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

 | 

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: Apr 30 2025 at 8:07 AM PDTNext Issuance: May 01 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: South Fork Trinity River - Hyampom (HYMC1)
#
# File Generation Time:  04/30/2025 at 08:09 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/25/2025 at 09:00 AM PDT
# Maximum Observed Stage:                       5.82 Feet
# Maximum Observed Flow:                        1573 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/30/2025 at 08:00 AM PDT
# Maximum Forecast Stage:                       5.33 Feet
# Maximum Forecast Flow:                        1223 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/25/2025 08 AM PDT            5.80           1558                Not Applicable
  04/25/2025 09 AM PDT            5.82           1573         +      Not Applicable
  04/25/2025 10 AM PDT            5.80           1558         -      Not Applicable
  04/25/2025 11 AM PDT            5.80           1558         0      Not Applicable
  04/25/2025 12 PM PDT            5.80           1558         0      Not Applicable
  04/25/2025 01 PM PDT            5.81           1565         +      Not Applicable
  04/25/2025 02 PM PDT            5.79           1550         -      Not Applicable
  04/25/2025 03 PM PDT            5.77           1534         -      Not Applicable
  04/25/2025 04 PM PDT            5.78           1542         +      Not Applicable
  04/25/2025 05 PM PDT            5.77           1534         -      Not Applicable
  04/25/2025 06 PM PDT            5.78           1542         +      Not Applicable
  04/25/2025 07 PM PDT            5.76           1526         -      Not Applicable
  04/25/2025 08 PM PDT            5.76           1526         0      Not Applicable
  04/25/2025 09 PM PDT            5.76           1526         0      Not Applicable
  04/25/2025 10 PM PDT            5.73           1503         -      Not Applicable
  04/25/2025 11 PM PDT            5.72           1496         -      Not Applicable
  04/26/2025 12 AM PDT            5.72           1496         0      Not Applicable
  04/26/2025 01 AM PDT            5.71           1488         -      Not Applicable
  04/26/2025 02 AM PDT            5.72           1496         +      Not Applicable
  04/26/2025 03 AM PDT            5.70           1480         -      Not Applicable
  04/26/2025 04 AM PDT            5.70           1480         0      Not Applicable
  04/26/2025 05 AM PDT            5.72           1496         +      Not Applicable
  04/26/2025 06 AM PDT            5.72           1496         0      Not Applicable
  04/26/2025 07 AM PDT            5.70           1480         -      Not Applicable
  04/26/2025 08 AM PDT            5.72           1496         +      Not Applicable
  04/26/2025 09 AM PDT            5.71           1488         -      Not Applicable
  04/26/2025 10 AM PDT            5.72           1496         +      Not Applicable
  04/26/2025 11 AM PDT            5.68           1465         -      Not Applicable
  04/26/2025 12 PM PDT            5.71           1488         +      Not Applicable
  04/26/2025 01 PM PDT            5.70           1480         -      Not Applicable
  04/26/2025 02 PM PDT            5.69           1473         -      Not Applicable
  04/26/2025 03 PM PDT            5.69           1473         0      Not Applicable
  04/26/2025 04 PM PDT            5.69           1473         0      Not Applicable
  04/26/2025 05 PM PDT            5.68           1465         -      Not Applicable
  04/26/2025 06 PM PDT            5.69           1473         +      Not Applicable
  04/26/2025 07 PM PDT            5.68           1465         -      Not Applicable
  04/26/2025 08 PM PDT            5.69           1473         +      Not Applicable
  04/26/2025 09 PM PDT            5.69           1473         0      Not Applicable
  04/26/2025 10 PM PDT            5.68           1465         -      Not Applicable
  04/26/2025 11 PM PDT            5.70           1480         +      Not Applicable
  04/27/2025 12 AM PDT            5.68           1465         -      Not Applicable
