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: Feb 21 2026 at 8:31 AM PSTNext Issuance: Feb 22 2026 at 9:00 AM PST
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:  02/21/2026 at 08:31 AM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  02/21/2026 at 08:00 AM PST
# Maximum Observed Stage:                       6.10 Feet
# Maximum Observed Flow:                        5604 cfs
#
# Earliest Date & Time of Maximum Forecast:     02/25/2026 at 08:00 AM PST
# Maximum Forecast Stage:                       8.74 Feet
# Maximum Forecast Flow:                        10651 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  02/16/2026 08 AM PST            3.23           2070                        Normal
  02/16/2026 09 AM PST            3.22           2061         -              Normal
  02/16/2026 10 AM PST            3.22           2061         0              Normal
  02/16/2026 11 AM PST            3.22           2061         0              Normal
  02/16/2026 12 PM PST            3.23           2070         +              Normal
  02/16/2026 01 PM PST            3.22           2061         -              Normal
  02/16/2026 02 PM PST            3.23           2070         +              Normal
  02/16/2026 03 PM PST            3.24           2079         +              Normal
  02/16/2026 04 PM PST            3.24           2079         0              Normal
  02/16/2026 05 PM PST            3.24           2079         0              Normal
  02/16/2026 06 PM PST            3.24           2079         0              Normal
  02/16/2026 07 PM PST            3.24           2079         0              Normal
  02/16/2026 08 PM PST            3.23           2070         -              Normal
  02/16/2026 09 PM PST            3.24           2079         +              Normal
  02/16/2026 10 PM PST            3.25           2088         +              Normal
  02/16/2026 11 PM PST            3.25           2088         0              Normal
  02/17/2026 12 AM PST            3.25           2088         0              Normal
  02/17/2026 01 AM PST            3.26           2098         +              Normal
  02/17/2026 02 AM PST            3.27           2107         +              Normal
  02/17/2026 03 AM PST            3.28           2116         +              Normal
  02/17/2026 04 AM PST            3.28           2116         0              Normal
  02/17/2026 05 AM PST            3.30           2134         +              Normal
  02/17/2026 06 AM PST            3.30           2134         0              Normal
  02/17/2026 07 AM PST            3.32           2152         +              Normal
  02/17/2026 08 AM PST            3.32           2152         0              Normal
  02/17/2026 09 AM PST            3.34           2171         +              Normal
  02/17/2026 10 AM PST            3.34           2171         0              Normal
  02/17/2026 11 AM PST            3.35           2180         +              Normal
  02/17/2026 12 PM PST            3.36           2189         +              Normal
  02/17/2026 01 PM PST            3.38           2208         +              Normal
  02/17/2026 02 PM PST            3.38           2208         0              Normal
  02/17/2026 03 PM PST            3.39           2217         +              Normal
  02/17/2026 04 PM PST            3.39           2217         0              Normal
  02/17/2026 05 PM PST            3.38           2208         -              Normal
  02/17/2026 06 PM PST            3.36           2189         -              Normal
  02/17/2026 07 PM PST            3.34           2171         -              Normal
  02/17/2026 08 PM PST            3.33           2162         -              Normal
  02/17/2026 09 PM PST            3.31           2143         -              Normal
  02/17/2026 10 PM PST            3.31           2143         0              Normal
  02/17/2026 11 PM PST            3.31           2143         0              Normal
  02/18/2026 12 AM PST            3.30           2134         -              Normal
  02/18/2026 01 AM PST            3.30           2134         0              Normal
  02/18/2026 02 AM PST            3.31           2143         +              Normal
  02/18/2026 03 AM PST            3.31           2143         0              Normal
  02/18/2026 04 AM PST            3.32           2152         +              Normal
  02/18/2026 05 AM PST            3.32           2152         0              Normal
  02/18/2026 06 AM PST            3.32           2152         0              Normal
  02/18/2026 07 AM PST            3.31           2143         -              Normal
  02/18/2026 08 AM PST            3.31           2143         0              Normal
  02/18/2026 09 AM PST            3.30           2134         -              Normal
  02/18/2026 10 AM PST            3.31           2143         +              Normal
  02/18/2026 11 AM PST            3.30           2134         -              Normal
  02/18/2026 12 PM PST            3.31           2143         +              Normal
  02/18/2026 01 PM PST            3.31           2143         0              Normal
