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KLAMATH RIVER - SEIAD VALLEY (SEIC1)
| Latitude: 41.85º N | Longitude: 123.23º W | Elevation: 1320 Feet | | Forecast Type: Official Location |
| Location: Siskiyou County in California | Bulletin Group: North Coast | River Group: Klamath |
| Issuance Time: | Sep 11 2026 at 7:28 AM PDT | Next Issuance: | Sep 12 2026 at 9:00 AM PDT
| |
| Action: 13.0 Feet | Minor Flood: 15.0 Feet | Moderate Flood: 20.0 Feet | Major Flood: 28.0 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Klamath River - Seiad Valley (SEIC1)
#
# File Generation Time: 09/11/2026 at 07:28 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 09/06/2026 at 03:00 PM PDT
# Maximum Observed Stage: 2.11 Feet
# Maximum Observed Flow: 1175 cfs
#
# Earliest Date & Time of Maximum Forecast: 09/16/2026 at 12:00 AM PDT
# Maximum Forecast Stage: 2.14 Feet
# Maximum Forecast Flow: 1195 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
09/06/2026 07 AM PDT 2.06 1141 Normal
09/06/2026 08 AM PDT 2.06 1141 0 Normal
09/06/2026 09 AM PDT 2.05 1135 - Normal
09/06/2026 10 AM PDT 2.04 1128 - Normal
09/06/2026 11 AM PDT 2.06 1141 + Normal
09/06/2026 12 PM PDT 2.08 1155 + Normal
09/06/2026 01 PM PDT 2.10 1168 + Normal
09/06/2026 02 PM PDT 2.11 1175 + Normal
09/06/2026 03 PM PDT 2.11 1175 0 Normal
09/06/2026 04 PM PDT 2.10 1168 - Normal
09/06/2026 05 PM PDT 2.10 1168 0 Normal
09/06/2026 06 PM PDT 2.10 1168 0 Normal
09/06/2026 07 PM PDT 2.10 1168 0 Normal
09/06/2026 08 PM PDT 2.10 1168 0 Normal
09/06/2026 09 PM PDT 2.10 1168 0 Normal
09/06/2026 10 PM PDT 2.09 1161 - Normal
09/06/2026 11 PM PDT 2.09 1161 0 Normal
09/07/2026 12 AM PDT 2.10 1168 + Normal
09/07/2026 01 AM PDT 2.10 1168 0 Normal
09/07/2026 02 AM PDT 2.09 1161 - Normal
09/07/2026 03 AM PDT 2.09 1161 0 Normal
09/07/2026 04 AM PDT 2.09 1161 0 Normal
09/07/2026 05 AM PDT 2.08 1155 - Normal
09/07/2026 06 AM PDT 2.08 1155 0 Normal
09/07/2026 07 AM PDT 2.07 1148 - Normal
09/07/2026 08 AM PDT 2.07 1148 0 Normal
09/07/2026 09 AM PDT 2.06 1141 - Normal
09/07/2026 10 AM PDT 2.06 1141 0 Normal
09/07/2026 11 AM PDT 2.05 1135 - Normal
09/07/2026 12 PM PDT 2.06 1141 + Normal
09/07/2026 01 PM PDT 2.05 1135 - Normal
09/07/2026 02 PM PDT 2.06 1141 + Normal
09/07/2026 03 PM PDT 2.06 1141 0 Normal
09/07/2026 04 PM PDT 2.06 1141 0 Normal
09/07/2026 05 PM PDT 2.07 1148 + Normal
09/07/2026 06 PM PDT 2.06 1141 - Normal
09/07/2026 07 PM PDT 2.06 1141 0 Normal
09/07/2026 08 PM PDT 2.06 1141 0 Normal
09/07/2026 09 PM PDT 2.05 1135 - Normal
09/07/2026 10 PM PDT 2.05 1135 0 Normal
09/07/2026 11 PM PDT 2.04 1128 - Normal
09/08/2026 12 AM PDT 2.04 1128 0 Normal
09/08/2026 01 AM PDT 2.04 1128 0 Normal