  04/27/2025 01 AM PDT            5.67           1458         -      Not Applicable
  04/27/2025 02 AM PDT            5.69           1473         +      Not Applicable
  04/27/2025 03 AM PDT            5.68           1465         -      Not Applicable
  04/27/2025 04 AM PDT            5.66           1450         -      Not Applicable
  04/27/2025 05 AM PDT            5.65           1443         -      Not Applicable
  04/27/2025 06 AM PDT            5.67           1458         +      Not Applicable
  04/27/2025 07 AM PDT            5.64           1435         -      Not Applicable
  04/27/2025 08 AM PDT            5.66           1450         +      Not Applicable
  04/27/2025 09 AM PDT            5.63           1428         -      Not Applicable
  04/27/2025 10 AM PDT            5.65           1443         +      Not Applicable
  04/27/2025 11 AM PDT            5.64           1435         -      Not Applicable
  04/27/2025 12 PM PDT            5.63           1428         -      Not Applicable
  04/27/2025 01 PM PDT            5.65           1443         +      Not Applicable
  04/27/2025 02 PM PDT            5.64           1435         -      Not Applicable
  04/27/2025 03 PM PDT            5.62           1420         -      Not Applicable
  04/27/2025 04 PM PDT            5.62           1420         0      Not Applicable
  04/27/2025 05 PM PDT            5.60           1405         -      Not Applicable
  04/27/2025 06 PM PDT            5.59           1398         -      Not Applicable
  04/27/2025 07 PM PDT            5.60           1405         +      Not Applicable
  04/27/2025 08 PM PDT            5.58           1391         -      Not Applicable
  04/27/2025 09 PM PDT            5.58           1391         0      Not Applicable
  04/27/2025 10 PM PDT            5.57           1383         -      Not Applicable
  04/27/2025 11 PM PDT            5.55           1369         -      Not Applicable
  04/28/2025 12 AM PDT            5.54           1362         -      Not Applicable
  04/28/2025 01 AM PDT            5.54           1362         0      Not Applicable
  04/28/2025 02 AM PDT            5.54           1362         0      Not Applicable
  04/28/2025 03 AM PDT            5.52           1347         -      Not Applicable
  04/28/2025 04 AM PDT            5.54           1362         +      Not Applicable
  04/28/2025 05 AM PDT            5.53           1354         -      Not Applicable
  04/28/2025 06 AM PDT            5.51           1340         -      Not Applicable
  04/28/2025 07 AM PDT            5.52           1347         +      Not Applicable
  04/28/2025 08 AM PDT            5.51           1340         -      Not Applicable
  04/28/2025 09 AM PDT            5.51           1340         0      Not Applicable
  04/28/2025 10 AM PDT            5.49           1326         -      Not Applicable
  04/28/2025 11 AM PDT            5.50           1333         +      Not Applicable
  04/28/2025 12 PM PDT            5.50           1333         0      Not Applicable
  04/28/2025 01 PM PDT            5.50           1333         0      Not Applicable
  04/28/2025 02 PM PDT            5.50           1333         0      Not Applicable
  04/28/2025 03 PM PDT            5.49           1326         -      Not Applicable
  04/28/2025 04 PM PDT            5.49           1326         0      Not Applicable
  04/28/2025 05 PM PDT            5.49           1326         0      Not Applicable
  04/28/2025 06 PM PDT            5.48           1319         -      Not Applicable
  04/28/2025 07 PM PDT            5.48           1319         0      Not Applicable
  04/28/2025 08 PM PDT            5.47           1313         -      Not Applicable
  04/28/2025 09 PM PDT            5.45           1300         -      Not Applicable
  04/28/2025 10 PM PDT            5.45           1300         0      Not Applicable
  04/28/2025 11 PM PDT            5.43           1287         -      Not Applicable
  04/29/2025 12 AM PDT            5.44           1293         +      Not Applicable
  04/29/2025 01 AM PDT            5.44           1293         0      Not Applicable
