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 - ORLEANS (ONSC1)
Latitude: 41.30º NLongitude: 123.54º WElevation: 354 FeetForecast Type: Official Location
Location: Humboldt County in CaliforniaBulletin Group: North CoastRiver Group: Klamath
Issuance Time: Apr 21 2026 at 7:58 AM PDTNext Issuance: Apr 22 2026 at 9:00 AM PDT
Action/Monitor: 32.0 FeetMinor Flood: 38.0 FeetModerate Flood: 43.0 FeetMajor Flood: 48.0 Feet


# Tabular Observed and Forecast Hydrograph Information
#
# Location: Klamath River - Orleans (ONSC1)
#
# File Generation Time:  04/21/2026 at 07:59 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/16/2026 at 08:00 AM PDT
# Maximum Observed Stage:                       5.83 Feet
# Maximum Observed Flow:                        6421 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/22/2026 at 01:00 AM PDT
# Maximum Forecast Stage:                       5.59 Feet
# Maximum Forecast Flow:                        6052 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/16/2026 07 AM PDT            5.83           6421                        Normal
  04/16/2026 08 AM PDT            5.83           6421         0              Normal
  04/16/2026 09 AM PDT            5.80           6375         -              Normal
  04/16/2026 10 AM PDT            5.77           6328         -              Normal
  04/16/2026 11 AM PDT            5.79           6359         +              Normal
  04/16/2026 12 PM PDT            5.71           6236         -              Normal
  04/16/2026 01 PM PDT            5.73           6267         +              Normal
  04/16/2026 02 PM PDT            5.72           6251         -              Normal
  04/16/2026 03 PM PDT            5.71           6236         -              Normal
  04/16/2026 04 PM PDT            5.68           6190         -              Normal
  04/16/2026 05 PM PDT            5.66           6159         -              Normal
  04/16/2026 06 PM PDT            5.64           6129         -              Normal
  04/16/2026 07 PM PDT            5.64           6129         0              Normal
  04/16/2026 08 PM PDT            5.61           6083         -              Normal
  04/16/2026 09 PM PDT            5.59           6052         -              Normal
  04/16/2026 10 PM PDT            5.56           6007         -              Normal
  04/16/2026 11 PM PDT            5.56           6007         0              Normal
  04/17/2026 12 AM PDT            5.57           6022         +              Normal
  04/17/2026 01 AM PDT            5.54           5977         -              Normal
  04/17/2026 02 AM PDT            5.53           5961         -              Normal
  04/17/2026 03 AM PDT            5.53           5961         0              Normal
  04/17/2026 04 AM PDT            5.51           5931         -              Normal
  04/17/2026 05 AM PDT            5.51           5931         0              Normal
  04/17/2026 06 AM PDT            5.51           5931         0              Normal
  04/17/2026 07 AM PDT            5.49           5901         -              Normal
  04/17/2026 08 AM PDT            5.48           5886         -              Normal
  04/17/2026 09 AM PDT            5.48           5886         0              Normal
  04/17/2026 10 AM PDT            5.47           5871         -              Normal
  04/17/2026 11 AM PDT            5.46           5856         -              Normal
  04/17/2026 12 PM PDT            5.47           5871         +              Normal
  04/17/2026 01 PM PDT            5.48           5886         +              Normal
  04/17/2026 02 PM PDT            5.46           5856         -              Normal
  04/17/2026 03 PM PDT            5.43           5811         -              Normal
  04/17/2026 04 PM PDT            5.43           5811         0              Normal
  04/17/2026 05 PM PDT            5.42           5796         -              Normal
  04/17/2026 06 PM PDT            5.40           5766         -              Normal
  04/17/2026 07 PM PDT            5.41           5781         +              Normal
  04/17/2026 08 PM PDT            5.42           5796         +              Normal
  04/17/2026 09 PM PDT            5.41           5781         -              Normal
  04/17/2026 10 PM PDT            5.42           5796         +              Normal
  04/17/2026 11 PM PDT            5.39           5751         -              Normal
  04/18/2026 12 AM PDT            5.38           5736         -              Normal
  04/18/2026 01 AM PDT            5.36           5706         -              Normal
  04/18/2026 02 AM PDT            5.36           5706         0              Normal
  04/18/2026 03 AM PDT            5.34           5676         -              Normal
  04/18/2026 04 AM PDT            5.35           5691         +              Normal
  04/18/2026 05 AM PDT            5.33           5661         -              Normal
  04/18/2026 06 AM PDT            5.34           5676         +              Normal
  04/18/2026 07 AM PDT            5.33           5661         -              Normal
  04/18/2026 08 AM PDT            5.33           5661         0              Normal
  04/18/2026 09 AM PDT            5.34           5676         +              Normal
