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 10 2026 at 12:44 PM PDTNext Issuance: Mar 11 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:  03/10/2026 at 12:44 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  03/05/2026 at 01:00 PM PST
# Maximum Observed Stage:                       4.93 Feet
# Maximum Observed Flow:                        3929 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/10/2026 at 01:00 PM PDT
# Maximum Forecast Stage:                       4.25 Feet
# Maximum Forecast Flow:                        3106 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  03/05/2026 11 AM PST            4.92           3916                        Normal
  03/05/2026 12 PM PST            4.93           3929         +              Normal
  03/05/2026 01 PM PST            4.93           3929         0              Normal
  03/05/2026 02 PM PST            4.91           3903         -              Normal
  03/05/2026 03 PM PST            4.92           3916         +              Normal
  03/05/2026 04 PM PST            4.92           3916         0              Normal
  03/05/2026 05 PM PST            4.92           3916         0              Normal
  03/05/2026 06 PM PST            4.91           3903         -              Normal
  03/05/2026 07 PM PST            4.89           3878         -              Normal
  03/05/2026 08 PM PST            4.88           3865         -              Normal
  03/05/2026 09 PM PST            4.88           3865         0              Normal
  03/05/2026 10 PM PST            4.87           3852         -              Normal
  03/05/2026 11 PM PST            4.86           3839         -              Normal
  03/06/2026 12 AM PST            4.85           3827         -              Normal
  03/06/2026 01 AM PST            4.83           3801         -              Normal
  03/06/2026 02 AM PST            4.83           3801         0              Normal
  03/06/2026 03 AM PST            4.83           3801         0              Normal
  03/06/2026 04 AM PST            4.81           3776         -              Normal
  03/06/2026 05 AM PST            4.81           3776         0              Normal
  03/06/2026 06 AM PST            4.80           3763         -              Normal
  03/06/2026 07 AM PST            4.79           3751         -              Normal
  03/06/2026 08 AM PST            4.78           3738         -              Normal
  03/06/2026 09 AM PST            4.76           3713         -              Normal
  03/06/2026 10 AM PST            4.75           3701         -              Normal
  03/06/2026 11 AM PST            4.74           3688         -              Normal
  03/06/2026 12 PM PST            4.72           3663         -              Normal
  03/06/2026 01 PM PST            4.73           3676         +              Normal
  03/06/2026 02 PM PST            4.74           3688         +              Normal
  03/06/2026 03 PM PST            4.72           3663         -              Normal
  03/06/2026 04 PM PST            4.73           3676         +              Normal
  03/06/2026 05 PM PST            4.72           3663         -              Normal
  03/06/2026 06 PM PST            4.70           3639         -              Normal
  03/06/2026 07 PM PST            4.69           3626         -              Normal
  03/06/2026 08 PM PST            4.67           3602         -              Normal
  03/06/2026 09 PM PST            4.67           3602         0              Normal
  03/06/2026 10 PM PST            4.66           3589         -              Normal
  03/06/2026 11 PM PST            4.66           3589         0              Normal
  03/07/2026 12 AM PST            4.64           3565         -              Normal
  03/07/2026 01 AM PST            4.64           3565         0              Normal
  03/07/2026 02 AM PST            4.63           3553         -              Normal
  03/07/2026 03 AM PST            4.63           3553         0              Normal
  03/07/2026 04 AM PST            4.63           3553         0              Normal
  03/07/2026 05 AM PST            4.61           3528         -              Normal
  03/07/2026 06 AM PST            4.60           3516         -              Normal
  03/07/2026 07 AM PST            4.59           3504         -              Normal
  03/07/2026 08 AM PST            4.59           3504         0              Normal
  03/07/2026 09 AM PST            4.60           3516         +              Normal
  03/07/2026 10 AM PST            4.59           3504         -              Normal
  03/07/2026 11 AM PST            4.58           3492         -              Normal
  03/07/2026 12 PM PST            4.58           3492         0              Normal
  03/07/2026 01 PM PST            4.57           3480         -              Normal
  03/07/2026 02 PM PST            4.57           3480         0              Normal
  03/07/2026 03 PM PST            4.58           3492         +              Normal
