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Big River — reach near Byrnesville: River Level Today — Can You Paddle It?

Class I8 mi · ~4 hrBig RiverMissouri

Verdict · updated Aug 26, 6:45 AM UTC

Good to paddle

Levels are within the typical runnable range for this section.

Estimated range

226 cfs

2.4 ft gauge height

USGS gauge 07018500

Runnable 802,500 cfs

226 cfs, within the runnable range of 80 to 2,500 cfs
0802,5002,984

What this means today

At 226 cfs the Big River is inside the runnable range but only 146 cfs above the 80 cfs floor, so it is sitting at the shallow end of what this reach runs at. A dry few days would take it under.

Over the last 24 hours it has gone from 251 cfs to 226 cfs, 10% down. Daily means over the past 6 days have run between 201 cfs and 323 cfs, 33% higher at the end of the week than the start. The last day and the week as a whole point opposite ways, which usually means a recent rain bump on top of a longer rising trend — worth a second look at the chart before you commit to the drive.

Paddling reach near Byrnesville

Big River at reach near Byrnesville is a 8-mile Class I run in Missouri — easygoing moving water with light riffles and nothing technical. Most paddlers put in at upstream access and take out at Byrnesville area, a trip that runs about 4 hours at a relaxed pace.

Whether it's worth the drive comes down to flow. This section generally paddles well at 80–2,500 cfs (a conservative estimate — see our methodology). Much below that and the Big River gets low and bony, so you end up scraping gravel and walking the shallows; well above the top of the range it turns fast, cold and pushy, which is a more serious day than most casual boaters want. We read USGS gauge 07018500 about every 30 minutes and compare the live number to that window, so the verdict at the top of this page reflects conditions right now rather than a monthly average.

Flows here are usually most dependable April–October. Spring can run high after rain or snowmelt, and late summer often drops too low to float well — but the gauge always beats the calendar, so check today's reading before you go.

7-day flow trend

2,500802,74202026-08-19Today
Daily mean flow (cfs), past 7 days. Shaded band = runnable range.

Section facts

Difficulty
Class I
Length
8 mi
Float time
~4 hr
Best months
April–October
Put-in
upstream access
Take-out
Byrnesville area

Reading USGS gauge 07018500 — Big River at Byrnesville, MO · runnable range is an estimate (see methodology)

FAQ

What water level is good for paddling Big River — reach near Byrnesville?
This section is generally runnable at 80–2,500 cfs (a conservative estimate — see our methodology). Below that it gets too low and bony; well above the top of the range it becomes pushy and then dangerous. We compare the live USGS reading to that range to produce today's verdict.
How do I check Big River levels?
We read USGS gauge 07018500 — the same public data USGS publishes — about every 30 minutes and compare it to the runnable range for this reach. You can also view the raw gauge yourself at waterdata.usgs.gov.
Is Big River — reach near Byrnesville good for beginners?
This section is rated Class I. At good levels it suits confident beginners and up, but it can have riffles or small rapids. Scout anything you can't see, and stay off it at high water.
When is the best time to paddle Big River here?
Typically April–October, when flows are most reliable for this section. Spring can run high after rain or snowmelt; late summer can drop too low. Always check today's gauge reading rather than assuming.
How long does it take to float Big River — reach near Byrnesville?
This reach is about 8 miles, roughly 4 hours at a relaxed pace. Higher water is faster; low water and headwinds are slower. Add time for stops.

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