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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: | Aug 30 2026 at 7:12 AM PDT | Next Issuance: | Aug 31 2026 at 9:00 AM PDT
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| Action/Monitor: 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: 08/30/2026 at 07:12 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 08/29/2026 at 03:00 PM PDT
# Maximum Observed Stage: 3.23 Feet
# Maximum Observed Flow: 2070 cfs
#
# Earliest Date & Time of Maximum Forecast: 08/30/2026 at 08:00 AM PDT
# Maximum Forecast Stage: 3.09 Feet
# Maximum Forecast Flow: 1946 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
08/25/2026 07 AM PDT 1.87 1043 Normal
08/25/2026 08 AM PDT 1.87 1043 0 Normal
08/25/2026 09 AM PDT 1.88 1049 + Normal
08/25/2026 10 AM PDT 1.87 1043 - Normal
08/25/2026 11 AM PDT 1.87 1043 0 Normal
08/25/2026 12 PM PDT 1.87 1043 0 Normal
08/25/2026 01 PM PDT 1.87 1043 0 Normal
08/25/2026 02 PM PDT 1.87 1043 0 Normal
08/25/2026 03 PM PDT 1.87 1043 0 Normal
08/25/2026 04 PM PDT 1.87 1043 0 Normal
08/25/2026 05 PM PDT 1.86 1037 - Normal
08/25/2026 06 PM PDT 1.87 1043 + Normal
08/25/2026 07 PM PDT 1.86 1037 - Normal
08/25/2026 08 PM PDT 1.86 1037 0 Normal
08/25/2026 09 PM PDT 1.86 1037 0 Normal
08/25/2026 10 PM PDT 1.86 1037 0 Normal
08/25/2026 11 PM PDT 1.86 1037 0 Normal
08/26/2026 12 AM PDT 1.85 1031 - Normal
08/26/2026 01 AM PDT 1.86 1037 + Normal
08/26/2026 02 AM PDT 1.85 1031 - Normal
08/26/2026 03 AM PDT 1.85 1031 0 Normal
08/26/2026 04 AM PDT 1.85 1031 0 Normal
08/26/2026 05 AM PDT 1.85 1031 0 Normal
08/26/2026 06 AM PDT 1.85 1031 0 Normal
08/26/2026 07 AM PDT 1.85 1031 0 Normal
08/26/2026 08 AM PDT 1.85 1031 0 Normal
08/26/2026 09 AM PDT 1.86 1037 + Normal
08/26/2026 10 AM PDT 1.86 1037 0 Normal
08/26/2026 11 AM PDT 1.86 1037 0 Normal
08/26/2026 12 PM PDT 1.86 1037 0 Normal
08/26/2026 01 PM PDT 1.87 1043 + Normal
08/26/2026 02 PM PDT 1.88 1049 + Normal
08/26/2026 03 PM PDT 1.89 1055 + Normal
08/26/2026 04 PM PDT 1.90 1062 + Normal
08/26/2026 05 PM PDT 1.91 1068 + Normal
08/26/2026 06 PM PDT 1.91 1068 0 Normal
08/26/2026 07 PM PDT 1.91 1068 0 Normal
08/26/2026 08 PM PDT 1.91 1068 0 Normal
08/26/2026 09 PM PDT 1.91 1068 0 Normal
08/26/2026 10 PM PDT 1.91 1068 0 Normal
08/26/2026 11 PM PDT 1.90 1062 - Normal
08/27/2026 12 AM PDT 1.90 1062 0 Normal
08/27/2026 01 AM PDT 1.90 1062 0 Normal
08/27/2026 02 AM PDT 1.90 1062 0 Normal
08/27/2026 03 AM PDT 1.90 1062 0 Normal
08/27/2026 04 AM PDT 1.90 1062 0 Normal
08/27/2026 05 AM PDT 1.90 1062 0 Normal
08/27/2026 06 AM PDT 1.90 1062 0 Normal
