St. Helens Marina
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Around St. Helens Marina
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
Typical flow by month
1990 to 2026
The water at St. Helens Marina typically runs highest in January, at a median 151 cfs, and lowest in May, at 67 cfs. The highest flow on record for any single day is 2,400 cfs, in 1996.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 151 | 90 to 235 |
| February | 150 | 83 to 223 |
| March | 134 | 68 to 196 |
| April | 108 | 38 to 180 |
| May | 67 | -11 to 145 |
| June | 88 | 15 to 158 |
| July | 94 | 50 to 142 |
| August | 78 | 35 to 122 |
| September | 74 | 36 to 112 |
| October | 90 | 46 to 132 |
| November | 110 | 62 to 161 |
| December | 128 | 73 to 203 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 35 years of record. Statistics published by the US Geological Survey for Columbia Slough at Portland, OR (site 14211820). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Current conditions
Today · Sat
37No-go/ 100
Gusts to 38 kt · 91% chance of rain
DrizzleHigh 64°F, low 52°FRain 91%Wind 16 kt, gusts 38
Streamflow
-1,640 cfs
Much below normal (5th)
Water level
5.89 ft
Air quality
33 Good
Portland - Sauvie Island monitor, 11 km
Tides
Falling
Low 0.2 ft at 11:09 PM
Predicted at Saint Helens, under 1 km away.
Get a 2027 tide calendar for this stationForecast from Open-Meteo global models (NOAA & ECMWF). Air quality: Oregon Dept. of Environmental Quality via EPA AirNow. Preliminary data, not verified. Tide predictions: NOAA CO-OPS, feet above mean lower low water. See full conditions →
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