Around here
Around Grass River
Nature2
Source: Canadian Geographical Names Database (NRCan), Open Government Licence - Canada
About this river
Grass River is a 48.7 mile river. Streamflow is measured at the Water Survey of Canada gauge Grass River above Standing Stone Falls (site 05TD001). Reach geometry comes from Natural Resources Canada's National Hydro Network.
Typical flow by month
1915 to 2025
Grass River typically runs highest in July, at a median 3,673 cfs, and lowest in April, at 1,097 cfs. The highest flow on record for any single day is 9,076 cfs, in 2020.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 1,670 | 1,232 to 2,419 |
| February | 1,381 | 1,021 to 1,971 |
| March | 1,151 | 961 to 1,635 |
| April | 1,097 | 942 to 1,392 |
| May | 1,730 | 1,294 to 2,393 |
| June | 3,099 | 1,755 to 4,322 |
| July | 3,673 | 2,310 to 4,662 |
| August | 3,221 | 2,696 to 4,238 |
| September | 2,820 | 2,091 to 3,726 |
| October | 2,599 | 1,766 to 3,337 |
| November | 2,161 | 1,506 to 3,313 |
| December | 1,879 | 1,353 to 3,026 |
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 Grass River above Standing Stone Falls (site 05TD001). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Made to print
Put Grass River on your wall
This river section as an art print, drawn over the real terrain with its miles, plus the trails, roads and peaks around it. Pick the colors and the size, and see the finished print before you buy. From $39, shipping included.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Grass 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.