09/08/2026 02 AM PDT 2.04 1128 0 Normal
09/08/2026 03 AM PDT 2.04 1128 0 Normal
09/08/2026 04 AM PDT 2.04 1128 0 Normal
09/08/2026 05 AM PDT 2.04 1128 0 Normal
09/08/2026 06 AM PDT 2.05 1135 + Normal
09/08/2026 07 AM PDT 2.04 1128 - Normal
09/08/2026 08 AM PDT 2.05 1135 + Normal
09/08/2026 09 AM PDT 2.04 1128 - Normal
09/08/2026 10 AM PDT 2.05 1135 + Normal
09/08/2026 11 AM PDT 2.05 1135 0 Normal
09/08/2026 12 PM PDT 2.05 1135 0 Normal
09/08/2026 01 PM PDT 2.05 1135 0 Normal
09/08/2026 02 PM PDT 2.05 1135 0 Normal
09/08/2026 03 PM PDT 2.04 1128 - Normal
09/08/2026 04 PM PDT 2.03 1121 - Normal
09/08/2026 05 PM PDT 2.03 1121 0 Normal
09/08/2026 06 PM PDT 2.03 1121 0 Normal
09/08/2026 07 PM PDT 2.03 1121 0 Normal
09/08/2026 08 PM PDT 2.03 1121 0 Normal
09/08/2026 09 PM PDT 2.03 1121 0 Normal
09/08/2026 10 PM PDT 2.03 1121 0 Normal
09/08/2026 11 PM PDT 2.03 1121 0 Normal
09/09/2026 12 AM PDT 2.03 1121 0 Normal
09/09/2026 01 AM PDT 2.02 1115 - Normal
09/09/2026 02 AM PDT 2.02 1115 0 Normal
09/09/2026 03 AM PDT 2.02 1115 0 Normal
09/09/2026 04 AM PDT 2.01 1108 - Normal
09/09/2026 05 AM PDT 2.02 1115 + Normal
09/09/2026 06 AM PDT 2.02 1115 0 Normal
09/09/2026 07 AM PDT 2.03 1121 + Normal
09/09/2026 08 AM PDT 2.03 1121 0 Normal
09/09/2026 09 AM PDT 2.02 1115 - Normal
09/09/2026 10 AM PDT 2.03 1121 + Normal
09/09/2026 11 AM PDT 2.02 1115 - Normal
09/09/2026 12 PM PDT 2.03 1121 + Normal
09/09/2026 01 PM PDT 2.03 1121 0 Normal
09/09/2026 02 PM PDT 2.02 1115 - Normal
09/09/2026 03 PM PDT 2.03 1121 + Normal
09/09/2026 04 PM PDT 2.04 1128 + Normal
09/09/2026 05 PM PDT 2.04 1128 0 Normal
09/09/2026 06 PM PDT 2.06 1141 + Normal
09/09/2026 07 PM PDT 2.06 1141 0 Normal
09/09/2026 08 PM PDT 2.06 1141 0 Normal
09/09/2026 09 PM PDT 2.06 1141 0 Normal
09/09/2026 10 PM PDT 2.06 1141 0 Normal
09/09/2026 11 PM PDT 2.06 1141 0 Normal
09/10/2026 12 AM PDT 2.06 1141 0 Normal
09/10/2026 01 AM PDT 2.06 1141 0 Normal
09/10/2026 02 AM PDT 2.06 1141 0 Normal
09/10/2026 03 AM PDT 2.07 1148 + Normal
09/10/2026 04 AM PDT 2.06 1141 - Normal
09/10/2026 05 AM PDT 2.07 1148 + Normal
09/10/2026 06 AM PDT 2.07 1148 0 Normal
09/10/2026 07 AM PDT 2.07 1148 0 Normal
09/10/2026 08 AM PDT 2.07 1148 0 Normal
09/10/2026 09 AM PDT 2.07 1148 0 Normal
09/10/2026 10 AM PDT 2.06 1141 - Normal
09/10/2026 11 AM PDT 2.06 1141 0 Normal
09/10/2026 12 PM PDT 2.06 1141 0 Normal
09/10/2026 01 PM PDT 2.07 1148 + Normal
09/10/2026 02 PM PDT 2.06 1141 - Normal
09/10/2026 03 PM PDT 2.06 1141 0 Normal
09/10/2026 04 PM PDT 2.06 1141 0 Normal
09/10/2026 05 PM PDT 2.06 1141 0 Normal
09/10/2026 06 PM PDT 2.05 1135 - Normal
09/10/2026 07 PM PDT 2.04 1128 - Normal
