Missouri · Alton, MO
Eleven Point River float season
Gauge 07071500 on the Greer Spring access to Riverton along the Irish Wilderness. Greer Spring roughly doubles the river's flow and keeps the fern-draped Irish Wilderness stretch cold, misty, and floatable all summer.
Right now at this gauge
loading CFS
Checking the live gauge…
Well above typical for this date
Live reading from the USGS gauge page for Eleven Point River. Provisional data — subject to revision.
The year on this river
In a typical year at the Alton gauge, the Eleven Point River runs fullest Mar–May and leanest Sep–Nov. Where today's reading falls inside that rhythm matters more than the raw number — the same flow that feels thin in spring can be the summer norm. Half of all past May days at this gauge ran above 1,020 CFS; the October median is 380 CFS.
| Month | Typical flow (CFS) | Relative volume |
|---|---|---|
| January | 590 | |
| February | 669 | |
| March | 885 | |
| April | 1,015 | |
| May | 1,020 | |
| June | 763 | |
| July | 584 | |
| August | 484 | |
| September | 407 | |
| October | 380 | |
| November | 404 | |
| December | 475 |
Record context
This gauge has measured daily flow since 1922 — 104 years of record. The largest daily average ever logged here was 78,400 CFS, in April 2017. Rivers do that sometimes; it's why the safety panel above isn't decoration.
Planning dates? The trip-window checker shows what flows have historically looked like on any week you pick for this river, or see what a CFS actually looks like.
More Missouri float rivers
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Fullest: Mar–May
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Jacks Fork River
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Meramec River
Bird's Nest and Garrison's accesses near Steelville down to Onondaga Cave
Fullest: Mar–May
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Niangua River
Bennett Spring State Park corridor near Lebanon
Fullest: Mar–May
Common questions
When is the Eleven Point River usually at its fullest?
At the Alton gauge, the fullest stretch of a typical year is Mar–May, with the single highest monthly median in May (about 1,020 CFS). The leanest months are usually Sep–Nov.
What is a typical summer flow on the Eleven Point River?
The July median at this gauge is about 584 CFS — half of past Julys ran higher, half lower. Check the ribbon chart above to see how summer compares with the rest of the year here.
Is the Eleven Point River safe to float right now?
No flow number can answer that, and this site never labels a river safe. What the data can tell you is how today's reading compares with 105 years of this date's history — well above typical means pushier, colder, faster water. Pair that context with a PFD, a look at the river from the bank, and a call to a local outfitter before you commit.
Which USGS gauge does this page use?
USGS gauge 07071500 (Eleven Point River near Bardley, MO), chosen because it best represents the Greer Spring access to Riverton along the Irish Wilderness. Daily records here reach back to 1922.
Data: USGS gauge 07071500, approved daily records 1922–2026, retrieved 2026-08-07. Live readings are provisional and subject to revision. U.S. Geological Survey data is public domain.