BirdTrout

Sioux River, Wisconsin

14.2 mapped river miles, draining 71 square miles, in the Nemadji basin watershed. No gauge stands in it; the nearest is 13.0 miles away, and what this page knows about its temperature is Wisconsin DNR's classification of the water itself.

Open in BirdTrout →

Public land — where the bank is open to walk and fish

USGS gauge — live water temperature

Water temperature — the colour of the river, and of every dot on it

58 64 70

50°F and colder is cold, through cold-transitional and cool, to warm above 70°F — the same four bands, breaking at 58, 64 and 70°F, that the app paints. Grey is water nobody has measured.

The nearest live reading

The nearest gauge is 18.8 miles away, at Bad River Near Odanah, Wi — not a reading of this water, but of what the region is doing today. A closer gauge has stopped reporting — USGS carries no water-temperature series for it at all, so no number here comes from it.

Thermal classification

Wisconsin DNR's classification of this water, reach by reach. A class, not a temperature — no July mean, because none was measured here.

Wisconsin DNR has classified 18.6 of the 18.7 miles NHD carries for this stream — 100% of it. Every typed reach carries the same class, cold. The untyped reaches are not warm water — they are water Wisconsin DNR's inventory does not reach, and the mile ranges above span only the reaches it does.

The lake run

The Sioux River is a Lake Superior tributary with 15.3 miles of run corridor on it — salmon, steelhead and lake-run brown trout, on their own calendar and under their own rules. Run timing, species and access on the Sioux River →

Questions about this river

• Sioux River fishing report — what it reads right now
• When to fish the Sioux River — hatches, seasons and temperature
• How to get to the Sioux River — access, parking and public land
• Sioux River fishing regulations — season, size and gear by reach

Wisconsin DNR classification

Wisconsin DNR classifies this water as Class I and Class II. More than one class appears because the classification changes along the river. The thermal bar above shows where. The management tier on those reaches is wild, wild supplemented. This is a designation of the fishery, not the season and creel rules — those change yearly and live with the agency.

WDNR trout stream classification →

Public land on the river

2 units of public or open-access land touch this river, 8,728 acres in total. Acreage is the whole unit, not the part beside the water.

Species

Wisconsin DNR designates this as trout water — Class I, Class II — without naming the species. No fish survey or stocking record for this water is in the files this site reads.

Hatches on this water

42 insects are recorded from northern Wisconsin, which is the region this river sits in. That is a claim about the region and not a survey of this stream: nobody has recorded which of them has been caught here. Open the river in the app and the hatch panel will narrow it to the ones whose temperature window today's reading is inside.

And 28 more — the year-round records, mostly: midges, scuds and sculpins, which are in the water every day and are therefore never the news.

Tributaries and watershed

1 named stream meets this one. Confluence miles are above the mouth; the longest twelve are listed.

• Fourmile Creek 7.2 mi · RM 3.7

Sioux River sits in HUC 8 04010301, the Nemadji basin, and drains 71 square miles, Strahler order 4 at the mouth. 39 NHD reaches carry the name for 18.7 miles in total — more than the 14.2 miles of drawn mainstem, because NHD counts side channels and braids as their own reaches.

Other water nearby

The closest 6 rivers on this site, straight-line from the middle of this one — not drive time.

• Fourmile Creek 0.3 mi
• Thompson Creek 2.2 mi
• Little Sioux River 2.5 mi
• Onion River 3.1 mi
• Bono Creek 3.1 mi
• Pikes Creek 3.1 mi