TRINITY RIVER - ABOVE NORTH FORK TRINITY RIVER NEAR HELENA (TRNC1)
Latitude: 40.77º NLongitude: 123.11º WElevation: 1380 Feet
Location: Trinity County in CaliforniaBulletin Group: North CoastRiver Group: Klamath
Issuance Time: Jul 11 2025 at 7:46 AM PDTNext Issuance: Jul 12 2025 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: Trinity River - Above NF Trinity R Nr Helena (TRNC1)
#
# File Generation Time:  07/11/2025 at 07:49 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  07/11/2025 at 06:00 AM PDT
# Maximum Observed Stage:                       10.21 Feet
# Maximum Observed Flow:                        1028 cfs
#
# Earliest Date & Time of Maximum Forecast:     07/12/2025 at 08:00 AM PDT
# Maximum Forecast Stage:                       10.31 Feet
# Maximum Forecast Flow:                        1083 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  07/06/2025 07 AM PDT            9.81            821                Not Applicable
  07/06/2025 08 AM PDT            9.82            826         +      Not Applicable
  07/06/2025 09 AM PDT            9.83            831         +      Not Applicable
  07/06/2025 10 AM PDT            9.84            836         +      Not Applicable
  07/06/2025 11 AM PDT            9.84            836         0      Not Applicable
  07/06/2025 12 PM PDT            9.85            841         +      Not Applicable
  07/06/2025 01 PM PDT            9.85            841         0      Not Applicable
  07/06/2025 02 PM PDT            9.85            841         0      Not Applicable
  07/06/2025 03 PM PDT            9.85            841         0      Not Applicable
  07/06/2025 04 PM PDT            9.85            841         0      Not Applicable
  07/06/2025 05 PM PDT            9.84            836         -      Not Applicable
  07/06/2025 06 PM PDT            9.84            836         0      Not Applicable
  07/06/2025 07 PM PDT            9.84            836         0      Not Applicable
  07/06/2025 08 PM PDT            9.83            831         -      Not Applicable
  07/06/2025 09 PM PDT            9.83            831         0      Not Applicable
  07/06/2025 10 PM PDT            9.81            821         -      Not Applicable
  07/06/2025 11 PM PDT            9.81            821         0      Not Applicable
  07/07/2025 12 AM PDT            9.80            816         -      Not Applicable
  07/07/2025 01 AM PDT            9.81            821         +      Not Applicable
  07/07/2025 02 AM PDT            9.80            816         -      Not Applicable
  07/07/2025 03 AM PDT            9.80            816         0      Not Applicable
  07/07/2025 04 AM PDT            9.80            816         0      Not Applicable
  07/07/2025 05 AM PDT            9.81            821         +      Not Applicable
  07/07/2025 06 AM PDT            9.82            826         +      Not Applicable
  07/07/2025 07 AM PDT            9.82            826         0      Not Applicable
  07/07/2025 08 AM PDT            9.83            831         +      Not Applicable
  07/07/2025 09 AM PDT            9.84            836         +      Not Applicable
  07/07/2025 10 AM PDT            9.84            836         0      Not Applicable
  07/07/2025 11 AM PDT            9.84            836         0      Not Applicable
  07/07/2025 12 PM PDT            9.85            841         +      Not Applicable
  07/07/2025 01 PM PDT            9.85            841         0      Not Applicable
  07/07/2025 02 PM PDT            9.85            841         0      Not Applicable
  07/07/2025 03 PM PDT            9.85            841         0      Not Applicable
  07/07/2025 04 PM PDT            9.85            841         0      Not Applicable
  07/07/2025 05 PM PDT            9.83            831         -      Not Applicable
  07/07/2025 06 PM PDT            9.83            831         0      Not Applicable
  07/07/2025 07 PM PDT            9.82            826         -      Not Applicable
  07/07/2025 08 PM PDT            9.83            831         +      Not Applicable
  07/07/2025 09 PM PDT            9.82            826         -      Not Applicable
  07/07/2025 10 PM PDT            9.81            821         -      Not Applicable
