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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: | Apr 06 2026 at 1:05 PM PDT | Next Issuance: | Apr 07 2026 at 9:00 AM PDT
| |
| 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: 04/06/2026 at 01:05 PM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/02/2026 at 03:00 AM PDT
# Maximum Observed Stage: 3.77 Feet
# Maximum Observed Flow: 2589 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/11/2026 at 01:00 AM PDT
# Maximum Forecast Stage: 4.08 Feet
# Maximum Forecast Flow: 2917 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/01/2026 01 PM PDT 3.58 2399 Normal
04/01/2026 02 PM PDT 3.59 2409 + Normal
04/01/2026 03 PM PDT 3.59 2409 0 Normal
04/01/2026 04 PM PDT 3.62 2439 + Normal
04/01/2026 05 PM PDT 3.66 2478 + Normal
04/01/2026 06 PM PDT 3.67 2488 + Normal
04/01/2026 07 PM PDT 3.69 2508 + Normal
04/01/2026 08 PM PDT 3.71 2528 + Normal
04/01/2026 09 PM PDT 3.74 2559 + Normal
04/01/2026 10 PM PDT 3.75 2569 + Normal
04/01/2026 11 PM PDT 3.75 2569 0 Normal
04/02/2026 12 AM PDT 3.76 2579 + Normal
04/02/2026 01 AM PDT 3.76 2579 0 Normal
04/02/2026 02 AM PDT 3.76 2579 0 Normal
04/02/2026 03 AM PDT 3.77 2589 + Normal
04/02/2026 04 AM PDT 3.76 2579 - Normal
04/02/2026 05 AM PDT 3.75 2569 - Normal
04/02/2026 06 AM PDT 3.74 2559 - Normal
04/02/2026 07 AM PDT 3.74 2559 0 Normal
04/02/2026 08 AM PDT 3.73 2549 - Normal
04/02/2026 09 AM PDT 3.74 2559 + Normal
04/02/2026 10 AM PDT 3.73 2549 - Normal
04/02/2026 11 AM PDT 3.75 2569 + Normal
04/02/2026 12 PM PDT 3.74 2559 - Normal
04/02/2026 01 PM PDT 3.73 2549 - Normal
04/02/2026 02 PM PDT 3.73 2549 0 Normal
04/02/2026 03 PM PDT 3.73 2549 0 Normal
04/02/2026 04 PM PDT 3.73 2549 0 Normal
04/02/2026 05 PM PDT 3.73 2549 0 Normal
04/02/2026 06 PM PDT 3.72 2539 - Normal
04/02/2026 07 PM PDT 3.72 2539 0 Normal
04/02/2026 08 PM PDT 3.72 2539 0 Normal
04/02/2026 09 PM PDT 3.71 2528 - Normal
04/02/2026 10 PM PDT 3.71 2528 0 Normal
04/02/2026 11 PM PDT 3.70 2518 - Normal
04/03/2026 12 AM PDT 3.71 2528 + Normal
04/03/2026 01 AM PDT 3.70 2518 - Normal
04/03/2026 02 AM PDT 3.69 2508 - Normal
04/03/2026 03 AM PDT 3.68 2498 - Normal
04/03/2026 04 AM PDT 3.66 2478 - Normal
04/03/2026 05 AM PDT 3.65 2468 - Normal
04/03/2026 06 AM PDT 3.64 2458 - Normal
04/03/2026 07 AM PDT 3.63 2449 - Normal
04/03/2026 08 AM PDT 3.63 2449 0 Normal
04/03/2026 09 AM PDT 3.63 2449 0 Normal
04/03/2026 10 AM PDT 3.63 2449 0 Normal
04/03/2026 11 AM PDT 3.62 2439 - Normal
04/03/2026 12 PM PDT 3.62 2439 0 Normal
