National Weather Service California-Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

 | 

TRINITY RIVER - ABOVE NORTH FORK TRINITY RIVER NEAR HELENA (TRNC1)
Latitude: 40.77º NLongitude: 123.11º WElevation: 1380 FeetForecast Type: Unofficial Location
Location: Trinity County in CaliforniaBulletin Group: North CoastRiver Group: Klamath
Issuance Time: Jun 19 2026 at 6:57 AM PDTNext Issuance: Jun 20 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: Trinity River - Above NF Trinity R Nr Helena (TRNC1)
#
# File Generation Time:  06/19/2026 at 06:59 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  06/16/2026 at 01:00 AM PDT
# Maximum Observed Stage:                       10.95 Feet
# Maximum Observed Flow:                        1426 cfs
#
# Earliest Date & Time of Maximum Forecast:     06/19/2026 at 07:00 AM PDT
# Maximum Forecast Stage:                       10.23 Feet
# Maximum Forecast Flow:                        1004 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  06/14/2026 06 AM PDT           10.32           1053                Not Applicable
  06/14/2026 07 AM PDT           10.32           1053         0      Not Applicable
  06/14/2026 08 AM PDT           10.37           1081         +      Not Applicable
  06/14/2026 09 AM PDT           10.39           1092         +      Not Applicable
  06/14/2026 10 AM PDT           10.40           1098         +      Not Applicable
  06/14/2026 11 AM PDT           10.42           1109         +      Not Applicable
  06/14/2026 12 PM PDT           10.41           1103         -      Not Applicable
  06/14/2026 01 PM PDT           10.42           1109         +      Not Applicable
  06/14/2026 02 PM PDT           10.41           1103         -      Not Applicable
  06/14/2026 03 PM PDT           10.40           1098         -      Not Applicable
  06/14/2026 04 PM PDT           10.40           1098         0      Not Applicable
  06/14/2026 05 PM PDT           10.40           1098         0      Not Applicable
  06/14/2026 06 PM PDT           10.41           1103         +      Not Applicable
  06/14/2026 07 PM PDT           10.44           1120         +      Not Applicable
  06/14/2026 08 PM PDT           10.45           1126         +      Not Applicable
  06/14/2026 09 PM PDT           10.47           1137         +      Not Applicable
  06/14/2026 10 PM PDT           10.48           1143         +      Not Applicable
  06/14/2026 11 PM PDT           10.48           1143         0      Not Applicable
  06/15/2026 12 AM PDT           10.50           1154         +      Not Applicable
  06/15/2026 01 AM PDT           10.50           1154         0      Not Applicable
  06/15/2026 02 AM PDT           10.53           1172         +      Not Applicable
  06/15/2026 03 AM PDT           10.63           1230         +      Not Applicable
  06/15/2026 04 AM PDT           10.75           1302         +      Not Applicable
  06/15/2026 05 AM PDT           10.79           1327         +      Not Applicable
  06/15/2026 06 AM PDT           10.83           1351         +      Not Applicable
  06/15/2026 07 AM PDT           10.89           1388         +      Not Applicable
  06/15/2026 08 AM PDT           10.91           1401         +      Not Applicable
  06/15/2026 09 AM PDT           10.90           1394         -      Not Applicable
  06/15/2026 10 AM PDT           10.92           1407         +      Not Applicable
  06/15/2026 11 AM PDT           10.93           1413         +      Not Applicable
  06/15/2026 12 PM PDT           10.92           1407         -      Not Applicable
  06/15/2026 01 PM PDT           10.93           1413         +      Not Applicable
  06/15/2026 02 PM PDT           10.93           1413         0      Not Applicable
  06/15/2026 03 PM PDT           10.92           1407         -      Not Applicable
  06/15/2026 04 PM PDT           10.93           1413         +      Not Applicable
  06/15/2026 05 PM PDT           10.92           1407         -      Not Applicable
  06/15/2026 06 PM PDT           10.93           1413         +      Not Applicable
  06/15/2026 07 PM PDT           10.93           1413         0      Not Applicable
  06/15/2026 08 PM PDT           10.92           1407         -      Not Applicable
