About this river
West Branch Ellis River is a 2.3 mile stream near Top Notch Fly Fishing LLC in New Hampshire. Streamflow is measured at the USGS gauge Ellis River at South Andover, Maine (site 01054300). The National Hydrography Dataset places it at stream order 4. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1963 to 2026
West Branch Ellis River typically runs highest in April, at a median 621 cfs, and lowest in September, at 41 cfs. The highest flow on record for any single day is 7,030 cfs, in 2024.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 123 | 76 to 182 | |
| February | 92 | 63 to 141 | |
| March | 161 | 94 to 304 | |
| April | 621 | 414 to 1,090 | |
| May | 357 | 234 to 612 | |
| June | 144 | 83 to 278 | |
| July | 78 | 47 to 133 | |
| August | 44 | 28 to 103 | |
| September | 41 | 25 to 75 | |
| October | 95 | 40 to 187 | |
| November | 160 | 102 to 304 | |
| December | 168 | 108 to 298 |
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 45 years of record. Statistics published by the US Geological Survey for Ellis River at South Andover, Maine (site 01054300). 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 West Branch Ellis 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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