  02/18/2026 02 PM PST            3.31           2143         0              Normal
  02/18/2026 03 PM PST            3.31           2143         0              Normal
  02/18/2026 04 PM PST            3.31           2143         0              Normal
  02/18/2026 05 PM PST            3.31           2143         0              Normal
  02/18/2026 06 PM PST            3.31           2143         0              Normal
  02/18/2026 07 PM PST            3.30           2134         -              Normal
  02/18/2026 08 PM PST            3.30           2134         0              Normal
  02/18/2026 09 PM PST            3.29           2125         -              Normal
  02/18/2026 10 PM PST            3.28           2116         -              Normal
  02/18/2026 11 PM PST            3.29           2125         +              Normal
  02/19/2026 12 AM PST            3.28           2116         -              Normal
  02/19/2026 01 AM PST            3.28           2116         0              Normal
  02/19/2026 02 AM PST            3.27           2107         -              Normal
  02/19/2026 03 AM PST            3.28           2116         +              Normal
  02/19/2026 04 AM PST            3.28           2116         0              Normal
  02/19/2026 05 AM PST            3.28           2116         0              Normal
  02/19/2026 06 AM PST            3.28           2116         0              Normal
  02/19/2026 07 AM PST            3.28           2116         0              Normal
  02/19/2026 08 AM PST            3.27           2107         -              Normal
  02/19/2026 09 AM PST            3.28           2116         +              Normal
  02/19/2026 10 AM PST            3.28           2116         0              Normal
  02/19/2026 11 AM PST            3.27           2107         -              Normal
  02/19/2026 12 PM PST            3.29           2125         +              Normal
  02/19/2026 01 PM PST            3.29           2125         0              Normal
  02/19/2026 02 PM PST            3.29           2125         0              Normal
  02/19/2026 03 PM PST            3.34           2171         +              Normal
  02/19/2026 04 PM PST            3.34           2171         0              Normal
  02/19/2026 05 PM PST            3.31           2143         -              Normal
  02/19/2026 06 PM PST            3.31           2143         0              Normal
  02/19/2026 07 PM PST            3.30           2134         -              Normal
  02/19/2026 08 PM PST            3.29           2125         -              Normal
  02/19/2026 09 PM PST            3.28           2116         -              Normal
  02/19/2026 10 PM PST            3.29           2125         +              Normal
  02/19/2026 11 PM PST            3.29           2125         0              Normal
  02/20/2026 12 AM PST            3.29           2125         0              Normal
  02/20/2026 01 AM PST            3.29           2125         0              Normal
  02/20/2026 02 AM PST            3.28           2116         -              Normal
  02/20/2026 03 AM PST            3.28           2116         0              Normal
  02/20/2026 04 AM PST            3.27           2107         -              Normal
  02/20/2026 05 AM PST            3.26           2098         -              Normal
  02/20/2026 06 AM PST            3.26           2098         0              Normal
  02/20/2026 07 AM PST            3.26           2098         0              Normal
  02/20/2026 08 AM PST            3.27           2107         +              Normal
  02/20/2026 09 AM PST            3.26           2098         -              Normal
  02/20/2026 10 AM PST            3.26           2098         0              Normal
  02/20/2026 11 AM PST            3.26           2098         0              Normal
  02/20/2026 12 PM PST            3.26           2098         0              Normal
  02/20/2026 01 PM PST            3.27           2107         +              Normal
  02/20/2026 02 PM PST            3.26           2098         -              Normal
  02/20/2026 03 PM PST            3.29           2125         +              Normal
  02/20/2026 04 PM PST            3.29           2125         0              Normal
  02/20/2026 05 PM PST            3.28           2116         -              Normal
  02/20/2026 06 PM PST            3.26           2098         -              Normal
  02/20/2026 07 PM PST            3.25           2088         -              Normal
  02/20/2026 08 PM PST            3.24           2079         -              Normal
  02/20/2026 09 PM PST            3.24           2079         0              Normal
  02/20/2026 10 PM PST            3.24           2079         0              Normal
  02/20/2026 11 PM PST            3.24           2079         0              Normal
  02/21/2026 12 AM PST            3.24           2079         0              Normal
  02/21/2026 01 AM PST            3.24           2079         0              Normal
  02/21/2026 02 AM PST            3.23           2070         -              Normal
  02/21/2026 03 AM PST            3.28           2116         +              Normal
  02/21/2026 04 AM PST            5.42           4590         +              Normal
  02/21/2026 05 AM PST            5.96           5386         +              Normal
  02/21/2026 06 AM PST            6.08           5573         +              Normal
  02/21/2026 07 AM PST            6.08           5573         0              Normal
  02/21/2026 08 AM PST            6.10           5604         +              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  02/21/2026 09 AM PST            6.09           5588                        Normal
  02/21/2026 10 AM PST            6.10           5604         +              Normal
  02/21/2026 11 AM PST            6.11           5620         +              Normal
  02/21/2026 12 PM PST            6.11           5620         0              Normal
  02/21/2026 01 PM PST            6.12           5636         +              Normal
  02/21/2026 02 PM PST            6.12           5636         0              Normal
  02/21/2026 03 PM PST            6.11           5620         -              Normal
  02/21/2026 04 PM PST            6.11           5620         0              Normal
  02/21/2026 05 PM PST            6.12           5636         +              Normal
  02/21/2026 06 PM PST            6.12           5636         0              Normal
  02/21/2026 07 PM PST            6.11           5620         -              Normal
  02/21/2026 08 PM PST            6.08           5573         -              Normal
  02/21/2026 09 PM PST            6.01           5463         -              Normal
  02/21/2026 10 PM PST            5.92           5325         -              Normal
  02/21/2026 11 PM PST            5.84           5203         -              Normal
  02/22/2026 12 AM PST            5.78           5113         -              Normal
  02/22/2026 01 AM PST            5.73           5038         -              Normal
  02/22/2026 02 AM PST            5.68           4965         -              Normal
  02/22/2026 03 AM PST            5.66           4935         -              Normal
  02/22/2026 04 AM PST            5.63           4891         -              Normal
  02/22/2026 05 AM PST            5.62           4877         -              Normal
  02/22/2026 06 AM PST            5.61           4862         -              Normal
  02/22/2026 07 AM PST            5.61           4862         0              Normal
  02/22/2026 08 AM PST            5.60           4848         -              Normal
  02/22/2026 09 AM PST            5.60           4848         0              Normal
  02/22/2026 10 AM PST            5.60           4848         0              Normal
  02/22/2026 11 AM PST            5.61           4862         +              Normal
  02/22/2026 12 PM PST            5.61           4862         0              Normal
  02/22/2026 01 PM PST            5.61           4862         0              Normal
  02/22/2026 02 PM PST            5.62           4877         +              Normal
  02/22/2026 03 PM PST            5.62           4877         0              Normal
  02/22/2026 04 PM PST            5.62           4877         0              Normal
  02/22/2026 05 PM PST            5.63           4891         +              Normal
  02/22/2026 06 PM PST            5.63           4891         0              Normal
  02/22/2026 07 PM PST            5.64           4906         +              Normal
  02/22/2026 08 PM PST            5.63           4891         -              Normal
  02/22/2026 09 PM PST            5.60           4848         -              Normal
  02/22/2026 10 PM PST            5.54           4761         -              Normal
  02/22/2026 11 PM PST            5.48           4675         -              Normal
  02/23/2026 12 AM PST            5.43           4604         -              Normal
  02/23/2026 01 AM PST            5.37           4520         -              Normal
  02/23/2026 02 AM PST            5.30           4423         -              Normal
  02/23/2026 03 AM PST            5.25           4354         -              Normal
  02/23/2026 04 AM PST            5.20           4286         -              Normal
  02/23/2026 05 AM PST            5.16           4232         -              Normal
  02/23/2026 06 AM PST            5.13           4192         -              Normal
  02/23/2026 07 AM PST            5.10           4152         -              Normal
  02/23/2026 08 AM PST            5.08           4125         -              Normal
  02/23/2026 09 AM PST            5.06           4099         -              Normal
  02/23/2026 10 AM PST            5.04           4072         -              Normal
  02/23/2026 11 AM PST            5.04           4072         0              Normal
  02/23/2026 12 PM PST            5.03           4059         -              Normal
  02/23/2026 01 PM PST            5.03           4059         0              Normal
  02/23/2026 02 PM PST            5.03           4059         0              Normal
  02/23/2026 03 PM PST            5.03           4059         0              Normal
