Around here
Around East Branch South Grand River
Data Source: Recreation.gov · Public land: USGS PAD-US
About this river
East Branch South Grand River is a 20.9 mile river near Lake Jacomo Marina in Missouri. Streamflow is measured at the USGS gauge South Grand River at Archie, MO (site 06921590). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1970 to 2026
East Branch South Grand River typically runs highest in April, at a median 140 cfs, and lowest in September, at 8.0 cfs. The highest flow on record for any single day is 25,500 cfs, in 2007.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 44 | 13 to 118 |
| February | 71 | 23 to 186 |
| March | 128 | 48 to 319 |
| April | 140 | 56 to 283 |
| May | 130 | 50 to 405 |
| June | 57 | 21 to 231 |
| July | 16 | 4.5 to 70 |
| August | 10 | 2.4 to 27 |
| September | 8.0 | 2.8 to 30 |
| October | 9.5 | 2.8 to 97 |
| November | 28 | 9.1 to 74 |
| December | 39 | 12 to 104 |
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 36 years of record. Statistics published by the US Geological Survey for South Grand River at Archie, MO (site 06921590). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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