Underwater woody debris is a healthy component of lake environments. Sunken logs, trees, branches, and root balls provide excellent habitat for wildlife, including fish, turtles, birds, and invertebrates. Beaver activity, wind, erosion, or water inflows from rivers or creeks naturally deposit such woody debris into a lake. However, human activity and development have significantly reduced the amount of natural woody debris from lakes. Communities can promote the health of wildlife populations and improve water quality by creating additional woody debris habitat, such as in-water brush piles. Brush piles can provide fish with a food source, as well as shaded areas to rest, spawn, and escape predators.