Muscatatuck National Wildlife Refuge is a pocket of wetland habitat surrounded by farmland and development. While 86% of the historic wetland habitat in Indiana was drained, many refuge wetlands survived. Refuge staff manage water levels in moist soil units, marshes, and two lakes.
Some marshes are flooded and periodically drained to encourage plant development. Moist soil units and marshes are sometimes disked to prevent trees and other unwanted vegetation from taking over. Natural springs have combined with creek drainages in the Moss Lake area to create a swamp that serves as an important sanctuary for many species of wildlife.