About this river
Northwest River is a 5.3 mile stream near Sebago Trails Paddling Company in Maine. Streamflow is measured at the USGS gauge Stony Brook at East Sebago, Maine (site 01063310). The National Hydrography Dataset places it at stream order 4. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1996 to 2026
Northwest River typically runs highest in April, at a median 4.0 cfs, and lowest in September, at 0.2 cfs. The highest flow on record for any single day is 67 cfs, in 2007.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 1.5 | 1.0 to 2.3 | |
| February | 1.1 | 0.8 to 1.7 | |
| March | 2.8 | 1.5 to 4.3 | |
| April | 4.0 | 2.5 to 6.6 | |
| May | 1.8 | 1.3 to 2.9 | |
| June | 0.8 | 0.5 to 1.9 | |
| July | 0.5 | 0.3 to 1.0 | |
| August | 0.3 | 0.1 to 0.7 | |
| September | 0.2 | 0.1 to 0.7 | |
| October | 0.5 | 0.2 to 1.3 | |
| November | 1.4 | 0.7 to 2.1 | |
| December | 1.7 | 1.0 to 3.0 |
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 31 years of record. Statistics published by the US Geological Survey for Stony Brook at East Sebago, Maine (site 01063310). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Northwest River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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