French River conditions right now
Live flow and water temperature straight from the USGS gauge, so you know whether it is worth the drive before you make it.
Loading · USGS gauge 04015330
Read this as an indicator, not as French River's own flow. Knife River indicator. Use it for trend and clarity, not as an exact number for this water.
How to read that number
The absolute flow matters less than which way it is going. A river at its peak is usually unfishable and a river a day past its peak is usually excellent, even though the number at the peak and the number on the way down can be identical. Falling water that still carries a little color is the best water there is.
Clarity decides what you tie on. When you can see a foot or more down, go longer and lighter: a longer leader, smaller flies or beads, more natural colors. When the water is stained and you can only see a few inches, go bigger and brighter so the fish can find it. Flow only tells you whether you can fish at all. Clarity tells you what to fish.
Water temperature decides whether they will chase. Steelhead are most active from roughly 42 to 55 degrees. Below 40 they hold tight in the slow, deep water and want the fly drifted right to them, so slow down and fish the tailouts and inside seams. That is the single most useful thing a thermometer tells you. Not every gauge has a temperature sensor, so a stream thermometer in the vest is worth it.
Pick French River in the app and it pulls this same gauge, then builds the rod, reel, line, leader, tippet and the flies or lures to match what the water is doing today. It needs a signal to read the gauge, so check it before you drop into the valley.
Other Minnesota rivers
Minnesota's North Shore streams are small, cold and steep, mostly fed by snowmelt and rain rather than dams. They come up and drop quickly, and several share a single reference gauge.