Seepage is slow, quiet water, and that is why it does so much harm. It wets wall bottoms and carpet edges for days before anyone notices a stain.
Why spring brings it
The watershed district says lake levels are driven mainly by precipitation, including spring snowmelt. The outlet channel helps relieve levels above 902.5 feet, but wet ground still presses against foundations, and runoff keeps arriving after the rain has stopped.
- Damp patches along the base of a wall
- A musty smell that returns after the fan is off
- Carpet edges that stay cool and damp
How the crew handles it
Moisture mapping comes first, because the wet area is usually larger than the visible stain. Carpet edges are lifted, lower drywall and insulation on outside walls come out if they are wet, and structural drying continues until readings match a dry wall. Finished basements hide the problem longest, because paneling, carpet and furniture keep the wall out of view, and a moisture check behind a baseboard or under a carpet edge shows whether the seepage has run for days or weeks.
Stopping a repeat
Drying fixes the damage, not the entry. The crew points out cracks, window wells and grading clues that match the wet pattern, so a contractor can address the cause. Window wells that fill, grading that slopes toward the foundation and cracks that open as frozen ground shifts are the usual suspects, and a dehumidifier fixes none of them.