08/27/2026 07 AM PDT 1.90 1062 0 Normal
08/27/2026 08 AM PDT 1.91 1068 + Normal
08/27/2026 09 AM PDT 1.91 1068 0 Normal
08/27/2026 10 AM PDT 1.92 1074 + Normal
08/27/2026 11 AM PDT 1.92 1074 0 Normal
08/27/2026 12 PM PDT 1.92 1074 0 Normal
08/27/2026 01 PM PDT 1.91 1068 - Normal
08/27/2026 02 PM PDT 1.90 1062 - Normal
08/27/2026 03 PM PDT 1.91 1068 + Normal
08/27/2026 04 PM PDT 1.90 1062 - Normal
08/27/2026 05 PM PDT 1.90 1062 0 Normal
08/27/2026 06 PM PDT 1.90 1062 0 Normal
08/27/2026 07 PM PDT 1.90 1062 0 Normal
08/27/2026 08 PM PDT 1.90 1062 0 Normal
08/27/2026 09 PM PDT 1.91 1068 + Normal
08/27/2026 10 PM PDT 1.91 1068 0 Normal
08/27/2026 11 PM PDT 1.90 1062 - Normal
08/28/2026 12 AM PDT 1.89 1055 - Normal
08/28/2026 01 AM PDT 1.89 1055 0 Normal
08/28/2026 02 AM PDT 1.89 1055 0 Normal
08/28/2026 03 AM PDT 1.90 1062 + Normal
08/28/2026 04 AM PDT 1.89 1055 - Normal
08/28/2026 05 AM PDT 1.90 1062 + Normal
08/28/2026 06 AM PDT 1.90 1062 0 Normal
08/28/2026 07 AM PDT 1.90 1062 0 Normal
08/28/2026 08 AM PDT 1.90 1062 0 Normal
08/28/2026 09 AM PDT 1.90 1062 0 Normal
08/28/2026 10 AM PDT 1.91 1068 + Normal
08/28/2026 11 AM PDT 1.91 1068 0 Normal
08/28/2026 12 PM PDT 1.91 1068 0 Normal
08/28/2026 01 PM PDT 1.91 1068 0 Normal
08/28/2026 02 PM PDT 1.90 1062 - Normal
08/28/2026 03 PM PDT 1.89 1055 - Normal
08/28/2026 04 PM PDT 1.90 1062 + Normal
08/28/2026 05 PM PDT 1.89 1055 - Normal
08/28/2026 06 PM PDT 1.88 1049 - Normal
08/28/2026 07 PM PDT 1.88 1049 0 Normal
08/28/2026 08 PM PDT 1.88 1049 0 Normal
08/28/2026 09 PM PDT 1.88 1049 0 Normal
08/28/2026 10 PM PDT 1.89 1055 + Normal
08/28/2026 11 PM PDT 1.89 1055 0 Normal
08/29/2026 12 AM PDT 1.89 1055 0 Normal
08/29/2026 01 AM PDT 1.89 1055 0 Normal
08/29/2026 02 AM PDT 1.89 1055 0 Normal
08/29/2026 03 AM PDT 1.89 1055 0 Normal
08/29/2026 04 AM PDT 1.89 1055 0 Normal
08/29/2026 05 AM PDT 1.93 1080 + Normal
08/29/2026 06 AM PDT 2.88 1768 + Normal
08/29/2026 07 AM PDT 3.08 1938 + Normal
08/29/2026 08 AM PDT 3.15 1999 + Normal
08/29/2026 09 AM PDT 3.18 2026 + Normal
08/29/2026 10 AM PDT 3.20 2043 + Normal
08/29/2026 11 AM PDT 3.22 2061 + Normal
08/29/2026 12 PM PDT 3.23 2070 + Normal
08/29/2026 01 PM PDT 3.23 2070 0 Normal
08/29/2026 02 PM PDT 3.23 2070 0 Normal
08/29/2026 03 PM PDT 3.23 2070 0 Normal
08/29/2026 04 PM PDT 3.22 2061 - Normal
08/29/2026 05 PM PDT 3.16 2008 - Normal
08/29/2026 06 PM PDT 3.13 1981 - Normal
08/29/2026 07 PM PDT 3.14 1990 + Normal
08/29/2026 08 PM PDT 3.17 2017 + Normal
08/29/2026 09 PM PDT 3.18 2026 + Normal
08/29/2026 10 PM PDT 3.17 2017 - Normal
08/29/2026 11 PM PDT 3.17 2017 0 Normal
