About this river
Saint Joseph River is a 2.4 mile river near Wawasee Boat Company, Inc. in Indiana. Streamflow is measured at the USGS gauge ST. Joseph River at Mottville, MI (site 04099000). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1924 to 2026
Saint Joseph River typically runs highest in April, at a median 2,580 cfs, and lowest in September, at 877 cfs. The highest flow on record for any single day is 10,800 cfs, in 2018.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 1,650 | 1,100 to 2,270 | |
| February | 1,700 | 1,220 to 2,440 | |
| March | 2,450 | 1,840 to 3,260 | |
| April | 2,580 | 1,885 to 3,280 | |
| May | 1,980 | 1,500 to 2,740 | |
| June | 1,470 | 1,050 to 2,190 | |
| July | 1,010 | 722 to 1,520 | |
| August | 883 | 632 to 1,230 | |
| September | 877 | 633 to 1,150 | |
| October | 988 | 789 to 1,320 | |
| November | 1,265 | 919 to 1,710 | |
| December | 1,460 | 1,050 to 2,000 |
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 103 years of record. Statistics published by the US Geological Survey for ST. Joseph River at Mottville, MI (site 04099000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
One mapped launch sits in the mapped area of Saint Joseph River. Ramp data comes from the USGS national boat-ramp inventory.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Saint Joseph 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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