  07/07/2025 11 PM PDT            9.80            816         -      Not Applicable
  07/08/2025 12 AM PDT            9.80            816         0      Not Applicable
  07/08/2025 01 AM PDT            9.80            816         0      Not Applicable
  07/08/2025 02 AM PDT            9.80            816         0      Not Applicable
  07/08/2025 03 AM PDT            9.80            816         0      Not Applicable
  07/08/2025 04 AM PDT            9.81            821         +      Not Applicable
  07/08/2025 05 AM PDT            9.81            821         0      Not Applicable
  07/08/2025 06 AM PDT            9.81            821         0      Not Applicable
  07/08/2025 07 AM PDT            9.83            831         +      Not Applicable
  07/08/2025 08 AM PDT            9.84            836         +      Not Applicable
  07/08/2025 09 AM PDT            9.84            836         0      Not Applicable
  07/08/2025 10 AM PDT            9.84            836         0      Not Applicable
  07/08/2025 11 AM PDT            9.85            841         +      Not Applicable
  07/08/2025 12 PM PDT            9.87            851         +      Not Applicable
  07/08/2025 01 PM PDT            9.90            866         +      Not Applicable
  07/08/2025 02 PM PDT            9.91            871         +      Not Applicable
  07/08/2025 03 PM PDT            9.90            866         -      Not Applicable
  07/08/2025 04 PM PDT            9.85            841         -      Not Applicable
  07/08/2025 05 PM PDT            9.85            841         0      Not Applicable
  07/08/2025 06 PM PDT            9.84            836         -      Not Applicable
  07/08/2025 07 PM PDT            9.83            831         -      Not Applicable
  07/08/2025 08 PM PDT            9.83            831         0      Not Applicable
  07/08/2025 09 PM PDT            9.83            831         0      Not Applicable
  07/08/2025 10 PM PDT            9.80            816         -      Not Applicable
  07/08/2025 11 PM PDT            9.83            831         +      Not Applicable
  07/09/2025 12 AM PDT            9.84            836         +      Not Applicable
  07/09/2025 01 AM PDT            9.85            841         +      Not Applicable
  07/09/2025 02 AM PDT            9.86            846         +      Not Applicable
  07/09/2025 03 AM PDT            9.87            851         +      Not Applicable
  07/09/2025 04 AM PDT            9.87            851         0      Not Applicable
  07/09/2025 05 AM PDT            9.88            856         +      Not Applicable
  07/09/2025 06 AM PDT            9.88            856         0      Not Applicable
  07/09/2025 07 AM PDT            9.89            861         +      Not Applicable
  07/09/2025 08 AM PDT            9.90            866         +      Not Applicable
  07/09/2025 09 AM PDT            9.92            876         +      Not Applicable
  07/09/2025 10 AM PDT            9.91            871         -      Not Applicable
  07/09/2025 11 AM PDT            9.93            881         +      Not Applicable
  07/09/2025 12 PM PDT            9.97            901         +      Not Applicable
  07/09/2025 01 PM PDT            9.99            911         +      Not Applicable
  07/09/2025 02 PM PDT           10.00            916         +      Not Applicable
  07/09/2025 03 PM PDT            9.99            911         -      Not Applicable
  07/09/2025 04 PM PDT            9.98            906         -      Not Applicable
  07/09/2025 05 PM PDT            9.95            891         -      Not Applicable
  07/09/2025 06 PM PDT            9.94            886         -      Not Applicable
  07/09/2025 07 PM PDT            9.95            891         +      Not Applicable
  07/09/2025 08 PM PDT            9.92            876         -      Not Applicable
  07/09/2025 09 PM PDT            9.92            876         0      Not Applicable
  07/09/2025 10 PM PDT            9.92            876         0      Not Applicable
  07/09/2025 11 PM PDT            9.94            886         +      Not Applicable
  07/10/2025 12 AM PDT            9.97            901         +      Not Applicable