  04/18/2026 10 AM PDT            5.32           5646         -              Normal
  04/18/2026 11 AM PDT            5.32           5646         0              Normal
  04/18/2026 12 PM PDT            5.30           5616         -              Normal
  04/18/2026 01 PM PDT            5.32           5646         +              Normal
  04/18/2026 02 PM PDT            5.29           5601         -              Normal
  04/18/2026 03 PM PDT            5.29           5601         0              Normal
  04/18/2026 04 PM PDT            5.30           5616         +              Normal
  04/18/2026 05 PM PDT            5.30           5616         0              Normal
  04/18/2026 06 PM PDT            5.28           5587         -              Normal
  04/18/2026 07 PM PDT            5.30           5616         +              Normal
  04/18/2026 08 PM PDT            5.27           5572         -              Normal
  04/18/2026 09 PM PDT            5.28           5587         +              Normal
  04/18/2026 10 PM PDT            5.27           5572         -              Normal
  04/18/2026 11 PM PDT            5.26           5557         -              Normal
  04/19/2026 12 AM PDT            5.25           5542         -              Normal
  04/19/2026 01 AM PDT            5.24           5527         -              Normal
  04/19/2026 02 AM PDT            5.23           5513         -              Normal
  04/19/2026 03 AM PDT            5.23           5513         0              Normal
  04/19/2026 04 AM PDT            5.21           5483         -              Normal
  04/19/2026 05 AM PDT            5.22           5498         +              Normal
  04/19/2026 06 AM PDT            5.22           5498         0              Normal
  04/19/2026 07 AM PDT            5.23           5513         +              Normal
  04/19/2026 08 AM PDT            5.18           5439         -              Normal
  04/19/2026 09 AM PDT            5.19           5454         +              Normal
  04/19/2026 10 AM PDT            5.19           5454         0              Normal
  04/19/2026 11 AM PDT            5.20           5468         +              Normal
  04/19/2026 12 PM PDT            5.20           5468         0              Normal
  04/19/2026 01 PM PDT            5.19           5454         -              Normal
  04/19/2026 02 PM PDT            5.21           5483         +              Normal
  04/19/2026 03 PM PDT            5.18           5439         -              Normal
  04/19/2026 04 PM PDT            5.18           5439         0              Normal
  04/19/2026 05 PM PDT            5.17           5424         -              Normal
  04/19/2026 06 PM PDT            5.17           5424         0              Normal
  04/19/2026 07 PM PDT            5.20           5468         +              Normal
  04/19/2026 08 PM PDT            5.15           5395         -              Normal
  04/19/2026 09 PM PDT            5.17           5424         +              Normal
  04/19/2026 10 PM PDT            5.17           5424         0              Normal
  04/19/2026 11 PM PDT            5.14           5380         -              Normal
  04/20/2026 12 AM PDT            5.14           5380         0              Normal
  04/20/2026 01 AM PDT            5.15           5395         +              Normal
  04/20/2026 02 AM PDT            5.11           5336         -              Normal
  04/20/2026 03 AM PDT            5.11           5336         0              Normal
  04/20/2026 04 AM PDT            5.12           5351         +              Normal
  04/20/2026 05 AM PDT            5.10           5322         -              Normal
  04/20/2026 06 AM PDT            5.11           5336         +              Normal
  04/20/2026 07 AM PDT            5.11           5336         0              Normal
  04/20/2026 08 AM PDT            5.10           5322         -              Normal
  04/20/2026 09 AM PDT            5.12           5351         +              Normal
  04/20/2026 10 AM PDT            5.11           5336         -              Normal
  04/20/2026 11 AM PDT            5.11           5336         0              Normal
  04/20/2026 12 PM PDT            5.13           5366         +              Normal
  04/20/2026 01 PM PDT            5.13           5366         0              Normal
  04/20/2026 02 PM PDT            5.14           5380         +              Normal
  04/20/2026 03 PM PDT            5.14           5380         0              Normal
  04/20/2026 04 PM PDT            5.15           5395         +              Normal
  04/20/2026 05 PM PDT            5.14           5380         -              Normal
  04/20/2026 06 PM PDT            5.15           5395         +              Normal
  04/20/2026 07 PM PDT            5.16           5410         +              Normal
  04/20/2026 08 PM PDT            5.29           5601         +              Normal
  04/20/2026 09 PM PDT            5.30           5616         +              Normal
  04/20/2026 10 PM PDT            5.30           5616         0              Normal
  04/20/2026 11 PM PDT            5.28           5587         -              Normal
  04/21/2026 12 AM PDT            5.30           5616         +              Normal