  06/15/2026 09 PM PDT           10.91           1401         -      Not Applicable
  06/15/2026 10 PM PDT           10.93           1413         +      Not Applicable
  06/15/2026 11 PM PDT           10.95           1426         +      Not Applicable
  06/16/2026 12 AM PDT           10.94           1419         -      Not Applicable
  06/16/2026 01 AM PDT           10.95           1426         +      Not Applicable
  06/16/2026 02 AM PDT           10.93           1413         -      Not Applicable
  06/16/2026 03 AM PDT           10.89           1388         -      Not Applicable
  06/16/2026 04 AM PDT           10.88           1382         -      Not Applicable
  06/16/2026 05 AM PDT           10.87           1376         -      Not Applicable
  06/16/2026 06 AM PDT           10.88           1382         +      Not Applicable
  06/16/2026 07 AM PDT           10.86           1370         -      Not Applicable
  06/16/2026 08 AM PDT           10.86           1370         0      Not Applicable
  06/16/2026 09 AM PDT           10.85           1363         -      Not Applicable
  06/16/2026 10 AM PDT           10.82           1345         -      Not Applicable
  06/16/2026 11 AM PDT           10.83           1351         +      Not Applicable
  06/16/2026 12 PM PDT           10.82           1345         -      Not Applicable
  06/16/2026 01 PM PDT           10.80           1333         -      Not Applicable
  06/16/2026 02 PM PDT           10.79           1327         -      Not Applicable
  06/16/2026 03 PM PDT           10.79           1327         0      Not Applicable
  06/16/2026 04 PM PDT           10.78           1320         -      Not Applicable
  06/16/2026 05 PM PDT           10.77           1314         -      Not Applicable
  06/16/2026 06 PM PDT           10.77           1314         0      Not Applicable
  06/16/2026 07 PM PDT           10.75           1302         -      Not Applicable
  06/16/2026 08 PM PDT           10.73           1290         -      Not Applicable
  06/16/2026 09 PM PDT           10.72           1284         -      Not Applicable
  06/16/2026 10 PM PDT           10.71           1278         -      Not Applicable
  06/16/2026 11 PM PDT           10.72           1284         +      Not Applicable
  06/17/2026 12 AM PDT           10.72           1284         0      Not Applicable
  06/17/2026 01 AM PDT           10.69           1266         -      Not Applicable
  06/17/2026 02 AM PDT           10.65           1242         -      Not Applicable
  06/17/2026 03 AM PDT           10.66           1248         +      Not Applicable
  06/17/2026 04 AM PDT           10.66           1248         0      Not Applicable
  06/17/2026 05 AM PDT           10.65           1242         -      Not Applicable
  06/17/2026 06 AM PDT           10.67           1254         +      Not Applicable
  06/17/2026 07 AM PDT           10.66           1248         -      Not Applicable
  06/17/2026 08 AM PDT           10.61           1219         -      Not Applicable
  06/17/2026 09 AM PDT           10.60           1213         -      Not Applicable
  06/17/2026 10 AM PDT           10.59           1207         -      Not Applicable
  06/17/2026 11 AM PDT           10.60           1213         +      Not Applicable
  06/17/2026 12 PM PDT           10.60           1213         0      Not Applicable
  06/17/2026 01 PM PDT           10.56           1189         -      Not Applicable
  06/17/2026 02 PM PDT           10.56           1189         0      Not Applicable
  06/17/2026 03 PM PDT           10.57           1195         +      Not Applicable
  06/17/2026 04 PM PDT           10.55           1183         -      Not Applicable
  06/17/2026 05 PM PDT           10.52           1166         -      Not Applicable
  06/17/2026 06 PM PDT           10.52           1166         0      Not Applicable
  06/17/2026 07 PM PDT           10.48           1143         -      Not Applicable
  06/17/2026 08 PM PDT           10.48           1143         0      Not Applicable
  06/17/2026 09 PM PDT           10.47           1137         -      Not Applicable
  06/17/2026 10 PM PDT           10.48           1143         +      Not Applicable
