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KLAMATH RIVER - ORLEANS (ONSC1)
| Latitude: 41.30º N | Longitude: 123.54º W | Elevation: 354 Feet | | Forecast Type: Official Location |
| Location: Humboldt County in California | Bulletin Group: North Coast | River Group: Klamath |
| Issuance Time: | Apr 21 2026 at 7:58 AM PDT | Next Issuance: | Apr 22 2026 at 9:00 AM PDT
| |
| Action/Monitor: 32.0 Feet | Minor Flood: 38.0 Feet | Moderate Flood: 43.0 Feet | Major 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.
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