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

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KLAMATH RIVER - SEIAD VALLEY (SEIC1)
Latitude: 41.85º NLongitude: 123.23º WElevation: 1320 FeetForecast Type: Official Location
Location: Siskiyou County in CaliforniaBulletin Group: North CoastRiver Group: Klamath
Issuance Time: Mar 25 2026 at 12:54 PM PDTNext Issuance: Mar 26 2026 at 9:00 AM PDT
Action/Monitor: 13.0 FeetMinor Flood: 15.0 FeetModerate Flood: 20.0 FeetMajor Flood: 28.0 Feet


# Tabular Observed and Forecast Hydrograph Information
#
# Location: Klamath River - Seiad Valley (SEIC1)
#
# File Generation Time:  03/25/2026 at 12:54 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  03/21/2026 at 11:00 PM PDT
# Maximum Observed Stage:                       3.67 Feet
# Maximum Observed Flow:                        2488 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/28/2026 at 06:00 AM PDT
# Maximum Forecast Stage:                       3.79 Feet
# Maximum Forecast Flow:                        2610 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  03/20/2026 12 PM PDT            3.64           2458                        Normal
  03/20/2026 01 PM PDT            3.65           2468         +              Normal
  03/20/2026 02 PM PDT            3.64           2458         -              Normal
  03/20/2026 03 PM PDT            3.64           2458         0              Normal
  03/20/2026 04 PM PDT            3.65           2468         +              Normal
  03/20/2026 05 PM PDT            3.65           2468         0              Normal
  03/20/2026 06 PM PDT            3.64           2458         -              Normal
  03/20/2026 07 PM PDT            3.65           2468         +              Normal
  03/20/2026 08 PM PDT            3.64           2458         -              Normal
  03/20/2026 09 PM PDT            3.65           2468         +              Normal
  03/20/2026 10 PM PDT            3.65           2468         0              Normal
  03/20/2026 11 PM PDT            3.64           2458         -              Normal
  03/21/2026 12 AM PDT            3.64           2458         0              Normal
  03/21/2026 01 AM PDT            3.64           2458         0              Normal
  03/21/2026 02 AM PDT            3.64           2458         0              Normal
  03/21/2026 03 AM PDT            3.64           2458         0              Normal
  03/21/2026 04 AM PDT            3.63           2449         -              Normal
  03/21/2026 05 AM PDT            3.63           2449         0              Normal
  03/21/2026 06 AM PDT            3.64           2458         +              Normal
  03/21/2026 07 AM PDT            3.64           2458         0              Normal
  03/21/2026 08 AM PDT            3.63           2449         -              Normal
  03/21/2026 09 AM PDT            3.63           2449         0              Normal
  03/21/2026 10 AM PDT            3.63           2449         0              Normal
  03/21/2026 11 AM PDT            3.63           2449         0              Normal
  03/21/2026 12 PM PDT            3.63           2449         0              Normal
  03/21/2026 01 PM PDT            3.63           2449         0              Normal
  03/21/2026 02 PM PDT            3.65           2468         +              Normal
  03/21/2026 03 PM PDT            3.66           2478         +              Normal
  03/21/2026 04 PM PDT            3.67           2488         +              Normal
  03/21/2026 05 PM PDT            3.67           2488         0              Normal
  03/21/2026 06 PM PDT            3.67           2488         0              Normal
  03/21/2026 07 PM PDT            3.67           2488         0              Normal
  03/21/2026 08 PM PDT            3.67           2488         0              Normal
  03/21/2026 09 PM PDT            3.67           2488         0              Normal
  03/21/2026 10 PM PDT            3.67           2488         0              Normal
  03/21/2026 11 PM PDT            3.67           2488         0              Normal
  03/22/2026 12 AM PDT            3.66           2478         -              Normal
  03/22/2026 01 AM PDT            3.66           2478         0              Normal
  03/22/2026 02 AM PDT            3.66           2478         0              Normal
  03/22/2026 03 AM PDT            3.66           2478         0              Normal
  03/22/2026 04 AM PDT            3.66           2478         0              Normal
  03/22/2026 05 AM PDT            3.65           2468         -              Normal
  03/22/2026 06 AM PDT            3.65           2468         0              Normal
  03/22/2026 07 AM PDT            3.65           2468         0              Normal
  03/22/2026 08 AM PDT            3.65           2468         0              Normal
  03/22/2026 09 AM PDT            3.65           2468         0              Normal
  03/22/2026 10 AM PDT            3.65           2468         0              Normal
  03/22/2026 11 AM PDT            3.64           2458         -              Normal
  03/22/2026 12 PM PDT            3.63           2449         -              Normal
