable
  05/26/2026 04 PM PDT            3.45            366         0      Not Applicable
  05/26/2026 05 PM PDT            3.45            366         0      Not Applicable
  05/26/2026 06 PM PDT            3.45            366         0      Not Applicable
  05/26/2026 07 PM PDT            3.45            366         0      Not Applicable
  05/26/2026 08 PM PDT            3.45            366         0      Not Applicable
  05/26/2026 09 PM PDT            3.45            366         0      Not Applicable
  05/26/2026 10 PM PDT            3.45            366         0      Not Applicable
  05/26/2026 11 PM PDT            3.45            366         0      Not Applicable
  05/27/2026 12 AM PDT            3.46            369         +      Not Applicable
  05/27/2026 01 AM PDT            3.47            372         +      Not Applicable
  05/27/2026 02 AM PDT            3.47            372         0      Not Applicable
  05/27/2026 03 AM PDT            3.47            372         0      Not Applicable
  05/27/2026 04 AM PDT            3.47            372         0      Not Applicable
  05/27/2026 05 AM PDT            3.47            372         0      Not Applicable
  05/27/2026 06 AM PDT            3.47            372         0      Not Applicable
  05/27/2026 07 AM PDT            3.47            372         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/27/2026 08 AM PDT            3.47            372                Not Applicable
  05/27/2026 09 AM PDT            3.47            372         0      Not Applicable
  05/27/2026 10 AM PDT            3.46            369         -      Not Applicable
  05/27/2026 11 AM PDT            3.46            369         0      Not Applicable
  05/27/2026 12 PM PDT            3.46            369         0      Not Applicable
  05/27/2026 01 PM PDT            3.46            369         0      Not Applicable
  05/27/2026 02 PM PDT            3.46            369         0      Not Applicable
  05/27/2026 03 PM PDT            3.46            369         0      Not Applicable
  05/27/2026 04 PM PDT            3.46            369         0      Not Applicable
  05/27/2026 05 PM PDT            3.46            369         0      Not Applicable
  05/27/2026 06 PM PDT            3.46            369         0      Not Applicable
  05/27/2026 07 PM PDT            3.46            369         0      Not Applicable
  05/27/2026 08 PM PDT            3.46            369         0      Not Applicable
  05/27/2026 09 PM PDT            3.47            372         +      Not Applicable
  05/27/2026 10 PM PDT            3.47            372         0      Not Applicable
  05/27/2026 11 PM PDT            3.48            375         +      Not Applicable
  05/28/2026 12 AM PDT            3.49            378         +      Not Applicable
  05/28/2026 01 AM PDT            3.50            381         +      Not Applicable
  05/28/2026 02 AM PDT            3.51            385         +      Not Applicable
  05/28/2026 03 AM PDT            3.53            391         +      Not Applicable
  05/28/2026 04 AM PDT            3.54            395         +      Not Applicable
  05/28/2026 05 AM PDT            3.55            398         +      Not Applicable
  05/28/2026 06 AM PDT            3.56            401         +      Not Applicable
  05/28/2026 07 AM PDT            3.58            408         +      Not Applicable
  05/28/2026 08 AM PDT            3.58            408         0      Not Applicable
  05/28/2026 09 AM PDT            3.59            411         +      Not Applicable
  05/28/2026 10 AM PDT            3.59            411         0      Not Applicable
  05/28/2026 11 AM PDT            3.59            411         0      Not Applicable
  05/28/2026 12 PM PDT            3.58            408         -      Not Applicable
  05/28/2026 01 PM PDT            3.58            408         0      Not Applicable
  05/28/2026 02 PM PDT            3.57            404         -      Not Applicable
  05/28/2026 03 PM PDT            3.56            401         -      Not Applicable
  05/28/2026 04 PM PDT            3.55            398         -      Not Applicable
  05/28/2026 05 PM PDT            3.54            395         -      Not Applicable
  05/28/2026 06 PM PDT            3.54            395         0      Not Applicable
  05/28/2026 07 PM PDT            3.53            391         -      Not Applicable
  05/28/2026 08 PM PDT            3.53            391         0      Not Applicable
  05/28/2026 09 PM PDT            3.52            388         -      Not Applicable
  05/28/2026 10 PM PDT            3.52            388         0      Not Applicable
  05/28/2026 11 PM PDT            3.52            388         0      Not Applicable
  05/29/2026 12 AM PDT            3.53            391         +      Not Applicable
  05/29/2026 01 AM PDT            3.53            391         0      Not Applicable
  05/29/2026 02 AM PDT            3.53            391         0      Not Applicable
  05/29/2026 03 AM PDT            3.54            395         +      Not Applicable
  05/29/2026 04 AM PDT            3.54            395         0      Not Applicable
  05/29/2026 05 AM PDT            3.54            395         0      Not Applicable
  05/29/2026 06 AM PDT            3.54            395         0      Not Applicable
  05/29/2026 07 AM PDT            3.54            395         0      Not Applicable
  05/29/2026 08 AM PDT            3.53            391         -      Not Applicable
  05/29/2026 09 AM PDT            3.53            391         0      Not Applicable
  05/29/2026 10 AM PDT            3.53            391         0      Not Applicable
