About this river
Chattahoochee River is a 5.3 mile stream near The Modern Fly Fishers in Georgia. Streamflow is measured at the USGS gauge Chattahoochee River at Helen, GA (site 02330450). The National Hydrography Dataset places it at stream order 4. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1981 to 2026
Chattahoochee River typically runs highest in March, at a median 170 cfs, and lowest in September, at 55 cfs. The highest flow on record for any single day is 2,040 cfs, in 2018.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 143 | 98 to 200 | |
| February | 157 | 104 to 220 | |
| March | 170 | 118 to 227 | |
| April | 161 | 117 to 225 | |
| May | 126 | 90 to 168 | |
| June | 92 | 71 to 134 | |
| July | 72 | 55 to 103 | |
| August | 59 | 43 to 98 | |
| September | 55 | 40 to 91 | |
| October | 64 | 41 to 97 | |
| November | 71 | 53 to 116 | |
| December | 108 | 68 to 180 |
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 Chattahoochee River at Helen, GA (site 02330450). 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 Chattahoochee 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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