Pier 11 Marina
Pier 11 Marina is a marina in Chicago, Illinois. It is a full-service marina located on the Calumet River, offering boat storage, service, and slip rentals.
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Around here
Around Pier 11 Marina
Source: USGS GNIS · Public land: USGS PAD-US
Typical flow by month
1948 to 2026
The water at Pier 11 Marina typically runs highest in March, at a median 191 cfs, and lowest in September, at 48 cfs. The highest flow on record for any single day is 4,240 cfs, in 1957.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 85 | 55 to 157 |
| February | 97 | 60 to 189 |
| March | 191 | 115 to 367 |
| April | 170 | 100 to 341 |
| May | 128 | 78 to 246 |
| June | 91 | 56 to 194 |
| July | 67 | 46 to 126 |
| August | 56 | 41 to 99 |
| September | 48 | 36 to 88 |
| October | 57 | 38 to 99 |
| November | 72 | 46 to 146 |
| December | 90 | 52 to 172 |
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 79 years of record. Statistics published by the US Geological Survey for Little Calumet River at South Holland, IL (site 05536290). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Current conditions
Today · Fri
73Go/ 100
CloudyHigh 46°F, low 36°FRain 0%Wind 15 kt, gusts 24
Waves
0.3 ft
Wind
5 kt
Gusts 24 kt
Air
70°F
Streamflow
55 cfs
Normal (34th)
Water level
5.44 ft
Air quality
21 Good
CHI_WASH monitor, 7 km
National Weather ServiceBelow flood stage
Flood stage 16 ft. NWS reads 5.55 ft here.
NWS issues forecasts here only during high water.
Forecast from Open-Meteo global models (NOAA & ECMWF). Flood stages and forecasts: NOAA National Weather Service. Air quality: Illinois EPA via EPA AirNow. Preliminary data, not verified. See full conditions →
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