  02/23/2026 04 PM PST            5.03           4059         0              Normal
  02/23/2026 05 PM PST            5.03           4059         0              Normal
  02/23/2026 06 PM PST            5.03           4059         0              Normal
  02/23/2026 07 PM PST            5.04           4072         +              Normal
  02/23/2026 08 PM PST            5.05           4086         +              Normal
  02/23/2026 09 PM PST            5.06           4099         +              Normal
  02/23/2026 10 PM PST            5.08           4125         +              Normal
  02/23/2026 11 PM PST            5.10           4152         +              Normal
  02/24/2026 12 AM PST            5.13           4192         +              Normal
  02/24/2026 01 AM PST            5.17           4246         +              Normal
  02/24/2026 02 AM PST            5.22           4313         +              Normal
  02/24/2026 03 AM PST            5.31           4437         +              Normal
  02/24/2026 04 AM PST            5.46           4647         +              Normal
  02/24/2026 05 AM PST            5.63           4891         +              Normal
  02/24/2026 06 AM PST            5.90           5294         +              Normal
  02/24/2026 07 AM PST            6.26           5859         +              Normal
  02/24/2026 08 AM PST            6.65           6508         +              Normal
  02/24/2026 09 AM PST            6.90           6944         +              Normal
  02/24/2026 10 AM PST            7.11           7323         +              Normal
  02/24/2026 11 AM PST            7.31           7694         +              Normal
  02/24/2026 12 PM PST            7.52           8095         +              Normal
  02/24/2026 01 PM PST            7.71           8467         +              Normal
  02/24/2026 02 PM PST            7.85           8748         +              Normal
  02/24/2026 03 PM PST            7.97           8992         +              Normal
  02/24/2026 04 PM PST            8.09           9240         +              Normal
  02/24/2026 05 PM PST            8.19           9450         +              Normal
  02/24/2026 06 PM PST            8.28           9641         +              Normal
  02/24/2026 07 PM PST            8.35           9791         +              Normal
  02/24/2026 08 PM PST            8.41           9921         +              Normal
  02/24/2026 09 PM PST            8.46          10030         +              Normal
  02/24/2026 10 PM PST            8.52          10161         +              Normal
  02/24/2026 11 PM PST            8.56          10249         +              Normal
  02/25/2026 12 AM PST            8.59          10316         +              Normal
  02/25/2026 01 AM PST            8.62          10382         +              Normal
  02/25/2026 02 AM PST            8.65          10449         +              Normal
  02/25/2026 03 AM PST            8.68          10516         +              Normal
  02/25/2026 04 AM PST            8.70          10561         +              Normal
  02/25/2026 05 AM PST            8.71          10584         +              Normal
  02/25/2026 06 AM PST            8.72          10606         +              Normal
  02/25/2026 07 AM PST            8.73          10629         +              Normal
  02/25/2026 08 AM PST            8.74          10651         +              Normal
  02/25/2026 09 AM PST            8.73          10629         -              Normal
  02/25/2026 10 AM PST            8.72          10606         -              Normal
  02/25/2026 11 AM PST            8.69          10539         -              Normal
  02/25/2026 12 PM PST            8.66          10471         -              Normal
  02/25/2026 01 PM PST            8.63          10405         -              Normal
  02/25/2026 02 PM PST            8.60          10338         -              Normal
  02/25/2026 03 PM PST            8.55          10227         -              Normal
  02/25/2026 04 PM PST            8.51          10139         -              Normal
  02/25/2026 05 PM PST            8.47          10051         -              Normal
  02/25/2026 06 PM PST            8.43           9964         -              Normal
  02/25/2026 07 PM PST            8.38           9856         -              Normal
  02/25/2026 08 PM PST            8.33           9748         -              Normal
  02/25/2026 09 PM PST            8.28           9641         -              Normal
  02/25/2026 10 PM PST            8.23           9535         -              Normal
  02/25/2026 11 PM PST            8.19           9450         -              Normal
  02/26/2026 12 AM PST            8.13           9324         -              Normal
  02/26/2026 01 AM PST            8.07           9199         -              Normal
  02/26/2026 02 AM PST            8.02           9095         -              Normal
  02/26/2026 03 AM PST            7.96           8971         -              Normal
  02/26/2026 04 AM PST            7.90           8849         -              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.