SOUTH FORK TRINITY RIVER - HYAMPOM (HYMC1)
Latitude: 40.65º NLongitude: 123.49º WElevation: 1211 Feet
Location: Trinity County in CaliforniaBulletin Group: North CoastRiver Group: Klamath
Issuance Time: Jan 25 2026 at 7:19 AM PSTNext Issuance: Jan 26 2026 at 9:00 AM PST
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:  01/25/2026 at 07:22 AM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  01/20/2026 at 07:00 AM PST
# Maximum Observed Stage:                       5.56 Feet
# Maximum Observed Flow:                        1373 cfs
#
# Earliest Date & Time of Maximum Forecast:     01/25/2026 at 08:00 AM PST
# Maximum Forecast Stage:                       5.15 Feet
# Maximum Forecast Flow:                        1112 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  01/20/2026 07 AM PST            5.56           1373                Not Applicable
  01/20/2026 08 AM PST            5.55           1366         -      Not Applicable
  01/20/2026 09 AM PST            5.54           1359         -      Not Applicable
  01/20/2026 10 AM PST            5.52           1346         -      Not Applicable
  01/20/2026 11 AM PST            5.55           1366         +      Not Applicable
  01/20/2026 12 PM PST            5.55           1366         0      Not Applicable
  01/20/2026 01 PM PST            5.54           1359         -      Not Applicable
  01/20/2026 02 PM PST            5.54           1359         0      Not Applicable
  01/20/2026 03 PM PST            5.54           1359         0      Not Applicable
  01/20/2026 04 PM PST            5.51           1339         -      Not Applicable
  01/20/2026 05 PM PST            5.52           1346         +      Not Applicable
  01/20/2026 06 PM PST            5.52           1346         0      Not Applicable
  01/20/2026 07 PM PST            5.51           1339         -      Not Applicable
  01/20/2026 08 PM PST            5.52           1346         +      Not Applicable
  01/20/2026 09 PM PST            5.52           1346         0      Not Applicable
  01/20/2026 10 PM PST            5.49           1326         -      Not Applicable
  01/20/2026 11 PM PST            5.51           1339         +      Not Applicable
  01/21/2026 12 AM PST            5.49           1326         -      Not Applicable
  01/21/2026 01 AM PST            5.51           1339         +      Not Applicable
  01/21/2026 02 AM PST            5.50           1333         -      Not Applicable
  01/21/2026 03 AM PST            5.51           1339         +      Not Applicable
  01/21/2026 04 AM PST            5.50           1333         -      Not Applicable
  01/21/2026 05 AM PST            5.47           1313         -      Not Applicable
  01/21/2026 06 AM PST            5.46           1306         -      Not Applicable
  01/21/2026 07 AM PST            5.45           1300         -      Not Applicable
  01/21/2026 08 AM PST            5.45           1300         0      Not Applicable
  01/21/2026 09 AM PST            5.45           1300         0      Not Applicable
  01/21/2026 10 AM PST            5.45           1300         0      Not Applicable
  01/21/2026 11 AM PST            5.44           1293         -      Not Applicable
  01/21/2026 12 PM PST            5.43           1287         -      Not Applicable
  01/21/2026 01 PM PST            5.44           1293         +      Not Applicable
  01/21/2026 02 PM PST            5.44           1293         0      Not Applicable
  01/21/2026 03 PM PST            5.44           1293         0      Not Applicable
  01/21/2026 04 PM PST            5.43           1287         -      Not Applicable
  01/21/2026 05 PM PST            5.43           1287         0      Not Applicable
  01/21/2026 06 PM PST            5.42           1280         -      Not Applicable
  01/21/2026 07 PM PST            5.41           1274         -      Not Applicable
  01/21/2026 08 PM PST            5.42           1280         +      Not Applicable
  01/21/2026 09 PM PST            5.42           1280         0      Not Applicable
  01/21/2026 10 PM PST            5.42           1280         0      Not Applicable
