Rivers, Tubing & Water Safety
Reading river levels
A river's mood is set by its level. Learn to read the gauge before you leave home and you'll know whether today's trip is an easy float or one to skip — it's the single most useful safety check you can make.
The two numbers a gauge gives you
A USGS gauge gives you two numbers. Stage (gauge height) is how high the water is, in feet. Discharge (flow) is how much water is moving, in cubic feet per second (cfs) — the higher the cfs, the faster and pushier the water.
Current & Jacks Fork
The National Park Service publishes a river-level table and generally closes the Current and Jacks Fork to non-motorized vessels at about 2 feet above normal — and sometimes earlier if the water is rising or rain is coming.
Every other river
Most rivers don't have a published closure level. They rely on the USGS gauge trend, the National Weather Service forecast, outfitter advice, and any county or local closures. High, fast, muddy, or rising water is a no-go even before any formal closure.
Watch the weather upstream, too
Read the NWS forecast — and remember that a storm upstream can flood your stretch hours later. Flash floods are the deadliest river hazard, because the water can rise in minutes.
Tools for checking the level
Tools: USGS Current Water Data for Missouri, USGS WaterAlert, the DNR streamgage and flooding pages, and the NPS river-level page.
The one rule of thumb
The rule of thumb: high, fast, muddy, or rising means don't go.
If the water is high
Don't negotiate with high water
Don't negotiate with high water. If the river is high, muddy, fast, rising, near closure level, or under a flood watch, cancel — or pick a lake or a dry-land backup. Outfitters want repeat customers, not rescues.
This page is about reading the water before you go. For motorboats — registration, the boater card, motorboat equipment, or the boating-while-intoxicated law — see the Boating hub.
Before you float
Missouri Porch explains; the people who run the river decide.
Last checked: 2026-06-18. Rivers change by the day — the level, the weather, and the water-quality advisories are different every time. Check the live gauge and the forecast before every float, and wear your life jacket.
This is a plain-English summary — not the law, a medical authority, or a substitute for a guide or a swiftwater course. River levels, rules, and advisories change — check the live gauge, the forecast, and the agency or outfitter before you float. In an emergency, call 911.
Heads up: A gauge reading is a snapshot for one spot at one time. Check it the day you float, watch for rain upstream, and call your outfitter — and if the water is high, fast, muddy, or rising, don't go.
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