River Gauges (current)
River Flows (last 7 days)
River Flows (last 14 days)
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! If you need help understanding this data you can learn how to read these charts below.
Poplar River Flow
Brule River Flow
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: