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: May 08 2026 at 8:13 AM PDTNext Issuance: May 09 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:  05/08/2026 at 08:14 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/04/2026 at 11:00 AM PDT
# Maximum Observed Stage:                       3.21 Feet
# Maximum Observed Flow:                        2052 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/08/2026 at 09:00 AM PDT
# Maximum Forecast Stage:                       3.06 Feet
# Maximum Forecast Flow:                        1920 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/03/2026 08 AM PDT            3.20           2043                        Normal
  05/03/2026 09 AM PDT            3.20           2043         0              Normal
  05/03/2026 10 AM PDT            3.21           2052         +              Normal
  05/03/2026 11 AM PDT            3.20           2043         -              Normal
  05/03/2026 12 PM PDT            3.20           2043         0              Normal
  05/03/2026 01 PM PDT            3.20           2043         0              Normal
  05/03/2026 02 PM PDT            3.20           2043         0              Normal
  05/03/2026 03 PM PDT            3.20           2043         0              Normal
  05/03/2026 04 PM PDT            3.20           2043         0              Normal
  05/03/2026 05 PM PDT            3.19           2035         -              Normal
  05/03/2026 06 PM PDT            3.19           2035         0              Normal
  05/03/2026 07 PM PDT            3.19           2035         0              Normal
  05/03/2026 08 PM PDT            3.19           2035         0              Normal
  05/03/2026 09 PM PDT            3.20           2043         +              Normal
  05/03/2026 10 PM PDT            3.20           2043         0              Normal
  05/03/2026 11 PM PDT            3.19           2035         -              Normal
  05/04/2026 12 AM PDT            3.20           2043         +              Normal
  05/04/2026 01 AM PDT            3.20           2043         0              Normal
  05/04/2026 02 AM PDT            3.19           2035         -              Normal
  05/04/2026 03 AM PDT            3.19           2035         0              Normal
  05/04/2026 04 AM PDT            3.20           2043         +              Normal
  05/04/2026 05 AM PDT            3.20           2043         0              Normal
  05/04/2026 06 AM PDT            3.20           2043         0              Normal
  05/04/2026 07 AM PDT            3.19           2035         -              Normal
  05/04/2026 08 AM PDT            3.19           2035         0              Normal
  05/04/2026 09 AM PDT            3.19           2035         0              Normal
  05/04/2026 10 AM PDT            3.19           2035         0              Normal
  05/04/2026 11 AM PDT            3.21           2052         +              Normal
  05/04/2026 12 PM PDT            3.20           2043         -              Normal
  05/04/2026 01 PM PDT            3.20           2043         0              Normal
  05/04/2026 02 PM PDT            3.20           2043         0              Normal
  05/04/2026 03 PM PDT            3.20           2043         0              Normal
  05/04/2026 04 PM PDT            3.20           2043         0              Normal
  05/04/2026 05 PM PDT            3.20           2043         0              Normal
  05/04/2026 06 PM PDT            3.20           2043         0              Normal
  05/04/2026 07 PM PDT            3.20           2043         0              Normal
  05/04/2026 08 PM PDT            3.20           2043         0              Normal
  05/04/2026 09 PM PDT            3.20           2043         0              Normal
  05/04/2026 10 PM PDT            3.20           2043         0              Normal
  05/04/2026 11 PM PDT            3.20           2043         0              Normal
  05/05/2026 12 AM PDT            3.20           2043         0              Normal
  05/05/2026 01 AM PDT            3.19           2035         -              Normal
  05/05/2026 02 AM PDT            3.19           2035         0              Normal
  05/05/2026 03 AM PDT            3.18           2026         -              Normal
  05/05/2026 04 AM PDT            3.19           2035         +              Normal
  05/05/2026 05 AM PDT            3.19           2035         0              Normal
  05/05/2026 06 AM PDT            3.18           2026         -              Normal
  05/05/2026 07 AM PDT            3.19           2035         +              Normal
  05/05/2026 08 AM PDT            3.19           2035         0              Normal
  05/05/2026 09 AM PDT            3.18           2026         -              Normal
  05/05/2026 10 AM PDT            3.18           2026         0              Normal
  05/05/2026 11 AM PDT            3.17           2017         -              Normal
  05/05/2026 12 PM PDT            3.17           2017         0              Normal
  05/05/2026 01 PM PDT            3.17           2017         0              Normal
