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KLAMATH RIVER - IRON GATE (IRGC1)
| Latitude: 41.93º N | Longitude: 122.44º W | Elevation: 2162 Feet | | Forecast Type: Unofficial Location |
| Location: Siskiyou County in California | Bulletin Group: North Coast | River Group: Klamath |
| Issuance Time: | Sep 02 2026 at 7:21 AM PDT | Next Issuance: | Sep 03 2026 at 9:00 AM PDT
| |
| Action: N/A | Minor Flood: N/A | Moderate Flood: N/A | Major Flood: N/A |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Klamath River - Iron Gate (IRGC1)
#
# File Generation Time: 09/02/2026 at 07:23 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 08/28/2026 at 10:00 PM PDT
# Maximum Observed Stage: 3.44 Feet
# Maximum Observed Flow: 2091 cfs
#
# Earliest Date & Time of Maximum Forecast: 09/03/2026 at 05:00 AM PDT
# Maximum Forecast Stage: 2.24 Feet
# Maximum Forecast Flow: 1190 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
08/28/2026 07 AM PDT 1.77 917 Not Applicable
08/28/2026 08 AM PDT 1.77 917 0 Not Applicable
08/28/2026 09 AM PDT 1.76 911 - Not Applicable
08/28/2026 10 AM PDT 1.77 917 + Not Applicable
08/28/2026 11 AM PDT 1.77 917 0 Not Applicable
08/28/2026 12 PM PDT 1.77 917 0 Not Applicable
08/28/2026 01 PM PDT 1.78 922 + Not Applicable
08/28/2026 02 PM PDT 1.77 917 - Not Applicable
08/28/2026 03 PM PDT 2.85 1616 + Not Applicable
08/28/2026 04 PM PDT 3.35 2015 + Not Applicable
08/28/2026 05 PM PDT 3.32 1990 - Not Applicable
08/28/2026 06 PM PDT 3.35 2015 + Not Applicable
08/28/2026 07 PM PDT 3.40 2057 + Not Applicable
08/28/2026 08 PM PDT 3.42 2074 + Not Applicable
08/28/2026 09 PM PDT 3.43 2083 + Not Applicable
08/28/2026 10 PM PDT 3.44 2091 + Not Applicable
08/28/2026 11 PM PDT 3.42 2074 - Not Applicable
08/29/2026 12 AM PDT 3.43 2083 + Not Applicable
08/29/2026 01 AM PDT 3.41 2066 - Not Applicable
08/29/2026 02 AM PDT 3.42 2074 + Not Applicable
08/29/2026 03 AM PDT 3.40 2057 - Not Applicable
08/29/2026 04 AM PDT 3.27 1948 - Not Applicable
08/29/2026 05 AM PDT 3.25 1932 - Not Applicable
08/29/2026 06 AM PDT 3.32 1990 + Not Applicable
08/29/2026 07 AM PDT 3.34 2006 + Not Applicable
08/29/2026 08 AM PDT 3.34 2006 0 Not Applicable
08/29/2026 09 AM PDT 3.34 2006 0 Not Applicable
08/29/2026 10 AM PDT 3.34 2006 0 Not Applicable
08/29/2026 11 AM PDT 3.34 2006 0 Not Applicable
08/29/2026 12 PM PDT 3.32 1990 - Not Applicable
08/29/2026 01 PM PDT 3.32 1990 0 Not Applicable
08/29/2026 02 PM PDT 3.32 1990 0 Not Applicable
08/29/2026 03 PM PDT 3.31 1981 - Not Applicable
08/29/2026 04 PM PDT 3.28 1956 - Not Applicable
08/29/2026 05 PM PDT 3.23 1915 - Not Applicable
08/29/2026 06 PM PDT 3.22 1907 - Not Applicable
08/29/2026 07 PM PDT 3.21 1899 - Not Applicable
08/29/2026 08 PM PDT 3.22 1907 + Not Applicable
08/29/2026 09 PM PDT 3.22 1907 0 Not Applicable
08/29/2026 10 PM PDT 3.16 1858 - Not Applicable
08/29/2026 11 PM PDT 3.07 1786 - Not Applicable
08/30/2026 12 AM PDT 3.03 1755 - Not Applicable
08/30/2026 01 AM PDT 3.02 1747 - Not Applicable
08/30/2026 02 AM PDT 3.02 1747 0 Not Applicable
08/30/2026 03 AM PDT 3.01 1739 - Not Applicable
08/30/2026 04 AM PDT 3.00 1731 - Not Applicable
