Lake Bottom
The lake bed consists of sand, small stones, boulders and marl. The marl, is a calcium carbonate deposit that buffers the acid in the lake. Despite appearing as a murky bottom it is not pollution.
CLAA has created a walleye spawning reef by adding fresh stone to sanely areas as part of our continuing efforts to improve fish habitat.
Wetlands
The wetlands that surround much of the lake both filter pollutants from our water and reduce erosion. They are vital for lake health and should be preserved.
Bulrushes
The ''weeds" visible along and parallel to the shore are mostly bulrushes. They have a deep root system and stabilize the lake bottom, provide shoreline protection from erosion and provide habitat for beneficial species. They should be protected and not disturbed.
Reduce Impermeable Surface
These include buildings, patio, packed ground and driveways. Discuss with your builder how to limit these spaces and options to ameliorate their effect.
Nature's Alternative to a Lawn
Lawn grass lacks the deep, complex roots required for healthful water filtering and reducing erosion. A void planting lawn within 35 feet o f the ordinary high water mark or using fertilizer within 50 feet of the shore. Instead, consult a landscape specialist and choose native plants to protect your shore and the lake.
Trees
Tree roots help stabilize our shore land. Their leaves trap water and reduce damaging run off.
Manage your shoreline so trees frame a water viewing area of no more than 30 feet wide.
Generally cutting any tree within 35 feet of the shore requires a permit. Contact the Door County Planning Commission for ordinance details.
Trees that fall into the water are excellent habitats for fish and other animals and plants. We encourage you to leave them where they lie. CLAA is replicating this natural process through the DNR sponsored "Fish Stick" program.
Rain Water Run-off
Rapid rain water run-off contributes to both erosion and reduced water quality. Protective measures include: a lush leafy canopy: limited impermeable surfaces; water run-off containment areas: deep, complex root systems; and limited shoreline disruption.
