Shiawassee River in Michigan
Around here
Around Shiawassee River
Public land: USGS PAD-US
About this river
Shiawassee River is a 62.1 mile stream. Streamflow is measured at the USGS gauge Shiawassee River near Fergus, MI (site 04145000). The National Hydrography Dataset places it at stream order 4. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1940 to 2026
Shiawassee River typically runs highest in March, at a median 830 cfs, and lowest in September, at 103 cfs. The highest flow on record for any single day is 7,290 cfs, in 1947.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 295 | 162 to 550 |
| February | 300 | 193 to 560 |
| March | 830 | 518 to 1,340 |
| April | 756 | 491 to 1,125 |
| May | 424 | 281 to 735 |
| June | 252 | 152 to 400 |
| July | 143 | 96 to 237 |
| August | 110 | 77 to 162 |
| September | 103 | 68 to 188 |
| October | 131 | 89 to 229 |
| November | 233 | 148 to 394 |
| December | 282 | 165 to 529 |
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 65 years of record. Statistics published by the US Geological Survey for Shiawassee River near Fergus, MI (site 04145000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
5 mapped launches sit in the mapped area of Shiawassee River, all of them public access. 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 Shiawassee 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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