  03/22/2026 01 PM PDT            3.63           2449         0              Normal
  03/22/2026 02 PM PDT            3.64           2458         +              Normal
  03/22/2026 03 PM PDT            3.65           2468         +              Normal
  03/22/2026 04 PM PDT            3.65           2468         0              Normal
  03/22/2026 05 PM PDT            3.64           2458         -              Normal
  03/22/2026 06 PM PDT            3.64           2458         0              Normal
  03/22/2026 07 PM PDT            3.64           2458         0              Normal
  03/22/2026 08 PM PDT            3.64           2458         0              Normal
  03/22/2026 09 PM PDT            3.64           2458         0              Normal
  03/22/2026 10 PM PDT            3.65           2468         +              Normal
  03/22/2026 11 PM PDT            3.64           2458         -              Normal
  03/23/2026 12 AM PDT            3.63           2449         -              Normal
  03/23/2026 01 AM PDT            3.63           2449         0              Normal
  03/23/2026 02 AM PDT            3.63           2449         0              Normal
  03/23/2026 03 AM PDT            3.63           2449         0              Normal
  03/23/2026 04 AM PDT            3.63           2449         0              Normal
  03/23/2026 05 AM PDT            3.63           2449         0              Normal
  03/23/2026 06 AM PDT            3.62           2439         -              Normal
  03/23/2026 07 AM PDT            3.63           2449         +              Normal
  03/23/2026 08 AM PDT            3.62           2439         -              Normal
  03/23/2026 09 AM PDT            3.63           2449         +              Normal
  03/23/2026 10 AM PDT            3.61           2429         -              Normal
  03/23/2026 11 AM PDT            3.62           2439         +              Normal
  03/23/2026 12 PM PDT            3.62           2439         0              Normal
  03/23/2026 01 PM PDT            3.62           2439         0              Normal
  03/23/2026 02 PM PDT            3.62           2439         0              Normal
  03/23/2026 03 PM PDT            3.61           2429         -              Normal
  03/23/2026 04 PM PDT            3.62           2439         +              Normal
  03/23/2026 05 PM PDT            3.60           2419         -              Normal
  03/23/2026 06 PM PDT            3.61           2429         +              Normal
  03/23/2026 07 PM PDT            3.60           2419         -              Normal
  03/23/2026 08 PM PDT            3.60           2419         0              Normal
  03/23/2026 09 PM PDT            3.60           2419         0              Normal
  03/23/2026 10 PM PDT            3.60           2419         0              Normal
  03/23/2026 11 PM PDT            3.59           2409         -              Normal
  03/24/2026 12 AM PDT            3.58           2399         -              Normal
  03/24/2026 01 AM PDT            3.58           2399         0              Normal
  03/24/2026 02 AM PDT            3.59           2409         +              Normal
  03/24/2026 03 AM PDT            3.59           2409         0              Normal
  03/24/2026 04 AM PDT            3.58           2399         -              Normal
  03/24/2026 05 AM PDT            3.58           2399         0              Normal
  03/24/2026 06 AM PDT            3.59           2409         +              Normal
  03/24/2026 07 AM PDT            3.58           2399         -              Normal
  03/24/2026 08 AM PDT            3.58           2399         0              Normal
  03/24/2026 09 AM PDT            3.58           2399         0              Normal
  03/24/2026 10 AM PDT            3.58           2399         0              Normal
  03/24/2026 11 AM PDT            3.58           2399         0              Normal
  03/24/2026 12 PM PDT            3.57           2390         -              Normal
  03/24/2026 01 PM PDT            3.57           2390         0              Normal
  03/24/2026 02 PM PDT            3.56           2380         -              Normal
  03/24/2026 03 PM PDT            3.57           2390         +              Normal
  03/24/2026 04 PM PDT            3.55           2370         -              Normal
  03/24/2026 05 PM PDT            3.57           2390         +              Normal
  03/24/2026 06 PM PDT            3.56           2380         -              Normal
  03/24/2026 07 PM PDT            3.56           2380         0              Normal
  03/24/2026 08 PM PDT            3.56           2380         0              Normal
  03/24/2026 09 PM PDT            3.55           2370         -              Normal
  03/24/2026 10 PM PDT            3.54           2360         -              Normal
  03/24/2026 11 PM PDT            3.54           2360         0              Normal
  03/25/2026 12 AM PDT            3.54           2360         0              Normal
  03/25/2026 01 AM PDT            3.54           2360         0              Normal
  03/25/2026 02 AM PDT            3.54           2360         0              Normal