  01/21/2026 11 PM PST            5.41           1274         -      Not Applicable
  01/22/2026 12 AM PST            5.41           1274         0      Not Applicable
  01/22/2026 01 AM PST            5.39           1261         -      Not Applicable
  01/22/2026 02 AM PST            5.41           1274         +      Not Applicable
  01/22/2026 03 AM PST            5.40           1267         -      Not Applicable
  01/22/2026 04 AM PST            5.39           1261         -      Not Applicable
  01/22/2026 05 AM PST            5.39           1261         0      Not Applicable
  01/22/2026 06 AM PST            5.36           1242         -      Not Applicable
  01/22/2026 07 AM PST            5.38           1254         +      Not Applicable
  01/22/2026 08 AM PST            5.39           1261         +      Not Applicable
  01/22/2026 09 AM PST            5.38           1254         -      Not Applicable
  01/22/2026 10 AM PST            5.38           1254         0      Not Applicable
  01/22/2026 11 AM PST            5.36           1242         -      Not Applicable
  01/22/2026 12 PM PST            5.37           1248         +      Not Applicable
  01/22/2026 01 PM PST            5.36           1242         -      Not Applicable
  01/22/2026 02 PM PST            5.37           1248         +      Not Applicable
  01/22/2026 03 PM PST            5.36           1242         -      Not Applicable
  01/22/2026 04 PM PST            5.36           1242         0      Not Applicable
  01/22/2026 05 PM PST            5.35           1235         -      Not Applicable
  01/22/2026 06 PM PST            5.35           1235         0      Not Applicable
  01/22/2026 07 PM PST            5.35           1235         0      Not Applicable
  01/22/2026 08 PM PST            5.34           1229         -      Not Applicable
  01/22/2026 09 PM PST            5.34           1229         0      Not Applicable
  01/22/2026 10 PM PST            5.32           1216         -      Not Applicable
  01/22/2026 11 PM PST            5.35           1235         +      Not Applicable
  01/23/2026 12 AM PST            5.34           1229         -      Not Applicable
  01/23/2026 01 AM PST            5.32           1216         -      Not Applicable
  01/23/2026 02 AM PST            5.33           1223         +      Not Applicable
  01/23/2026 03 AM PST            5.34           1229         +      Not Applicable
  01/23/2026 04 AM PST            5.32           1216         -      Not Applicable
  01/23/2026 05 AM PST            5.31           1210         -      Not Applicable
  01/23/2026 06 AM PST            5.31           1210         0      Not Applicable
  01/23/2026 07 AM PST            5.32           1216         +      Not Applicable
  01/23/2026 08 AM PST            5.31           1210         -      Not Applicable
  01/23/2026 09 AM PST            5.29           1198         -      Not Applicable
  01/23/2026 10 AM PST            5.28           1191         -      Not Applicable
  01/23/2026 11 AM PST            5.29           1198         +      Not Applicable
  01/23/2026 12 PM PST            5.31           1210         +      Not Applicable
  01/23/2026 01 PM PST            5.29           1198         -      Not Applicable
  01/23/2026 02 PM PST            5.30           1204         +      Not Applicable
  01/23/2026 03 PM PST            5.29           1198         -      Not Applicable
  01/23/2026 04 PM PST            5.27           1185         -      Not Applicable
  01/23/2026 05 PM PST            5.28           1191         +      Not Applicable
  01/23/2026 06 PM PST            5.26           1179         -      Not Applicable
  01/23/2026 07 PM PST            5.27           1185         +      Not Applicable
  01/23/2026 08 PM PST            5.28           1191         +      Not Applicable
  01/23/2026 09 PM PST            5.27           1185         -      Not Applicable
  01/23/2026 10 PM PST            5.27           1185         0      Not Applicable
  01/23/2026 11 PM PST            5.27           1185         0      Not Applicable
  01/24/2026 12 AM PST            5.25           1173         -      Not Applicable
