Chase Creek Woods in Arnold is the tallest privately-owned woodland known in the eastern United States, having an index of 130.19 feet (39.68 m) for the ten tallest species. The variety of habitat supports large examples of nearly fifty native tree species. Chase Creek Woods is home to twelve of the tallest of their species on record in Maryland. Despite recent development, Chase Creek Woods is one of the countyâ€™s outstanding natural areas. The 2003 study indicates that Chase Creek Woods is an important natural area worthy of protection.