  05/29/2026 11 AM PDT            3.52            388         -      Not Applicable
  05/29/2026 12 PM PDT            3.52            388         0      Not Applicable
  05/29/2026 01 PM PDT            3.52            388         0      Not Applicable
  05/29/2026 02 PM PDT            3.51            385         -      Not Applicable
  05/29/2026 03 PM PDT            3.51            385         0      Not Applicable
  05/29/2026 04 PM PDT            3.50            381         -      Not Applicable
  05/29/2026 05 PM PDT            3.50            381         0      Not Applicable
  05/29/2026 06 PM PDT            3.50            381         0      Not Applicable
  05/29/2026 07 PM PDT            3.49            378         -      Not Applicable
  05/29/2026 08 PM PDT            3.49            378         0      Not Applicable
  05/29/2026 09 PM PDT            3.48            375         -      Not Applicable
  05/29/2026 10 PM PDT            3.48            375         0      Not Applicable
  05/29/2026 11 PM PDT            3.48            375         0      Not Applicable
  05/30/2026 12 AM PDT            3.48            375         0      Not Applicable
  05/30/2026 01 AM PDT            3.47            372         -      Not Applicable
  05/30/2026 02 AM PDT            3.47            372         0      Not Applicable
  05/30/2026 03 AM PDT            3.47            372         0      Not Applicable
  05/30/2026 04 AM PDT            3.46            369         -      Not Applicable
  05/30/2026 05 AM PDT            3.46            369         0      Not Applicable
  05/30/2026 06 AM PDT            3.46            369         0      Not Applicable
  05/30/2026 07 AM PDT            3.46            369         0      Not Applicable
  05/30/2026 08 AM PDT            3.46            369         0      Not Applicable
  05/30/2026 09 AM PDT            3.46            369         0      Not Applicable
  05/30/2026 10 AM PDT            3.45            366         -      Not Applicable
  05/30/2026 11 AM PDT            3.45            366         0      Not Applicable
  05/30/2026 12 PM PDT            3.45            366         0      Not Applicable
  05/30/2026 01 PM PDT            3.45            366         0      Not Applicable
  05/30/2026 02 PM PDT            3.45            366         0      Not Applicable
  05/30/2026 03 PM PDT            3.45            366         0      Not Applicable
  05/30/2026 04 PM PDT            3.44            362         -      Not Applicable
  05/30/2026 05 PM PDT            3.44            362         0      Not Applicable
  05/30/2026 06 PM PDT            3.44            362         0      Not Applicable
  05/30/2026 07 PM PDT            3.44            362         0      Not Applicable
  05/30/2026 08 PM PDT            3.44            362         0      Not Applicable
  05/30/2026 09 PM PDT            3.44            362         0      Not Applicable
  05/30/2026 10 PM PDT            3.44            362         0      Not Applicable
  05/30/2026 11 PM PDT            3.44            362         0      Not Applicable
  05/31/2026 12 AM PDT            3.44            362         0      Not Applicable
  05/31/2026 01 AM PDT            3.44            362         0      Not Applicable
  05/31/2026 02 AM PDT            3.43            359         -      Not Applicable
  05/31/2026 03 AM PDT            3.43            359         0      Not Applicable
  05/31/2026 04 AM PDT            3.43            359         0      Not Applicable
  05/31/2026 05 AM PDT            3.43            359         0      Not Applicable
  05/31/2026 06 AM PDT            3.43            359         0      Not Applicable
  05/31/2026 07 AM PDT            3.43            359         0      Not Applicable
  05/31/2026 08 AM PDT            3.43            359         0      Not Applicable
  05/31/2026 09 AM PDT            3.43            359         0      Not Applicable
  05/31/2026 10 AM PDT            3.43            359         0      Not Applicable
  05/31/2026 11 AM PDT            3.42            356         -      Not Applicable
  05/31/2026 12 PM PDT            3.42            356         0      Not Applicable
  05/31/2026 01 PM PDT            3.42            356         0      Not Applicable
  05/31/2026 02 PM PDT            3.42            356         0      Not Applicable
  05/31/2026 03 PM PDT            3.42            356         0      Not Applicable
  05/31/2026 04 PM PDT            3.42            356         0      Not Applicable
  05/31/2026 05 PM PDT            3.42            356         0      Not Applicable
  05/31/2026 06 PM PDT            3.42            356         0      Not Applicable
  05/31/2026 07 PM PDT            3.42            356         0      Not Applicable
  05/31/2026 08 PM PDT            3.42            356         0      Not Applicable
  05/31/2026 09 PM PDT            3.42            356         0      Not Applicable
  05/31/2026 10 PM PDT            3.42            356         0      Not Applicable
  05/31/2026 11 PM PDT            3.41            353         -      Not Applicable
  06/01/2026 12 AM PDT            3.41            353         0      Not Applicable
  06/01/2026 01 AM PDT            3.41            353         0      Not Applicable
  06/01/2026 02 AM PDT            3.41            353         0      Not Applicable
  06/01/2026 03 AM PDT            3.41            353         0      Not Applicable
  06/01/2026 04 AM PDT            3.41            353         0      Not Applicable
  06/01/2026 05 AM PDT            3.41            353         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.