  01/24/2026 01 AM PST            5.25           1173         0      Not Applicable
  01/24/2026 02 AM PST            5.25           1173         0      Not Applicable
  01/24/2026 03 AM PST            5.25           1173         0      Not Applicable
  01/24/2026 04 AM PST            5.25           1173         0      Not Applicable
  01/24/2026 05 AM PST            5.26           1179         +      Not Applicable
  01/24/2026 06 AM PST            5.26           1179         0      Not Applicable
  01/24/2026 07 AM PST            5.23           1160         -      Not Applicable
  01/24/2026 08 AM PST            5.23           1160         0      Not Applicable
  01/24/2026 09 AM PST            5.24           1167         +      Not Applicable
  01/24/2026 10 AM PST            5.23           1160         -      Not Applicable
  01/24/2026 11 AM PST            5.23           1160         0      Not Applicable
  01/24/2026 12 PM PST            5.23           1160         0      Not Applicable
  01/24/2026 01 PM PST            5.21           1148         -      Not Applicable
  01/24/2026 02 PM PST            5.22           1154         +      Not Applicable
  01/24/2026 03 PM PST            5.22           1154         0      Not Applicable
  01/24/2026 04 PM PST            5.21           1148         -      Not Applicable
  01/24/2026 05 PM PST            5.20           1142         -      Not Applicable
  01/24/2026 06 PM PST            5.20           1142         0      Not Applicable
  01/24/2026 07 PM PST            5.19           1136         -      Not Applicable
  01/24/2026 08 PM PST            5.20           1142         +      Not Applicable
  01/24/2026 09 PM PST            5.18           1130         -      Not Applicable
  01/24/2026 10 PM PST            5.19           1136         +      Not Applicable
  01/24/2026 11 PM PST            5.18           1130         -      Not Applicable
  01/25/2026 12 AM PST            5.18           1130         0      Not Applicable
  01/25/2026 01 AM PST            5.19           1136         +      Not Applicable
  01/25/2026 02 AM PST            5.18           1130         -      Not Applicable
  01/25/2026 03 AM PST            5.17           1124         -      Not Applicable
  01/25/2026 04 AM PST            5.15           1112         -      Not Applicable
  01/25/2026 05 AM PST            5.16           1118         +      Not Applicable
  01/25/2026 06 AM PST            5.16           1118         0      Not Applicable
  01/25/2026 07 AM PST            5.16           1118         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  01/25/2026 08 AM PST            5.15           1112                Not Applicable
  01/25/2026 09 AM PST            5.15           1112         0      Not Applicable
  01/25/2026 10 AM PST            5.15           1112         0      Not Applicable
  01/25/2026 11 AM PST            5.14           1106         -      Not Applicable
  01/25/2026 12 PM PST            5.14           1106         0      Not Applicable
  01/25/2026 01 PM PST            5.14           1106         0      Not Applicable
  01/25/2026 02 PM PST            5.14           1106         0      Not Applicable
  01/25/2026 03 PM PST            5.13           1100         -      Not Applicable
  01/25/2026 04 PM PST            5.13           1100         0      Not Applicable
  01/25/2026 05 PM PST            5.13           1100         0      Not Applicable
  01/25/2026 06 PM PST            5.13           1100         0      Not Applicable
  01/25/2026 07 PM PST            5.12           1094         -      Not Applicable
  01/25/2026 08 PM PST            5.12           1094         0      Not Applicable
  01/25/2026 09 PM PST            5.12           1094         0      Not Applicable
  01/25/2026 10 PM PST            5.12           1094         0      Not Applicable
  01/25/2026 11 PM PST            5.11           1088         -      Not Applicable
  01/26/2026 12 AM PST            5.11           1088         0      Not Applicable
  01/26/2026 01 AM PST            5.11           1088         0      Not Applicable
