Every summer month for the last 16 years, Dick and Judi Oehler have been coming to this exact spot on the Deerskin River east of Eagle River.
Like always, Judi stands on shore, ready with a clipboard, as Dick steps into the stream. Waders cover him to his chest.
The river is about 20 feet across here, and the water comes up to his knees.
Plunging a yard stick to the sandy bottom, Dick calls out water depths as Judi records them.