08/30/2026 05 AM PDT 2.97 1708 - Not Applicable
08/30/2026 06 AM PDT 2.96 1700 - Not Applicable
08/30/2026 07 AM PDT 2.96 1700 0 Not Applicable
08/30/2026 08 AM PDT 2.96 1700 0 Not Applicable
08/30/2026 09 AM PDT 2.95 1692 - Not Applicable
08/30/2026 10 AM PDT 2.94 1685 - Not Applicable
08/30/2026 11 AM PDT 2.90 1654 - Not Applicable
08/30/2026 12 PM PDT 2.89 1646 - Not Applicable
08/30/2026 01 PM PDT 2.88 1639 - Not Applicable
08/30/2026 02 PM PDT 2.87 1631 - Not Applicable
08/30/2026 03 PM PDT 2.87 1631 0 Not Applicable
08/30/2026 04 PM PDT 2.85 1616 - Not Applicable
08/30/2026 05 PM PDT 2.81 1586 - Not Applicable
08/30/2026 06 PM PDT 2.78 1564 - Not Applicable
08/30/2026 07 PM PDT 2.78 1564 0 Not Applicable
08/30/2026 08 PM PDT 2.78 1564 0 Not Applicable
08/30/2026 09 PM PDT 2.79 1571 + Not Applicable
08/30/2026 10 PM PDT 2.77 1556 - Not Applicable
08/30/2026 11 PM PDT 2.74 1534 - Not Applicable
08/31/2026 12 AM PDT 2.72 1520 - Not Applicable
08/31/2026 01 AM PDT 2.70 1505 - Not Applicable
08/31/2026 02 AM PDT 2.67 1483 - Not Applicable
08/31/2026 03 AM PDT 2.62 1448 - Not Applicable
08/31/2026 04 AM PDT 2.60 1433 - Not Applicable
08/31/2026 05 AM PDT 2.60 1433 0 Not Applicable
08/31/2026 06 AM PDT 2.60 1433 0 Not Applicable
08/31/2026 07 AM PDT 2.59 1426 - Not Applicable
08/31/2026 08 AM PDT 2.59 1426 0 Not Applicable
08/31/2026 09 AM PDT 2.57 1412 - Not Applicable
08/31/2026 10 AM PDT 2.58 1419 + Not Applicable
08/31/2026 11 AM PDT 2.58 1419 0 Not Applicable
08/31/2026 12 PM PDT 2.59 1426 + Not Applicable
08/31/2026 01 PM PDT 2.58 1419 - Not Applicable
08/31/2026 02 PM PDT 2.59 1426 + Not Applicable
08/31/2026 03 PM PDT 2.58 1419 - Not Applicable
08/31/2026 04 PM PDT 2.59 1426 + Not Applicable
08/31/2026 05 PM PDT 2.59 1426 0 Not Applicable
08/31/2026 06 PM PDT 2.57 1412 - Not Applicable
08/31/2026 07 PM PDT 2.55 1398 - Not Applicable
08/31/2026 08 PM PDT 2.55 1398 0 Not Applicable
08/31/2026 09 PM PDT 2.55 1398 0 Not Applicable
08/31/2026 10 PM PDT 2.56 1405 + Not Applicable
08/31/2026 11 PM PDT 2.56 1405 0 Not Applicable
09/01/2026 12 AM PDT 2.54 1391 - Not Applicable
09/01/2026 01 AM PDT 2.51 1370 - Not Applicable
09/01/2026 02 AM PDT 2.46 1336 - Not Applicable
09/01/2026 03 AM PDT 2.42 1309 - Not Applicable
09/01/2026 04 AM PDT 2.39 1288 - Not Applicable
09/01/2026 05 AM PDT 2.37 1275 - Not Applicable
09/01/2026 06 AM PDT 2.36 1268 - Not Applicable
09/01/2026 07 AM PDT 2.35 1262 - Not Applicable
09/01/2026 08 AM PDT 2.36 1268 + Not Applicable
09/01/2026 09 AM PDT 2.36 1268 0 Not Applicable
09/01/2026 10 AM PDT 2.36 1268 0 Not Applicable
09/01/2026 11 AM PDT 2.36 1268 0 Not Applicable
09/01/2026 12 PM PDT 2.35 1262 - Not Applicable
09/01/2026 01 PM PDT 2.34 1255 - Not Applicable
09/01/2026 02 PM PDT 2.33 1248 - Not Applicable
09/01/2026 03 PM PDT 2.34 1255 + Not Applicable
09/01/2026 04 PM PDT 2.34 1255 0 Not Applicable
09/01/2026 05 PM PDT 2.35 1262 + Not Applicable
09/01/2026 06 PM PDT 2.34 1255 - Not Applicable
09/01/2026 07 PM PDT 2.34 1255 0 Not Applicable
09/01/2026 08 PM PDT 2.33 1248 - Not Applicable
09/01/2026 09 PM PDT 2.33 1248 0 Not Applicable
