The Englewood marsh is an emergent wetland.  This basin, carved out as part of dam construction after the 1913 flood, was once a lake used for recreation and fishing and even ice skating in winter. Over the last hundred years, silt from flooding events reduced the lake's water depth. Water levels dropped further when a 1930’s low-head recreational dam on the Stillwater River was removed in 2012 to improve to return the river to a more natural condition and improve river safety.   

These changes have made the former lake a paradise for birders and wildlife watchers. Watchable wildlife species include a wide variety of birds including bald eagles as well as otters and other mammals who rely on a aquatic habitat. The active management of this large emergent wetland preserves the habitat that these animals depend on and further enhances and diversify the plant and animal populations in the park.