  07/10/2025 01 AM PDT            9.98            906         +      Not Applicable
  07/10/2025 02 AM PDT            9.97            901         -      Not Applicable
  07/10/2025 03 AM PDT            9.99            911         +      Not Applicable
  07/10/2025 04 AM PDT           10.00            916         +      Not Applicable
  07/10/2025 05 AM PDT           10.02            927         +      Not Applicable
  07/10/2025 06 AM PDT           10.02            927         0      Not Applicable
  07/10/2025 07 AM PDT           10.03            932         +      Not Applicable
  07/10/2025 08 AM PDT           10.04            937         +      Not Applicable
  07/10/2025 09 AM PDT           10.06            948         +      Not Applicable
  07/10/2025 10 AM PDT           10.06            948         0      Not Applicable
  07/10/2025 11 AM PDT           10.07            953         +      Not Applicable
  07/10/2025 12 PM PDT           10.07            953         0      Not Applicable
  07/10/2025 01 PM PDT           10.09            963         +      Not Applicable
  07/10/2025 02 PM PDT           10.10            969         +      Not Applicable
  07/10/2025 03 PM PDT           10.10            969         0      Not Applicable
  07/10/2025 04 PM PDT           10.11            974         +      Not Applicable
  07/10/2025 05 PM PDT           10.14            990         +      Not Applicable
  07/10/2025 06 PM PDT           10.15            995         +      Not Applicable
  07/10/2025 07 PM PDT           10.18           1011         +      Not Applicable
  07/10/2025 08 PM PDT           10.20           1022         +      Not Applicable
  07/10/2025 09 PM PDT           10.20           1022         0      Not Applicable
  07/10/2025 10 PM PDT           10.19           1017         -      Not Applicable
  07/10/2025 11 PM PDT           10.20           1022         +      Not Applicable
  07/11/2025 12 AM PDT           10.19           1017         -      Not Applicable
  07/11/2025 01 AM PDT           10.19           1017         0      Not Applicable
  07/11/2025 02 AM PDT           10.19           1017         0      Not Applicable
  07/11/2025 03 AM PDT           10.20           1022         +      Not Applicable
  07/11/2025 04 AM PDT           10.20           1022         0      Not Applicable
  07/11/2025 05 AM PDT           10.21           1028         +      Not Applicable
  07/11/2025 06 AM PDT           10.21           1028         0      Not Applicable
  07/11/2025 07 AM PDT           10.20           1022         -      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  07/11/2025 08 AM PDT           10.20           1022                Not Applicable
  07/11/2025 09 AM PDT           10.20           1022         0      Not Applicable
  07/11/2025 10 AM PDT           10.21           1028         +      Not Applicable
  07/11/2025 11 AM PDT           10.21           1028         0      Not Applicable
  07/11/2025 12 PM PDT           10.21           1028         0      Not Applicable
  07/11/2025 01 PM PDT           10.21           1028         0      Not Applicable
  07/11/2025 02 PM PDT           10.21           1028         0      Not Applicable
  07/11/2025 03 PM PDT           10.22           1033         +      Not Applicable
  07/11/2025 04 PM PDT           10.22           1033         0      Not Applicable
  07/11/2025 05 PM PDT           10.22           1033         0      Not Applicable
  07/11/2025 06 PM PDT           10.22           1033         0      Not Applicable
  07/11/2025 07 PM PDT           10.22           1033         0      Not Applicable
  07/11/2025 08 PM PDT           10.22           1033         0      Not Applicable
  07/11/2025 09 PM PDT           10.22           1033         0      Not Applicable
  07/11/2025 10 PM PDT           10.22           1033         0      Not Applicable
  07/11/2025 11 PM PDT           10.22           1033         0      Not Applicable
  07/12/2025 12 AM PDT           10.23           1039         +      Not Applicable
  07/12/2025 01 AM PDT           10.26           1055         +      Not Applicable