  06/17/2026 11 PM PDT           10.47           1137         -      Not Applicable
  06/18/2026 12 AM PDT           10.47           1137         0      Not Applicable
  06/18/2026 01 AM PDT           10.46           1132         -      Not Applicable
  06/18/2026 02 AM PDT           10.43           1115         -      Not Applicable
  06/18/2026 03 AM PDT           10.42           1109         -      Not Applicable
  06/18/2026 04 AM PDT           10.38           1086         -      Not Applicable
  06/18/2026 05 AM PDT           10.39           1092         +      Not Applicable
  06/18/2026 06 AM PDT           10.37           1081         -      Not Applicable
  06/18/2026 07 AM PDT           10.40           1098         +      Not Applicable
  06/18/2026 08 AM PDT           10.38           1086         -      Not Applicable
  06/18/2026 09 AM PDT           10.39           1092         +      Not Applicable
  06/18/2026 10 AM PDT           10.38           1086         -      Not Applicable
  06/18/2026 11 AM PDT           10.33           1058         -      Not Applicable
  06/18/2026 12 PM PDT           10.30           1042         -      Not Applicable
  06/18/2026 01 PM PDT           10.31           1047         +      Not Applicable
  06/18/2026 02 PM PDT           10.30           1042         -      Not Applicable
  06/18/2026 03 PM PDT           10.29           1036         -      Not Applicable
  06/18/2026 04 PM PDT           10.28           1031         -      Not Applicable
  06/18/2026 05 PM PDT           10.27           1025         -      Not Applicable
  06/18/2026 06 PM PDT           10.27           1025         0      Not Applicable
  06/18/2026 07 PM PDT           10.25           1014         -      Not Applicable
  06/18/2026 08 PM PDT           10.25           1014         0      Not Applicable
  06/18/2026 09 PM PDT           10.26           1020         +      Not Applicable
  06/18/2026 10 PM PDT           10.23           1004         -      Not Applicable
  06/18/2026 11 PM PDT           10.23           1004         0      Not Applicable
  06/19/2026 12 AM PDT           10.23           1004         0      Not Applicable
  06/19/2026 01 AM PDT           10.23           1004         0      Not Applicable
  06/19/2026 02 AM PDT           10.23           1004         0      Not Applicable
  06/19/2026 03 AM PDT           10.24           1009         +      Not Applicable
  06/19/2026 04 AM PDT           10.24           1009         0      Not Applicable
  06/19/2026 05 AM PDT           10.24           1009         0      Not Applicable
  06/19/2026 06 AM PDT           10.24           1009         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  06/19/2026 07 AM PDT           10.23           1004                Not Applicable
  06/19/2026 08 AM PDT           10.21            993         -      Not Applicable
  06/19/2026 09 AM PDT           10.19            982         -      Not Applicable
  06/19/2026 10 AM PDT           10.17            971         -      Not Applicable
  06/19/2026 11 AM PDT           10.16            966         -      Not Applicable
  06/19/2026 12 PM PDT           10.15            961         -      Not Applicable
  06/19/2026 01 PM PDT           10.14            955         -      Not Applicable
  06/19/2026 02 PM PDT           10.14            955         0      Not Applicable
  06/19/2026 03 PM PDT           10.13            950         -      Not Applicable
  06/19/2026 04 PM PDT           10.13            950         0      Not Applicable
  06/19/2026 05 PM PDT           10.13            950         0      Not Applicable
  06/19/2026 06 PM PDT           10.13            950         0      Not Applicable
  06/19/2026 07 PM PDT           10.13            950         0      Not Applicable
  06/19/2026 08 PM PDT           10.13            950         0      Not Applicable
  06/19/2026 09 PM PDT           10.13            950         0      Not Applicable
  06/19/2026 10 PM PDT           10.13            950         0      Not Applicable
  06/19/2026 11 PM PDT           10.13            950         0      Not Applicable
  06/20/2026 12 AM PDT           10.13            950         0      Not Applicable
