Portland Discovery Land and Sea Tours
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Boat launches near Portland Discovery Land and Sea Tours
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Typical flow by month
1976 to 2026
The water at Portland Discovery Land and Sea Tours typically runs highest in April, at a median 1,335 cfs, and lowest in July, at 649 cfs. The highest flow on record for any single day is 9,760 cfs, in 1977.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 1,060 | 662 to 1,600 | |
| February | 912 | 625 to 1,340 | |
| March | 1,260 | 866 to 1,800 | |
| April | 1,335 | 695 to 2,030 | |
| May | 1,150 | 698 to 1,690 | |
| June | 830 | 550 to 1,115 | |
| July | 649 | 407 to 893 | |
| August | 709 | 451 to 836 | |
| September | 668 | 461 to 772 | |
| October | 652 | 484 to 935 | |
| November | 907 | 592 to 1,275 | |
| December | 965 | 604 to 1,320 |
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 15 years of record. Statistics published by the US Geological Survey for Presumpscot River near West Falmouth, Maine (site 01064140). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Current conditions
Waves
1.9 ft @ 5s
Wind
9 kt
Gusts 18 kt
Water
60°F
Air
49°F
Streamflow
300 cfs
Below normal (13th)
Water level
2.24 ft
Rain chance
0%
Forecast outlook
Forecast from Open-Meteo global models (NOAA & ECMWF). See full conditions →
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