  03/25/2026 03 AM PDT            3.54           2360         0              Normal
  03/25/2026 04 AM PDT            3.53           2351         -              Normal
  03/25/2026 05 AM PDT            3.53           2351         0              Normal
  03/25/2026 06 AM PDT            3.54           2360         +              Normal
  03/25/2026 07 AM PDT            3.53           2351         -              Normal
  03/25/2026 08 AM PDT            3.54           2360         +              Normal
  03/25/2026 09 AM PDT            3.54           2360         0              Normal
  03/25/2026 10 AM PDT            3.54           2360         0              Normal
  03/25/2026 11 AM PDT            3.52           2341         -              Normal
  03/25/2026 12 PM PDT            3.53           2351         +              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/25/2026 01 PM PDT            3.53           2351                        Normal
  03/25/2026 02 PM PDT            3.53           2351         0              Normal
  03/25/2026 03 PM PDT            3.53           2351         0              Normal
  03/25/2026 04 PM PDT            3.53           2351         0              Normal
  03/25/2026 05 PM PDT            3.53           2351         0              Normal
  03/25/2026 06 PM PDT            3.53           2351         0              Normal
  03/25/2026 07 PM PDT            3.53           2351         0              Normal
  03/25/2026 08 PM PDT            3.53           2351         0              Normal
  03/25/2026 09 PM PDT            3.54           2360         +              Normal
  03/25/2026 10 PM PDT            3.54           2360         0              Normal
  03/25/2026 11 PM PDT            3.54           2360         0              Normal
  03/26/2026 12 AM PDT            3.54           2360         0              Normal
  03/26/2026 01 AM PDT            3.54           2360         0              Normal
  03/26/2026 02 AM PDT            3.54           2360         0              Normal
  03/26/2026 03 AM PDT            3.54           2360         0              Normal
  03/26/2026 04 AM PDT            3.54           2360         0              Normal
  03/26/2026 05 AM PDT            3.54           2360         0              Normal
  03/26/2026 06 AM PDT            3.54           2360         0              Normal
  03/26/2026 07 AM PDT            3.54           2360         0              Normal
  03/26/2026 08 AM PDT            3.54           2360         0              Normal
  03/26/2026 09 AM PDT            3.54           2360         0              Normal
  03/26/2026 10 AM PDT            3.54           2360         0              Normal
  03/26/2026 11 AM PDT            3.54           2360         0              Normal
  03/26/2026 12 PM PDT            3.53           2351         -              Normal
  03/26/2026 01 PM PDT            3.53           2351         0              Normal
  03/26/2026 02 PM PDT            3.53           2351         0              Normal
  03/26/2026 03 PM PDT            3.54           2360         +              Normal
  03/26/2026 04 PM PDT            3.54           2360         0              Normal
  03/26/2026 05 PM PDT            3.54           2360         0              Normal
  03/26/2026 06 PM PDT            3.55           2370         +              Normal
  03/26/2026 07 PM PDT            3.55           2370         0              Normal
  03/26/2026 08 PM PDT            3.56           2380         +              Normal
  03/26/2026 09 PM PDT            3.57           2390         +              Normal
  03/26/2026 10 PM PDT            3.57           2390         0              Normal
  03/26/2026 11 PM PDT            3.58           2399         +              Normal
  03/27/2026 12 AM PDT            3.59           2409         +              Normal
  03/27/2026 01 AM PDT            3.60           2419         +              Normal
  03/27/2026 02 AM PDT            3.61           2429         +              Normal
  03/27/2026 03 AM PDT            3.62           2439         +              Normal
  03/27/2026 04 AM PDT            3.63           2449         +              Normal
  03/27/2026 05 AM PDT            3.64           2458         +              Normal
  03/27/2026 06 AM PDT            3.65           2468         +              Normal
  03/27/2026 07 AM PDT            3.66           2478         +              Normal
  03/27/2026 08 AM PDT            3.67           2488         +              Normal
  03/27/2026 09 AM PDT            3.68           2498         +              Normal
  03/27/2026 10 AM PDT            3.68           2498         0              Normal
  03/27/2026 11 AM PDT            3.69           2508         +              Normal
  03/27/2026 12 PM PDT            3.69           2508         0              Normal
  03/27/2026 01 PM PDT            3.70           2518         +              Normal
  03/27/2026 02 PM PDT            3.70           2518         0              Normal
  03/27/2026 03 PM PDT            3.71           2528         +              Normal