04/03/2026 01 PM PDT 3.60 2419 - Normal
04/03/2026 02 PM PDT 3.61 2429 + Normal
04/03/2026 03 PM PDT 3.60 2419 - Normal
04/03/2026 04 PM PDT 3.59 2409 - Normal
04/03/2026 05 PM PDT 3.59 2409 0 Normal
04/03/2026 06 PM PDT 3.58 2399 - Normal
04/03/2026 07 PM PDT 3.58 2399 0 Normal
04/03/2026 08 PM PDT 3.57 2390 - Normal
04/03/2026 09 PM PDT 3.57 2390 0 Normal
04/03/2026 10 PM PDT 3.57 2390 0 Normal
04/03/2026 11 PM PDT 3.56 2380 - Normal
04/04/2026 12 AM PDT 3.56 2380 0 Normal
04/04/2026 01 AM PDT 3.56 2380 0 Normal
04/04/2026 02 AM PDT 3.56 2380 0 Normal
04/04/2026 03 AM PDT 3.56 2380 0 Normal
04/04/2026 04 AM PDT 3.56 2380 0 Normal
04/04/2026 05 AM PDT 3.56 2380 0 Normal
04/04/2026 06 AM PDT 3.56 2380 0 Normal
04/04/2026 07 AM PDT 3.57 2390 + Normal
04/04/2026 08 AM PDT 3.57 2390 0 Normal
04/04/2026 09 AM PDT 3.57 2390 0 Normal
04/04/2026 10 AM PDT 3.58 2399 + Normal
04/04/2026 11 AM PDT 3.59 2409 + Normal
04/04/2026 12 PM PDT 3.60 2419 + Normal
04/04/2026 01 PM PDT 3.60 2419 0 Normal
04/04/2026 02 PM PDT 3.61 2429 + Normal
04/04/2026 03 PM PDT 3.62 2439 + Normal
04/04/2026 04 PM PDT 3.62 2439 0 Normal
04/04/2026 05 PM PDT 3.63 2449 + Normal
04/04/2026 06 PM PDT 3.63 2449 0 Normal
04/04/2026 07 PM PDT 3.64 2458 + Normal
04/04/2026 08 PM PDT 3.64 2458 0 Normal
04/04/2026 09 PM PDT 3.65 2468 + Normal
04/04/2026 10 PM PDT 3.66 2478 + Normal
04/04/2026 11 PM PDT 3.67 2488 + Normal
04/05/2026 12 AM PDT 3.67 2488 0 Normal
04/05/2026 01 AM PDT 3.68 2498 + Normal
04/05/2026 02 AM PDT 3.69 2508 + Normal
04/05/2026 03 AM PDT 3.70 2518 + Normal
04/05/2026 04 AM PDT 3.71 2528 + Normal
04/05/2026 05 AM PDT 3.71 2528 0 Normal
04/05/2026 06 AM PDT 3.71 2528 0 Normal
04/05/2026 07 AM PDT 3.72 2539 + Normal
04/05/2026 08 AM PDT 3.72 2539 0 Normal
04/05/2026 09 AM PDT 3.72 2539 0 Normal
04/05/2026 10 AM PDT 3.72 2539 0 Normal
04/05/2026 11 AM PDT 3.72 2539 0 Normal
04/05/2026 12 PM PDT 3.72 2539 0 Normal
04/05/2026 01 PM PDT 3.72 2539 0 Normal
04/05/2026 02 PM PDT 3.72 2539 0 Normal
04/05/2026 03 PM PDT 3.72 2539 0 Normal
04/05/2026 04 PM PDT 3.72 2539 0 Normal
04/05/2026 05 PM PDT 3.73 2549 + Normal
04/05/2026 06 PM PDT 3.73 2549 0 Normal
04/05/2026 07 PM PDT 3.73 2549 0 Normal
04/05/2026 08 PM PDT 3.73 2549 0 Normal
04/05/2026 09 PM PDT 3.74 2559 + Normal
04/05/2026 10 PM PDT 3.74 2559 0 Normal
04/05/2026 11 PM PDT 3.74 2559 0 Normal
04/06/2026 12 AM PDT 3.75 2569 + Normal
04/06/2026 01 AM PDT 3.75 2569 0 Normal
04/06/2026 02 AM PDT 3.75 2569 0 Normal
04/06/2026 03 AM PDT 3.76 2579 + Normal