  04/29/2025 02 AM PDT            5.42           1280         -      Not Applicable
  04/29/2025 03 AM PDT            5.42           1280         0      Not Applicable
  04/29/2025 04 AM PDT            5.44           1293         +      Not Applicable
  04/29/2025 05 AM PDT            5.41           1274         -      Not Applicable
  04/29/2025 06 AM PDT            5.45           1300         +      Not Applicable
  04/29/2025 07 AM PDT            5.42           1280         -      Not Applicable
  04/29/2025 08 AM PDT            5.40           1267         -      Not Applicable
  04/29/2025 09 AM PDT            5.41           1274         +      Not Applicable
  04/29/2025 10 AM PDT            5.40           1267         -      Not Applicable
  04/29/2025 11 AM PDT            5.40           1267         0      Not Applicable
  04/29/2025 12 PM PDT            5.37           1248         -      Not Applicable
  04/29/2025 01 PM PDT            5.40           1267         +      Not Applicable
  04/29/2025 02 PM PDT            5.38           1254         -      Not Applicable
  04/29/2025 03 PM PDT            5.40           1267         +      Not Applicable
  04/29/2025 04 PM PDT            5.39           1261         -      Not Applicable
  04/29/2025 05 PM PDT            5.38           1254         -      Not Applicable
  04/29/2025 06 PM PDT            5.36           1242         -      Not Applicable
  04/29/2025 07 PM PDT            5.37           1248         +      Not Applicable
  04/29/2025 08 PM PDT            5.38           1254         +      Not Applicable
  04/29/2025 09 PM PDT            5.36           1242         -      Not Applicable
  04/29/2025 10 PM PDT            5.36           1242         0      Not Applicable
  04/29/2025 11 PM PDT            5.36           1242         0      Not Applicable
  04/30/2025 12 AM PDT            5.35           1235         -      Not Applicable
  04/30/2025 01 AM PDT            5.34           1229         -      Not Applicable
  04/30/2025 02 AM PDT            5.35           1235         +      Not Applicable
  04/30/2025 03 AM PDT            5.35           1235         0      Not Applicable
  04/30/2025 04 AM PDT            5.33           1223         -      Not Applicable
  04/30/2025 05 AM PDT            5.34           1229         +      Not Applicable
  04/30/2025 06 AM PDT            5.34           1229         0      Not Applicable
  04/30/2025 07 AM PDT            5.34           1229         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/30/2025 08 AM PDT            5.33           1223                Not Applicable
  04/30/2025 09 AM PDT            5.33           1223         0      Not Applicable
  04/30/2025 10 AM PDT            5.33           1223         0      Not Applicable
  04/30/2025 11 AM PDT            5.33           1223         0      Not Applicable
  04/30/2025 12 PM PDT            5.33           1223         0      Not Applicable
  04/30/2025 01 PM PDT            5.32           1216         -      Not Applicable
  04/30/2025 02 PM PDT            5.32           1216         0      Not Applicable
  04/30/2025 03 PM PDT            5.32           1216         0      Not Applicable
  04/30/2025 04 PM PDT            5.32           1216         0      Not Applicable
  04/30/2025 05 PM PDT            5.31           1210         -      Not Applicable
  04/30/2025 06 PM PDT            5.31           1210         0      Not Applicable
  04/30/2025 07 PM PDT            5.31           1210         0      Not Applicable
  04/30/2025 08 PM PDT            5.31           1210         0      Not Applicable
  04/30/2025 09 PM PDT            5.30           1204         -      Not Applicable
  04/30/2025 10 PM PDT            5.30           1204         0      Not Applicable
  04/30/2025 11 PM PDT            5.30           1204         0      Not Applicable
  05/01/2025 12 AM PDT            5.30           1204         0      Not Applicable
  05/01/2025 01 AM PDT            5.29           1198         -      Not Applicable
  05/01/2025 02 AM PDT            5.29           1198         0      Not Applicable