  04/21/2026 01 AM PDT            5.31           5631         +              Normal
  04/21/2026 02 AM PDT            5.33           5661         +              Normal
  04/21/2026 03 AM PDT            5.31           5631         -              Normal
  04/21/2026 04 AM PDT            5.31           5631         0              Normal
  04/21/2026 05 AM PDT            5.34           5676         +              Normal
  04/21/2026 06 AM PDT            5.37           5721         +              Normal
  04/21/2026 07 AM PDT            5.37           5721         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/21/2026 08 AM PDT            5.36           5706                        Normal
  04/21/2026 09 AM PDT            5.35           5691         -              Normal
  04/21/2026 10 AM PDT            5.34           5676         -              Normal
  04/21/2026 11 AM PDT            5.33           5661         -              Normal
  04/21/2026 12 PM PDT            5.33           5661         0              Normal
  04/21/2026 01 PM PDT            5.31           5631         -              Normal
  04/21/2026 02 PM PDT            5.31           5631         0              Normal
  04/21/2026 03 PM PDT            5.31           5631         0              Normal
  04/21/2026 04 PM PDT            5.32           5646         +              Normal
  04/21/2026 05 PM PDT            5.34           5676         +              Normal
  04/21/2026 06 PM PDT            5.38           5736         +              Normal
  04/21/2026 07 PM PDT            5.42           5796         +              Normal
  04/21/2026 08 PM PDT            5.47           5871         +              Normal
  04/21/2026 09 PM PDT            5.51           5931         +              Normal
  04/21/2026 10 PM PDT            5.54           5977         +              Normal
  04/21/2026 11 PM PDT            5.57           6022         +              Normal
  04/22/2026 12 AM PDT            5.58           6037         +              Normal
  04/22/2026 01 AM PDT            5.59           6052         +              Normal
  04/22/2026 02 AM PDT            5.58           6037         -              Normal
  04/22/2026 03 AM PDT            5.58           6037         0              Normal
  04/22/2026 04 AM PDT            5.57           6022         -              Normal
  04/22/2026 05 AM PDT            5.55           5992         -              Normal
  04/22/2026 06 AM PDT            5.54           5977         -              Normal
  04/22/2026 07 AM PDT            5.52           5946         -              Normal
  04/22/2026 08 AM PDT            5.50           5916         -              Normal
  04/22/2026 09 AM PDT            5.49           5901         -              Normal
  04/22/2026 10 AM PDT            5.48           5886         -              Normal
  04/22/2026 11 AM PDT            5.46           5856         -              Normal
  04/22/2026 12 PM PDT            5.46           5856         0              Normal
  04/22/2026 01 PM PDT            5.45           5841         -              Normal
  04/22/2026 02 PM PDT            5.44           5826         -              Normal
  04/22/2026 03 PM PDT            5.44           5826         0              Normal
  04/22/2026 04 PM PDT            5.43           5811         -              Normal
  04/22/2026 05 PM PDT            5.43           5811         0              Normal
  04/22/2026 06 PM PDT            5.43           5811         0              Normal
  04/22/2026 07 PM PDT            5.42           5796         -              Normal
  04/22/2026 08 PM PDT            5.42           5796         0              Normal
  04/22/2026 09 PM PDT            5.42           5796         0              Normal
  04/22/2026 10 PM PDT            5.41           5781         -              Normal
  04/22/2026 11 PM PDT            5.41           5781         0              Normal
  04/23/2026 12 AM PDT            5.40           5766         -              Normal
  04/23/2026 01 AM PDT            5.39           5751         -              Normal
  04/23/2026 02 AM PDT            5.39           5751         0              Normal
  04/23/2026 03 AM PDT            5.38           5736         -              Normal
  04/23/2026 04 AM PDT            5.37           5721         -              Normal
  04/23/2026 05 AM PDT            5.35           5691         -              Normal
  04/23/2026 06 AM PDT            5.34           5676         -              Normal
  04/23/2026 07 AM PDT            5.33           5661         -              Normal
  04/23/2026 08 AM PDT            5.32           5646         -              Normal
  04/23/2026 09 AM PDT            5.31           5631         -              Normal
  04/23/2026 10 AM PDT            5.29           5601         -              Normal
  04/23/2026 11 AM PDT            5.28           5587         -              Normal
  04/23/2026 12 PM PDT            5.27           5572         -              Normal
  04/23/2026 01 PM PDT            5.25           5542         -              Normal
  04/23/2026 02 PM PDT            5.24           5527         -              Normal
  04/23/2026 03 PM PDT            5.23           5513         -              Normal