  05/05/2026 02 PM PDT            3.17           2017         0              Normal
  05/05/2026 03 PM PDT            3.18           2026         +              Normal
  05/05/2026 04 PM PDT            3.18           2026         0              Normal
  05/05/2026 05 PM PDT            3.18           2026         0              Normal
  05/05/2026 06 PM PDT            3.17           2017         -              Normal
  05/05/2026 07 PM PDT            3.15           1999         -              Normal
  05/05/2026 08 PM PDT            3.15           1999         0              Normal
  05/05/2026 09 PM PDT            3.15           1999         0              Normal
  05/05/2026 10 PM PDT            3.15           1999         0              Normal
  05/05/2026 11 PM PDT            3.15           1999         0              Normal
  05/06/2026 12 AM PDT            3.14           1990         -              Normal
  05/06/2026 01 AM PDT            3.15           1999         +              Normal
  05/06/2026 02 AM PDT            3.14           1990         -              Normal
  05/06/2026 03 AM PDT            3.14           1990         0              Normal
  05/06/2026 04 AM PDT            3.13           1981         -              Normal
  05/06/2026 05 AM PDT            3.13           1981         0              Normal
  05/06/2026 06 AM PDT            3.13           1981         0              Normal
  05/06/2026 07 AM PDT            3.13           1981         0              Normal
  05/06/2026 08 AM PDT            3.12           1973         -              Normal
  05/06/2026 09 AM PDT            3.12           1973         0              Normal
  05/06/2026 10 AM PDT            3.13           1981         +              Normal
  05/06/2026 11 AM PDT            3.13           1981         0              Normal
  05/06/2026 12 PM PDT            3.13           1981         0              Normal
  05/06/2026 01 PM PDT            3.12           1973         -              Normal
  05/06/2026 02 PM PDT            3.13           1981         +              Normal
  05/06/2026 03 PM PDT            3.13           1981         0              Normal
  05/06/2026 04 PM PDT            3.12           1973         -              Normal
  05/06/2026 05 PM PDT            3.11           1964         -              Normal
  05/06/2026 06 PM PDT            3.12           1973         +              Normal
  05/06/2026 07 PM PDT            3.11           1964         -              Normal
  05/06/2026 08 PM PDT            3.11           1964         0              Normal
  05/06/2026 09 PM PDT            3.10           1955         -              Normal
  05/06/2026 10 PM PDT            3.09           1946         -              Normal
  05/06/2026 11 PM PDT            3.10           1955         +              Normal
  05/07/2026 12 AM PDT            3.09           1946         -              Normal
  05/07/2026 01 AM PDT            3.09           1946         0              Normal
  05/07/2026 02 AM PDT            3.08           1938         -              Normal
  05/07/2026 03 AM PDT            3.08           1938         0              Normal
  05/07/2026 04 AM PDT            3.09           1946         +              Normal
  05/07/2026 05 AM PDT            3.08           1938         -              Normal
  05/07/2026 06 AM PDT            3.09           1946         +              Normal
  05/07/2026 07 AM PDT            3.08           1938         -              Normal
  05/07/2026 08 AM PDT            3.08           1938         0              Normal
  05/07/2026 09 AM PDT            3.08           1938         0              Normal
  05/07/2026 10 AM PDT            3.08           1938         0              Normal
  05/07/2026 11 AM PDT            3.08           1938         0              Normal
  05/07/2026 12 PM PDT            3.09           1946         +              Normal
  05/07/2026 01 PM PDT            3.09           1946         0              Normal
  05/07/2026 02 PM PDT            3.09           1946         0              Normal
  05/07/2026 03 PM PDT            3.08           1938         -              Normal
  05/07/2026 04 PM PDT            3.08           1938         0              Normal
  05/07/2026 05 PM PDT            3.09           1946         +              Normal
  05/07/2026 06 PM PDT            3.08           1938         -              Normal
  05/07/2026 07 PM PDT            3.08           1938         0              Normal
  05/07/2026 08 PM PDT            3.08           1938         0              Normal
  05/07/2026 09 PM PDT            3.07           1929         -              Normal
  05/07/2026 10 PM PDT            3.07           1929         0              Normal
  05/07/2026 11 PM PDT            3.07           1929         0              Normal
  05/08/2026 12 AM PDT            3.06           1920         -              Normal
  05/08/2026 01 AM PDT            3.06           1920         0              Normal
  05/08/2026 02 AM PDT            3.07           1929         +              Normal
  05/08/2026 03 AM PDT            3.07           1929         0              Normal