  06/20/2026 01 AM PDT           10.13            950         0      Not Applicable
  06/20/2026 02 AM PDT           10.13            950         0      Not Applicable
  06/20/2026 03 AM PDT           10.13            950         0      Not Applicable
  06/20/2026 04 AM PDT           10.13            950         0      Not Applicable
  06/20/2026 05 AM PDT           10.13            950         0      Not Applicable
  06/20/2026 06 AM PDT           10.13            950         0      Not Applicable
  06/20/2026 07 AM PDT           10.13            950         0      Not Applicable
  06/20/2026 08 AM PDT           10.13            950         0      Not Applicable
  06/20/2026 09 AM PDT           10.13            950         0      Not Applicable
  06/20/2026 10 AM PDT           10.13            950         0      Not Applicable
  06/20/2026 11 AM PDT           10.13            950         0      Not Applicable
  06/20/2026 12 PM PDT           10.13            950         0      Not Applicable
  06/20/2026 01 PM PDT           10.13            950         0      Not Applicable
  06/20/2026 02 PM PDT           10.13            950         0      Not Applicable
  06/20/2026 03 PM PDT           10.13            950         0      Not Applicable
  06/20/2026 04 PM PDT           10.13            950         0      Not Applicable
  06/20/2026 05 PM PDT           10.12            945         -      Not Applicable
  06/20/2026 06 PM PDT           10.12            945         0      Not Applicable
  06/20/2026 07 PM PDT           10.12            945         0      Not Applicable
  06/20/2026 08 PM PDT           10.12            945         0      Not Applicable
  06/20/2026 09 PM PDT           10.12            945         0      Not Applicable
  06/20/2026 10 PM PDT           10.12            945         0      Not Applicable
  06/20/2026 11 PM PDT           10.12            945         0      Not Applicable
  06/21/2026 12 AM PDT           10.12            945         0      Not Applicable
  06/21/2026 01 AM PDT           10.12            945         0      Not Applicable
  06/21/2026 02 AM PDT           10.12            945         0      Not Applicable
  06/21/2026 03 AM PDT           10.12            945         0      Not Applicable
  06/21/2026 04 AM PDT           10.12            945         0      Not Applicable
  06/21/2026 05 AM PDT           10.12            945         0      Not Applicable
  06/21/2026 06 AM PDT           10.12            945         0      Not Applicable
  06/21/2026 07 AM PDT           10.12            945         0      Not Applicable
  06/21/2026 08 AM PDT           10.12            945         0      Not Applicable
  06/21/2026 09 AM PDT           10.12            945         0      Not Applicable
  06/21/2026 10 AM PDT           10.12            945         0      Not Applicable
  06/21/2026 11 AM PDT           10.12            945         0      Not Applicable
  06/21/2026 12 PM PDT           10.12            945         0      Not Applicable
  06/21/2026 01 PM PDT           10.12            945         0      Not Applicable
  06/21/2026 02 PM PDT           10.12            945         0      Not Applicable
  06/21/2026 03 PM PDT           10.12            945         0      Not Applicable
  06/21/2026 04 PM PDT           10.12            945         0      Not Applicable
  06/21/2026 05 PM PDT           10.12            945         0      Not Applicable
  06/21/2026 06 PM PDT           10.12            945         0      Not Applicable
  06/21/2026 07 PM PDT           10.12            945         0      Not Applicable
  06/21/2026 08 PM PDT           10.12            945         0      Not Applicable
  06/21/2026 09 PM PDT           10.12            945         0      Not Applicable
  06/21/2026 10 PM PDT           10.12            945         0      Not Applicable
  06/21/2026 11 PM PDT           10.12            945         0      Not Applicable
  06/22/2026 12 AM PDT           10.12            945         0      Not Applicable
  06/22/2026 01 AM PDT           10.12            945         0      Not Applicable
  06/22/2026 02 AM PDT           10.12            945         0      Not Applicable
  06/22/2026 03 AM PDT           10.12            945         0      Not Applicable