  05/01/2025 03 AM PDT            5.29           1198         0      Not Applicable
  05/01/2025 04 AM PDT            5.29           1198         0      Not Applicable
  05/01/2025 05 AM PDT            5.29           1198         0      Not Applicable
  05/01/2025 06 AM PDT            5.28           1191         -      Not Applicable
  05/01/2025 07 AM PDT            5.28           1191         0      Not Applicable
  05/01/2025 08 AM PDT            5.28           1191         0      Not Applicable
  05/01/2025 09 AM PDT            5.28           1191         0      Not Applicable
  05/01/2025 10 AM PDT            5.28           1191         0      Not Applicable
  05/01/2025 11 AM PDT            5.27           1185         -      Not Applicable
  05/01/2025 12 PM PDT            5.27           1185         0      Not Applicable
  05/01/2025 01 PM PDT            5.27           1185         0      Not Applicable
  05/01/2025 02 PM PDT            5.27           1185         0      Not Applicable
  05/01/2025 03 PM PDT            5.26           1179         -      Not Applicable
  05/01/2025 04 PM PDT            5.26           1179         0      Not Applicable
  05/01/2025 05 PM PDT            5.26           1179         0      Not Applicable
  05/01/2025 06 PM PDT            5.26           1179         0      Not Applicable
  05/01/2025 07 PM PDT            5.26           1179         0      Not Applicable
  05/01/2025 08 PM PDT            5.25           1173         -      Not Applicable
  05/01/2025 09 PM PDT            5.25           1173         0      Not Applicable
  05/01/2025 10 PM PDT            5.25           1173         0      Not Applicable
  05/01/2025 11 PM PDT            5.25           1173         0      Not Applicable
  05/02/2025 12 AM PDT            5.25           1173         0      Not Applicable
  05/02/2025 01 AM PDT            5.24           1167         -      Not Applicable
  05/02/2025 02 AM PDT            5.24           1167         0      Not Applicable
  05/02/2025 03 AM PDT            5.24           1167         0      Not Applicable
  05/02/2025 04 AM PDT            5.24           1167         0      Not Applicable
  05/02/2025 05 AM PDT            5.23           1160         -      Not Applicable
  05/02/2025 06 AM PDT            5.23           1160         0      Not Applicable
  05/02/2025 07 AM PDT            5.23           1160         0      Not Applicable
  05/02/2025 08 AM PDT            5.23           1160         0      Not Applicable
  05/02/2025 09 AM PDT            5.22           1154         -      Not Applicable
  05/02/2025 10 AM PDT            5.22           1154         0      Not Applicable
  05/02/2025 11 AM PDT            5.22           1154         0      Not Applicable
  05/02/2025 12 PM PDT            5.22           1154         0      Not Applicable
  05/02/2025 01 PM PDT            5.22           1154         0      Not Applicable
  05/02/2025 02 PM PDT            5.21           1148         -      Not Applicable
  05/02/2025 03 PM PDT            5.21           1148         0      Not Applicable
  05/02/2025 04 PM PDT            5.21           1148         0      Not Applicable
  05/02/2025 05 PM PDT            5.21           1148         0      Not Applicable
  05/02/2025 06 PM PDT            5.21           1148         0      Not Applicable
  05/02/2025 07 PM PDT            5.20           1142         -      Not Applicable
  05/02/2025 08 PM PDT            5.20           1142         0      Not Applicable
  05/02/2025 09 PM PDT            5.20           1142         0      Not Applicable
  05/02/2025 10 PM PDT            5.20           1142         0      Not Applicable
  05/02/2025 11 PM PDT            5.20           1142         0      Not Applicable
  05/03/2025 12 AM PDT            5.19           1136         -      Not Applicable
  05/03/2025 01 AM PDT            5.19           1136         0      Not Applicable
  05/03/2025 02 AM PDT            5.19           1136         0      Not Applicable
  05/03/2025 03 AM PDT            5.19           1136         0      Not Applicable
  05/03/2025 04 AM PDT            5.18           1130         -      Not Applicable
