Lake Zahl National Wildlife Refuge (NWR) is a fee title and easement refuge. The Refuge lies at the juncture of the Missouri Coteau and the Missouri Slope physiographic regions. Water flowing out of Lake Zahl enters the Little Muddy River which flows into Lake Sakakawea, along the Missouri River, 28 miles to the south. <P>The Refuge is mostly native prairie surrounding two large semi-permanent marshes totaling about 1,250 acres. The Refuge has been a successful reintroduction area for giant Canada geese. <P>The Refuge is not staffed and management is the responsibility of the Crosby Wetland Management District (WMD) staff. <P>