  03/27/2026 04 PM PDT            3.71           2528         0              Normal
  03/27/2026 05 PM PDT            3.72           2539         +              Normal
  03/27/2026 06 PM PDT            3.72           2539         0              Normal
  03/27/2026 07 PM PDT            3.73           2549         +              Normal
  03/27/2026 08 PM PDT            3.73           2549         0              Normal
  03/27/2026 09 PM PDT            3.74           2559         +              Normal
  03/27/2026 10 PM PDT            3.75           2569         +              Normal
  03/27/2026 11 PM PDT            3.75           2569         0              Normal
  03/28/2026 12 AM PDT            3.76           2579         +              Normal
  03/28/2026 01 AM PDT            3.77           2589         +              Normal
  03/28/2026 02 AM PDT            3.77           2589         0              Normal
  03/28/2026 03 AM PDT            3.78           2600         +              Normal
  03/28/2026 04 AM PDT            3.78           2600         0              Normal
  03/28/2026 05 AM PDT            3.78           2600         0              Normal
  03/28/2026 06 AM PDT            3.79           2610         +              Normal
  03/28/2026 07 AM PDT            3.79           2610         0              Normal
  03/28/2026 08 AM PDT            3.79           2610         0              Normal
  03/28/2026 09 AM PDT            3.79           2610         0              Normal
  03/28/2026 10 AM PDT            3.79           2610         0              Normal
  03/28/2026 11 AM PDT            3.79           2610         0              Normal
  03/28/2026 12 PM PDT            3.79           2610         0              Normal
  03/28/2026 01 PM PDT            3.79           2610         0              Normal
  03/28/2026 02 PM PDT            3.79           2610         0              Normal
  03/28/2026 03 PM PDT            3.79           2610         0              Normal
  03/28/2026 04 PM PDT            3.79           2610         0              Normal
  03/28/2026 05 PM PDT            3.79           2610         0              Normal
  03/28/2026 06 PM PDT            3.79           2610         0              Normal
  03/28/2026 07 PM PDT            3.79           2610         0              Normal
  03/28/2026 08 PM PDT            3.79           2610         0              Normal
  03/28/2026 09 PM PDT            3.79           2610         0              Normal
  03/28/2026 10 PM PDT            3.79           2610         0              Normal
  03/28/2026 11 PM PDT            3.79           2610         0              Normal
  03/29/2026 12 AM PDT            3.79           2610         0              Normal
  03/29/2026 01 AM PDT            3.79           2610         0              Normal
  03/29/2026 02 AM PDT            3.79           2610         0              Normal
  03/29/2026 03 AM PDT            3.79           2610         0              Normal
  03/29/2026 04 AM PDT            3.79           2610         0              Normal
  03/29/2026 05 AM PDT            3.79           2610         0              Normal
  03/29/2026 06 AM PDT            3.79           2610         0              Normal
  03/29/2026 07 AM PDT            3.79           2610         0              Normal
  03/29/2026 08 AM PDT            3.79           2610         0              Normal
  03/29/2026 09 AM PDT            3.78           2600         -              Normal
  03/29/2026 10 AM PDT            3.78           2600         0              Normal
  03/29/2026 11 AM PDT            3.78           2600         0              Normal
  03/29/2026 12 PM PDT            3.78           2600         0              Normal
  03/29/2026 01 PM PDT            3.77           2589         -              Normal
  03/29/2026 02 PM PDT            3.77           2589         0              Normal
  03/29/2026 03 PM PDT            3.77           2589         0              Normal
  03/29/2026 04 PM PDT            3.77           2589         0              Normal
  03/29/2026 05 PM PDT            3.76           2579         -              Normal
  03/29/2026 06 PM PDT            3.76           2579         0              Normal
  03/29/2026 07 PM PDT            3.76           2579         0              Normal
  03/29/2026 08 PM PDT            3.76           2579         0              Normal
  03/29/2026 09 PM PDT            3.76           2579         0              Normal
  03/29/2026 10 PM PDT            3.76           2579         0              Normal
  03/29/2026 11 PM PDT            3.76           2579         0              Normal
  03/30/2026 12 AM PDT            3.76           2579         0              Normal
  03/30/2026 01 AM PDT            3.76           2579         0              Normal
  03/30/2026 02 AM PDT            3.76           2579         0              Normal
  03/30/2026 03 AM PDT            3.76           2579         0              Normal
  03/30/2026 04 AM PDT            3.76           2579         0              Normal
  03/30/2026 05 AM PDT            3.76           2579         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.