  06/22/2026 04 AM PDT           10.12            945         0      Not Applicable
  06/22/2026 05 AM PDT           10.12            945         0      Not Applicable
  06/22/2026 06 AM PDT           10.12            945         0      Not Applicable
  06/22/2026 07 AM PDT           10.12            945         0      Not Applicable
  06/22/2026 08 AM PDT           10.12            945         0      Not Applicable
  06/22/2026 09 AM PDT           10.12            945         0      Not Applicable
  06/22/2026 10 AM PDT           10.12            945         0      Not Applicable
  06/22/2026 11 AM PDT           10.12            945         0      Not Applicable
  06/22/2026 12 PM PDT           10.12            945         0      Not Applicable
  06/22/2026 01 PM PDT           10.12            945         0      Not Applicable
  06/22/2026 02 PM PDT           10.12            945         0      Not Applicable
  06/22/2026 03 PM PDT           10.12            945         0      Not Applicable
  06/22/2026 04 PM PDT           10.12            945         0      Not Applicable
  06/22/2026 05 PM PDT           10.12            945         0      Not Applicable
  06/22/2026 06 PM PDT           10.12            945         0      Not Applicable
  06/22/2026 07 PM PDT           10.12            945         0      Not Applicable
  06/22/2026 08 PM PDT           10.12            945         0      Not Applicable
  06/22/2026 09 PM PDT           10.12            945         0      Not Applicable
  06/22/2026 10 PM PDT           10.12            945         0      Not Applicable
  06/22/2026 11 PM PDT           10.12            945         0      Not Applicable
  06/23/2026 12 AM PDT           10.12            945         0      Not Applicable
  06/23/2026 01 AM PDT           10.12            945         0      Not Applicable
  06/23/2026 02 AM PDT           10.12            945         0      Not Applicable
  06/23/2026 03 AM PDT           10.12            945         0      Not Applicable
  06/23/2026 04 AM PDT           10.12            945         0      Not Applicable
  06/23/2026 05 AM PDT           10.12            945         0      Not Applicable
  06/23/2026 06 AM PDT           10.12            945         0      Not Applicable
  06/23/2026 07 AM PDT           10.12            945         0      Not Applicable
  06/23/2026 08 AM PDT           10.12            945         0      Not Applicable
  06/23/2026 09 AM PDT           10.12            945         0      Not Applicable
  06/23/2026 10 AM PDT           10.12            945         0      Not Applicable
  06/23/2026 11 AM PDT           10.12            945         0      Not Applicable
  06/23/2026 12 PM PDT           10.12            945         0      Not Applicable
  06/23/2026 01 PM PDT           10.12            945         0      Not Applicable
  06/23/2026 02 PM PDT           10.12            945         0      Not Applicable
  06/23/2026 03 PM PDT           10.12            945         0      Not Applicable
  06/23/2026 04 PM PDT           10.12            945         0      Not Applicable
  06/23/2026 05 PM PDT           10.12            945         0      Not Applicable
  06/23/2026 06 PM PDT           10.12            945         0      Not Applicable
  06/23/2026 07 PM PDT           10.12            945         0      Not Applicable
  06/23/2026 08 PM PDT           10.12            945         0      Not Applicable
  06/23/2026 09 PM PDT           10.12            945         0      Not Applicable
  06/23/2026 10 PM PDT           10.12            945         0      Not Applicable
  06/23/2026 11 PM PDT           10.12            945         0      Not Applicable
  06/24/2026 12 AM PDT           10.12            945         0      Not Applicable
  06/24/2026 01 AM PDT           10.12            945         0      Not Applicable
  06/24/2026 02 AM PDT           10.12            945         0      Not Applicable
  06/24/2026 03 AM PDT           10.12            945         0      Not Applicable
  06/24/2026 04 AM PDT           10.12            945         0      Not Applicable
  06/24/2026 05 AM PDT           10.12            945         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.