About this river
Little Sac River is a 13.7 mile river near Fellows Lake Marina in Missouri. Streamflow is measured at the USGS gauge Little Sac River near Morrisville, MO (site 06918740). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1969 to 2026
Little Sac River typically runs highest in April, at a median 215 cfs, and lowest in September, at 20 cfs. The highest flow on record for any single day is 20,900 cfs, in 2016.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 101 | 45 to 232 | |
| February | 149 | 61 to 277 | |
| March | 215 | 95 to 481 | |
| April | 215 | 107 to 405 | |
| May | 179 | 84 to 388 | |
| June | 112 | 42 to 244 | |
| July | 42 | 20 to 91 | |
| August | 21 | 12 to 44 | |
| September | 20 | 12 to 50 | |
| October | 33 | 15 to 85 | |
| November | 53 | 23 to 180 | |
| December | 95 | 35 to 212 |
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 58 years of record. Statistics published by the US Geological Survey for Little Sac River near Morrisville, MO (site 06918740). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Little Sac 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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