  05/08/2026 04 AM PDT            3.07           1929         0              Normal
  05/08/2026 05 AM PDT            3.06           1920         -              Normal
  05/08/2026 06 AM PDT            3.06           1920         0              Normal
  05/08/2026 07 AM PDT            3.06           1920         0              Normal
  05/08/2026 08 AM PDT            3.06           1920         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/08/2026 09 AM PDT            3.06           1920                        Normal
  05/08/2026 10 AM PDT            3.06           1920         0              Normal
  05/08/2026 11 AM PDT            3.05           1912         -              Normal
  05/08/2026 12 PM PDT            3.05           1912         0              Normal
  05/08/2026 01 PM PDT            3.04           1903         -              Normal
  05/08/2026 02 PM PDT            3.04           1903         0              Normal
  05/08/2026 03 PM PDT            3.04           1903         0              Normal
  05/08/2026 04 PM PDT            3.04           1903         0              Normal
  05/08/2026 05 PM PDT            3.04           1903         0              Normal
  05/08/2026 06 PM PDT            3.03           1895         -              Normal
  05/08/2026 07 PM PDT            3.03           1895         0              Normal
  05/08/2026 08 PM PDT            3.03           1895         0              Normal
  05/08/2026 09 PM PDT            3.03           1895         0              Normal
  05/08/2026 10 PM PDT            3.02           1886         -              Normal
  05/08/2026 11 PM PDT            3.02           1886         0              Normal
  05/09/2026 12 AM PDT            3.02           1886         0              Normal
  05/09/2026 01 AM PDT            3.02           1886         0              Normal
  05/09/2026 02 AM PDT            3.02           1886         0              Normal
  05/09/2026 03 AM PDT            3.02           1886         0              Normal
  05/09/2026 04 AM PDT            3.02           1886         0              Normal
  05/09/2026 05 AM PDT            3.02           1886         0              Normal
  05/09/2026 06 AM PDT            3.02           1886         0              Normal
  05/09/2026 07 AM PDT            3.02           1886         0              Normal
  05/09/2026 08 AM PDT            3.02           1886         0              Normal
  05/09/2026 09 AM PDT            3.02           1886         0              Normal
  05/09/2026 10 AM PDT            3.02           1886         0              Normal
  05/09/2026 11 AM PDT            3.01           1877         -              Normal
  05/09/2026 12 PM PDT            3.01           1877         0              Normal
  05/09/2026 01 PM PDT            3.01           1877         0              Normal
  05/09/2026 02 PM PDT            3.01           1877         0              Normal
  05/09/2026 03 PM PDT            3.01           1877         0              Normal
  05/09/2026 04 PM PDT            3.01           1877         0              Normal
  05/09/2026 05 PM PDT            3.01           1877         0              Normal
  05/09/2026 06 PM PDT            3.01           1877         0              Normal
  05/09/2026 07 PM PDT            3.01           1877         0              Normal
  05/09/2026 08 PM PDT            3.01           1877         0              Normal
  05/09/2026 09 PM PDT            3.01           1877         0              Normal
  05/09/2026 10 PM PDT            3.01           1877         0              Normal
  05/09/2026 11 PM PDT            3.01           1877         0              Normal
  05/10/2026 12 AM PDT            3.01           1877         0              Normal
  05/10/2026 01 AM PDT            3.01           1877         0              Normal
  05/10/2026 02 AM PDT            3.01           1877         0              Normal
  05/10/2026 03 AM PDT            3.01           1877         0              Normal
  05/10/2026 04 AM PDT            3.01           1877         0              Normal
  05/10/2026 05 AM PDT            3.01           1877         0              Normal
  05/10/2026 06 AM PDT            3.01           1877         0              Normal
  05/10/2026 07 AM PDT            3.01           1877         0              Normal
  05/10/2026 08 AM PDT            3.01           1877         0              Normal
  05/10/2026 09 AM PDT            3.01           1877         0              Normal
  05/10/2026 10 AM PDT            3.01           1877         0              Normal
  05/10/2026 11 AM PDT            3.01           1877         0              Normal
  05/10/2026 12 PM PDT            3.01           1877         0              Normal
  05/10/2026 01 PM PDT            3.01           1877         0              Normal
  05/10/2026 02 PM PDT            3.01           1877         0              Normal
  05/10/2026 03 PM PDT            3.01           1877         0              Normal
  05/10/2026 04 PM PDT            3.01           1877         0              Normal