  01/26/2026 02 AM PST            5.11           1088         0      Not Applicable
  01/26/2026 03 AM PST            5.10           1082         -      Not Applicable
  01/26/2026 04 AM PST            5.10           1082         0      Not Applicable
  01/26/2026 05 AM PST            5.10           1082         0      Not Applicable
  01/26/2026 06 AM PST            5.10           1082         0      Not Applicable
  01/26/2026 07 AM PST            5.09           1076         -      Not Applicable
  01/26/2026 08 AM PST            5.09           1076         0      Not Applicable
  01/26/2026 09 AM PST            5.09           1076         0      Not Applicable
  01/26/2026 10 AM PST            5.09           1076         0      Not Applicable
  01/26/2026 11 AM PST            5.09           1076         0      Not Applicable
  01/26/2026 12 PM PST            5.08           1071         -      Not Applicable
  01/26/2026 01 PM PST            5.08           1071         0      Not Applicable
  01/26/2026 02 PM PST            5.08           1071         0      Not Applicable
  01/26/2026 03 PM PST            5.08           1071         0      Not Applicable
  01/26/2026 04 PM PST            5.08           1071         0      Not Applicable
  01/26/2026 05 PM PST            5.07           1065         -      Not Applicable
  01/26/2026 06 PM PST            5.07           1065         0      Not Applicable
  01/26/2026 07 PM PST            5.07           1065         0      Not Applicable
  01/26/2026 08 PM PST            5.06           1059         -      Not Applicable
  01/26/2026 09 PM PST            5.06           1059         0      Not Applicable
  01/26/2026 10 PM PST            5.06           1059         0      Not Applicable
  01/26/2026 11 PM PST            5.05           1053         -      Not Applicable
  01/27/2026 12 AM PST            5.05           1053         0      Not Applicable
  01/27/2026 01 AM PST            5.05           1053         0      Not Applicable
  01/27/2026 02 AM PST            5.04           1047         -      Not Applicable
  01/27/2026 03 AM PST            5.04           1047         0      Not Applicable
  01/27/2026 04 AM PST            5.04           1047         0      Not Applicable
  01/27/2026 05 AM PST            5.04           1047         0      Not Applicable
  01/27/2026 06 AM PST            5.03           1042         -      Not Applicable
  01/27/2026 07 AM PST            5.03           1042         0      Not Applicable
  01/27/2026 08 AM PST            5.03           1042         0      Not Applicable
  01/27/2026 09 AM PST            5.03           1042         0      Not Applicable
  01/27/2026 10 AM PST            5.02           1036         -      Not Applicable
  01/27/2026 11 AM PST            5.02           1036         0      Not Applicable
  01/27/2026 12 PM PST            5.02           1036         0      Not Applicable
  01/27/2026 01 PM PST            5.02           1036         0      Not Applicable
  01/27/2026 02 PM PST            5.01           1030         -      Not Applicable
  01/27/2026 03 PM PST            5.01           1030         0      Not Applicable
  01/27/2026 04 PM PST            5.01           1030         0      Not Applicable
  01/27/2026 05 PM PST            5.01           1030         0      Not Applicable
  01/27/2026 06 PM PST            5.00           1024         -      Not Applicable
  01/27/2026 07 PM PST            5.00           1024         0      Not Applicable
  01/27/2026 08 PM PST            5.00           1024         0      Not Applicable
  01/27/2026 09 PM PST            5.00           1024         0      Not Applicable
  01/27/2026 10 PM PST            4.99           1019         -      Not Applicable
  01/27/2026 11 PM PST            4.99           1019         0      Not Applicable
  01/28/2026 12 AM PST            4.99           1019         0      Not Applicable
  01/28/2026 01 AM PST            4.99           1019         0      Not Applicable
  01/28/2026 02 AM PST            4.99           1019         0      Not Applicable
  01/28/2026 03 AM PST            4.99           1019         0      Not Applicable