  05/03/2025 05 AM PDT            5.18           1130         0      Not Applicable
  05/03/2025 06 AM PDT            5.18           1130         0      Not Applicable
  05/03/2025 07 AM PDT            5.18           1130         0      Not Applicable
  05/03/2025 08 AM PDT            5.18           1130         0      Not Applicable
  05/03/2025 09 AM PDT            5.17           1124         -      Not Applicable
  05/03/2025 10 AM PDT            5.17           1124         0      Not Applicable
  05/03/2025 11 AM PDT            5.17           1124         0      Not Applicable
  05/03/2025 12 PM PDT            5.17           1124         0      Not Applicable
  05/03/2025 01 PM PDT            5.17           1124         0      Not Applicable
  05/03/2025 02 PM PDT            5.17           1124         0      Not Applicable
  05/03/2025 03 PM PDT            5.17           1124         0      Not Applicable
  05/03/2025 04 PM PDT            5.17           1124         0      Not Applicable
  05/03/2025 05 PM PDT            5.17           1124         0      Not Applicable
  05/03/2025 06 PM PDT            5.16           1118         -      Not Applicable
  05/03/2025 07 PM PDT            5.16           1118         0      Not Applicable
  05/03/2025 08 PM PDT            5.16           1118         0      Not Applicable
  05/03/2025 09 PM PDT            5.16           1118         0      Not Applicable
  05/03/2025 10 PM PDT            5.16           1118         0      Not Applicable
  05/03/2025 11 PM PDT            5.15           1112         -      Not Applicable
  05/04/2025 12 AM PDT            5.15           1112         0      Not Applicable
  05/04/2025 01 AM PDT            5.15           1112         0      Not Applicable
  05/04/2025 02 AM PDT            5.15           1112         0      Not Applicable
  05/04/2025 03 AM PDT            5.14           1106         -      Not Applicable
  05/04/2025 04 AM PDT            5.14           1106         0      Not Applicable
  05/04/2025 05 AM PDT            5.14           1106         0      Not Applicable
  05/04/2025 06 AM PDT            5.14           1106         0      Not Applicable
  05/04/2025 07 AM PDT            5.13           1100         -      Not Applicable
  05/04/2025 08 AM PDT            5.13           1100         0      Not Applicable
  05/04/2025 09 AM PDT            5.13           1100         0      Not Applicable
  05/04/2025 10 AM PDT            5.13           1100         0      Not Applicable
  05/04/2025 11 AM PDT            5.12           1094         -      Not Applicable
  05/04/2025 12 PM PDT            5.12           1094         0      Not Applicable
  05/04/2025 01 PM PDT            5.12           1094         0      Not Applicable
  05/04/2025 02 PM PDT            5.12           1094         0      Not Applicable
  05/04/2025 03 PM PDT            5.11           1088         -      Not Applicable
  05/04/2025 04 PM PDT            5.11           1088         0      Not Applicable
  05/04/2025 05 PM PDT            5.11           1088         0      Not Applicable
  05/04/2025 06 PM PDT            5.11           1088         0      Not Applicable
  05/04/2025 07 PM PDT            5.10           1082         -      Not Applicable
  05/04/2025 08 PM PDT            5.10           1082         0      Not Applicable
  05/04/2025 09 PM PDT            5.10           1082         0      Not Applicable
  05/04/2025 10 PM PDT            5.10           1082         0      Not Applicable
  05/04/2025 11 PM PDT            5.09           1076         -      Not Applicable
  05/05/2025 12 AM PDT            5.09           1076         0      Not Applicable
  05/05/2025 01 AM PDT            5.09           1076         0      Not Applicable
  05/05/2025 02 AM PDT            5.09           1076         0      Not Applicable
  05/05/2025 03 AM PDT            5.09           1076         0      Not Applicable
  05/05/2025 04 AM PDT            5.08           1071         -      Not Applicable
  05/05/2025 05 AM PDT            5.08           1071         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.