  03/07/2026 04 PM PST            4.59           3504         +              Normal
  03/07/2026 05 PM PST            4.56           3468         -              Normal
  03/07/2026 06 PM PST            4.54           3444         -              Normal
  03/07/2026 07 PM PST            4.53           3432         -              Normal
  03/07/2026 08 PM PST            4.53           3432         0              Normal
  03/07/2026 09 PM PST            4.53           3432         0              Normal
  03/07/2026 10 PM PST            4.52           3420         -              Normal
  03/07/2026 11 PM PST            4.52           3420         0              Normal
  03/08/2026 12 AM PST            4.50           3396         -              Normal
  03/08/2026 01 AM PST            4.51           3408         +              Normal
  03/08/2026 03 AM PDT            4.50           3396         -              Normal
  03/08/2026 04 AM PDT            4.51           3408         +              Normal
  03/08/2026 05 AM PDT            4.49           3384         -              Normal
  03/08/2026 06 AM PDT            4.49           3384         0              Normal
  03/08/2026 07 AM PDT            4.48           3372         -              Normal
  03/08/2026 08 AM PDT            4.48           3372         0              Normal
  03/08/2026 09 AM PDT            4.47           3360         -              Normal
  03/08/2026 10 AM PDT            4.46           3349         -              Normal
  03/08/2026 11 AM PDT            4.46           3349         0              Normal
  03/08/2026 12 PM PDT            4.46           3349         0              Normal
  03/08/2026 01 PM PDT            4.46           3349         0              Normal
  03/08/2026 02 PM PDT            4.47           3360         +              Normal
  03/08/2026 03 PM PDT            4.46           3349         -              Normal
  03/08/2026 04 PM PDT            4.47           3360         +              Normal
  03/08/2026 05 PM PDT            4.48           3372         +              Normal
  03/08/2026 06 PM PDT            4.45           3337         -              Normal
  03/08/2026 07 PM PDT            4.44           3325         -              Normal
  03/08/2026 08 PM PDT            4.43           3313         -              Normal
  03/08/2026 09 PM PDT            4.42           3302         -              Normal
  03/08/2026 10 PM PDT            4.42           3302         0              Normal
  03/08/2026 11 PM PDT            4.42           3302         0              Normal
  03/09/2026 12 AM PDT            4.42           3302         0              Normal
  03/09/2026 01 AM PDT            4.41           3290         -              Normal
  03/09/2026 02 AM PDT            4.40           3278         -              Normal
  03/09/2026 03 AM PDT            4.41           3290         +              Normal
  03/09/2026 04 AM PDT            4.40           3278         -              Normal
  03/09/2026 05 AM PDT            4.40           3278         0              Normal
  03/09/2026 06 AM PDT            4.40           3278         0              Normal
  03/09/2026 07 AM PDT            4.40           3278         0              Normal
  03/09/2026 08 AM PDT            4.38           3255         -              Normal
  03/09/2026 09 AM PDT            4.38           3255         0              Normal
  03/09/2026 10 AM PDT            4.38           3255         0              Normal
  03/09/2026 11 AM PDT            4.37           3243         -              Normal
  03/09/2026 12 PM PDT            4.37           3243         0              Normal
  03/09/2026 01 PM PDT            4.38           3255         +              Normal
  03/09/2026 02 PM PDT            4.36           3232         -              Normal
  03/09/2026 03 PM PDT            4.38           3255         +              Normal
  03/09/2026 04 PM PDT            4.38           3255         0              Normal
  03/09/2026 05 PM PDT            4.40           3278         +              Normal
  03/09/2026 06 PM PDT            4.37           3243         -              Normal
  03/09/2026 07 PM PDT            4.34           3209         -              Normal
  03/09/2026 08 PM PDT            4.34           3209         0              Normal
  03/09/2026 09 PM PDT            4.34           3209         0              Normal
  03/09/2026 10 PM PDT            4.33           3197         -              Normal
  03/09/2026 11 PM PDT            4.33           3197         0              Normal
  03/10/2026 12 AM PDT            4.31           3174         -              Normal
  03/10/2026 01 AM PDT            4.31           3174         0              Normal
  03/10/2026 02 AM PDT            4.30           3163         -              Normal
  03/10/2026 03 AM PDT            4.30           3163         0              Normal
  03/10/2026 04 AM PDT            4.31           3174         +              Normal
  03/10/2026 05 AM PDT            4.30           3163         -              Normal