09/01/2026 10 PM PDT 2.35 1262 + Not Applicable
09/01/2026 11 PM PDT 2.34 1255 - Not Applicable
09/02/2026 12 AM PDT 2.30 1229 - Not Applicable
09/02/2026 01 AM PDT 2.27 1209 - Not Applicable
09/02/2026 02 AM PDT 2.22 1177 - Not Applicable
09/02/2026 03 AM PDT 2.21 1170 - Not Applicable
09/02/2026 04 AM PDT 2.18 1151 - Not Applicable
09/02/2026 05 AM PDT 2.13 1120 - Not Applicable
09/02/2026 06 AM PDT 2.12 1113 - Not Applicable
09/02/2026 07 AM PDT 2.11 1107 - Not Applicable
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
09/02/2026 08 AM PDT 2.11 1107 Not Applicable
09/02/2026 09 AM PDT 2.10 1101 - Not Applicable
09/02/2026 10 AM PDT 2.09 1095 - Not Applicable
09/02/2026 11 AM PDT 2.09 1095 0 Not Applicable
09/02/2026 12 PM PDT 2.08 1089 - Not Applicable
09/02/2026 01 PM PDT 2.07 1083 - Not Applicable
09/02/2026 02 PM PDT 2.06 1078 - Not Applicable
09/02/2026 03 PM PDT 2.06 1078 0 Not Applicable
09/02/2026 04 PM PDT 2.06 1078 0 Not Applicable
09/02/2026 05 PM PDT 2.06 1078 0 Not Applicable
09/02/2026 06 PM PDT 2.07 1083 + Not Applicable
09/02/2026 07 PM PDT 2.08 1089 + Not Applicable
09/02/2026 08 PM PDT 2.09 1095 + Not Applicable
09/02/2026 09 PM PDT 2.10 1101 + Not Applicable
09/02/2026 10 PM PDT 2.11 1107 + Not Applicable
09/02/2026 11 PM PDT 2.13 1120 + Not Applicable
09/03/2026 12 AM PDT 2.16 1138 + Not Applicable
09/03/2026 01 AM PDT 2.18 1151 + Not Applicable
09/03/2026 02 AM PDT 2.21 1170 + Not Applicable
09/03/2026 03 AM PDT 2.22 1177 + Not Applicable
09/03/2026 04 AM PDT 2.23 1183 + Not Applicable
09/03/2026 05 AM PDT 2.24 1190 + Not Applicable
09/03/2026 06 AM PDT 2.23 1183 - Not Applicable
09/03/2026 07 AM PDT 2.22 1177 - Not Applicable
09/03/2026 08 AM PDT 2.21 1170 - Not Applicable
09/03/2026 09 AM PDT 2.20 1164 - Not Applicable
09/03/2026 10 AM PDT 2.20 1164 0 Not Applicable
09/03/2026 11 AM PDT 2.19 1158 - Not Applicable
09/03/2026 12 PM PDT 2.19 1158 0 Not Applicable
09/03/2026 01 PM PDT 2.19 1158 0 Not Applicable
09/03/2026 02 PM PDT 2.18 1151 - Not Applicable
09/03/2026 03 PM PDT 2.18 1151 0 Not Applicable
09/03/2026 04 PM PDT 2.17 1145 - Not Applicable
09/03/2026 05 PM PDT 2.17 1145 0 Not Applicable
09/03/2026 06 PM PDT 2.17 1145 0 Not Applicable
09/03/2026 07 PM PDT 2.17 1145 0 Not Applicable
09/03/2026 08 PM PDT 2.16 1138 - Not Applicable
09/03/2026 09 PM PDT 2.16 1138 0 Not Applicable
09/03/2026 10 PM PDT 2.15 1132 - Not Applicable
09/03/2026 11 PM PDT 2.15 1132 0 Not Applicable
09/04/2026 12 AM PDT 2.13 1120 - Not Applicable
09/04/2026 01 AM PDT 2.12 1113 - Not Applicable
09/04/2026 02 AM PDT 2.12 1113 0 Not Applicable
09/04/2026 03 AM PDT 2.11 1107 - Not Applicable
09/04/2026 04 AM PDT 2.10 1101 - Not Applicable
09/04/2026 05 AM PDT 2.09 1095 - Not Applicable
09/04/2026 06 AM PDT 2.08 1089 - Not Applicable
09/04/2026 07 AM PDT 2.07 1083 - Not Applicable
09/04/2026 08 AM PDT 2.06 1078 - Not Applicable
09/04/2026 09 AM PDT 2.06 1078 0 Not Applicable
09/04/2026 10 AM PDT 2.05 1072 - Not Applicable
09/04/2026 11 AM PDT 2.04 1066 - Not Applicable
09/04/2026 12 PM PDT 2.03 1060 - Not Applicable
09/04/2026 01 PM PDT 2.03 1060 0 Not Applicable
09/04/2026 02 PM PDT 2.02 1055 - Not Applicable
