Recent flow
Discharge
Latest reading: 1,500 cfs. Stable over about 6 hours. Chart covers Sep 5 through Sep 12; readings are provisional and may be revised.

Photo: The original uploader was The.dharma.bum at English Wikipedia . Opens in a new tab. · CC BY-SA 2.5
No single best way to fish. Wading, Bank fishing, and Floating have the same top score. Use current access, footing, weather, and local rules to choose.
Rating updatedRiver local time:
USGS shows 1,500 cfs. The flow has been stable over about 6 hours. USGS marks this reading provisional and may revise it. USGS records for this date (1902-2025, 119 readings) show a median near 2,570 cfs and the lower quartile near 1,810 cfs; today's flow is below normal for the date. This is below normal, so edge depth, temperature, and pressure matter.
NWS air forecast near
Discharge
Latest reading: 1,500 cfs. Stable over about 6 hours. Chart covers Sep 5 through Sep 12; readings are provisional and may be revised.
Chance Showers And Thunderstorms
The National Weather Service forecast is temporarily unavailable.
Current U.S. Geological Survey gauge: St. Croix River at St. Croix Falls
Seasonal starting points, not a live hatch report. Match what you see on the water.
Also try sliders, damselfly nymph
Also try nymph under indicator
Each fly name opens its matching Fly Box guide.
Stable, clear summer and early-fall flows are best for smallmouth poppers, crayfish, and baitfish patterns. High water pushes fish to edges and can make wading or paddling unsafe.
Fish topwater early, then crayfish and baitfish along rock and current breaks.
Avoid pushy wading. Fish protected banks, backwaters, or postpone the float.
Look for depth, shade, spring influence, and less-disturbed fish.
Use sheltered reaches or smaller craft plans. Do not cross wide water casually.
Wading, Bank fishing, and Floating have the same top score. Use current access, footing, weather, and local rules to choose.
Wading is in play only where your chosen access has clear footing, legal entry, and no forced crossings.
Bank and edge fishing remains a practical low-commitment option if access is legal and footing is safe.
A float is in play where this report supports boat access and wind, releases, and shuttle logistics are manageable.
Is St. Croix River worth the trip today? Check flow, weather, hatches, access, and rules for Minnesota before you go.
The St. Croix can be a top Minnesota fly-fishing river for smallmouth and warmwater species, but it is also a National Scenic Riverway and boundary water. Check flow, rules, maps, and access first.
USGS shows 1,500 cfs. The flow has been stable over about 6 hours. USGS marks this reading provisional and may revise it. USGS records for this date (1902-2025, 119 readings) show a median near 2,570 cfs and the lower quartile near 1,810 cfs; today's flow is below normal for the date. This is below normal, so edge depth, temperature, and pressure matter.
The forecast has storm or heavy-precipitation risk, so timing and access matter more than the score alone.
Fall: Cooling water and baitfish movement can make streamers and bigger flies productive.
USGS water temperature is about 72.1F, and the rolling 24-hour high did not trigger a heat caution. USGS marks the temperature data provisional and may revise it.
No active NWS alert was returned for this forecast point.
Use USGS 05340500 at St. Croix Falls as the primary trend for this report, then check the specific landing, riverway map, and weather for the reach you plan to fish.
Skip or shorten the trip when flows are high, wind makes open water unsafe, rapids exceed the craft plan, cold water raises swim risk, or boundary-water rules are unclear.
Choose a reach first: St. Croix Falls and Taylors Falls for upper-river structure, NPS riverway landings for floats, or lower river access only after checking boat traffic and wind.
If the St. Croix is high, windy, crowded, or rule-complicated, compare the Mississippi for larger warmwater options or Whitewater and Root system streams for trout water.
Use these places as starting points. Open the access link below and check posted signs before you park or enter.
Minnesota and Wisconsin boundary-water rules, plus NPS riverway guidance, can affect legal fishing and access. Check the current rule PDF and riverway information before fishing.
Primary flow and upper-river planning area.
Use NPS maps and fishing guidance for access and riverway rules.
Bigger water with more boat traffic and different safety planning.
Official agencies and primary river operators come first. Secondary tools are labeled so you know what carries the most weight.
Check what is allowed, where the rule applies, and whether the river is open.
Check the latest river reading and forecast before you leave.
Check public entry points, land rules, and seasonal access changes.
Check what is allowed, where the rule applies, and whether the river is open.
Open the current rules and check the river section, season, and special limits.
Open the current rules and check the river section, season, and special limits.
Check the latest river reading and forecast before you leave.
Open this page and check the latest safety advice before your trip.
Open this river reading to check the latest level, flow, and update time.
Check public entry points, land rules, and seasonal access changes.
Open the land or access page, then check signs before you park or enter.
Open the land or access page, then check signs before you park or enter.
What was checked: This report is maintained from current regulation, access, flow, weather, and public planning sources so anglers can make better trip decisions than a raw gauge or generic overview would allow.
Live measurements and forecasts keep their provider timestamps. Rules, access, and trip guidance use the source-review date shown here. BlueStreamFly planning advice is editorial interpretation, not an agency notice.
First-hand experience: BlueStreamFly does not claim a first-hand visit or local field test for this report unless a real contributor is explicitly named and linked.
Check St. Croix Falls flow, NPS riverway maps, Minnesota/Wisconsin boundary rules, weather, and launch conditions.
Yes. Boundary-water and riverway rules can matter, and seasons or harvest can vary by species.
Yes, if you match the reach, season, target species, water temperature, and current access rules. This report is built to help you choose that plan.
Bring the hatch-chart flies, confidence nymphs, and a backup streamer or warmwater box so you can adjust to flow, clarity, and temperature.
Use official NPS, state, and local landings. Plan floats conservatively around rapids, wind, and boat traffic.