04/06/2026 04 AM PDT 3.76 2579 0 Normal
04/06/2026 05 AM PDT 3.76 2579 0 Normal
04/06/2026 06 AM PDT 3.76 2579 0 Normal
04/06/2026 07 AM PDT 3.75 2569 - Normal
04/06/2026 08 AM PDT 3.75 2569 0 Normal
04/06/2026 09 AM PDT 3.75 2569 0 Normal
04/06/2026 10 AM PDT 3.75 2569 0 Normal
04/06/2026 11 AM PDT 3.74 2559 - Normal
04/06/2026 12 PM PDT 3.74 2559 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
04/06/2026 01 PM PDT 3.74 2559 Normal
04/06/2026 02 PM PDT 3.74 2559 0 Normal
04/06/2026 03 PM PDT 3.73 2549 - Normal
04/06/2026 04 PM PDT 3.73 2549 0 Normal
04/06/2026 05 PM PDT 3.73 2549 0 Normal
04/06/2026 06 PM PDT 3.73 2549 0 Normal
04/06/2026 07 PM PDT 3.73 2549 0 Normal
04/06/2026 08 PM PDT 3.73 2549 0 Normal
04/06/2026 09 PM PDT 3.73 2549 0 Normal
04/06/2026 10 PM PDT 3.73 2549 0 Normal
04/06/2026 11 PM PDT 3.73 2549 0 Normal
04/07/2026 12 AM PDT 3.73 2549 0 Normal
04/07/2026 01 AM PDT 3.73 2549 0 Normal
04/07/2026 02 AM PDT 3.73 2549 0 Normal
04/07/2026 03 AM PDT 3.73 2549 0 Normal
04/07/2026 04 AM PDT 3.73 2549 0 Normal
04/07/2026 05 AM PDT 3.73 2549 0 Normal
04/07/2026 06 AM PDT 3.73 2549 0 Normal
04/07/2026 07 AM PDT 3.73 2549 0 Normal
04/07/2026 08 AM PDT 3.73 2549 0 Normal
04/07/2026 09 AM PDT 3.73 2549 0 Normal
04/07/2026 10 AM PDT 3.73 2549 0 Normal
04/07/2026 11 AM PDT 3.73 2549 0 Normal
04/07/2026 12 PM PDT 3.73 2549 0 Normal
04/07/2026 01 PM PDT 3.73 2549 0 Normal
04/07/2026 02 PM PDT 3.73 2549 0 Normal
04/07/2026 03 PM PDT 3.73 2549 0 Normal
04/07/2026 04 PM PDT 3.73 2549 0 Normal
04/07/2026 05 PM PDT 3.73 2549 0 Normal
04/07/2026 06 PM PDT 3.73 2549 0 Normal
04/07/2026 07 PM PDT 3.73 2549 0 Normal
04/07/2026 08 PM PDT 3.73 2549 0 Normal
04/07/2026 09 PM PDT 3.73 2549 0 Normal
04/07/2026 10 PM PDT 3.73 2549 0 Normal
04/07/2026 11 PM PDT 3.73 2549 0 Normal
04/08/2026 12 AM PDT 3.73 2549 0 Normal
04/08/2026 01 AM PDT 3.73 2549 0 Normal
04/08/2026 02 AM PDT 3.73 2549 0 Normal
04/08/2026 03 AM PDT 3.73 2549 0 Normal
04/08/2026 04 AM PDT 3.72 2539 - Normal
04/08/2026 05 AM PDT 3.72 2539 0 Normal
04/08/2026 06 AM PDT 3.72 2539 0 Normal
04/08/2026 07 AM PDT 3.72 2539 0 Normal
04/08/2026 08 AM PDT 3.71 2528 - Normal
04/08/2026 09 AM PDT 3.71 2528 0 Normal
04/08/2026 10 AM PDT 3.71 2528 0 Normal
04/08/2026 11 AM PDT 3.70 2518 - Normal
04/08/2026 12 PM PDT 3.70 2518 0 Normal
04/08/2026 01 PM PDT 3.70 2518 0 Normal
04/08/2026 02 PM PDT 3.69 2508 - Normal
04/08/2026 03 PM PDT 3.69 2508 0 Normal
04/08/2026 04 PM PDT 3.69 2508 0 Normal
04/08/2026 05 PM PDT 3.69 2508 0 Normal