  03/10/2026 06 AM PDT            4.29           3151         -              Normal
  03/10/2026 07 AM PDT            4.29           3151         0              Normal
  03/10/2026 08 AM PDT            4.28           3140         -              Normal
  03/10/2026 09 AM PDT            4.27           3129         -              Normal
  03/10/2026 10 AM PDT            4.28           3140         +              Normal
  03/10/2026 11 AM PDT            4.26           3117         -              Normal
  03/10/2026 12 PM PDT            4.26           3117         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/10/2026 01 PM PDT            4.25           3106                        Normal
  03/10/2026 02 PM PDT            4.24           3095         -              Normal
  03/10/2026 03 PM PDT            4.23           3083         -              Normal
  03/10/2026 04 PM PDT            4.22           3072         -              Normal
  03/10/2026 05 PM PDT            4.21           3061         -              Normal
  03/10/2026 06 PM PDT            4.21           3061         0              Normal
  03/10/2026 07 PM PDT            4.20           3050         -              Normal
  03/10/2026 08 PM PDT            4.20           3050         0              Normal
  03/10/2026 09 PM PDT            4.19           3038         -              Normal
  03/10/2026 10 PM PDT            4.18           3027         -              Normal
  03/10/2026 11 PM PDT            4.18           3027         0              Normal
  03/11/2026 12 AM PDT            4.17           3016         -              Normal
  03/11/2026 01 AM PDT            4.16           3005         -              Normal
  03/11/2026 02 AM PDT            4.16           3005         0              Normal
  03/11/2026 03 AM PDT            4.15           2994         -              Normal
  03/11/2026 04 AM PDT            4.14           2983         -              Normal
  03/11/2026 05 AM PDT            4.13           2972         -              Normal
  03/11/2026 06 AM PDT            4.13           2972         0              Normal
  03/11/2026 07 AM PDT            4.12           2961         -              Normal
  03/11/2026 08 AM PDT            4.11           2950         -              Normal
  03/11/2026 09 AM PDT            4.11           2950         0              Normal
  03/11/2026 10 AM PDT            4.10           2939         -              Normal
  03/11/2026 11 AM PDT            4.09           2928         -              Normal
  03/11/2026 12 PM PDT            4.08           2917         -              Normal
  03/11/2026 01 PM PDT            4.08           2917         0              Normal
  03/11/2026 02 PM PDT            4.07           2906         -              Normal
  03/11/2026 03 PM PDT            4.06           2895         -              Normal
  03/11/2026 04 PM PDT            4.06           2895         0              Normal
  03/11/2026 05 PM PDT            4.05           2884         -              Normal
  03/11/2026 06 PM PDT            4.04           2873         -              Normal
  03/11/2026 07 PM PDT            4.04           2873         0              Normal
  03/11/2026 08 PM PDT            4.03           2863         -              Normal
  03/11/2026 09 PM PDT            4.03           2863         0              Normal
  03/11/2026 10 PM PDT            4.02           2852         -              Normal
  03/11/2026 11 PM PDT            4.02           2852         0              Normal
  03/12/2026 12 AM PDT            4.01           2841         -              Normal
  03/12/2026 01 AM PDT            4.01           2841         0              Normal
  03/12/2026 02 AM PDT            4.01           2841         0              Normal
  03/12/2026 03 AM PDT            4.01           2841         0              Normal
  03/12/2026 04 AM PDT            4.01           2841         0              Normal
  03/12/2026 05 AM PDT            4.01           2841         0              Normal
  03/12/2026 06 AM PDT            4.00           2830         -              Normal
  03/12/2026 07 AM PDT            4.00           2830         0              Normal
  03/12/2026 08 AM PDT            4.00           2830         0              Normal
  03/12/2026 09 AM PDT            4.00           2830         0              Normal
  03/12/2026 10 AM PDT            4.00           2830         0              Normal
  03/12/2026 11 AM PDT            4.00           2830         0              Normal
  03/12/2026 12 PM PDT            4.00           2830         0              Normal
  03/12/2026 01 PM PDT            4.00           2830         0              Normal
  03/12/2026 02 PM PDT            4.00           2830         0              Normal
  03/12/2026 03 PM PDT            3.99           2820         -              Normal
  03/12/2026 04 PM PDT            3.99           2820         0              Normal
  03/12/2026 05 PM PDT            3.99           2820         0              Normal
