South Fork Sun River near Augusta

Is this flow normal for August 18?

Today's 104 cfs is Right about the median for this date — which counts as normal water here.

The median flow on this date is 108 cfs, across 114 years of USGS record at this gauge. Whether that is runnable depends on the stretch — this is context, not a recommendation.

Why this score

• Wind — 6 mph — calm, ideal for any boat±0
• Cold — 55°F — dress for the water, not the air-8

We don't have launch notes for this one

This page is built from the USGS gauge at this location, so the flow and weather are real — but we haven't verified where to put in, what the hazards are, or whether this stretch is legal or sensible to paddle. We'd rather say that than invent it. The links below are where to find out.

We also don't have a verified safe-flow range here, so the Paddle Score reflects weather only. Judge the flow number against local knowledge, not against our score.

Do your own homework

We show you live conditions. For local knowledge — where to put in, what the hazards are, whether it's worth the drive — here's where paddlers actually talk about this water. We don't vet these sources; check the dates and judge for yourself.

• Paddler discussion on Reddit ↗

  Trip reports and local warnings, straight from the source

• Search American Whitewater ↗

  Rapid classifications and gauge-linked run descriptions

• Satellite view and access roads ↗

  Check parking, put-ins, and what the banks actually look like

• Video from this water ↗

  The fastest way to see the character of a run before you drive

• USGS gauge 06079000 ↗

  Full hydrograph, historical flows, and station metadata

Nearby water

• North Fork Sun River near Augustaunder 1 mi
• Sun River below Diversion Dam near Augusta8 mi
• Teton River below South Fork near Choteau21 mi
• Sun River below Willow Creek near Augusta24 mi
• South F Flathead River above Twin Creek near Hungry Horse40 mi
• Birch Creek below Heart Butte Road, near Heart Butte43 mi