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: Monday September 14th, 2026 11:36 PM CDT
River Status: Normal

  Height Flow
Currently 3.76 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
  Monday 09/14/2026 07:00 PM 3.42 N/A
  Monday 09/14/2026 08:00 PM 4.22 N/A
  Monday 09/14/2026 09:00 PM 4.63 N/A
  Monday 09/14/2026 10:00 PM 4.62 N/A
  Monday 09/14/2026 11:00 PM 4.19 N/A
  Tuesday 09/15/2026 12:00 AM 3.64 N/A

Observation
  Date (CDT) Stage (ft) Flow (kcfs)
Monday 09/14/2026 09:36 PM 4.67 N/A
Monday 09/14/2026 09:42 PM 4.70 N/A
Monday 09/14/2026 09:48 PM 4.73 N/A
Monday 09/14/2026 09:54 PM 4.73 N/A
Monday 09/14/2026 10:00 PM 4.74 N/A
Monday 09/14/2026 10:06 PM 4.74 N/A
Monday 09/14/2026 10:12 PM 4.72 N/A
Monday 09/14/2026 10:18 PM 4.69 N/A
Monday 09/14/2026 10:24 PM 4.66 N/A
Monday 09/14/2026 10:30 PM 4.61 N/A
Monday 09/14/2026 10:36 PM 4.54 N/A
Monday 09/14/2026 10:42 PM 4.46 N/A
Monday 09/14/2026 10:48 PM 4.38 N/A
Monday 09/14/2026 10:54 PM 4.30 N/A
Monday 09/14/2026 11:00 PM 4.21 N/A
Monday 09/14/2026 11:06 PM 4.13 N/A
Monday 09/14/2026 11:12 PM 4.05 N/A
Monday 09/14/2026 11:18 PM 3.97 N/A
Monday 09/14/2026 11:24 PM 3.90 N/A
Monday 09/14/2026 11:30 PM 3.83 N/A

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