  03/12/2026 06 PM PDT            3.99           2820         0              Normal
  03/12/2026 07 PM PDT            3.99           2820         0              Normal
  03/12/2026 08 PM PDT            3.99           2820         0              Normal
  03/12/2026 09 PM PDT            4.00           2830         +              Normal
  03/12/2026 10 PM PDT            4.00           2830         0              Normal
  03/12/2026 11 PM PDT            4.00           2830         0              Normal
  03/13/2026 12 AM PDT            4.01           2841         +              Normal
  03/13/2026 01 AM PDT            4.01           2841         0              Normal
  03/13/2026 02 AM PDT            4.02           2852         +              Normal
  03/13/2026 03 AM PDT            4.03           2863         +              Normal
  03/13/2026 04 AM PDT            4.03           2863         0              Normal
  03/13/2026 05 AM PDT            4.03           2863         0              Normal
  03/13/2026 06 AM PDT            4.04           2873         +              Normal
  03/13/2026 07 AM PDT            4.04           2873         0              Normal
  03/13/2026 08 AM PDT            4.04           2873         0              Normal
  03/13/2026 09 AM PDT            4.04           2873         0              Normal
  03/13/2026 10 AM PDT            4.04           2873         0              Normal
  03/13/2026 11 AM PDT            4.04           2873         0              Normal
  03/13/2026 12 PM PDT            4.04           2873         0              Normal
  03/13/2026 01 PM PDT            4.04           2873         0              Normal
  03/13/2026 02 PM PDT            4.04           2873         0              Normal
  03/13/2026 03 PM PDT            4.03           2863         -              Normal
  03/13/2026 04 PM PDT            4.03           2863         0              Normal
  03/13/2026 05 PM PDT            4.03           2863         0              Normal
  03/13/2026 06 PM PDT            4.03           2863         0              Normal
  03/13/2026 07 PM PDT            4.03           2863         0              Normal
  03/13/2026 08 PM PDT            4.03           2863         0              Normal
  03/13/2026 09 PM PDT            4.04           2873         +              Normal
  03/13/2026 10 PM PDT            4.04           2873         0              Normal
  03/13/2026 11 PM PDT            4.04           2873         0              Normal
  03/14/2026 12 AM PDT            4.05           2884         +              Normal
  03/14/2026 01 AM PDT            4.05           2884         0              Normal
  03/14/2026 02 AM PDT            4.05           2884         0              Normal
  03/14/2026 03 AM PDT            4.06           2895         +              Normal
  03/14/2026 04 AM PDT            4.06           2895         0              Normal
  03/14/2026 05 AM PDT            4.06           2895         0              Normal
  03/14/2026 06 AM PDT            4.06           2895         0              Normal
  03/14/2026 07 AM PDT            4.06           2895         0              Normal
  03/14/2026 08 AM PDT            4.06           2895         0              Normal
  03/14/2026 09 AM PDT            4.06           2895         0              Normal
  03/14/2026 10 AM PDT            4.06           2895         0              Normal
  03/14/2026 11 AM PDT            4.06           2895         0              Normal
  03/14/2026 12 PM PDT            4.06           2895         0              Normal
  03/14/2026 01 PM PDT            4.06           2895         0              Normal
  03/14/2026 02 PM PDT            4.06           2895         0              Normal
  03/14/2026 03 PM PDT            4.06           2895         0              Normal
  03/14/2026 04 PM PDT            4.06           2895         0              Normal
  03/14/2026 05 PM PDT            4.06           2895         0              Normal
  03/14/2026 06 PM PDT            4.06           2895         0              Normal
  03/14/2026 07 PM PDT            4.06           2895         0              Normal
  03/14/2026 08 PM PDT            4.06           2895         0              Normal
  03/14/2026 09 PM PDT            4.06           2895         0              Normal
  03/14/2026 10 PM PDT            4.06           2895         0              Normal
  03/14/2026 11 PM PDT            4.06           2895         0              Normal
  03/15/2026 12 AM PDT            4.06           2895         0              Normal
  03/15/2026 01 AM PDT            4.06           2895         0              Normal
  03/15/2026 02 AM PDT            4.06           2895         0              Normal
  03/15/2026 03 AM PDT            4.06           2895         0              Normal
  03/15/2026 04 AM PDT            4.06           2895         0              Normal
  03/15/2026 05 AM PDT            4.06           2895         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.