  04/23/2026 04 PM PDT            5.23           5513         0              Normal
  04/23/2026 05 PM PDT            5.24           5527         +              Normal
  04/23/2026 06 PM PDT            5.25           5542         +              Normal
  04/23/2026 07 PM PDT            5.28           5587         +              Normal
  04/23/2026 08 PM PDT            5.30           5616         +              Normal
  04/23/2026 09 PM PDT            5.32           5646         +              Normal
  04/23/2026 10 PM PDT            5.34           5676         +              Normal
  04/23/2026 11 PM PDT            5.35           5691         +              Normal
  04/24/2026 12 AM PDT            5.37           5721         +              Normal
  04/24/2026 01 AM PDT            5.38           5736         +              Normal
  04/24/2026 02 AM PDT            5.38           5736         0              Normal
  04/24/2026 03 AM PDT            5.39           5751         +              Normal
  04/24/2026 04 AM PDT            5.39           5751         0              Normal
  04/24/2026 05 AM PDT            5.39           5751         0              Normal
  04/24/2026 06 AM PDT            5.39           5751         0              Normal
  04/24/2026 07 AM PDT            5.38           5736         -              Normal
  04/24/2026 08 AM PDT            5.37           5721         -              Normal
  04/24/2026 09 AM PDT            5.37           5721         0              Normal
  04/24/2026 10 AM PDT            5.36           5706         -              Normal
  04/24/2026 11 AM PDT            5.36           5706         0              Normal
  04/24/2026 12 PM PDT            5.35           5691         -              Normal
  04/24/2026 01 PM PDT            5.35           5691         0              Normal
  04/24/2026 02 PM PDT            5.35           5691         0              Normal
  04/24/2026 03 PM PDT            5.36           5706         +              Normal
  04/24/2026 04 PM PDT            5.36           5706         0              Normal
  04/24/2026 05 PM PDT            5.37           5721         +              Normal
  04/24/2026 06 PM PDT            5.38           5736         +              Normal
  04/24/2026 07 PM PDT            5.40           5766         +              Normal
  04/24/2026 08 PM PDT            5.41           5781         +              Normal
  04/24/2026 09 PM PDT            5.43           5811         +              Normal
  04/24/2026 10 PM PDT            5.43           5811         0              Normal
  04/24/2026 11 PM PDT            5.44           5826         +              Normal
  04/25/2026 12 AM PDT            5.43           5811         -              Normal
  04/25/2026 01 AM PDT            5.43           5811         0              Normal
  04/25/2026 02 AM PDT            5.42           5796         -              Normal
  04/25/2026 03 AM PDT            5.41           5781         -              Normal
  04/25/2026 04 AM PDT            5.40           5766         -              Normal
  04/25/2026 05 AM PDT            5.38           5736         -              Normal
  04/25/2026 06 AM PDT            5.37           5721         -              Normal
  04/25/2026 07 AM PDT            5.35           5691         -              Normal
  04/25/2026 08 AM PDT            5.33           5661         -              Normal
  04/25/2026 09 AM PDT            5.31           5631         -              Normal
  04/25/2026 10 AM PDT            5.29           5601         -              Normal
  04/25/2026 11 AM PDT            5.27           5572         -              Normal
  04/25/2026 12 PM PDT            5.25           5542         -              Normal
  04/25/2026 01 PM PDT            5.23           5513         -              Normal
  04/25/2026 02 PM PDT            5.21           5483         -              Normal
  04/25/2026 03 PM PDT            5.20           5468         -              Normal
  04/25/2026 04 PM PDT            5.18           5439         -              Normal
  04/25/2026 05 PM PDT            5.16           5410         -              Normal
  04/25/2026 06 PM PDT            5.14           5380         -              Normal
  04/25/2026 07 PM PDT            5.13           5366         -              Normal
  04/25/2026 08 PM PDT            5.11           5336         -              Normal
  04/25/2026 09 PM PDT            5.10           5322         -              Normal
  04/25/2026 10 PM PDT            5.08           5292         -              Normal
  04/25/2026 11 PM PDT            5.07           5278         -              Normal
  04/26/2026 12 AM PDT            5.06           5263         -              Normal
  04/26/2026 01 AM PDT            5.04           5234         -              Normal
  04/26/2026 02 AM PDT            5.03           5220         -              Normal
  04/26/2026 03 AM PDT            5.02           5205         -              Normal
  04/26/2026 04 AM PDT            5.01           5191         -              Normal
  04/26/2026 05 AM PDT            4.99           5162         -              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.