09/10/2026 08 PM PDT 2.05 1135 + Normal
09/10/2026 09 PM PDT 2.05 1135 0 Normal
09/10/2026 10 PM PDT 2.04 1128 - Normal
09/10/2026 11 PM PDT 2.05 1135 + Normal
09/11/2026 12 AM PDT 2.04 1128 - Normal
09/11/2026 01 AM PDT 2.04 1128 0 Normal
09/11/2026 02 AM PDT 2.05 1135 + Normal
09/11/2026 03 AM PDT 2.05 1135 0 Normal
09/11/2026 04 AM PDT 2.05 1135 0 Normal
09/11/2026 05 AM PDT 2.05 1135 0 Normal
09/11/2026 06 AM PDT 2.04 1128 - Normal
09/11/2026 07 AM PDT 2.04 1128 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
09/11/2026 08 AM PDT 2.04 1128 Normal
09/11/2026 09 AM PDT 2.04 1128 0 Normal
09/11/2026 10 AM PDT 2.03 1121 - Normal
09/11/2026 11 AM PDT 2.03 1121 0 Normal
09/11/2026 12 PM PDT 2.03 1121 0 Normal
09/11/2026 01 PM PDT 2.03 1121 0 Normal
09/11/2026 02 PM PDT 2.03 1121 0 Normal
09/11/2026 03 PM PDT 2.03 1121 0 Normal
09/11/2026 04 PM PDT 2.03 1121 0 Normal
09/11/2026 05 PM PDT 2.02 1115 - Normal
09/11/2026 06 PM PDT 2.02 1115 0 Normal
09/11/2026 07 PM PDT 2.02 1115 0 Normal
09/11/2026 08 PM PDT 2.02 1115 0 Normal
09/11/2026 09 PM PDT 2.03 1121 + Normal
09/11/2026 10 PM PDT 2.03 1121 0 Normal
09/11/2026 11 PM PDT 2.04 1128 + Normal
09/12/2026 12 AM PDT 2.04 1128 0 Normal
09/12/2026 01 AM PDT 2.04 1128 0 Normal
09/12/2026 02 AM PDT 2.04 1128 0 Normal
09/12/2026 03 AM PDT 2.05 1135 + Normal
09/12/2026 04 AM PDT 2.05 1135 0 Normal
09/12/2026 05 AM PDT 2.05 1135 0 Normal
09/12/2026 06 AM PDT 2.05 1135 0 Normal
09/12/2026 07 AM PDT 2.05 1135 0 Normal
09/12/2026 08 AM PDT 2.05 1135 0 Normal
09/12/2026 09 AM PDT 2.05 1135 0 Normal
09/12/2026 10 AM PDT 2.06 1141 + Normal
09/12/2026 11 AM PDT 2.06 1141 0 Normal
09/12/2026 12 PM PDT 2.06 1141 0 Normal
09/12/2026 01 PM PDT 2.06 1141 0 Normal
09/12/2026 02 PM PDT 2.06 1141 0 Normal
09/12/2026 03 PM PDT 2.06 1141 0 Normal
09/12/2026 04 PM PDT 2.06 1141 0 Normal
09/12/2026 05 PM PDT 2.06 1141 0 Normal
09/12/2026 06 PM PDT 2.06 1141 0 Normal
09/12/2026 07 PM PDT 2.06 1141 0 Normal
09/12/2026 08 PM PDT 2.06 1141 0 Normal
09/12/2026 09 PM PDT 2.06 1141 0 Normal
09/12/2026 10 PM PDT 2.06 1141 0 Normal
09/12/2026 11 PM PDT 2.06 1141 0 Normal
09/13/2026 12 AM PDT 2.07 1148 + Normal
09/13/2026 01 AM PDT 2.07 1148 0 Normal
09/13/2026 02 AM PDT 2.07 1148 0 Normal
09/13/2026 03 AM PDT 2.07 1148 0 Normal
09/13/2026 04 AM PDT 2.07 1148 0 Normal
09/13/2026 05 AM PDT 2.07 1148 0 Normal
09/13/2026 06 AM PDT 2.07 1148 0 Normal
09/13/2026 07 AM PDT 2.07 1148 0 Normal
09/13/2026 08 AM PDT 2.07 1148 0 Normal
09/13/2026 09 AM PDT 2.07 1148 0 Normal
09/13/2026 10 AM PDT 2.08 1155 + Normal
09/13/2026 11 AM PDT 2.08 1155 0 Normal
09/13/2026 12 PM PDT 2.08 1155 0 Normal
09/13/2026 01 PM PDT 2.08 1155 0 Normal
