Columbia River At St. Helens

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Hydrograph

Stage Color Key
14.5 ft - Near Flood 15.5 ft - Minor Flood 18 ft - Moderate Flood 21 ft - Major Flood

Latest Observation: Friday September 18th, 2026 02:30 AM CDT
River Status: Normal

  Height Flow
Currently 2.6 ft N/A
Record 27.1 ft N/A

Forecast
  Date (CDT) Stage (ft) Flow (kcfs)
  Wednesday 12/31/1969 06:00 PM 0.00 N/A
  Thursday 09/17/2026 07:00 PM 1.60 N/A
  Thursday 09/17/2026 08:00 PM 2.33 N/A
  Thursday 09/17/2026 09:00 PM 3.00 N/A
  Thursday 09/17/2026 10:00 PM 3.49 N/A
  Thursday 09/17/2026 11:00 PM 3.79 N/A
  Friday 09/18/2026 12:00 AM 3.78 N/A

Observation
  Date (CDT) Stage (ft) Flow (kcfs)
Friday 09/18/2026 12:36 AM 3.57 N/A
Friday 09/18/2026 12:42 AM 3.50 N/A
Friday 09/18/2026 12:48 AM 3.44 N/A
Friday 09/18/2026 12:54 AM 3.37 N/A
Friday 09/18/2026 01:00 AM 3.31 N/A
Friday 09/18/2026 01:06 AM 3.25 N/A
Friday 09/18/2026 01:12 AM 3.18 N/A
Friday 09/18/2026 01:18 AM 3.13 N/A
Friday 09/18/2026 01:24 AM 3.07 N/A
Friday 09/18/2026 01:30 AM 3.02 N/A
Friday 09/18/2026 01:36 AM 2.97 N/A
Friday 09/18/2026 01:42 AM 2.91 N/A
Friday 09/18/2026 01:48 AM 2.86 N/A
Friday 09/18/2026 01:54 AM 2.82 N/A
Friday 09/18/2026 02:00 AM 2.79 N/A
Friday 09/18/2026 02:06 AM 2.75 N/A
Friday 09/18/2026 02:12 AM 2.70 N/A
Friday 09/18/2026 02:18 AM 2.67 N/A
Friday 09/18/2026 02:24 AM 2.64 N/A
Friday 09/18/2026 02:30 AM 2.60 N/A

Data Courtesy of the Advanced Hydrologic Prediction Service
Script Courtesy of Dennis at East Masonville Weather with mods by Saratoga-weather.org