  07/12/2025 02 AM PDT           10.28           1066         +      Not Applicable
  07/12/2025 03 AM PDT           10.29           1072         +      Not Applicable
  07/12/2025 04 AM PDT           10.29           1072         0      Not Applicable
  07/12/2025 05 AM PDT           10.30           1077         +      Not Applicable
  07/12/2025 06 AM PDT           10.30           1077         0      Not Applicable
  07/12/2025 07 AM PDT           10.30           1077         0      Not Applicable
  07/12/2025 08 AM PDT           10.31           1083         +      Not Applicable
  07/12/2025 09 AM PDT           10.31           1083         0      Not Applicable
  07/12/2025 10 AM PDT           10.31           1083         0      Not Applicable
  07/12/2025 11 AM PDT           10.31           1083         0      Not Applicable
  07/12/2025 12 PM PDT           10.31           1083         0      Not Applicable
  07/12/2025 01 PM PDT           10.31           1083         0      Not Applicable
  07/12/2025 02 PM PDT           10.31           1083         0      Not Applicable
  07/12/2025 03 PM PDT           10.31           1083         0      Not Applicable
  07/12/2025 04 PM PDT           10.31           1083         0      Not Applicable
  07/12/2025 05 PM PDT           10.31           1083         0      Not Applicable
  07/12/2025 06 PM PDT           10.31           1083         0      Not Applicable
  07/12/2025 07 PM PDT           10.30           1077         -      Not Applicable
  07/12/2025 08 PM PDT           10.30           1077         0      Not Applicable
  07/12/2025 09 PM PDT           10.30           1077         0      Not Applicable
  07/12/2025 10 PM PDT           10.30           1077         0      Not Applicable
  07/12/2025 11 PM PDT           10.30           1077         0      Not Applicable
  07/13/2025 12 AM PDT           10.30           1077         0      Not Applicable
  07/13/2025 01 AM PDT           10.30           1077         0      Not Applicable
  07/13/2025 02 AM PDT           10.30           1077         0      Not Applicable
  07/13/2025 03 AM PDT           10.30           1077         0      Not Applicable
  07/13/2025 04 AM PDT           10.30           1077         0      Not Applicable
  07/13/2025 05 AM PDT           10.30           1077         0      Not Applicable
  07/13/2025 06 AM PDT           10.30           1077         0      Not Applicable
  07/13/2025 07 AM PDT           10.30           1077         0      Not Applicable
  07/13/2025 08 AM PDT           10.30           1077         0      Not Applicable
  07/13/2025 09 AM PDT           10.30           1077         0      Not Applicable
  07/13/2025 10 AM PDT           10.30           1077         0      Not Applicable
  07/13/2025 11 AM PDT           10.30           1077         0      Not Applicable
  07/13/2025 12 PM PDT           10.30           1077         0      Not Applicable
  07/13/2025 01 PM PDT           10.30           1077         0      Not Applicable
  07/13/2025 02 PM PDT           10.30           1077         0      Not Applicable
  07/13/2025 03 PM PDT           10.30           1077         0      Not Applicable
  07/13/2025 04 PM PDT           10.30           1077         0      Not Applicable
  07/13/2025 05 PM PDT           10.30           1077         0      Not Applicable
  07/13/2025 06 PM PDT           10.30           1077         0      Not Applicable
  07/13/2025 07 PM PDT           10.30           1077         0      Not Applicable
  07/13/2025 08 PM PDT           10.30           1077         0      Not Applicable
  07/13/2025 09 PM PDT           10.30           1077         0      Not Applicable
  07/13/2025 10 PM PDT           10.30           1077         0      Not Applicable
  07/13/2025 11 PM PDT           10.30           1077         0      Not Applicable
  07/14/2025 12 AM PDT           10.30           1077         0      Not Applicable
  07/14/2025 01 AM PDT           10.30           1077         0      Not Applicable
  07/14/2025 02 AM PDT           10.30           1077         0      Not Applicable
  07/14/2025 03 AM PDT           10.30           1077         0      Not Applicable