08/30/2026 12 AM PDT 3.18 2026 + Normal
08/30/2026 01 AM PDT 3.17 2017 - Normal
08/30/2026 02 AM PDT 3.16 2008 - Normal
08/30/2026 03 AM PDT 3.15 1999 - Normal
08/30/2026 04 AM PDT 3.15 1999 0 Normal
08/30/2026 05 AM PDT 3.14 1990 - Normal
08/30/2026 06 AM PDT 3.11 1964 - Normal
08/30/2026 07 AM PDT 3.10 1955 - Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
08/30/2026 08 AM PDT 3.09 1946 Normal
08/30/2026 09 AM PDT 3.08 1938 - Normal
08/30/2026 10 AM PDT 3.06 1920 - Normal
08/30/2026 11 AM PDT 3.03 1895 - Normal
08/30/2026 12 PM PDT 3.00 1869 - Normal
08/30/2026 01 PM PDT 2.97 1844 - Normal
08/30/2026 02 PM PDT 2.94 1818 - Normal
08/30/2026 03 PM PDT 2.93 1810 - Normal
08/30/2026 04 PM PDT 2.91 1793 - Normal
08/30/2026 05 PM PDT 2.89 1777 - Normal
08/30/2026 06 PM PDT 2.88 1768 - Normal
08/30/2026 07 PM PDT 2.86 1752 - Normal
08/30/2026 08 PM PDT 2.84 1736 - Normal
08/30/2026 09 PM PDT 2.83 1727 - Normal
08/30/2026 10 PM PDT 2.81 1711 - Normal
08/30/2026 11 PM PDT 2.80 1703 - Normal
08/31/2026 12 AM PDT 2.78 1687 - Normal
08/31/2026 01 AM PDT 2.77 1679 - Normal
08/31/2026 02 AM PDT 2.75 1663 - Normal
08/31/2026 03 AM PDT 2.73 1647 - Normal
08/31/2026 04 AM PDT 2.71 1631 - Normal
08/31/2026 05 AM PDT 2.70 1623 - Normal
08/31/2026 06 AM PDT 2.68 1608 - Normal
08/31/2026 07 AM PDT 2.66 1592 - Normal
08/31/2026 08 AM PDT 2.64 1577 - Normal
08/31/2026 09 AM PDT 2.62 1561 - Normal
08/31/2026 10 AM PDT 2.60 1546 - Normal
08/31/2026 11 AM PDT 2.58 1531 - Normal
08/31/2026 12 PM PDT 2.56 1515 - Normal
08/31/2026 01 PM PDT 2.54 1500 - Normal
08/31/2026 02 PM PDT 2.53 1493 - Normal
08/31/2026 03 PM PDT 2.51 1478 - Normal
08/31/2026 04 PM PDT 2.50 1470 - Normal
08/31/2026 05 PM PDT 2.49 1463 - Normal
08/31/2026 06 PM PDT 2.48 1456 - Normal
08/31/2026 07 PM PDT 2.47 1448 - Normal
08/31/2026 08 PM PDT 2.46 1441 - Normal
08/31/2026 09 PM PDT 2.45 1433 - Normal
08/31/2026 10 PM PDT 2.44 1426 - Normal
08/31/2026 11 PM PDT 2.44 1426 0 Normal
09/01/2026 12 AM PDT 2.43 1419 - Normal
09/01/2026 01 AM PDT 2.43 1419 0 Normal
09/01/2026 02 AM PDT 2.42 1412 - Normal
09/01/2026 03 AM PDT 2.42 1412 0 Normal
09/01/2026 04 AM PDT 2.42 1412 0 Normal
09/01/2026 05 AM PDT 2.42 1412 0 Normal
09/01/2026 06 AM PDT 2.41 1404 - Normal
09/01/2026 07 AM PDT 2.41 1404 0 Normal
09/01/2026 08 AM PDT 2.41 1404 0 Normal
09/01/2026 09 AM PDT 2.41 1404 0 Normal
09/01/2026 10 AM PDT 2.41 1404 0 Normal
09/01/2026 11 AM PDT 2.40 1397 - Normal
09/01/2026 12 PM PDT 2.40 1397 0 Normal
09/01/2026 01 PM PDT 2.40 1397 0 Normal
09/01/2026 02 PM PDT 2.40 1397 0 Normal
09/01/2026 03 PM PDT 2.40 1397 0 Normal