  05/10/2026 05 PM PDT            3.01           1877         0              Normal
  05/10/2026 06 PM PDT            3.01           1877         0              Normal
  05/10/2026 07 PM PDT            3.01           1877         0              Normal
  05/10/2026 08 PM PDT            3.01           1877         0              Normal
  05/10/2026 09 PM PDT            3.01           1877         0              Normal
  05/10/2026 10 PM PDT            3.01           1877         0              Normal
  05/10/2026 11 PM PDT            3.01           1877         0              Normal
  05/11/2026 12 AM PDT            3.01           1877         0              Normal
  05/11/2026 01 AM PDT            3.01           1877         0              Normal
  05/11/2026 02 AM PDT            3.01           1877         0              Normal
  05/11/2026 03 AM PDT            3.01           1877         0              Normal
  05/11/2026 04 AM PDT            3.01           1877         0              Normal
  05/11/2026 05 AM PDT            3.01           1877         0              Normal
  05/11/2026 06 AM PDT            3.01           1877         0              Normal
  05/11/2026 07 AM PDT            3.01           1877         0              Normal
  05/11/2026 08 AM PDT            3.00           1869         -              Normal
  05/11/2026 09 AM PDT            3.00           1869         0              Normal
  05/11/2026 10 AM PDT            3.00           1869         0              Normal
  05/11/2026 11 AM PDT            3.00           1869         0              Normal
  05/11/2026 12 PM PDT            3.00           1869         0              Normal
  05/11/2026 01 PM PDT            3.00           1869         0              Normal
  05/11/2026 02 PM PDT            3.00           1869         0              Normal
  05/11/2026 03 PM PDT            3.00           1869         0              Normal
  05/11/2026 04 PM PDT            3.00           1869         0              Normal
  05/11/2026 05 PM PDT            3.00           1869         0              Normal
  05/11/2026 06 PM PDT            3.00           1869         0              Normal
  05/11/2026 07 PM PDT            3.00           1869         0              Normal
  05/11/2026 08 PM PDT            3.00           1869         0              Normal
  05/11/2026 09 PM PDT            3.00           1869         0              Normal
  05/11/2026 10 PM PDT            3.00           1869         0              Normal
  05/11/2026 11 PM PDT            3.00           1869         0              Normal
  05/12/2026 12 AM PDT            3.00           1869         0              Normal
  05/12/2026 01 AM PDT            3.00           1869         0              Normal
  05/12/2026 02 AM PDT            3.00           1869         0              Normal
  05/12/2026 03 AM PDT            3.00           1869         0              Normal
  05/12/2026 04 AM PDT            3.00           1869         0              Normal
  05/12/2026 05 AM PDT            3.00           1869         0              Normal
  05/12/2026 06 AM PDT            3.00           1869         0              Normal
  05/12/2026 07 AM PDT            3.00           1869         0              Normal
  05/12/2026 08 AM PDT            3.00           1869         0              Normal
  05/12/2026 09 AM PDT            3.00           1869         0              Normal
  05/12/2026 10 AM PDT            3.00           1869         0              Normal
  05/12/2026 11 AM PDT            3.00           1869         0              Normal
  05/12/2026 12 PM PDT            3.00           1869         0              Normal
  05/12/2026 01 PM PDT            2.99           1860         -              Normal
  05/12/2026 02 PM PDT            2.99           1860         0              Normal
  05/12/2026 03 PM PDT            2.99           1860         0              Normal
  05/12/2026 04 PM PDT            2.99           1860         0              Normal
  05/12/2026 05 PM PDT            2.99           1860         0              Normal
  05/12/2026 06 PM PDT            2.99           1860         0              Normal
  05/12/2026 07 PM PDT            2.99           1860         0              Normal
  05/12/2026 08 PM PDT            2.99           1860         0              Normal
  05/12/2026 09 PM PDT            2.99           1860         0              Normal
  05/12/2026 10 PM PDT            2.99           1860         0              Normal
  05/12/2026 11 PM PDT            2.99           1860         0              Normal
  05/13/2026 12 AM PDT            2.99           1860         0              Normal
  05/13/2026 01 AM PDT            2.99           1860         0              Normal
  05/13/2026 02 AM PDT            2.99           1860         0              Normal
  05/13/2026 03 AM PDT            2.99           1860         0              Normal
  05/13/2026 04 AM PDT            2.99           1860         0              Normal
  05/13/2026 05 AM PDT            2.99           1860         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.