09/04/2026 03 PM PDT 2.02 1055 0 Not Applicable
09/04/2026 04 PM PDT 2.01 1049 - Not Applicable
09/04/2026 05 PM PDT 2.01 1049 0 Not Applicable
09/04/2026 06 PM PDT 2.00 1043 - Not Applicable
09/04/2026 07 PM PDT 2.00 1043 0 Not Applicable
09/04/2026 08 PM PDT 2.00 1043 0 Not Applicable
09/04/2026 09 PM PDT 1.99 1038 - Not Applicable
09/04/2026 10 PM PDT 1.99 1038 0 Not Applicable
09/04/2026 11 PM PDT 1.99 1038 0 Not Applicable
09/05/2026 12 AM PDT 1.98 1032 - Not Applicable
09/05/2026 01 AM PDT 1.98 1032 0 Not Applicable
09/05/2026 02 AM PDT 1.98 1032 0 Not Applicable
09/05/2026 03 AM PDT 1.98 1032 0 Not Applicable
09/05/2026 04 AM PDT 1.98 1032 0 Not Applicable
09/05/2026 05 AM PDT 1.97 1026 - Not Applicable
09/05/2026 06 AM PDT 1.97 1026 0 Not Applicable
09/05/2026 07 AM PDT 1.97 1026 0 Not Applicable
09/05/2026 08 AM PDT 1.97 1026 0 Not Applicable
09/05/2026 09 AM PDT 1.97 1026 0 Not Applicable
09/05/2026 10 AM PDT 1.97 1026 0 Not Applicable
09/05/2026 11 AM PDT 1.97 1026 0 Not Applicable
09/05/2026 12 PM PDT 1.97 1026 0 Not Applicable
09/05/2026 01 PM PDT 1.97 1026 0 Not Applicable
09/05/2026 02 PM PDT 1.97 1026 0 Not Applicable
09/05/2026 03 PM PDT 1.97 1026 0 Not Applicable
09/05/2026 04 PM PDT 1.97 1026 0 Not Applicable
09/05/2026 05 PM PDT 1.97 1026 0 Not Applicable
09/05/2026 06 PM PDT 1.97 1026 0 Not Applicable
09/05/2026 07 PM PDT 1.97 1026 0 Not Applicable
09/05/2026 08 PM PDT 1.97 1026 0 Not Applicable
09/05/2026 09 PM PDT 1.97 1026 0 Not Applicable
09/05/2026 10 PM PDT 1.98 1032 + Not Applicable
09/05/2026 11 PM PDT 1.98 1032 0 Not Applicable
09/06/2026 12 AM PDT 1.98 1032 0 Not Applicable
09/06/2026 01 AM PDT 1.98 1032 0 Not Applicable
09/06/2026 02 AM PDT 1.98 1032 0 Not Applicable
09/06/2026 03 AM PDT 1.98 1032 0 Not Applicable
09/06/2026 04 AM PDT 1.98 1032 0 Not Applicable
09/06/2026 05 AM PDT 1.98 1032 0 Not Applicable
09/06/2026 06 AM PDT 1.98 1032 0 Not Applicable
09/06/2026 07 AM PDT 1.98 1032 0 Not Applicable
09/06/2026 08 AM PDT 1.99 1038 + Not Applicable
09/06/2026 09 AM PDT 1.99 1038 0 Not Applicable
09/06/2026 10 AM PDT 1.99 1038 0 Not Applicable
09/06/2026 11 AM PDT 2.00 1043 + Not Applicable
09/06/2026 12 PM PDT 2.00 1043 0 Not Applicable
09/06/2026 01 PM PDT 2.01 1049 + Not Applicable
09/06/2026 02 PM PDT 2.02 1055 + Not Applicable
09/06/2026 03 PM PDT 2.02 1055 0 Not Applicable
09/06/2026 04 PM PDT 2.03 1060 + Not Applicable
09/06/2026 05 PM PDT 2.04 1066 + Not Applicable
09/06/2026 06 PM PDT 2.04 1066 0 Not Applicable
09/06/2026 07 PM PDT 2.05 1072 + Not Applicable
09/06/2026 08 PM PDT 2.06 1078 + Not Applicable
09/06/2026 09 PM PDT 2.06 1078 0 Not Applicable
09/06/2026 10 PM PDT 2.06 1078 0 Not Applicable
09/06/2026 11 PM PDT 2.06 1078 0 Not Applicable
09/07/2026 12 AM PDT 2.06 1078 0 Not Applicable
09/07/2026 01 AM PDT 2.06 1078 0 Not Applicable
09/07/2026 02 AM PDT 2.06 1078 0 Not Applicable
09/07/2026 03 AM PDT 2.06 1078 0 Not Applicable
09/07/2026 04 AM PDT 2.05 1072 - Not Applicable
09/07/2026 05 AM PDT 2.05 1072 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.
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