Written by Jason Swingen, Updated

The rivers are currently frozen. Many of the guages will not show accurate information. Please check back in the spring!

The latest rivers flow data from all of the major North Shore Tributaries of Lake Superior. See the current (real-time) flow data from the Sucker, Knife, Baptism, Poplar, and Arrowhead Brule all on one page! You can also view all 5 rivers in a single chart. If you need help understanding this data you can learn how to read these charts below.

North Shore River Gauges


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This is the latest river flow data as of:


Sucker River Flow


Knife River Flow


Baptism River Flow


Poplar River Flow


Brule River Flow


Brule River Flow


*Data courtesy of the Minnesota DNR and USGS.

How To Read These Charts

Each river on the north shore will react differently to rain events. Depending on the location, duration, and size of the watershed. Generally the larger rivers like the Knife, Baptism, and Brule will increase flows more significantly after it rains. Because of their larger size they will also be fishable at an overall higher cfs (cubic feet/second) since there is a wider area for the water to flow.

During the Spring and Fall you should look for increases in flow followed by a steady decline. Migratory fish need these high flows in order to be able to swim up the rivers, however the increased flow rate will make it difficult to get your fly down to where the fish are. The high flow rates will also make the rivers dirtier. The clarity and flow will often have a strong correlation.

When the charts show that the current flows are below the “Too Low” level they will show up in yellow. High flows are shown in red, and flows that are considered ideal levels to fish in are shown in green. Since fish usually enter river after high flows the best time to fish in when the river flows are within the fishable zone and decreasing in flow (shown in thick green lines).

You can also view the river flows on their individual MNDNR and USGS pages: