A gauge two miles above the split
USGS 05124480 is not at a bridge you can drive to. The station description puts it 14 miles east of Ely, 2.2 miles southwest of the Fernberg lookout tower, on the left bank above a set of rapids and 2 miles upstream of where the South Kawishiwi River leaves the main river, with 254 square miles of lake country above it. That places it on the Kawishiwi below the Lake One chain and above the fork into the North and South Kawishiwi rivers, inside the Boundary Waters Canoe Area Wilderness, which is why it is the only gauge on the hub for this river and why the number moves so slowly: this is a river that drains a chain of lakes, and it rises and falls like one.
The record since 1966 shows that shape. Monthly means run about 87 cfs in January, 66 in February, 58 in March, 230 in April, 621 in May, 365 in June, 218 in July, 133 in August, 108 in September, 128 in October and 134 in November. Nobody publishes a fishable range for it, so the 100 to 350 cfs band here is the June-through-October envelope of the record. Below 100 the rapids between lakes become rock gardens and the portages get used more; the May peak is snowmelt and the fastest current of the year at every rapids and portage landing.
Permits first: the quota season and the nine-and-four rule
A permit is always required to enter the Boundary Waters, and the Friends of the Boundary Waters lay out the tiers plainly. From May 1 through September 30 every overnight trip, paddle, motor or hiking, needs a quota permit for a specific entry point and entry date, and you may enter only on that date and at that point. Day trips without a motor are covered by a self-issued permit filled out at the entry-point kiosk, and so are overnight trips from October 1 through April 30. One permit is issued per group, and a group is never more than nine people and four watercraft together in the wilderness. Overnight quota permits cost 16 dollars per adult and 8 per child, with a 32 dollar deposit and a nonrefundable 6 dollar reservation fee at booking through Recreation.gov, and the whole quota season goes on sale at once in late January.
For the Kawishiwi the entry points that matter are the ones the Friends list for their routes: Lake One, the North Kawishiwi River and the South Kawishiwi River, all east of Ely, plus Kawishiwi Lake at the far upstream end for the long way in. The Friends' route library includes a loop through what they call the Kawishiwi Triangle and a one-way trip that exits at the South Kawishiwi River entry, number 32.
Lake One down to the fork, then eight miles of South Kawishiwi
BWCAWild's page on the South Kawishiwi describes the fork: just under a mile below the Triangle Lake portage, and about three quarters of a mile below the portage up to the entry point 29 parking lot, the Kawishiwi splits into the North and South Kawishiwi rivers. From the split to where the South Kawishiwi leaves the wilderness just below the portage to the entry point 32 lot is about 8 miles. The portages off that reach are short: 20 rods to Bruin Lake, 70 to Clear Lake, 85 to Eskwagama, 122 to Little Gabbro, 15 back to the main Kawishiwi, and 147 rods up to the entry point 32 parking lot. Campsite 1696 is the closest site to the entry 32 landing. The page lists northern pike and walleye as the river's fish.
The Friends' one-way route from Isabella Lake to the South Kawishiwi is the long version: 29 miles, 14 portages totaling 1,057 rods with a 278-rod carry between Gabbro and Bruin, and river camps on the Isabella that are rare in a wilderness where most sites are on lakes. Quadga Lake along the way has four campsites and, in the Friends' words, good walleye and pike. Bald Eagle and Gabbro lakes come next, then the 13-rod hop from Bruin into the South Kawishiwi and the paddle down to the 140-rod portage out.
Northeast Zone rules: walleye, the pike slot and a later bass opener
The Kawishiwi is inland water in Minnesota's Northeast Zone, and the 2026 regulations set walleye and sauger open from May 9, 2026 through February 28, 2027 with six combined and only one walleye over 20 inches in possession. Northern pike in the Northeast Zone are two fish, with only one over 40 inches and every pike from 30 to 40 inches released immediately. Largemouth and smallmouth in the Northeast Zone are catch and release from March 1 through May 8 and open from May 9, 2026 through February 28, 2027, six combined, a simpler calendar than the southern zone's September closure. Lake trout in lakes entirely within the BWCAW have a winter season from January 1 through March 31 and a summer season from May 9 through September 30 with a limit of two.
Two BWCAW notes from the same book: an ice shelter may be used but must be removed from the ice each night and each time you leave the wilderness, and the DNR's Voyageurs artificial-bait rule applies to that park's interior lakes, not here. Standard Minnesota tackle rules apply, one line per angler on inland waters, and a Minnesota license is required for everyone 16 and older. The Forest Service's own wilderness rules on containers, campsites and fires ride on top of the fishing regulations and are printed with the permit.
What eats what, month by month
No one publishes a hatch or forage chart for the Kawishiwi, so the table on this page is built the way the guides fish it: jigs and minnow patterns for walleye from the May 9 opener through June at the rapids and the current mouths where the river enters each lake, leeches and crawler harnesses once the water warms, crayfish and topwater for smallmouth from June into September along the rock, and big streamers and spoons for pike all season with the fall the best of it. The Friends' descriptions of walleye and pike on Quadga and BWCAWild's fish list for the South Kawishiwi are the only published species notes for the river itself; smallmouth reports come from angler apps and are not relied on here beyond the fact that the fish are present.