Port of Dubuque Marina
Independent directory listing. Not affiliated with Port of Dubuque Marina.
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Boat launches near Port of Dubuque Marina
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Typical flow by month
1998 to 2026
The water at Port of Dubuque Marina typically runs highest in June, at a median 541 cfs, and lowest in January, at 215 cfs. The highest flow on record for any single day is 20,200 cfs, in 2002.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 215 | 166 to 351 | |
| February | 307 | 195 to 417 | |
| March | 390 | 259 to 611 | |
| April | 410 | 302 to 611 | |
| May | 411 | 318 to 576 | |
| June | 541 | 289 to 783 | |
| July | 425 | 292 to 578 | |
| August | 300 | 228 to 427 | |
| September | 263 | 201 to 414 | |
| October | 256 | 195 to 399 | |
| November | 265 | 207 to 385 | |
| December | 239 | 180 to 343 |
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 28 years of record. Statistics published by the US Geological Survey for North Fork Maquoketa River near Fulton, IA (site 05418400). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Current conditions
Streamflow
1,470 cfs
Much above normal (91st)
Water level
6.36 ft
High today
68°F
Wind
7 kt
Gusts 14 kt
Rain chance
0%
Week ahead
Forecast from Open-Meteo global models (NOAA & ECMWF). See full conditions →
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