  07/14/2025 04 AM PDT           10.30           1077         0      Not Applicable
  07/14/2025 05 AM PDT           10.30           1077         0      Not Applicable
  07/14/2025 06 AM PDT           10.30           1077         0      Not Applicable
  07/14/2025 07 AM PDT           10.30           1077         0      Not Applicable
  07/14/2025 08 AM PDT           10.30           1077         0      Not Applicable
  07/14/2025 09 AM PDT           10.30           1077         0      Not Applicable
  07/14/2025 10 AM PDT           10.30           1077         0      Not Applicable
  07/14/2025 11 AM PDT           10.30           1077         0      Not Applicable
  07/14/2025 12 PM PDT           10.30           1077         0      Not Applicable
  07/14/2025 01 PM PDT           10.29           1072         -      Not Applicable
  07/14/2025 02 PM PDT           10.29           1072         0      Not Applicable
  07/14/2025 03 PM PDT           10.29           1072         0      Not Applicable
  07/14/2025 04 PM PDT           10.29           1072         0      Not Applicable
  07/14/2025 05 PM PDT           10.29           1072         0      Not Applicable
  07/14/2025 06 PM PDT           10.29           1072         0      Not Applicable
  07/14/2025 07 PM PDT           10.29           1072         0      Not Applicable
  07/14/2025 08 PM PDT           10.27           1061         -      Not Applicable
  07/14/2025 09 PM PDT           10.22           1033         -      Not Applicable
  07/14/2025 10 PM PDT           10.19           1017         -      Not Applicable
  07/14/2025 11 PM PDT           10.16           1001         -      Not Applicable
  07/15/2025 12 AM PDT           10.14            990         -      Not Applicable
  07/15/2025 01 AM PDT           10.13            985         -      Not Applicable
  07/15/2025 02 AM PDT           10.12            979         -      Not Applicable
  07/15/2025 03 AM PDT           10.12            979         0      Not Applicable
  07/15/2025 04 AM PDT           10.12            979         0      Not Applicable
  07/15/2025 05 AM PDT           10.11            974         -      Not Applicable
  07/15/2025 06 AM PDT           10.11            974         0      Not Applicable
  07/15/2025 07 AM PDT           10.11            974         0      Not Applicable
  07/15/2025 08 AM PDT           10.11            974         0      Not Applicable
  07/15/2025 09 AM PDT           10.11            974         0      Not Applicable
  07/15/2025 10 AM PDT           10.11            974         0      Not Applicable
  07/15/2025 11 AM PDT           10.11            974         0      Not Applicable
  07/15/2025 12 PM PDT           10.11            974         0      Not Applicable
  07/15/2025 01 PM PDT           10.11            974         0      Not Applicable
  07/15/2025 02 PM PDT           10.11            974         0      Not Applicable
  07/15/2025 03 PM PDT           10.11            974         0      Not Applicable
  07/15/2025 04 PM PDT           10.11            974         0      Not Applicable
  07/15/2025 05 PM PDT           10.11            974         0      Not Applicable
  07/15/2025 06 PM PDT           10.10            969         -      Not Applicable
  07/15/2025 07 PM PDT           10.10            969         0      Not Applicable
  07/15/2025 08 PM PDT           10.10            969         0      Not Applicable
  07/15/2025 09 PM PDT           10.10            969         0      Not Applicable
  07/15/2025 10 PM PDT           10.10            969         0      Not Applicable
  07/15/2025 11 PM PDT           10.10            969         0      Not Applicable
  07/16/2025 12 AM PDT           10.10            969         0      Not Applicable
  07/16/2025 01 AM PDT           10.10            969         0      Not Applicable
  07/16/2025 02 AM PDT           10.10            969         0      Not Applicable
  07/16/2025 03 AM PDT           10.10            969         0      Not Applicable
  07/16/2025 04 AM PDT           10.10            969         0      Not Applicable
  07/16/2025 05 AM PDT           10.10            969         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.