  01/28/2026 04 AM PST            4.99           1019         0      Not Applicable
  01/28/2026 05 AM PST            4.99           1019         0      Not Applicable
  01/28/2026 06 AM PST            4.99           1019         0      Not Applicable
  01/28/2026 07 AM PST            4.99           1019         0      Not Applicable
  01/28/2026 08 AM PST            5.00           1024         +      Not Applicable
  01/28/2026 09 AM PST            5.00           1024         0      Not Applicable
  01/28/2026 10 AM PST            5.00           1024         0      Not Applicable
  01/28/2026 11 AM PST            5.01           1030         +      Not Applicable
  01/28/2026 12 PM PST            5.02           1036         +      Not Applicable
  01/28/2026 01 PM PST            5.02           1036         0      Not Applicable
  01/28/2026 02 PM PST            5.03           1042         +      Not Applicable
  01/28/2026 03 PM PST            5.03           1042         0      Not Applicable
  01/28/2026 04 PM PST            5.04           1047         +      Not Applicable
  01/28/2026 05 PM PST            5.04           1047         0      Not Applicable
  01/28/2026 06 PM PST            5.05           1053         +      Not Applicable
  01/28/2026 07 PM PST            5.05           1053         0      Not Applicable
  01/28/2026 08 PM PST            5.05           1053         0      Not Applicable
  01/28/2026 09 PM PST            5.06           1059         +      Not Applicable
  01/28/2026 10 PM PST            5.06           1059         0      Not Applicable
  01/28/2026 11 PM PST            5.06           1059         0      Not Applicable
  01/29/2026 12 AM PST            5.06           1059         0      Not Applicable
  01/29/2026 01 AM PST            5.06           1059         0      Not Applicable
  01/29/2026 02 AM PST            5.07           1065         +      Not Applicable
  01/29/2026 03 AM PST            5.07           1065         0      Not Applicable
  01/29/2026 04 AM PST            5.07           1065         0      Not Applicable
  01/29/2026 05 AM PST            5.07           1065         0      Not Applicable
  01/29/2026 06 AM PST            5.07           1065         0      Not Applicable
  01/29/2026 07 AM PST            5.07           1065         0      Not Applicable
  01/29/2026 08 AM PST            5.06           1059         -      Not Applicable
  01/29/2026 09 AM PST            5.06           1059         0      Not Applicable
  01/29/2026 10 AM PST            5.06           1059         0      Not Applicable
  01/29/2026 11 AM PST            5.06           1059         0      Not Applicable
  01/29/2026 12 PM PST            5.06           1059         0      Not Applicable
  01/29/2026 01 PM PST            5.06           1059         0      Not Applicable
  01/29/2026 02 PM PST            5.06           1059         0      Not Applicable
  01/29/2026 03 PM PST            5.05           1053         -      Not Applicable
  01/29/2026 04 PM PST            5.05           1053         0      Not Applicable
  01/29/2026 05 PM PST            5.05           1053         0      Not Applicable
  01/29/2026 06 PM PST            5.05           1053         0      Not Applicable
  01/29/2026 07 PM PST            5.04           1047         -      Not Applicable
  01/29/2026 08 PM PST            5.04           1047         0      Not Applicable
  01/29/2026 09 PM PST            5.04           1047         0      Not Applicable
  01/29/2026 10 PM PST            5.04           1047         0      Not Applicable
  01/29/2026 11 PM PST            5.04           1047         0      Not Applicable
  01/30/2026 12 AM PST            5.04           1047         0      Not Applicable
  01/30/2026 01 AM PST            5.03           1042         -      Not Applicable
  01/30/2026 02 AM PST            5.03           1042         0      Not Applicable
  01/30/2026 03 AM PST            5.03           1042         0      Not Applicable
  01/30/2026 04 AM PST            5.03           1042         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.