04/08/2026 06 PM PDT 3.69 2508 0 Normal
04/08/2026 07 PM PDT 3.69 2508 0 Normal
04/08/2026 08 PM PDT 3.69 2508 0 Normal
04/08/2026 09 PM PDT 3.69 2508 0 Normal
04/08/2026 10 PM PDT 3.69 2508 0 Normal
04/08/2026 11 PM PDT 3.69 2508 0 Normal
04/09/2026 12 AM PDT 3.70 2518 + Normal
04/09/2026 01 AM PDT 3.70 2518 0 Normal
04/09/2026 02 AM PDT 3.70 2518 0 Normal
04/09/2026 03 AM PDT 3.70 2518 0 Normal
04/09/2026 04 AM PDT 3.70 2518 0 Normal
04/09/2026 05 AM PDT 3.71 2528 + Normal
04/09/2026 06 AM PDT 3.71 2528 0 Normal
04/09/2026 07 AM PDT 3.70 2518 - Normal
04/09/2026 08 AM PDT 3.70 2518 0 Normal
04/09/2026 09 AM PDT 3.70 2518 0 Normal
04/09/2026 10 AM PDT 3.70 2518 0 Normal
04/09/2026 11 AM PDT 3.70 2518 0 Normal
04/09/2026 12 PM PDT 3.69 2508 - Normal
04/09/2026 01 PM PDT 3.69 2508 0 Normal
04/09/2026 02 PM PDT 3.69 2508 0 Normal
04/09/2026 03 PM PDT 3.69 2508 0 Normal
04/09/2026 04 PM PDT 3.70 2518 + Normal
04/09/2026 05 PM PDT 3.71 2528 + Normal
04/09/2026 06 PM PDT 3.72 2539 + Normal
04/09/2026 07 PM PDT 3.73 2549 + Normal
04/09/2026 08 PM PDT 3.76 2579 + Normal
04/09/2026 09 PM PDT 3.78 2600 + Normal
04/09/2026 10 PM PDT 3.81 2630 + Normal
04/09/2026 11 PM PDT 3.83 2651 + Normal
04/10/2026 12 AM PDT 3.87 2693 + Normal
04/10/2026 01 AM PDT 3.90 2724 + Normal
04/10/2026 02 AM PDT 3.93 2756 + Normal
04/10/2026 03 AM PDT 3.95 2777 + Normal
04/10/2026 04 AM PDT 3.96 2788 + Normal
04/10/2026 05 AM PDT 3.97 2798 + Normal
04/10/2026 06 AM PDT 3.98 2809 + Normal
04/10/2026 07 AM PDT 3.98 2809 0 Normal
04/10/2026 08 AM PDT 3.98 2809 0 Normal
04/10/2026 09 AM PDT 3.98 2809 0 Normal
04/10/2026 10 AM PDT 3.97 2798 - Normal
04/10/2026 11 AM PDT 3.97 2798 0 Normal
04/10/2026 12 PM PDT 3.97 2798 0 Normal
04/10/2026 01 PM PDT 3.97 2798 0 Normal
04/10/2026 02 PM PDT 3.96 2788 - Normal
04/10/2026 03 PM PDT 3.97 2798 + Normal
04/10/2026 04 PM PDT 3.97 2798 0 Normal
04/10/2026 05 PM PDT 3.98 2809 + Normal
04/10/2026 06 PM PDT 3.99 2820 + Normal
04/10/2026 07 PM PDT 4.00 2830 + Normal
04/10/2026 08 PM PDT 4.02 2852 + Normal
04/10/2026 09 PM PDT 4.03 2863 + Normal
04/10/2026 10 PM PDT 4.05 2884 + Normal
04/10/2026 11 PM PDT 4.06 2895 + Normal
04/11/2026 12 AM PDT 4.07 2906 + Normal
04/11/2026 01 AM PDT 4.08 2917 + Normal
04/11/2026 02 AM PDT 4.08 2917 0 Normal
04/11/2026 03 AM PDT 4.08 2917 0 Normal
04/11/2026 04 AM PDT 4.08 2917 0 Normal
04/11/2026 05 AM PDT 4.08 2917 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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