09/13/2026 02 PM PDT 2.08 1155 0 Normal
09/13/2026 03 PM PDT 2.08 1155 0 Normal
09/13/2026 04 PM PDT 2.08 1155 0 Normal
09/13/2026 05 PM PDT 2.08 1155 0 Normal
09/13/2026 06 PM PDT 2.08 1155 0 Normal
09/13/2026 07 PM PDT 2.08 1155 0 Normal
09/13/2026 08 PM PDT 2.08 1155 0 Normal
09/13/2026 09 PM PDT 2.09 1161 + Normal
09/13/2026 10 PM PDT 2.09 1161 0 Normal
09/13/2026 11 PM PDT 2.09 1161 0 Normal
09/14/2026 12 AM PDT 2.09 1161 0 Normal
09/14/2026 01 AM PDT 2.09 1161 0 Normal
09/14/2026 02 AM PDT 2.09 1161 0 Normal
09/14/2026 03 AM PDT 2.09 1161 0 Normal
09/14/2026 04 AM PDT 2.09 1161 0 Normal
09/14/2026 05 AM PDT 2.10 1168 + Normal
09/14/2026 06 AM PDT 2.10 1168 0 Normal
09/14/2026 07 AM PDT 2.10 1168 0 Normal
09/14/2026 08 AM PDT 2.10 1168 0 Normal
09/14/2026 09 AM PDT 2.10 1168 0 Normal
09/14/2026 10 AM PDT 2.10 1168 0 Normal
09/14/2026 11 AM PDT 2.10 1168 0 Normal
09/14/2026 12 PM PDT 2.10 1168 0 Normal
09/14/2026 01 PM PDT 2.10 1168 0 Normal
09/14/2026 02 PM PDT 2.10 1168 0 Normal
09/14/2026 03 PM PDT 2.10 1168 0 Normal
09/14/2026 04 PM PDT 2.10 1168 0 Normal
09/14/2026 05 PM PDT 2.10 1168 0 Normal
09/14/2026 06 PM PDT 2.10 1168 0 Normal
09/14/2026 07 PM PDT 2.11 1175 + Normal
09/14/2026 08 PM PDT 2.11 1175 0 Normal
09/14/2026 09 PM PDT 2.11 1175 0 Normal
09/14/2026 10 PM PDT 2.11 1175 0 Normal
09/14/2026 11 PM PDT 2.11 1175 0 Normal
09/15/2026 12 AM PDT 2.11 1175 0 Normal
09/15/2026 01 AM PDT 2.11 1175 0 Normal
09/15/2026 02 AM PDT 2.11 1175 0 Normal
09/15/2026 03 AM PDT 2.12 1182 + Normal
09/15/2026 04 AM PDT 2.12 1182 0 Normal
09/15/2026 05 AM PDT 2.12 1182 0 Normal
09/15/2026 06 AM PDT 2.12 1182 0 Normal
09/15/2026 07 AM PDT 2.12 1182 0 Normal
09/15/2026 08 AM PDT 2.12 1182 0 Normal
09/15/2026 09 AM PDT 2.12 1182 0 Normal
09/15/2026 10 AM PDT 2.12 1182 0 Normal
09/15/2026 11 AM PDT 2.12 1182 0 Normal
09/15/2026 12 PM PDT 2.12 1182 0 Normal
09/15/2026 01 PM PDT 2.13 1189 + Normal
09/15/2026 02 PM PDT 2.13 1189 0 Normal
09/15/2026 03 PM PDT 2.13 1189 0 Normal
09/15/2026 04 PM PDT 2.13 1189 0 Normal
09/15/2026 05 PM PDT 2.13 1189 0 Normal
09/15/2026 06 PM PDT 2.13 1189 0 Normal
09/15/2026 07 PM PDT 2.13 1189 0 Normal
09/15/2026 08 PM PDT 2.13 1189 0 Normal
09/15/2026 09 PM PDT 2.13 1189 0 Normal
09/15/2026 10 PM PDT 2.13 1189 0 Normal
09/15/2026 11 PM PDT 2.13 1189 0 Normal
09/16/2026 12 AM PDT 2.14 1195 + Normal
09/16/2026 01 AM PDT 2.14 1195 0 Normal
09/16/2026 02 AM PDT 2.14 1195 0 Normal
09/16/2026 03 AM PDT 2.14 1195 0 Normal
09/16/2026 04 AM PDT 2.14 1195 0 Normal
09/16/2026 05 AM PDT 2.14 1195 0 Normal
#
# 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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