Grand River in Michigan
Around here
Around Grand River
Public land: USGS PAD-US
About this river
Grand River is a 62.1 mile river. Streamflow is measured at the USGS gauge Grand River at Portland, MI (site 04114000). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1952 to 2026
Grand River typically runs highest in March, at a median 1,850 cfs, and lowest in September, at 349 cfs. The highest flow on record for any single day is 12,200 cfs, in 1975.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 784 | 485 to 1,410 |
| February | 814 | 484 to 1,540 |
| March | 1,850 | 1,230 to 2,600 |
| April | 1,765 | 1,230 to 2,385 |
| May | 1,230 | 891 to 1,820 |
| June | 748 | 482 to 1,220 |
| July | 442 | 320 to 767 |
| August | 378 | 269 to 594 |
| September | 349 | 238 to 545 |
| October | 421 | 288 to 716 |
| November | 627 | 376 to 978 |
| December | 765 | 491 to 1,240 |
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 68 years of record. Statistics published by the US Geological Survey for Grand River at Portland, MI (site 04114000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
8 mapped launches sit in the mapped area of Grand 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 Grand River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
See every free widget you can put on your site, including live conditions and a 7 day forecast.