09/01/2026 04 PM PDT 2.40 1397 0 Normal
09/01/2026 05 PM PDT 2.40 1397 0 Normal
09/01/2026 06 PM PDT 2.40 1397 0 Normal
09/01/2026 07 PM PDT 2.40 1397 0 Normal
09/01/2026 08 PM PDT 2.41 1404 + Normal
09/01/2026 09 PM PDT 2.41 1404 0 Normal
09/01/2026 10 PM PDT 2.41 1404 0 Normal
09/01/2026 11 PM PDT 2.41 1404 0 Normal
09/02/2026 12 AM PDT 2.41 1404 0 Normal
09/02/2026 01 AM PDT 2.41 1404 0 Normal
09/02/2026 02 AM PDT 2.42 1412 + Normal
09/02/2026 03 AM PDT 2.42 1412 0 Normal
09/02/2026 04 AM PDT 2.42 1412 0 Normal
09/02/2026 05 AM PDT 2.42 1412 0 Normal
09/02/2026 06 AM PDT 2.42 1412 0 Normal
09/02/2026 07 AM PDT 2.43 1419 + Normal
09/02/2026 08 AM PDT 2.43 1419 0 Normal
09/02/2026 09 AM PDT 2.43 1419 0 Normal
09/02/2026 10 AM PDT 2.43 1419 0 Normal
09/02/2026 11 AM PDT 2.44 1426 + Normal
09/02/2026 12 PM PDT 2.44 1426 0 Normal
09/02/2026 01 PM PDT 2.44 1426 0 Normal
09/02/2026 02 PM PDT 2.44 1426 0 Normal
09/02/2026 03 PM PDT 2.45 1433 + Normal
09/02/2026 04 PM PDT 2.45 1433 0 Normal
09/02/2026 05 PM PDT 2.45 1433 0 Normal
09/02/2026 06 PM PDT 2.46 1441 + Normal
09/02/2026 07 PM PDT 2.46 1441 0 Normal
09/02/2026 08 PM PDT 2.46 1441 0 Normal
09/02/2026 09 PM PDT 2.47 1448 + Normal
09/02/2026 10 PM PDT 2.47 1448 0 Normal
09/02/2026 11 PM PDT 2.48 1456 + Normal
09/03/2026 12 AM PDT 2.48 1456 0 Normal
09/03/2026 01 AM PDT 2.48 1456 0 Normal
09/03/2026 02 AM PDT 2.48 1456 0 Normal
09/03/2026 03 AM PDT 2.49 1463 + Normal
09/03/2026 04 AM PDT 2.49 1463 0 Normal
09/03/2026 05 AM PDT 2.49 1463 0 Normal
09/03/2026 06 AM PDT 2.49 1463 0 Normal
09/03/2026 07 AM PDT 2.49 1463 0 Normal
09/03/2026 08 AM PDT 2.50 1470 + Normal
09/03/2026 09 AM PDT 2.50 1470 0 Normal
09/03/2026 10 AM PDT 2.50 1470 0 Normal
09/03/2026 11 AM PDT 2.51 1478 + Normal
09/03/2026 12 PM PDT 2.51 1478 0 Normal
09/03/2026 01 PM PDT 2.51 1478 0 Normal
09/03/2026 02 PM PDT 2.52 1485 + Normal
09/03/2026 03 PM PDT 2.52 1485 0 Normal
09/03/2026 04 PM PDT 2.52 1485 0 Normal
09/03/2026 05 PM PDT 2.53 1493 + Normal
09/03/2026 06 PM PDT 2.54 1500 + Normal
09/03/2026 07 PM PDT 2.54 1500 0 Normal
09/03/2026 08 PM PDT 2.55 1508 + Normal
09/03/2026 09 PM PDT 2.56 1515 + Normal
09/03/2026 10 PM PDT 2.56 1515 0 Normal
09/03/2026 11 PM PDT 2.57 1523 + Normal
09/04/2026 12 AM PDT 2.58 1531 + Normal
09/04/2026 01 AM PDT 2.59 1538 + Normal
09/04/2026 02 AM PDT 2.60 1546 + Normal
09/04/2026 03 AM PDT 2.60 1546 0 Normal
09/04/2026 04 AM PDT 2.61 1554 + Normal
09/04/2026 05 AM PDT 2.62 1561 + 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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