About this river
Kaskaskia River is a 79.2 mile river near Precision Fishing Guide Service in Illinois. Streamflow is measured at the USGS gauge Kaskaskia River at Vandalia, IL (site 05592500). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1970 to 2026
Kaskaskia River typically runs highest in March, at a median 2,060 cfs, and lowest in October, at 103 cfs. The highest flow on record for any single day is 48,100 cfs, in 2016.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 1,890 | 742 to 3,600 | |
| February | 1,900 | 732 to 3,950 | |
| March | 2,060 | 1,050 to 4,220 | |
| April | 1,905 | 854 to 3,540 | |
| May | 1,310 | 432 to 2,600 | |
| June | 1,275 | 487 to 2,265 | |
| July | 1,290 | 434 to 2,000 | |
| August | 658 | 114 to 1,510 | |
| September | 171 | 72 to 593 | |
| October | 103 | 64 to 667 | |
| November | 321 | 87 to 1,030 | |
| December | 1,270 | 181 to 2,300 |
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 57 years of record. Statistics published by the US Geological Survey for Kaskaskia River at Vandalia, IL (site 05592500). 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 Kaskaskia River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Vandalia LakeVandalia LakePublic
- Carlyle LakeCarlyle LakePublic
- Carlyle LakeCarlyle LakePublic
- Carlyle LakeCarlyle LakePublic
- Lake NellieLake NelliePublic
- Ramsey LakeRamsey LakePublic
- Kinmundy ReservoirKinmundy ReservoirPublic
- Carlyle LakeCarlyle LakePublic
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Kaskaskia 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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